Effects of Construction Conditions on Built-In Temperature Gradient of Concrete Pavement: A Numerical Study

Abstract:

The built-in temperature gradient of concrete pavement formed during hardening period caused by various construction conditions will permanently exist in the pavement, which will have significant influence on the service behavior of concrete pavement. However, it’s still not involved in the current Specifications of Cement Concrete Pavement Design for Highway in China. In this paper, a user subroutine based on the ABAQUS code was developed to simulate the effects of weather condition, paving time, curing method, raw material temperature on built-in temperature gradient. The analyses indicate that these factors always produce obvious positive gradient in the slab and the influences of the first three aspects are obvious and the paving temperature of mixture has limited effect on the increasing of the final set temperature gradient. Furthermore, built-in temperature gradient is proposed as an index to evaluate the influences of various construction factors and optimize construction measures.

• Periodical: Advanced Engineering Forum (Volume 5)
• Pages: 382-388
• DOI: https://doi.org/10.4028/www.scientific.net/AEF.5.382
• Online since: July 2012
• Authors: Lei Quan, Bo Tian, De Cheng Feng, Xin Kai Li
• Keywords: Built-In Temperature Gradient, Cement Concrete Pavement, Construction Conditions, Numerical Simulation

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