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Analysis on Full-Graded and Wet-Screened Tests for Jinping I Arch Dam Concrete

TANG Tian-guo1,2,DUAN Shao-hui2,DUAN Yun-ling3(1.School of Architecture and Environment,Sichuan University,Chengdu 610065,China; 2.Ertan Hydropower Development Co.Ltd.,Chengdu 610051,China; 3.Department of Hydraulic and Hydropower Engineering,Tsinghua University,Beijing 100084,China)  
Mechanical tests of dam concrete are still from wet-screened tests for small-scaled samples.But wet-screened experiments are often picked out large aggregates above 40 mm.Wet-screened results must be different from concrete's full-graded tests.So wet-screened tests not exactly reflect mechanical performance of dam's concrete.Based on demand of concrete's design strength of Jinping I Arch Dam,full-graded tests from uniaxial compression,tension,limit tension and elastic modular were completed.It shows that large aggregates concrete suffers from size's and wet-screened effect,large aggregates concrete's strength and deformation are both less than those from wet-screened tests at 28 days age.
【Fund】: 二滩水电开发有限责任公司合同资助项目(EHDCA-201007)
【CateGory Index】: TV431
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