Temperature Gradient of Concrete Pavement Slab Overlaid with Asphalt Surface Course

Abstract

In the structural design of composite pavement with a concrete pavement slab overlaid with an asphalt surface course, it is very important to estimate the temperature gradient in the concrete slab. An asphalt surface course reduces the temperature gradient in an underlaid concrete slab, resulting in the reduction of thermal stress of the concrete slab. This effect was investigated by temperature measurement in model pavements and by thermal conductivity analysis. Thermal properties were estimated by a backanalysis by using measured temperatures over 1 year. From the numerical simulations varying the thickness of asphalt surface and concrete slab, the relationship between the reduction effect and the asphalt thickness was derived as a function of the thickness of asphalt surface course, which can be used in the structural design of the composite pavement.

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References

Nishizawa

, Shimeo

, Komatsubara

, and Koyanagawa

A Design Method of Composite Pavement with Asphalt Surface Course and Continuously Reinforced Concrete Base Course. Proc., 8th International Symposium on Concrete Roads, Vol. 1, Lisbon, Portugal, 1998, pp. 117–128.

Iwama

Experimental Studies on the Structural Design of Concrete Pavement. Pavement Laboratory, Public Works Research Institute, Ministry of Construction, Tokyo, 1964.

Manual of Portland Cement Concrete Pavement. Japan Road Association, 1984.

Shina

, Matsui

, and Smith

T. F.

Estimation of Temperatures in Asphalt Pavement Using Ground Climate Observation Data. Japanese Journal of Pavement Engineering, Vol. 2, 1997, pp. 105–112.

Zienkiewicz

O. C.

The Finite Element Method, 3rd ed. McGraw-Hill, New York, 1977.

Matsui

, Nishida

, Tsuchibashi

, and Shioda

Estimation of Thermal Parameters of Mass Concrete Structures by Back-Analysis. Proceedings of the Annual Meeting of Japan Concrete Institute, Vol. 16, No. 1, 1994, pp. 1347–1352.

Nishida

, Shioda

, Tsuchibashi

, and Matsui

Estimation of Thermal Parameters of Concrete Based on In Situ Data. Japanese Journal of Materials. Concrete Structures and Pavements, Vol. 32, No. 544, 1996, pp. 89–100.

Himeno

, Watanabe

, and Maruyama

Temperature Distributions in Asphalt Pavements. Proc., 3rd Workshop on Paving in Cold Areas, Canada/Japan Science and Technology Consultations, 1986, pp. 243–275.

Specification of Concrete for Construction. Japan Society of Civil Engineers, 1996.

10.

Tokuda

, and Shoya

Considerations on Measured Thermal Characteristics of Concrete. Proceedings of the Japanese Society of Civil Engineers, No. 212, 1973, pp. 89–98.