Evaluation of Subbase Friction for Typical Korean Concrete Pavement

Abstract

The frictional force between concrete slab and subbase is accompanied by horizontal slab movements induced by variation of temperature and moisture in the concrete slabs. The frictional force is exerted in the opposite direction from the horizontal slab movement and causes stress in the slab. Rational evaluation of subbase friction is important in configuring joint sealing, slab thickness, and reinforced steel. Determination of the subbase friction is also required as an input for the recently developed concrete-pavement-construction program HIPERPAV. Lean concrete has been widely used as the typical subbase for jointed concrete pavement in Korea. Generally, polythene sheet is placed between the lean concrete subbase and the concrete pavement slab as a friction reducer. In addition, an asphalt bond breaker may be used as an alternative friction reducer in some cases. Three series of push-off tests were conducted to study the characteristics of subbase friction for this typical Korean jointed concrete pavement system under three different subbase conditions (I, test slab directly cast on lean concrete subbase; II, polythene sheet placed between test slab and lean concrete subbase; and III, 4-cm asphalt bond breaker placed between test slab and lean concrete subbase). For each series, tests were performed under various conditions (rate of movement, slab thickness, number of movement cycles) to investigate the influence of these potential factors on the development of subbase friction.

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References

Pittman

D. W.

, and McCullough

B. F.

. Development of a Roller-Compacted Concrete Pavement Crack and Joint Spacing Model. In Transportation Research Record 1568, TRB, National Research Council, Washington, D.C., 1997, pp. 52–64.

Lee

S. W.

Horizontal Joint Movements in Rigid Pavements. Ph.D. thesis. Pennsylvania State University, 2000.

McCullough

B. F.

, and Rasmussen

R. O.

. Fast Track Paving: Concrete Temperature Control and Traffic Opening Criteria for Bonded Concrete Overlays, Task G, Final Report. FHWA, U.S. Department of Transportation, 1999.

Ruiz

J. M.

, Kim

P. J.

, Schidler

A. K.

, and Rasmussen

R. O.

. Validation of HIPERPAV for Prediction of Early-Age Jointed Concrete Pavement Behavior. In Transportation Research Record: Journal of the Transportation Research Board, No. 1778, TRB, National Research Council, Washington, D.C., 2001, pp. 17–25.

Chypin

, McCullough

B. F.

, and Hudson

W. R.

. A Sensitivity Analysis of Continuously Reinforced Concrete Pavement Model CRCP-1 for Highways. Research Report No. 177-2. Center for Highway Research, University of Texas at Austin, 1974.

, and McCullough

B. F.

. CRCP-2, An Improved Computer Program for Analysis of Continuously Reinforced Concrete Pavements. Research Report No. 177-9. Center for Highway Research, University of Texas at Austin, 1978.

Hunt

J. G.

Temperature Changes and Thermal Cracking in Concrete Pavements at Early Ages. Technical Report 460. Cement and Concrete Association, Wexham Spring, England, 1972.

Ayton

G. P. A.

, and Harber

E. W.

. Curing and Interlayer Debonding. In Proc., Sixth International Conference on Concrete Pavement Design and Materials for High Performance, Vol. 2, Purdue University, West Lafayette, Ind., 1997.

Wesevich

J. W.

, McCullough

B. F.

, and Burns

N. H.

. Stabilization Subbase Study for Concrete Pavement. Research Report 459-1. Center for Transportation Research, University of Texas at Austin, 1987.

10.

Kragelski

I. V.

, Dobychin

M. N.

, and Kombalov

V. S.

. Friction and Wear: Calculation Methods. Pergamon Press, New York, 1977.

11.

Stott

J. P.

Tests on Materials for Use in Sliding Layers Under Concrete Road Slabs. Civil Engineering, Vol. 56, No. 663, 1963.

12.

Teller

L. W.

, and Bosley

H. L.

. The Arlington Curing Experiments. Public Roads, Vol. 16, No. 9, 1936.

13.

Friberg

B. F.

Frictional Resistance under Concrete Pavements and Restraint Stresses in Long Reinforced Slabs. Highway Research Board Proceedings, Washington, D.C., Vol. 33, 1954, pp. 167–182.

14.

Timms

A. G.

Evaluating Subgrade Friction-Reducing Mediums for Rigid Pavements. In Highway Research Record 60, HRB, National Research Council, Washington, D.C., 1963, pp. 28–38.

15.

Teller

L. W.

, and Sutherland

E. C.

. The Structural Design of Concrete Pavements. Public Roads, Vol. 10, No. 12, 1930.

16.

Lee

L. H.

, and Ludema

K. C.

. Friction and Wear of Polymers. Tribology Series 6. Elsevier, Amsterdam, Netherlands, 1981.

17.

Jones

G. M.

, Darter

M. I.

, and Littlefield

. Thermal Expansion-Contraction of Asphalt Concrete. Proc., Association of Asphalt Paving Technologists, Vol. 37, 1968.

18.

Lee

S. W.

Characteristics of Friction Between Concrete Slab and Base. KSCE Journal of Civil Engineering, Vol. 4, No. 4, 2000.