长历时高温干旱对水工混凝土建筑物的影响

水工混凝土在干旱环境下的干缩变形、抗裂性能对水利工程的影响较大，本文采用环境温度、相对湿度的交互作用来模拟高温干旱环境，采用典型工程渡槽和面板混凝土配合比配制试验用混凝土，在不同的温度和相对湿度条件下进行试验，研究了渡槽混凝土、面板混凝土的干缩、力学强度、抗裂特性的发展变化规律，并对已建水工建筑物的混凝土在长历时干旱环境下的干缩变形性能进行了探讨。

Effect of Continuous High Temperature Drought on the Properties of Hydraulic Structures

The water conservancy projects under continuous drought environment are greatly influenced by shrinkage deformation and crack resistance of hydraulic concrete. The environment temperature and relative humidity are used to simulate the high temperature drought environment. The typical complex stress structure and thin wall structure of concrete were chosen to conduct test under different temperature and relative humidity. The changing laws of drying shrinkage characteristics, mechanical strength properties, anti-cracking characteristics of the aqueduct and panel concrete under different temperature and humidity conditions were revealed. And the shrinkage performance of established hydraulic structure concrete under continuous high temperature drought environment was also discussed.