Analysis by High-Speed Profile of Jointed Concrete Pavement Slab Curvatures

Abstract

A high-speed pavement profile analysis method that detects curvature present in the wheelpaths of jointed concrete pavement slabs is presented. This technique can be used to analyze slab curvatures present in pavements and caused by curling and warping forces. The FHWA Long-Term Pavement Performance (LTPP) program has obtained high-speed elevation profiles for the jointed concrete pavements in the study. This profile analysis method reads an LTPP profile and detects imperfections in the road curvature profile, which typically are joints and cracks. It then analyzes the slab regions (intact slab segments) between these numerical imperfections for the presence of curvature. The result of a profile analysis is a road profile index—the curvature index—which represents the average slab curvature present along the wheelpaths for the profile. This profile analysis method was applied to more than 1,100 LTPP GPS3 profiles. The range of the slab curvatures encountered is described, and some key factors related to apparent locked-in curvatures (related to warping and construction) are discussed. The amount of locked-in curvature in slabs significantly affects slab behavior and long-term pavement performance. Curvature information should be available to pavement rehabilitation engineers making fix type and funding decisions for pavements. This new analysis method could be implemented rapidly in routine pavement profile analysis and pavement management systems.

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References

Burton

V. R.

, and Benkelman

Further Study of Fill Settlement in Peat Marshes. Eighth Annual Proceedings of the Highway Research Board, Division of Engineering and Industrial Research, HRB, National Research Council, Washington, D.C., 1928.

Westergaard

H. M.

Stresses in Concrete Pavements Computed by Theoretical Analysis. Public Roads Journal of Highway Research, Vol. 7, No. 2, 1926.

Westergaard

H. M.

Analysis of Stresses in Concrete Roads Caused by Temperature. Public Roads Journal of Highway Research, Vol. 8, No. 3, 1927.

Allen

Interim Report by the Committee on Warping of Concrete Pavements Slabs. HRB Proc., Vol. 18, Part 1, 1938, pp. 306–322.

Allen

Final Report by the Committee on Warping of Concrete Pavements. HRB Proc., Vol. 25, 1946, pp. 199–250.

Rhodes

C. C.

Curing Concrete Pavements. Project 42 B-14(2), Report 145. Michigan State Highway Department, Lansing, 1949.

Darter

M. I.

, Hall

K. T.

, and Kuo

C.-M.

NCHRP Report 372: Support Under Portland Cement Concrete Pavements. TRB, National Research Council, Washington, D.C., 1995.

Sayers

M. W.

, and Karamihas

S. M.

Interpretation of Road Roughness Data. Report FHWA-RD-96-101. FHWA, U.S. Department of Transportation, 1996.

Hveem

F. N.

Slab Warping Affects Pavement Joint Performance. Journal of the American Concrete Institute, Vol. 22, No. 10, June 1951, pp. 797–808.

10.

Springenschmid

, and Fleischer

Effects of Temperature and Moisture on Concrete Pavements. Proc., 6th International Symposium on Concrete Roads, Madrid, Spain, CEMBUREAU, 1990.

11.

Zachlehner

Restraint Stress in Young Concrete Pavements. Proc., 6th International Symposium on Concrete Roads, Madrid, Spain, CEMBUREAU, 1990.

12.

Rowshan

, and Harris

Long-Term Pavement Performance Information Management System Data Users Guide. Report FHWA-RD-93-094. FHWA, U.S. Department of Transportation, 1993.

13.

Perera

R. W.

, and Kohn

S. D.

Road Profiler Data Analysis and Correlation-Final Report. Proc., Fifth Annual Meeting of Road Profiler User Group, Nevada Department of Transportation Research Report 92-30, Feb. 1995.

14.

Hudson

W. R.

, and Hain

R. C.

Special Report 66: Calibration and Use of BPR Roughometer at the AASHO Road Test. HRB, National Research Council, Washington, D.C., 1961, pp. 19–38.

15.

Road Test Report 7: Summary Report. Special Report 61G, Publication 1061. AASHO, Washington, D.C., 1962.

16.

Gillespie

T. D.

, Sayers

M. W.

, and Segel

NCHRP Report 228: Calibration of Response-Type Road Roughness Measuring Systems. TRB, National Research Council, Washington, D.C., 1980.

17.

Janoff

M. S.

NCHRP Report 308: Pavement Roughness and Rideability Field Evaluation. TRB, National Research Council, Washington, D.C., 1988.

18.

Byrum

C. R.

Development of a High-Speed Profiler Based Slab Curvature Index for Jointed Concrete Pavements. Draft Ph.D. dissertation. University of Michigan, Ann Arbor, 1999.

19.

Wells

G. K.

, and Nokes

W. A.

Synthesis of PCCP Design Parameters Researched by Caltrans and Others. Publication 65328-637391-31111, F91TL01. California Department of Transportation, Sacramento, 1991.

20.

Perera

R. W.

, Byrum

C. R.

, Kohn

S. D.

Investigation of Development of Pavement Roughness. Report FHWA-RD-97-147. FHWA, U.S. Department of Transportation, 1998.

21.

Byrum

C. R.

, and Hansen

Influence Function Approach to Analysis of Jointed Portland Cement Concrete Pavement. In Transportation Research Record 1449, TRB, National Research Council, Washington, D.C., 1994, pp. 148–158.

22.

Teller

L. W.

, and Sutherland

E. C.

Observed Effects of Variations in Temperature and Moisture on Size, Shape, and Stress Resistance of Concrete Pavements. Public Roads Journal of Highway Research, Vol. 16, No. 9, 1936.