Effects of Polypropylene Fibers on the Physical and Mechanical Properties of Recycled Aggregate Concrete

被引：29

作者：

Matar, Pierre ^{[1
]}

Zehil, Gerard-Philippe ^{[2
]}

机构：

[1] Lebanese Univ, Fac Engn, Branch 2, Roumieh, Lebanon

[2] Notre Dame Univ Louaize, Fac Engn, Zouk Mosbeh, Lebanon

来源：

JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION | 2019年 / 34卷 / 06期

关键词：

concrete; recycled aggregate; fiber reinforcement; physical properties; mechanical properties; SELF-COMPACTING CONCRETE; REINFORCED-CONCRETE; TENSILE-STRENGTH; COARSE AGGREGATE; BEHAVIOR; DURABILITY; PERFORMANCE; STEEL;

D O I：

10.1007/s11595-019-2196-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The viability of using polypropylene fibers (PPF) in concrete was largely studied. Yet, few of the existing research studies investigated the effects of PPF on the properties of concrete containing recycled concrete aggregate (RCA). Mixes with different RCA replacement ratios and different PPF content were designed and tested. The test results showed that the addition of PPF did not change significantly the compressive strength and the density of the concrete, but slightly decreased its modulus of elasticity and Poisson's ratio. The drop in the splitting tensile strength and the flexural strength due to RCA inclusions was to a large extent compensated by the PPF addition. The water absorption decreased and the percent voids increased with increased PPF addition. Correlations between the RCA content, the PPF content and the properties of concrete were studied. Useful regression models were proposed to predict the properties of concrete in relevant ranges of RCA and PPF content.

引用

页码：1327 / 1344

页数：18

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