PCCP on Cement Treated FDR Connersville Municipal Airport Apron Reconstruction. May 14, 2015

Transcription

1 PCCP on Cement Treated FDR Connersville Municipal Airport Apron Reconstruction May 14, 2015

2 PCCP on Full Depth Reclamation Today s Program Project Design Considerations & Details: BFS FDR Basics: Project Construction Approach: MTCSG Milestone Job Site Observation (Safety...)

3 PCCP on Full Depth Reclamation Design Consultant: Contractor: FDR Sub Contractor: Geotechnical Sub: BFS Engineering Milestone Contractors, LP Mt. Carmel Stabilization Group Patriot Engineering & Environmental

4 PROJECT Terminal Apron 9133 SY ± Service GA Piston, Turbine and Jet MGW 84k DWL (5010), 98k Twy A ILS Condition 30 PCI Well Drained Injection Wells Exist

5 Existing Conditions

6 GEOTECHNICAL INVESTIGATION Pavement Cores Subgrade Borings

7 Boring/Core Locations

8 Pavement Thickness Summary

9 Typical Pavement Core

10 Typical Pavement Core

11 Test Results

12 Typical Boring Log

13 Standard vs Modified Proctor

14 Particle Size and CBR

15 CBR Summary

16 GEOTECHNICAL INVESTIGATION Results Frost Group 4 Design CBR 95% max. dry density (ASTM D 698) Subgrade Modulus 140 pci Average Pavement 10.6 Soil Swell Low USCS Variable Generally CL

17 DESIGN Criteria 30k DW MGW Equivalent Departures Annual Departures 104 Frost Depth 32 K-value 140 CBR 5 ARC CIII Approach speed >121 knots < 141 knots Wing Span 30ʹ- < 45ʹ Tail Height 79ʹ - < 118ʹ TDG 3 (gear width & 64 to cockpit) LSFP (65% of Frost Depth)

18 DESIGN Analysis FAARFIELD (FAA Rigid & Flexible Interactive Elastic Layered Design) Fleet Mix Alternatives Life-Cycle Analysis

19 FAARFIELD

20 AIRCRAFT ANNUAL DEPARTURE CONVERSION TO DESIGN AIRCRAFT ANNUAL DEPARTURES Gear types Single wheel Dual wheel Dual Tandem Double Dual Tandem Code Note: DDT wheel configurations are treated as wide body aircraft i.e. dual tandem at 300,000 lbs INPUT VALUES CALCULATED VALUES Aircraft Widebody? Max Takeoff weight MTOW Annual Departures Gear Type (code) MTOW used by design Departures of equiv gear Computed wheel Load of aircraft Equiv. annual departures of design Aircraft Fleet Mix Design Aircraft DW-30 n 30, , , Additional DW-30 n 30, , , Aircraft SW-10 n 10, , , SW-10 n 8,000 2, ,000 1,710 3, DW-100 n 12, , ,969 8 SW-10 n 8, , ,800 1 SW-10 n 8, , ,800 1 SW-10 n 8, , ,800 1 n Equivalent annual departures of a DW

21 ALTERNATIVE SURFACE BASE SUBBASE SUBGRADE 5-inch 6 inch 1 Concrete Overlay P-501 (700 flexural) Existing Asphalt Pavement Isolated Corrections 3 Concrete 4 Asphalt 5 Concrete LFP 6 Asphalt LFP 7 Concrete on Reclaimed Subbase 6-inch P-501 (700 flexural) 4-inch P inch P-501 (700 flexural) 4-inch P inch P-501 (700 flexural) 10 inch P inch Drainage Course 6- inch P inch P-209 Geotextile on 4 inch P-209 Geotextile on 11 inch Drainage Course 10-inch Reclaimed Asphalt Top 7 inches at 95% Standard Proctor Top 7 inches at 95% Standard Proctor Top 7 inches at 95% Standard Proctor Geotextile on Top 7 inches at 95% Standard Proctor Isolated Corrections Alternative Pavement Sections

22 ALTERNATIVE NPV LIFE SUCCESS 1 Concrete Overlay INITIAL COST OVERALL RANKING Concrete Asphalt Concrete LFP Asphalt LFP Concrete, Reclaimed Alternative Ranking

23 DESIGN Selected Section 6 JPCC 10 Panels FDR (12 to 16 ) Over existing subgrade

24 DESIGN Modification of Standards General Provisions P-501 Portland Cement Concrete Pavement X-307 Full-Depth Reclamation

25 DESIGN Modification of Standards General Provisions Clarification of Terms

26 DESIGN Modification of Standards P-501 Portland Cement Concrete Pavement State Aggregate Compressive Strength for <30,000 pounds MIT for Steel Placement and Thickness

27 DESIGN Modification of Standards X-307 Full-Depth Reclamation Targeted low compressive strength Test for acceptance by density Test for acceptance of thickness Stabilized with Cement Gradation for durability 100% passing 3, 55% passing no.4

28 FDR CONSTRUCTION Pulverize Grade Compact Mix Grade Compact Cure

29 QUESTIONS? Don Manley Cell:

30 Full Depth Reclamation with Cement The Leading Stabilization Company in North America Since 1949

31 MCSG and FDR FDR is how our company started in stabilization. Today we do over 100 miles per year. Today there are still roads in southern Illinois that we did back in the 1950 s that have only been chip-sealed.

32 Areas of Operation We have completed projects in 38 states and 2 provinces in Canada. In an average year we do over 500 projects and approximately 20,000,000 square yards of stabilization.

33 Full Depth Reclamation FDR is a more permanent solution for pavement repair and rehabilitation. Reconstruction Results Without The Price Tag FDR uses all of the existing roadway materials, no matter the current condition. FDR may be the greenest construction process available. Reduced overlay thickness typically pays for FDR process.

34 FDR Is Often Performed on The Worst Pavements

35 FDR Gets to The Root of The Problem

36 Portland Cement Stabilization Sand/Silt /RAP Particle Cement Coating Sand/Silt /RAP Particle Portland Cement is used to stabilize the base layer in FDR. Cement hydration process is complex but it s effect on soil and RAP is simple. Cement coats and bonds particles together like glue. Coarser soil = less surface area = more effective.

37 Overview of The Construction Process for FDR

38 The FDR Process The area is first pulverized to full depth and width using our Reclaimers. Then shaped and compacted to return to consistent grade and desired cross slope. Careful attention to detail is key to account for varying HMA depths, looking for soft spots, etc.

39 Pulverization

40 Pulverization

41 Pulverization

42 Beginning Stabilization Cement Delivery & Transfer

43 Spreading Quality Control Application rate (lbs/ sy) is controlled by vein feeder. Vein feeder controls are in the operator s cab. Application rate is within 1-2 lbs/sy. I.e. 4%= 40 lbs/sy

44 Slurry Applications Slakers Used to Make Slurry on Site or Off Site

45 Mixing & Adding Water

46 Mixing Chambers

47

48 Initial Compaction

49 Initial Compaction

50 Shaping

51 Finished Product

52 Thank You Doug McPherson Executive Vice President Mt. Carmel Stabilization Group, Inc. (618)

53 PCCP on Full Depth Reclamation National Industry Resources: ACPA: PCA: CPTC: NRMCA: Indiana Contacts: Indiana Chapter ACPA: Mike Byers or Pat Long IRMCA: Jerry Larson or Jack Weiskettle

54 PLEASE BE SAFE DURING CONSTRUCTION OBSERVATION ON-SITE PPE REQUIRED THANK YOU FOR ATTENDING! Patrick Long Director of Marketing and Government Affairs Indiana Chapter, American Concrete Pavement Assn (m)