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Issue:
Concrete lining shrinkage mechanism and compensation method
Author(s):
LIU Li
Pages:
116
-
118
Year:
2015
Issue:
12
Journal:
Water Conservancy Science and Technology and Economy
Keyword:
混凝土衬砌
;
渠道
;
收缩机理
;
补偿方法
;
Abstract:
我国西北地区渠道防渗效果欠佳,渗漏损失较大,渠道输水利用效率低于全国平均值,灌溉效率成为制约当地农业发展的重要因素.研究表明,使用具有抗裂防渗功能的混凝土作为衬砌材料可以提高渠道的输水利用效率.首先对混凝土裂缝出现原因及分类进行分析,讨论了补偿收缩混凝土的现状,重点研究了混凝土衬砌收缩机理,并提出了相应的补偿方法.希望为今后的渠道衬砌无缝设计提供参考.
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