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《Sichuan Building Science》 2017-04
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Effect of fiber content on plastic shrinkage of engineered cementitious composite

WU Yonghua;LIU Jingtao;DENG Mingke;DU Weiliang;CHEN Chang;School of Material and Mineral Resource,Xi'an University of Architecture and Technology;School of Civil Engineering,Xi'an University of Architecture and Technology;  
Application of engineered cementitious composite( ECC) was directly influenced by early plastic shrinkage. The effect of fiber volume fraction on early plastic shrinkage of ECC was researched by means of non-contact sensor. The results showed that the early plastic shrinkage of ECC decreased with the increasing of polyvinyl alcohol( PVA) fiber volume fraction,whose content was from 0 to 0. 9%. However,the early plastic shrinkage stabilized when the fiber volume fraction was more than 0. 9%. Formula for predicting early shrinkage of high fiber volume fraction ECC was designed by regression analysis based on the test results.
【Key Words】: engineered cementitious composite plastic shrinkage PVA fiber prediction formula
【Fund】: 国家自然科学基金项目(51578445)
【CateGory Index】: TU528.572
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