SR-25 Roller Compacted Concrete Pavement Evaluation

Transcription

1 SR-25 Roller Compacted Concrete Pavement Evaluation Tommy Nantung INDOT Research and Development Division

2 Roadmap to Presentation Project overview Pavement joints, surface and anticipated cracks Pavement friction testing Pavement structural testing Pavement cores

3 Project Overview

4 Project Overview 5 inch plan thickness inch in place thickness - no thickness incentive 6 inch plan thickness inch in place thickness 1.05 thickness incentive 7 inch plan thickness inch in place thickness 1.02 thickness incentive

5 Joints

6 Surface

7 Hairline Cracks

8 Friction Testing Result Road Direction Lane Mile Tire SR-25 NB Shoulder Driving Passing Speed (MPH) Friction Number at 40 MPH 0.01 Smooth Smooth Smooth Smooth Smooth Smooth Smooth Smooth Smooth Smooth Smooth Smooth Smooth Smooth Smooth Smooth Smooth Smooth

9 FWD RESULTS FROM JOINTS TESTING

10 FWD Testing Results Deflection

11 FWD Testing Results Experimental Section Joint spacing (ft) Station FWD DMI (meters) D1 (mils) D3 (mils) Section RCC=5" LTE LTE (%)

12 FWD Testing Results Experimental Section Joint spacing (ft) Station FWD DMI (meters) D1 (mils) D3 (mils) Section RCC=6" LTE LTE (%)

13 FWD Testing Results Experimental Section Joint spacing (ft) Station FWD DMI (meters) D1 (mils) D3 (mils) Section RCC=7" LTE LTE (%)

14 FWD Testing Results Experimental Section Section 1 RCC=5" Joint spacing (ft) FWD Station (meters) In-Situ CBR (%) In-situ Structural Number Soil profile

15 FWD Testing Results Experimental Section Section 2 RCC=6" Joint spacing (ft) FWD Station (meters) In-Situ CBR (%) In-situ Structural Number Soil profile

16 FWD Testing Results Experimental Section Section 3 RCC=7" Joint spacing (ft) FWD Station (meters) In-Situ CBR (%) In-situ Structural Number Soil profile

17 FWD Testing Results Experimental Section Section 1 RCC=5" Joint spacing (ft) FWD Station (meters) Dynamic K-value of Concrete Pavement Support (pci) K-value of pavement support

18 FWD Testing Results Experimental Section Section 2 RCC=6" Joint spacing (ft) FWD Station (meters) Dynamic K-value of Concrete Pavement Support (pci) K-value of pavement support

19 FWD Testing Results Experimental Section Section 3 RCC=7" Joint spacing (ft) FWD Station (meters) Dynamic K-value of Concrete Pavement Support (pci) K-value of pavement support

20 FWD Testing Results Experimental Section Section 1 RCC=5" Joint spacing (ft) FWD Station (meters) Structural Number Estimated Remaining ESALs Modulus of Resilience of Subgrade soil (psi) ,000,000 10, ,000,000 11, ,859,193 7, ,830 5, ,815,285 6, ,627 6, ,989,676 18, ,000,000 20, ,099,280 10, ,235,316 12, ,000,000 11, ,696,421 10, ,315,921 9, ,611,530 9,090 ERL based on smoothness only

21 FWD Testing Results Experimental Section Section 2 RCC=6" Joint spacing (ft) FWD Station (meters) Structural Number Estimated Remaining ESALs Modulus of Resilience of Subgrade soil (psi) ,590,681 11, ,748,259 12, ,000,000 17, ,000,000 20, ,000,000 17, ,000,000 13, ,000,000 15, ,000,000 13, ,000,000 16, ,000,000 20, ,000,000 23, ,000,000 16, ,000,000 12,740 ERL based on smoothness only

22 FWD Testing Results Experimental Section Section 3 RCC=7" Joint spacing (ft) FWD Station (meters) Structural Number Estimated Remaining ESALs Modulus of Resilience of Subgrade soil (psi) ,000,000 12, ,000,000 13, ,000,000 9, ,000,000 9, ,991,530 8, ,748,259 8, ,000,000 11, ,000,000 14, ,000,000 14, ,000,000 9, ,000,000 10, ,000,000 10, ,000,000 10, ,000,000 10, ,000,000 9, ,000,000 10, ,000,000 10,753 ERL based on smoothness only

23 FWD TESTING RESULTS ON MID-SLAB

24 FWD Testing Results Deflection

25 FWD Testing Results - Soil Experimental Section Section 1 RCC=5" Section 2 RCC=6" Section 3 RCC=7" Joint spacing (ft) FWD Station (meters) In-Situ CBR (%) In-situ Structural Number Soil

26 FWD Testing Results Experimental Section Section 1 RCC=5" Section 2 RCC=6" Section 3 RCC=7" Joint spacing (ft) FWD Station (meters) Dynamic K- value of Concrete Pavement Support (pci) K-value of pavement support

27 FWD Testing Results Experimental Section Section 1 RCC=5" Section 2 RCC=6" Section 3 RCC=7" Joint spacing (ft) FWD Station (meters) Structural Number Estimated Remaining ESALs Modulus of Resilience of Subgrade soil (psi) ,000,000 10, ,740,795 9, ,697,723 5, ,000,000 15, ,000,000 20, ,000,000 11, ,000,000 9, ,000,000 9, ,000,000 10,870 ERL based on smoothness only

28 FWD Testing Results In-Situ Average Standard Deviation Elastic Modulus of Concrete 3,473,308 psi 1,276,593 psi Structural Number Modulus of Resilience of Subgrade Soil 12,438 psi 4,121 psi CBR of Subgrade Soil 6.57 % 0.80 % Dynamic K-value of Pavement support 500 pci 201 pci Joint summary

29 FWD Testing Results In-Situ Average Standard Deviation Elastic Modulus of Concrete 4,918,502 psi 244,495 psi Structural Number Modulus of Resilience of Subgrade Soil 11,442 psi 4,403 psi CBR of Subgrade Soil 6.35 % 1.13 % Dynamic K-value of Pavement support 352 pci 192 pci Mid-slab

30 Permeability Test Resistivity (dry samples) 7 core sample: Ohm.meter (average of 5) 6 core sample: Ohm.meter (average of 5) 5 core sample: Ohm.meter (average of 5) Resistivity (saturated samples) 7 core sample: Ohm.meter (average of 5) 6 core sample: Ohm.meter (average of 5) 5 core sample: Ohm.meter (average of 5) Typical INDOT Class C concrete: 110 Ohm.meter ~ 2,500 Coulomb

31 Cores

32 Core Surface 7 inches

33 Cores 7 inches

34 Core Surface 6 inches

35 Cores 6 inches

36 Core Surface 5 inches

37 Cores 5 inches

38 Compressive Strength Average for all thickness 3 days: 5,300 psi 7 days: 5,650 psi 14 days: 6,690 psi and 850 psi flexural

39 Core Density 5 inches Bulk Specific Gravity 2.296

40 Core Density 6 inches Bulk Specific Gravity

41 Core Density 7 inches Bulk Specific Gravity

42 Conclusions Pavement structural testing shows very good results. Soil subgrade construction plays important role. Pavement friction testing shows excellent results. Aggregate angularity and gradation plays a significant role. Concrete resistivity testing shows good results. Compaction of RCC plays a significant role. Core density shows good results. Compaction of RCC plays a significant role. A very successful Roller Compacted Concrete project.

43 Questions?