摘要
对二滩水电站大坝不同岩性的全级配混凝土徐变进行了试验研究,并与湿筛混凝土徐变进行比较.试验结果表明,原级配混凝土大试件的徐变较湿筛混凝土小试件的徐变低30%左右;原级配和湿筛二级配混凝土的徐变比与相应的灰浆率比成正比;正长岩骨料的混凝土徐变大于玄武岩骨料的混凝土徐变.
Many creeping tests on the naturally graded concrete of different rocks at the Ertan arch dam have been conducted and a comparison with creeping tests of the wet screened concrete has been done. It is shown that the creeping of large concrete specimens of natural gradation is about 30% less than that of small specimens of the wet screened concrete. The creepage of the concrete of natural gradation and the creepage of the concrete of wet screened second gradation are proportional to related mortar rate. The creep of basalt aggregate concrete is smaller than that of syenite aggregate concrete. It is proposed that the creep of mass concrete of natural gradation be calculated by converting. the result from small specimen tests.
出处
《水利水电科技进展》
CSCD
2000年第1期30-33,共4页
Advances in Science and Technology of Water Resources
关键词
混凝土
原级配
湿筛法
徐变特性
拱坝
concrete
natural gradation
wet screened method
cement slurry rate
creep beharior
