气候变化研究进展 ›› 2015, Vol. 11 ›› Issue (5): 313-318.doi: 10.3969/j.issn.1673-1719.2015.05.003

• 气候变化对水工材料的影响专栏 • 上一篇    下一篇

长历时高温干旱对水工混凝土建筑物的影响

梅国兴1,2,王珩1   

  1. 1南京水利科学研究院,南京 210029;
    2水利部水工新材料工程技术研究中心,南京 210029
  • 收稿日期:2015-07-06 修回日期:2015-08-18 出版日期:2015-09-30 发布日期:2015-09-30
  • 通讯作者: 梅国兴 E-mail:gxmei@nhri.cn
  • 基金资助:

    水利部公益性行业科研专项

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

Mei Guoxing1, 2, Wang Heng1   

  1. 1 Nanjing Hydraulic Research Institute, Nanjing 210029, China; 
    2 Research Center on New Materials in Hydraulic structures, MWR, Nanjing 210029, China
  • Received:2015-07-06 Revised:2015-08-18 Online:2015-09-30 Published:2015-09-30

摘要: 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。

关键词: 长历时高温干旱, 水工混凝土, 水工建筑物, 干缩变形, 开裂

Abstract: 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.

Key words: continuous high temperature drought, hydraulic concrete, hydraulic structures, shrinkage performance, crack

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