PREDICTING FIELD CONCRETE TEMPERATURE USING AN INTEGRATED MODLE
A new model was developed for predicting the temperature development in concretepavement. In this model, concrete temperature was determined based on the heat of hydrationof various cementitious materials under field construction and environmental conditions. Theheat of hydration was predicted according to the Arrhenius concept. The heat exchange inconcrete pavements was computed with the transient heat transfer mode provided by acommercial computer program, FEMLAB (Finite Element Modelling Laboratory).Conduction, convention, solar absorption, and irradiation were considered as the pavementboundary conditions. The effects of cementitious materials, concrete mix design, pavementstructure design, and environmental conditions were evaluated. The results indicate that thenew model well predicted the temperature distributions inside a concrete pavement with time.The model can be used to optimize concrete mix design, to assess field concrete strength, andto select concrete placement temperature and construction conditions for minimizing theconcrete thermal stress.
Zhi Ge KeJin Wang
Department of Construction Management and Engineering,North Dakota State University,USA Department of Civil,Construction,and Environmental Engineering,Iowa State University,USA
国际会议
南京
英文
1125-1138
2008-10-13（万方平台首次上网日期，不代表论文的发表时间）