Research Progress on Hydration Heat of Mass Concrete

ZhiLong Li

doi:10.63313/AERpc.9100

Authors

ZhiLong Li Central South University of Forestry and Technology, Changsha, Hunan, China Author

DOI:

https://doi.org/10.63313/AERpc.9100

Keywords:

Mass Concrete, Hydration Heat, Temperature Field, Thermal Cracking, Temperature-Control Measures, Numerical Simulation

Abstract

Mass concrete is widely used in bridge pile caps, hydraulic structures, foundations of high-rise buildings, nuclear power projects, and large underground structures. Due to the large structural dimensions, the hydration heat generated inside concrete is difficult to dissipate rapidly, which often leads to a high early-age temperature rise and significant temperature difference between the interior and surface. When thermal deformation is restrained, thermal stress develops inside the structure. If the tensile thermal stress exceeds the early-age tensile strength of concrete, temperature cracks may occur, thereby affecting structural integrity, durability, and service safety. Based on previous studies, this paper reviews the research progress on hydration heat of mass concrete from the aspects of hydration heat mechanism, material and mix proportion control, construction temperature-control measures, temperature monitoring, and numerical simulation. Existing studies show that reducing the hydration heat of cementitious materials, optimizing the proportion of mineral admixtures, controlling placing temperature, adopting layered and block construction, strengthening thermal insulation and moisture curing, and using cooling pipes can effectively reduce peak temperature and internal-surface temperature difference. With the development of monitoring technologies and numerical methods, temperature control of mass concrete is gradually moving toward refinement, intelligence, and whole-process control..

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