Section 2. Procedures and Tests

Transcription

1 Section 2 Procedures and Tests -Plant- Job Guide Concrete Paving Plant Monitor Contact Report Paving Contractor Mix Designs JMF Concrete Aggregate Worksheet JMF Moving Average Summary JMF Adjustment Worksheet Well Graded Aggregate Incentive -#200 Wash Coarse Aggregate Quality Incentives Worksheets WC Ratio Calculation Worksheet WC Ratio Incentive Concrete Ingredient Summary Sample Cards -Field- Job Guide Concrete Paving Inspector Air Content Worksheet Concrete Test Beam Data Probing, Coring, Texture Report and MIT-SCAN T2 Troubleshooting (IMCP Manual) Operation of MIT SCAN T2 Device

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3 JOB GUIDE CONCRETE PAVING PLANT MONITOR 1. Review the Contract and Plans: Become familiar with applicable specifications based upon the size of the project and delivery method of concrete. Review incentives and disincentives available. Check Schedule of Materials Control for testing rates and sample sizes. Attend the pre-construction meeting if possible. 2. Preliminary Testing and Mix Design Requirements: Verify the Contractor s aggregate sources and make sure preliminary testing if required has been done well in advance of the project start date. Make sure the Contractor submits mix designs and gradations/job mix formulas (JMF) to the Concrete Engineering Unit for review and approval a minimum of 21 days prior to initial placement of mix design. 3. Become familiar with concrete batching and mixing equipment and the duties of the Contractor. Obtain the Contractor s organizational chart listing names, phone numbers and s of individuals responsible for mix design, process control administration and inspection. Inspect batch trucks for compliance with specifications 4. Complete a Concrete Paving Contact Report (Form 2164): Review the Contractor s concrete paving combination plant-lab office for compliance. Verify whether the Contractor has an electronic means of communication ( ) Check that scales and water meter are calibrated Obtain pre-production coarse aggregate samples for quality testing in accordance with the Schedule of Materials Control. Fill out Aggregate Sample I.D. cards completely and include with lab samples. Verify cement, fly ash, and admixtures are on the Certified/Approved Products list. Obtain cement, fly ash, and admixtures samples from the Contractor per the Schedule of Materials Control. Provide sampling containers and witness sampling when possible. Include cementitious invoices when submitting samples to the laboratory for testing. Fill out lab sample I.D. cards completely and enclose them with cement, fly ash, and admixture samples. 5. During Concrete Production: Monitor stockpiling and loading of delivered aggregates. Observe scale operation and loading of trucks at a minimum of 2 hour intervals throughout the day. Check field hoppers for contamination. If contaminated, have Contractor empty storage and weigh hoppers and re-charge. Review mix designs and ensure the Contractor is using correct mix design weights. Check that batch weights are adjusted in accordance with current moisture tests. Ensure compliance with minimum and maximum mixing times.

4 6. Complete Concrete Ingredient Summary Daily: Collect a production summary in an electronic format of the daily total concrete produced and daily total ingredient quantities (aggregate, cementitious and water) including the percent overrun/underrun. Collect final project total quantities for concrete produced and ingredients in an electronic format including the percent overrun/underrun. Verify daily and final quantities are within tolerances as required by the Specifications. 7. Perform Moisture Tests and Water Content Verification Testing (Microwave Oven): Verify contractor performs start-up moisture tests. Take additional moistures whenever moisture appearance of delivered aggregate seems to vary or batch water deviates greatly from previous loads. Use Concrete W/C Ratio Calculation Worksheet to determine moisture contents, batch ticket, w/c ratios, unit weight, microwave oven w/c ratios, charting and w/c ratio. incentive/disincentives. Review water/cementitious ratio results for compliance with project specifications and verify with microwave oven testing. 8. Aggregate Gradation Testing: Review Contract and Contractor Mix Design to determine gradation testing requirements. Use Well-graded Concrete Aggregate Worksheet to calculate gradations in the field. Verify Contractor is using Well-graded Concrete Aggregate Worksheet for gradations test, charting and well-graded incentives. Review Contractor s tests for compliance and compare to the Agency test results (split samples). If submitting gradation samples to the lab, fill out Aggregate Sample I.D. cards completely including the JMF number found on the Contractor mix design and the QC Gradation results. Identify QA Gradation on ID card. Determine if Contractor is eligible for well-graded aggregate incentives. Review the Contractor s Well-Graded Aggregate Summary Worksheet. 9. % Passing 75 µm (#200) Sieve: Perform all percent passing the #200 (75 µm) sieve at the Contractor s plant site. Verify Contractor washed all fine aggregate gradations to determine the percent passing the #200 (75 µm) sieve. Use Well-graded Concrete Aggregate Worksheet to calculate the percent passing the #200 (75 µm) sieve in the field. Review the Contractor s percent passing the #200 (75 µm) sieve for the coarse aggregate results to determine compliance or if additional testing is required and compare to Agency results. 10. Aggregate Quality Sampling: Fill out Aggregate Sample I.D. cards completely and record the Contractor and Agency - #200 (75 µm) test results. Identify Quality samples with a Q including the specification reference (Spec 3126 for sand and D3 for coarse aggregate) on ID card. Identify the Quality Companion samples with a Q.

5 11. Coarse Aggregate Quality Sampling: If coarse aggregate quality incentive/disincentive applies, determine when random samples will be taken in accordance with the Schedule of Materials Control using the Coarse Aggregate Quality Incentive/Disincentive Worksheet. Fill out Aggregate Sample I.D. cards completely and enclose with lab samples. Identify Incentive samples with I/D on ID card. 12. Alkali Silica Reactivity (ASR) Sampling: Obtain samples of cement, supplementary cementitious materials (fly ash or slag) and sand in accordance with the Schedule of Materials Control. Fill out the Sample I.D. card completely and enclose with lab samples. Identify ASR sample with Project Specific ASR Testing on ID card. 13. Contractor Records and Charts: Obtain the Contractor s on-site QC records and charts on a daily basis or otherwise directed by the Engineer. Review the Contractor s on-site QC records and charts for accuracy and completeness. Obtain batch tickets on a daily basis or otherwise directed by the Engineer. 14. Maintain a daily diary: Includes hours of production, equipment, weather, concrete air content test results conducted at the plant, air temperatures, concrete yardage totals, and problems or unique circumstances encountered. 15. Documention of test results: Record all calculated w/c ratio test results and mix design data along with all field results on the Weekly Concrete Report (MnDOT Form 2448). Contractor field test results can be entered on a separate form and submitted with the Weekly Concrete Report. 16. Submit the following to the MnDOT Concrete Engineering Unit: Contact Report Weekly Concrete Reports Form 2448 W/C Ratio Incentive Calculation Worksheets Well-graded Aggregate Incentive Worksheets Quality Incentive/Disincentive Worksheets References: MnDOT Specification 2301, 2461, 3126, 3137, Special Provisions, Schedule of Materials Control and MnDOT Concrete Manual.

6 Minnesota Department of Transportation Contact Report - Paving TP-2164 (1/3/2017) 2017 Owner's Name: TUV Paving Plant/Unit #: W123 Date: 5/1/14 Set Up Location: St. Cloud Phone: Plant Superintendent: Bill Batcher bill.batcher@tuvpaving.com Prior to the production of Agency concrete for a paving project, a Department Representative shall perform a thorough on-site inspection of the portable concrete plant with a MnDOT Certified Plant Level 1 or Level 2 Technician representing the Producer. Lab Equpment Calibrations - Date of seive calibration: 5/1/14 Scale and/or Meter Calibrations - Date of scale/meter calibration: 5/1/14 Batch Ticket - A computerized ticket that includes all MnDOT Specifications and supporting information. Technicians - MnDOT Certified Plant 1 Technician: Whitey Walker Cert#: Phone#: MnDOT Certified Plant 1 Technician: Cert#: Phone#: MnDOT Certified Plant 1 Technician: Cert#: Phone#: MnDOT Certified Plant 2 Technician: Sandy Beaches Cert#: Phone#: Agency Representative: Leo Sands Agency: MnDOT Cell #: Agency Inspection x Approved for concrete paving production on SP/SAP #: Date: 5/1/14 Not approved for the following reason(s): Re-inspected and approved on by A MnDOT Certified Concrete Plant Level 1 or 2 Technician, representing the Producer, signs the report certifying compliance with the Certified Ready Mix requirements and continual maintenance of the plant to assure that the plant can produce concrete meeting MnDOT Specifications. After completing the Concrete Plant Contact Report, any procedural changes that cause non-compliance with this program may result in decertification of the plant and cessation of further production of Department concrete as determined by the Concrete Engineer in accordance with F.4.h, "Decertification." Certified by: Bill Batcher Plant Representative Contact Report and Certificate of Compliance to the Concrete Office at Conc1off.dot@state.mn.us. 1

7 Type of Mixer: Plant and Lab W Type of Paving Plant: Make: Condition: Rex Model: Serviceable S Single Drum Dual Drum x Max. mixer batch size yd 3 Batching Equipment: Make: All Dump Trucks are equipped with vibrators (y/n): Seltic y Model: 1A Batch Ticket: Computerized Batch Printout (y/n): y English/Metric Conversion (y/n): y x Date x Target weight of materials x State project number (SP) or (SAP) x Actual batched weights of materials x Mix number x Temper water x Time concrete was batched x Total water weight x Quantity of concrete in this load x Running total of each type of concrete, each day for each project x Labels identifying each material that correlates with the Contractor mix design, including cementitious and admixture abbreviations, and MnDOT 5 digit pit numbers Scale and Meter Information: Material Fly Ash Slag Aggregate Water Scale Water Meter Type Digital Digital Digital Digital Make Cement Digital Seltic lb 5 lb 5/1/14 Seltic Seltic Seltic Seltic Capacity lb lb lb 300 gal Graduation 5 lb 20 lb 20 lb Date of Scale and Meter Calibration 5/1/14 5/1/14 5/1/14 1 gal 5/1/14 Plant Lab - Office ( B.3.a): x x x x x x x x x x x x x x x x x x Located within 100 yd from the batch plant Plant lab and plant office separated and isolated by a wall Plant lab floor area at least 144 sq.ft Plant office floor area at least 80 sq.ft One sturdily built workbench or countertop at least 30 in x 144 in Shelf space of at least 8 ft x 8 in Electronic scales of sufficient size to weigh the sample for all required materials testing A four burner 30" standard stove top or stove and at least two additional electric burners Metal bowls of sufficient size to perform all required material testing Water supply connected to the sink faucet Two desks At least four chairs Telephone capable of providing Printer with scanning and copying capabilities Drinking water container or cooler with adequate supply of potable water Heating and cooling system capable of maintaining a uniform temperature between 72 o and 85 o F Adequate sample storage area to prevent contamination of the samples Detached portable toilet conveniently located 2

8 Materials Cementitious Materials: Material Cement Mill/Power Plant # of Silos Cement Graymatter 1 Fly Ash Asher 1 Slag Capacity (tons) W Delivered to Hopper by (gravity,auger) Auger Auger Automatic Cement Recorded (y/n) Admixtures: Type Supplier Product Name A.E.A. Adcon Ajax Water Reducer Adcon WRXX Sampled at (dispensing tubes recommended) Dispensing Tube Dispensing Tube Does AEA bulk storage tank hold at least 300 gallons (y/n) Aggregates: Material Coarse Aggregate Class Specifications 3126/3137 Supplier Pit Location Pit Number Deliver By In Plant Storage (tons) Sand Salinger Freeport /4+ C Rock Island St. Cloud /4- C Rock Island St. Cloud /8- C Pebble Beach St. Cloud Plant is feed by: Field Hoppers (y/n) y How many? 4 Number of working bins 4 Are stockpiles separated (y/n) y How many belts feed plant working bins 4 Is turn head used (y/n) n Aggregate sampled at: Belt x Water: Source: Proportioned by: x City Water x Meter Well Water Scale Other- What? Can water be heated with a boiler (y/n) n Temperature gauge location: 3

9 Equipment: Mechanical Shakers, Screens and Sieves Equipment W Box Screens: Must have all screens listed below Calibrated on x 2" (50mm) x 3/4" (19mm) x #4 (4.75mm) x 1 1/2" (37.5mm) x 5/8" (16mm)* x Bottom Pan x 1 1/4" (31.5mm)* x 1/2" (12.5mm) x Mechanical Shaker x 1" (25mm) x 3/8" (9.5mm) *Sieves Not Required Note: Additional fill-in sieves may be needed to be added to prevent overloading. Brass Sieves: Must have all screens listed below Calibrated on 5/1/14 x 3/8" (9.5mm) x #30 (600um) x Bottom Pan x #4 (4.75mm) x #50 (300um) x Mechanical Shaker x #8 (2.36mm) x #100 (150um) x #16 (1.18mm) x 2 - #200 (75um) Note: Two #200 (75um) sieves are needed, one is for shaking the gradation and the second is for washing the sample during the final steps of the gradation process. Are replacement sieves available within 24 hours if needed (y/n): y Scales, Microwave Oven Equipment and Miscellaneous Scales: x Electronic Scale Calibrated on 5/1/14 Minimum 15 kg Capacity (minimum 0.02 kg graduated interval) Electronic Scale Calibrated on x Microwave Oven and Ancillary Equipment: 5/1/14 Minimum 6000 g Capacity (minimum 0.1 g graduated interval) x Microwave Oven with turntable or wave deflection fan (900 Watt) x Heat resistant glass pan ( approx. 9" x 9" x 2") x Plain weave fiberglass cloth (10 oz/yd 2 and 14 mils thick) x Metal scraper and grinding pestle Miscellaneous: x x 2" (50mm) Sample Splitter with 3 Pans 6 Electric Burners (minimum) 4

10 Minnesota Department of Transportation Project Specific Mix Design (JMF) SP Number MnDOT Type/ SP.G / Use for: Requested By Name/Mill/Plant Abbreviation Class Dosage Job Specific Concrete using a JMF Company Cement Graymatter GRSPMN I/II 3.15 Paving Projects 3,500 CY or greater Phone Fly Ash Asher ASCAMN F 2.50 High Performance Bridge Slag AgencyContact Other CM Pit # Size Class SP.G. ABS. Agency Phone Admx#1 Adcon Ajax AEA FA# Sand Agency Admx#2 Adcon WRXX A 0-5 FA#2 Plant Name TUV Batch Plant Admx#3 CA# /2 C Contractor TUV Paving Admx#4 CA# /4 C Color CA# /8 C JMF Number Estimated Batch Weights - Pounds (Dry) Mix # % Air Water Cement Fly Ash Slag Other CM % Fly Ash % Slag % Other CM % Ternary A /2-3" 3A " Total CM W/C Ratio % Aggregate Proportion by Volume FA#1 FA#2 CA#1 CA#2 CA# Joe Contractor TUV Paving jcontractor@tuvpaving.com Volume (1/2/17) T.Sanders tsanders@state.mn.us Th. Unit Wt. Slump Range The Concrete Engineer reviews the Contractor's concrete mix design submittal and approves the materials and mix design based on compliance with the contract. Final approval for payment is based on satisfactory field placement and performance. MnDOT Approval Comments: Submit to: conc1off.dot@state.mn.us Page 1

11 Minnesota Department of Transportation Contractor Mix Design - Specialty Concrete (JMF) FA #1 FA #2 CA #1 CA #2 CA #3 TOTAL % WORKING JMF TOTAL % Agg. Size Sand 1 1/2 3/4 3/8 PASSING RANGE WORKING RETAINED SP Prop. % % LIMITS RANGE 2" ± /2" ± " ± /4" ± /2" ± /8" ± # ± # ± # ± # ± # ± # ± # < JMF (1/2/17) Mix # 3A21-1 3A41-1 % RETAINED Well-Graded Aggregate Optional Incentive - % Retained Gradation Band #200 #100 #50 #30 #16 #8 #4 3/8" 1/2" 3/4" 1" 1 1/2" 2" SIEVE SIZE Coarse Sand % Retained (#8 through #30) 28 Greater than 15%, generally enhances cohesion of the mix. Fine Sand % Retained (#30 through #200) 29 Between 24-34%, generally enhances workability of the mix. Page 2

12 Minnesota Department of Transportation JMF Concrete Aggregate Worksheet (1/2/2017) S.P Plant: TUV Paving Date: 5/5/2014 FA #1: FA #2: Aggregate Sources (Pit #): Engineer: T.Sanders Tester: L.Bean Time: 8:30am CA #1: CA #2: CA #3: Lot #: 1 Test #: 1 JMF #: Agency only - QC Test Number corresponding to this test: Sieve Analysis of Coarse Aggregate Sample Wt Sample Wt Sample Wt Aggregate CA #1 1 1/2" CA #2 3/4" CA #3 3/8" Fraction Mix Prop. 25% Mix Prop. 25% Mix Prop. 13% Sieve Sizes Weights (kg) Weights (kg) Weights (kg) Pass - Ret. Ind. Cum. % Pass Ind. Cum. % Pass Ind. Cum. % Pass 2" - 1 1/2" /2" - 1 1/4" /4" - 1" " - 3/4" /4" - 5/8" /8" - 1/2" /2" - 3/8" /8" - # #4 - Btm Check Total ± 0.10 kg of Sample Wt ± 0.10 kg of Sample Wt ± 0.10 kg of Sample Wt Sieve Analysis of Fine Aggregate Percent Passing #200 Sieve Test Sample Wt Sample Wt. Coarse Aggregate CA #1 CA #2 CA #3 Aggregate FA #1 Sand FA #2 (A) Dry weight of original sample Fraction Mix Prop. 37% Mix Prop. (B) Dry weight of washed sample Sieve Sizes Weights (g) Weights (g) (C) Loss by washing (A-B) Pass - Ret. Ind. Cum. % Pass Ind. Cum. % Pass (D) % Passing #200 (C/A)* /2" - 3/8" /8" - # Fine Aggregate FA #1 FA #2 #4 - # (A) Dry weight of original sample *#6 - # (B) Dry weight of washed sample #8 - # (C) Loss by washing (A-B) 6.7 #16 - # (D) % Passing #200 (C/A)* #30 - # #50 - # Additional Remarks or Comments #100 - # Agency -#200 Result: 1 1/2" = 0.2, 3/4" = 0.3, 3/8" = 0.3 *#200 - Btm Loss by Washing 6.7 Check Total ± 0.3% of Sample Wt ± 0.3% of Sample Wt Composite Gradation for Job Mix Formula Aggregate CA #1 CA #2 CA #3 FA #1 FA #2 Comp. Fraction 1 1/2" 3/4" 3/8" Sand Total % Grad. Req. Working Total % Mix Prop. 25% 25% 13% 37% Passing JMF Range JMF Working Range Retained Coarse Sand % Retained 2" ± (#8 through #30) 1 1/2" ± " ± /4" ± /2" ± Fine Sand % Retained 3/8" ± (#30 through #200) # ± # ± # ± # ± # ± # ± # ± 1.6% max

13 Minnesota Department of Transportation JMF Moving Average Summary 1/12/2017 Plant: TUV Paving SP: Test #: JMF #: Sieve Contractor Results Agency Verification Results Moving Average Total % Passing JMF Working Range Contractor Results Agency Verification Results Moving Average Total % Passing JMF Working Range Contractor Results Agency Verification Results Moving Average Total % Passing JMF Working Range Contractor Results Agency Verification Results Moving Average Total % Passing JMF Working Range 2" /2" " /4" /2" /8" # # # # # # # Remarks or Comments 1

14 Minnesota Department of Transportation Well Graded Aggregate Incentives SP #: ENGINEER: TOTAL YD 3 : TOTAL I/D ($): T.Sanders 8781 $17, Lot # Test # Date Tested 2" 1 1/2" 1" 3/4" 1/2" 3/8" #4 #8 #16 #30 #50 #100 #200 % Retained (#8 to #30) % Retained (#30 to #200) Pay Factor Total CY Produced for Lot Total CY Measured for Lot Incentive Specification > < --- Yardage per Lot produced at the plant. < --- Yardage per Lot placed in the field determined by the Agency field personal. The incentive is determined from this quantity. Lot 1 Average $2.00 3, $7, /6/ /6/ Lot 2 Average $2.00 1, $3, /7/ /7/ /7/ Lot 3 Average $2.00 3, $6, Lot Average 1

15 Minnesota Department of Transportation JMF Adjustment Worksheet (1/31/17) S.P. Number: Date: 5/6/14 Sp. Gravity: Cement Fly Ash Slag Other CM FA#1 FA#2 CA#1 CA# CA# Current Mix Design Information Mix # % Aggregate Proportion by Volume " A /2" " /4" /2" /8" # # # # Current JMF Number: # # # Aggregate Proportion Adjustment Mix # % Air % Air Water Water Cement Cement Fly Ash Fly Ash % Aggregate Proportion by Volume " A21-1R /2" " /4" /2" /8" # # # # New JMF Number: # L. Bean A.Tester Contractor Representative Agency Representative Submit to MnDOT Concrete Office for New JMF Number: conc1off.dot@state.mn.us Slag Slag Other CM Other CM FA#1 FA#1 FA#2 FA#2 CA#1 CA#1 CA#2 CA#2 CA#3 CA#3 Seive Sizes Seive Sizes FA#1 Aggregate Gradation Adjustment FA#1 FA#2 FA#2 CA#1 CA#1 CA#2 CA#2 CA#3 CA#3 Total % Passing Total % Retained Total % Passing Total % Retaine d # # Page 1

16 Minnesota Department of Transportation (1/31/17) JMF Adjustment Worksheet Adjusted Well-Graded Aggregate Optional Incentive - % Retained Gradation Band % RETAINED Coarse Sand % Retained (#8 through #30) 29 Greater than 15%, generally enhances cohesion of the mix. Fine Sand % Retained (#30 through #200) 29 Between 24-34%, generally enhances workability of the mix #200 #100 #50 #30 #16 #8 #4 3/8" 1/2" 3/4" 1" 1 1/2" 2" SIEVE SIZE Make JMF adjustments in accordance with L.3.b, "JMF Adjustments." Allowable JMF Adjustment per L.3.b Sieve Size Allowable Adjustment, % > No. 4 [4.75 mm] +/- 5 No. 8 [2.36 mm] - No. 30 [600um] +/- 4 No. 50 [300 um] +/- 3 No. 100 [150 um] +/- 2 Page 2

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19 Minnesota Department of Transportation Coarse Aggregate Quality Incentive/Disincentive (2/2017) SP Number: Engineer: T.Sanders Total Project Cubic Yards Cubic Yards Per Lot Number of Lots (n) Lot Quality Cubic Yards Testing Location (Cubic Yards) Plan (cubic yards) of Concrete Samples Per Fraction (n) , , , , ,078 8, , ,064 10, ,134 12, ,594 3,500-7,500 7,501-10,000 10,001-25,000 25,001-50,000 NOTE: Click "Generate Random Numbers" to establish the testing location. The macros must be enabled for the random numbers generator to work ,

20 Minnesota Department of Transportation Class C - Coarse Aggregate Quality Incentive/Disincentive S.P. Number: Engineer: T.Sanders Aggregate Fraction 3/4+ Aggregate Fraction 3/4- Number of Samples (n) 10 Number of Samples (n) 10 Number of Cubic Yards Number of Cubic Yards (2/2017) Lot # % Carbonate Lot # % Carbonate X = mean 4.35 X = mean s = standard deviation 1.08 s = standard deviation 2.13 QI = quality index 5.72 QI = quality index I/D per Cubic Yard $1.00 I/D per Cubic Yard $0.50 I/D per Fraction $14, I/D per Fraction $7, Total Incentive/Disincentive: $21, /24/2017

21 Minnesota Department of Transportation Concrete W/C Ratio Calculation Worksheet (2/17/2017) S.P. DATE TIME TICKET # LOT # TEST # TESTER ENGINEER /5/ :00 AM L.Bean T.Sanders MIX DESIGN 3A21-1 BATCH SIZE, (cy) 10 (A) WATER, (lb/cy) 213 CEMENT, (lb/cy) 400 FLY ASH, (lb/cy) 170 TOTAL CEMENTITIOUS, (lb/cy) SLAG, (lb/cy) 0 = 570 (B) DESIGN W/C 0.37 BATCH REPORT FA #1 FA #2 CA #1 CA #2 CA #3 FRACTION WT OF SAMPLE + PAN (WET), (g) WT OF SAMPLE + PAN (DRY), (g) WT OF PAN, (g) TOTAL MOISTURE FACTOR ABSORPTION FACTOR FREE MOISTURE FACTOR SAND /2" /4" TOTAL DESIGN WT (OVEN DRY), (lb/cy) TOTAL MOISTURE, (lb/cy) = 71 (C) FREE MOISTURE, (lb/cy) = 40 (D) ABSORBED MOISTURE, (lb/cy) = (E) WATER/CEMENT CALCULATION TOTAL AVERAGE BATCH WATER, (GAL) TICKET # BATCH TEMPER CEMENT FLY ASH/SLAG ( AVE. BATCH WATER + AVE. TEMPER WATER ) (F) WATER WATER CONTENT CONTENT ACTUAL BATCH WATER USED, (lb/cy) (GAL) (GAL) (lbs) (lbs) (( F x 8.33 ) / A ) (G) MAXIMUM BATCH WATER AVAILABLE, (GAL) (((AVE. CM * 0.40) - D)*A) / 8.33)) (H) TOTAL MIX WATER USED, (lb/cy) (I) ( D + G ) W/C RATIO 0.36 (J) ( I / AVE. CM ) TOTAL WATER IN CONCRETE, (lb/cy) (K) ( E + I ) AVE AVE. CM 5711 UNIT WEIGHT TEST % PASSING #4 SIEVE VOLUME OF UNIT WEIGHT BUCKET, VOL 0.25 ft 3 MASS OF SAMPLE RETAINED #4 SIEVE, WR g MASS OF UNIT WT. BUCKET, BWT 8.5 lb MASS. OF SAMPLE PASSING #4 SIEVE, WP g MASS OF UNIT WT. BUCKET & CONCRETE, CBWT 44.5 lb (WD - WR4) - WS % PASSING #4, P % MASS OF CONCRETE, (CBWT - BWT), CWT 36 lb WP4 / (WD-WS) UNIT WT. OF CONCRETE, CWT / VOL, UW lb/cf % PASSING #4 FROM JMF, P4JMF 42.0 % % PASSING #4 FROM TOTAL MIX, P4TM 51.0 % MICROWAVE OVEN TEST [(( Agg. Design WT.) x (P4JMF/100))+ (AVE CM / A)] [( Agg. Design WT.) + (AVE CM / A)] x100 MASS OF TRAY & CLOTH, WS g MASS OF TRAY, CLOTH & WET CONCRETE, WF g CORRECTION FACTOR, CF 1.17 MASS OF PAN, CLOTH & DRY CONCRETE, WD g (100 - P4 / P4TM) TOTAL MEASURED WATER CONTENT, WT M lb/cy ADJUSTED TOTAL WATER CONTENT, AWT M lb/cy (WF - WD / WF - WS) x 27 x UW WT M X CF COMPARE TO (K) ESTIMATED ABSORBED WATER CONTENT, WT A lb/cy ADJUSTED MIXING WATER CONTENT, AMW lb/cy Sum of Absorbed Moistures (E) AWT M - WT A ESTIMATED MIXING WATER CONTENT, MW lb/cy ADJUSTED W/C RATIO 0.38 WT M - WT A ((AMW) / (AVE CM / A)) COMPARE TO (J)

22 Minnesota Department of Transportation W/C Ratio Incentive Calculation SP NUMBER: ENGINEER: AVERAGE W/C RATIO: TOTAL CUBIC YARDS: TOTAL INCENTIVE/DISINCENTIVE: T.Sanders ,781 $26, (2/17/2017) LOT # TEST # DATE TESTED MIX NUMBER W/C RATIO (J) TOTAL CY PRODUCED BY LOT REMARKS PAY FACTOR TOTAL CY MEASURED FOR LOT INCENTIVE/ DISINCENTIVE 1 1 3A A A A < --- Yardage per Lot produced at the plant. < --- Yardage per Lot placed in the field determined by the Agency field personal. The incentive/disincentive is determined from this quantity. Lot # 1 Average: $ $11, /6/14 3A /6/14 3A yards wasted 2 Lot # 2 Average: $ $5, /7/14 3A /7/14 3A /7/14 3A Lot # 3 Average: $ $9, Lot # Average: Page 1

23 Minnesota Department of Transportation Concrete Ingredient Summary S.P.: Engineer: T.Sanders Total Batched Quantity (cubic yards) 8,784 Plant: TUV Batch Plant Inspector: L.Bean Final Cement Overrun/Underrun (%) (1/2017) Date Product Type Batched Quantity (lb) Required Quantity (lb) 5/7/14 Daily Overrun/Underrrun (%) Cummulative Overrun/Underrrun (%) Mix Type Batched Quantity (cubic yards) Cement 1,650, ,657, A Fly Ash/Slag 666, , Water FA#1 6,117, ,137, FA#2 FA#3 CA#1 3,677, ,709, CA#2 3,504, ,521, CA#3 CA#4 Waste Cement 672, , A Fly Ash/Slag 270, , Water FA#1 2,462, ,470, FA#2 FA#3 CA#1 1,503, ,518, CA#2 1,448, ,456, CA#3 CA#4 Waste 8 Cement 710, , A Fly Ash/Slag 285, , Water FA#1 2,649, ,657, FA#2 FA#3 CA#1 1,640, ,657, CA#2 1,412, ,419, CA#3 CA#4 Waste Cement Fly Ash/Slag Water FA#1 FA#2 FA#3 CA#1 CA#2 CA#3 CA#4 Waste Page 1 3/24/2017

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26 JOB GUIDE CONCRETE PAVING INSPECTION 1. Review Contract and Plans: Obtain plans and special provisions and study them in detail. Attend the pre-construction meeting. 2. Determine Random Numbers: Determine random numbers for testing locations using the Probing, Coring, Texture and MIT-SCAN T2 Report. 3. Become familiar with concrete paving equipment and paving operations. Check paving equipment for proper adjustment and compliance with specifications. Understand the function of each piece of equipment. Become familiar with paving sequence and review field controls for line and grade. Verify string line is set sufficiently in advance to avoid delays. Check vibration equipment and verify vibration monitors are operating correctly. Verify that utility work and conduits are complete. Pre-locate utility fixtures to be incorporated into the pavement. 4. Placement on Grade: Check that the grade is in a moist condition ahead of the concrete placement. Trucks hauling concrete are not allowed on the finished grade unless authorized by the Engineer. 5. Placement on Asphalt: Clean the milled surface by sweeping and patching, or as directed by the Engineer. Maintain the asphalt surface in a moist condition and at a surface temperature not greater than 120 F [50 C] before or during concrete placement. Ensure the Contractor trucks don t tear up the asphalt during turning movements. 6. Placement on Geotextile: Clean the surface of the concrete prior to placing the geotextile fabric by power sweeping and air blasting. Ensure fabric is tight without excess wrinkles or folds. Maintain the surface in a slightly damp, not saturated, condition before placing the concrete. Ensure the Contractor trucks don t tear up the geotextile during turning movements. 7. Reinforcing Steel and Keyway Placement: Check size, spacing, and placement of reinforcing steel, and any other special reinforced panels. Verify proper reinforcement size, grade, lap ties, depth and spacing. Check size and length of centerline steel and keyway tie steel. Check if the required mechanical placer is placing it at the proper depth. Assure location at proper elevation. Make sure bars are the right size and length, and properly spaced. Make sure keyway tie steel is not placed at a doweled joint.

27 8. Dowel Basket Assemblies: Check proper size and type of dowel bar assembly. Review Quality Control Plan for Anchoring Dowel Basket Assemblies. Observe for approval the Contractor s fastening method for dowel bar assemblies before the beginning of concrete placement and each day prior to beginning paving. Check dowel bar assemblies for proper placement to assure that they are parallel with the base and centerline of road, properly supported and staked. Make sure dowel baskets are securely anchored on the bottom rail using the correct number of anchors. Refer to the Standard Plates for details. If a bond breaker layer is used, make sure dowel baskets are securely fastened through the bond breaker layer into the concrete below. Check the placement of dowel assemblies at catch basins and manholes; keep joint at least 3 ft (1 m) from structure. Make sure an approved form release agent has been applied to dowel bars. Confirm joint sawing locations are marked at the same location as the dowel baskets. Mutually use the MIT-SCAN T2 device for locating dowel basket assemblies in the plastic concrete. 9. When using forms: Inspect pavement forms, as necessary, to ensure cleanliness and compliance with form requirements. Verify the forms are set to the alignment and grade shown on the plans for a distance equal to at least 3 hours ahead of concrete placement. If rain or cold weather occurs, ensure forms are removed and reset as necessary to allow drainage. 10. Verify the Contractor s prepared for inclement weather (rain or cold weather conditions). Review the Contractor s written cold weather protection plan. 11. During Concrete Placement: Make sure concrete is placed within the time specification. Check that no concrete is lost on the haul road or sticks in the truck after it dumps. Stencil the stationing into the edge of the pavement every 500 ft (200 m) as directed by the Engineer. When placing concrete adjacent to in-place concrete pavement, protect the existing transverse joints and the edges of the pavement. Set manhole and catch basin frames or rings to the elevation shown on the plans during the paving operations. 12. Monitor paving operation for continuous placement and consolidation of concrete. Make sure concrete is spread uniformly and ensure there is uniform strike-off. Check to see that paver is not over or under loaded, and that concrete is rolling not sliding in front of the screed. Check if vibrating tubes are operating Spot check vibration equipment daily and verify vibration monitors are operating correctly. Computerized vibration monitors are required on slipform pavers. Obtain an electronic copy of all vibration monitor data from the Contractor at the end of the project.

28 13. Concrete Appearance: Check that the concrete is maintained at a uniform consistency. Monitor the surface and edge slump. Make sure the tamping bar is properly adjusted so large aggregate is tucked below the surface and not dragged. 14. Verify pavement dimensions: Measure pavement width, thickness, crown, superelevation, edge slump, and joints match to ensure it meets plan requirements. Observe the Contractor s probing operations. 15. Air Content and Slump Testing in accordance with the Schedule of Materials Control: Observe Contractor perform air content testing for slipform placement before and after consolidation. Perform air content testing for slipform placement before and after. Observe Contractor perform air content and slump testing for fixed form placement. Verify the air content and slump test results are within Specifications. Record all test results on the Weekly Concrete Report (MnDOT Form 2448). Contractor test results can be entered on a separate form and submitted with the Weekly Concrete Report. 16. Flexural Strength Testing (Beams): Observe Contractor make beams as required in the Schedule of Materials Control. Contractor removes beams from boxes, cleans boxes, and reassembles boxes. Agency cures and breaks beams. Record beam break results on Concrete Test Beam Data (MnDOT Form 2162). Verify minimum strength requirements for opening pavements to construction and to general traffic. 17. Finishing and Texturing: Do not allow the Contractor to add water to the surface of the concrete to aid in finishing without the approval of the Engineer. Check surface using a 10 ft (3 m) straightedge to check for tolerance. 18. Ensure texturing is properly performed at appropriate time. Check that the texture marks are uniform and parallel to centerline. Provide random sand patch test locations to the Contractor. Verify texture by observing Contractor sand patch testing. Review the Contractor s Concrete Texture results for compliance. 19. Headers: Construct construction headers, temporary headers, and permanent headers as shown on the plans and Standard Plates Do not allow incorporating any concrete accumulated in the grout box of the paver into the pavement. Construct all headers such that the concrete contained in the grout box is removed from the project. Use internal vibration to consolidate the concrete along header joints before final finishing.

29 20. Curing: Verify an approved curing compound lot/batch is used by checking the Approved/Qualified Products list. Check application rate of curing compound for uniformity, yield, and timely placement. Ensure compliance with cold weather protection requirements. 21. Sawing Joints: Check joint sawing operation. Check joint location adjustments at side streets, inlets, manholes, etc. Check appearance, depth, and width of sawed joints on a daily basis. No raveling and no random cracking should occur at the time of initial sawing. Widening of the joints shall not occur until the concrete is at least 24 hours old. 22. Sealing Joints: Verify joints are clean and dry before approving. Do not allow traffic on the slab until the widened joints are sealed. 23. MIT-SCAN T2 Testing on the Hardened Concrete: Provide random testing locations to the Contractor. Observe the Contractor scan the tie bar steel and dowel bar anchoring within 24 hours of pavement placement as required in the Special Provisions. 24. Thickness (Cores) Verification: Observe the Contractor s coring operation to verify authenticity. Field measure concrete cores, record the results on the Field Coring Report and submit cores to the MnDOT Laboratory for official measurement and testing. 25. Pavement Surface Smoothness: Make sure the Inertial Profiler (IP) is certified and displaying the certification sticker on the vehicle. Make sure IP operator is certified. See MnDOT Smoothness website for a list of the certified IP s, required settings for individual certified IP s, and certified operators. Observe all Contractor profiling, unless approved by the Engineer. Review the Contractor s printouts containing the IP s settings, each segment s left and right IRI values, the signature of the operator and electronic ERD files submitted on the same day of the profiling. Review the Smoothness Assurance analysis for contract compliance. Determine if grinding is needed or required. Check the final Concrete Profile Summary reports for contract compliance. 26. Maintain Agency Daily Diary: Includes hours of production, equipment, concrete temperatures, air content, slump reading, cylinder and beam data, stations paved, width, depth, yield, weather, air temperatures, and problems or unique circumstances encountered. 27. Document all field results along with calculated w/c ratio test results and mix design data on the Weekly Concrete Report (MnDOT Form 2448) and submit to the Concrete Engineering Unit on a weekly basis. Contractor field test results can be entered on a separate form and submitted with the Weekly Concrete Report.

30 28. Submit the following to the MnDOT Concrete Engineering Unit: Weekly Concrete Reports Form 2448 Concrete Test Beam Data Form 2162 Field Coring Reports Field Probing Reports Concrete Texture Reports Concrete Profile Summary Worksheets Change orders and Supplemental Agreements

31 AIR CONTENT WORKSHEET/CHART (1/2017) AIR CONTENT (%) % Air Before Consolidation % Air After Consolidation/Adjusted % Air After Consolidation SP Number: Engineer: T.Sanders Contractor: TUV Paving Tester: Joe Tester Date Time Station Concrete Temperature % Air Before Consolidation [a] 7:46am 8:30am 9:55am 12:50pm 12:55pm 1:00pm 1:05pm 1:10pm 1:15pm 1:20pm 2:00pm 3:13pm 4:01pm 5:25pm Time 8:40am 2:10pm Station Concrete Temperature % Air After Consolidation [b] Air Loss Correction Factor [ab] % Air or Adjusted % Air After Consolidation Additional Information or Comments

32 Minnesota Department of Transportation Concrete Test Beam Data Mix Age Ave. Mix Age Ave. Mix Project No.: No. No. (days) Strength No. Date: 6/25/14 3A Project Engineer: T.Sanders 3A41HE Inspector: L.Bean 3A Contractor: TUV Paving 3A41HE Age (days) TP (1/2017) Ave. Strength Identication No. Station Date Made Mix No. Date Tested Ave. Width "B" Ave. Depth "D" Span Length (in) Total Test Load (psi) Modulus of Rupture (in) (in) Factor (psi) 1A A21 8/26/ B B A21 9/20/ B C A21 2A /6/14 3A21 8/27/ B B /6/14 3A21 9/21/ B C /6/14 3A21 3A /7/14 3A41HE 8/28/ B B /7/14 3A41HE 9/22/ B C /7/14 3A41HE 4A /8/14 3A21 8/29/ B B /8/14 3A21 9/23/ B C /8/14 3A21 Spiral Area Correction Age (days) Notes 1

33 Minnesota Department of Transportation Data Entry Enter the Entire project prior to start! S.P.: Engineer: T.Sanders Paving Contractor: TUV Paving Inspector: Last Revised (1/2017) Joe Inspector Starting Core #: 1 Is this an overlay where the slope/crown correction is with concrete? No Begin Station End Station Lane Width Design Thickness Roadway Direction Lane (ft) (ft) (ft) Requirement (in) TH 10 TH 10 TH 10 TH 10 TH 10 TH 10 TH 10 EB EB EB EB WB WB WB 1 Lane Right of 1 Lane Right of 1 Lane Right of Off Ramp 1 Lane Left of 1 Lane Left of 1 Lane Left of

34 Minnesota Department of Transportation Field Probing Report Last Revised (1/2017) S.P.: Engineer: T.Sanders Contractor: TUV Paving Probe # Name P29 TH 10, EB, Off Ramp P TH 10, EB, Off Ramp 4+44 P31 TH 10, EB, Off Ramp P32 TH 10, EB, Off Ramp TH 10, EB, 1 Lane Right of Station P P P P6 TH 10, EB, 1 Lane Right of P Offset from pavement edge P P7 TH 10, EB, 1 Lane Right of TH 10, EB, 1 Lane Right of TH 10, EB, 1 Lane Right of TH 10, EB, 1 Lane Right of TH 10, EB, 1 Lane Right of P P P P P1 2.7 P3 8.0 P P4 7.7 P Corrected Station Corrected TH 10, EB, 1 Lane Right of 8.2 Offset Height Date Probed 5/7/14 5/7/14 5/7/14 5/7/14 Thickness Requirement (in)

35 Minnesota Department of Transportation Field Coring Report Last Revised (1/2017) S.P.: Engineer: T.Sanders Contractor: TUV Paving Inspector: Joe Inspector ((REQUIRED)) Corrected QCP Thick Core Field Probe Req. Core # Date Poured Name Station Offset Type Probe # Station Offset Height Height Date Cored (in.) C15 5/7/14 TH 10, EB, Off Ramp PVC P /29/ C16 5/7/14 TH 10, EB, Off Ramp QAC /29/ C PVC P /29/ C QAC /29/ C4 TH 10, EB, 1 Lane Right of QAC 8.1 5/29/ C3 TH 10, EB, 1 Lane Right of PVC P /29/ C QAC 8.2 5/29/ C1 TH 10, EB, 1 Lane Right of PVC P /29/ C2 TH 10, EB, 1 Lane Right of QAC /29/ C5 TH 10, EB, 1 Lane Right of PVC P /29/ C PVC P /29/ C6 TH 10, EB, 1 Lane Right of QAC 7.9 5/29/ C7 TH 10, EB, 1 Lane Right of PVC P /29/ C PVC P /29/ C8 TH 10, EB, 1 Lane Right of QAC /29/ C QAC 8.3 5/29/

36 Minnesota Department of Transportation Concrete Texture Report Volume of Spheres S.P.: Engineer: T.Sanders Contractor: TUV Paving (mm 3 ): 67,963 Texture Type: Last Revised (1/2017) Carpet Test # Name 13 TH 10, EB, Off Ramp 6+19 X TH 10, EB, Off Ramp X X TH 10, EB, 1 Lane Right of X X TH 10, EB, 1 Lane Right of X TH 10, EB, 1 Lane Right of X X X TH 10, EB, 1 Lane Right of X X TH 10, EB, 1 Lane Right of X X TH 10, EB, 1 Lane Right of TH 10, EB, 1 Lane Right of X X X X TH 10, EB, 1 Lane Right of X X TH 10, EB, 1 Lane Right of Station Outside Wheel Path (OWP) X 285 Dia. 1 (mm) Dia. 2 (mm) Dia. 3 (mm) Dia. 4 (mm) Ave. Macrotexture Depth (mm)

37 Minnesota Department of Transportation MIT-SCAN T2 Report Last Revised (1/2017) S.P.: Engineer: T.Sanders Contractor: TUV Paving Scan # Name TH 10, EB, Off Ramp Station Corrected Station Date Scanned 5/7/14 TH 10, EB, Off Ramp /7/14 Y 2+38 Y TH 10, EB, Off Ramp Y 4+03 Y TH 10, EB, Off Ramp 5+43 Y 5+61 Y n - Basket was adjusted TH 10, EB, Off Ramp 7+05 Y TH 10, EB, Off Ramp 8+15 Y 8+54 Y TH 10, EB, Off Ramp 9+64 Y 9+94 Y TH 10, EB, 1 Lane Right of Y TH 10, EB, Off Ramp Y Y Y TH 10, EB, 1 Lane Right of TH 10, EB, 1 Lane Right of Comments Y Y Y Y 5

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54 Operation of MIT SCAN T2 Device Locating Reinforcement Bars and Dowel Bar Baskets 1. Assemble the device by connecting the two parts together. Do not force the connection. Be sure the device is fully charged. 1

55 2. To turn on the device, press both the top and bottom buttons on the handle and release. 3. The Main Menu will appear on the LCD panel. Main menu consists of: A - Search/Measurement B - Location Settings C - System D - Data Management E - Off F - Device Settings 2

56 4. To locate reinforcement bars or dowel bar baskets, select A Search/Measurement. 5. Press and hold the bottom button on the handle while moving the device over the targeted area. 3

57 6. To locate the reinforcement bars or dowel bar basket immediately after the paver or when the concrete is in plastic form, hover the device over the concrete. The wheels of the device do not need to touch the concrete for this function to work. 7. To locate the reinforcement bars or dowel bar basket when the concrete is in hardened form, either hover or roll the device over the concrete. 4

58 8. If the sensor head approaches reinforcement bar or dowel bar basket from the side, one bar will appear higher than the rest. The four bars shown on the LCD panel represent four sensors evenly spaced on the bottom of the device (sensor head). Note the location of rebar in relation to sensor. 5

59 9. If the sensor head approaches the reinforcement bar or dowel bar basket straight on, all four bars will appear highest and equal. 10. For questions or further information, please contact: Robert Golish Assistant Concrete Engineer MnDOT Office of Materials and Road Research 1400 Gervais Avenue Maplewood, MN Office: Cell: