AXIAL COMPRESSIVE BEHAVIOR OF NATURAL FLAX FRP TUBE ENCASED RECYCLED AGGREGATE CONCRETE

摘要：

　　A combination of natural fibre reinforced polymer(FRP)composites and recycled aggregate concrete(RAC)will lead a concrete with sustainability.To date,a large amount of studies have investigated RAC where the recycled aggregates(RAs)initiated from concrete rubble,while the use of RAs from masonry rubble for RAC is very limited.This paper investigated the axial compressive behavior of prefabricated natural flax FRP tube encased RAC columns that composing of partially clay brick aggregate(CBA).The structure was termed as FFRP-RAC-CBA.For the RAC,the replacement ratio of natural coarse aggregates by RAs used as 70%.The RAs consisted mainly of 60%of recycled clay brick aggregates.The experimental variables considered included:(1)strength of RAC-CBA;(2)FFRP tube thickness;(3)size of concrete cylinder.The experimental results shown that that the use of plant-based flax FRP tube increased the ultimate compressive strength and ductility of the confined RAC-CBA effectively.An increase in tube thickness resulted in a higher compressive strength and strain of the encased RAC-CBA.Furthermore,stress and strain models were proposed to predict and compare with experimental results of FFRP-RAC-CBA.

关键词： recycled aggregate concrete clay brick aggregate natural flax FRP confined concrete compressive behavior

作者: Liang Huang Chang Gao Libo Yan Bin Yan

作者单位: College of Civil Engineering,Hunan University,Changsha,China Centre for Light and Environmentally-Friendly Structures,Fraunhofer Wilhelm-Klauditz-Institut WKI,Bi

会议类型: 国际会议

会议名称: the Sixth Asia-Pacific Conference on FRP in Structures (APFIS2017)(第六届亚太纤维增强复合材料结构工程国际会议暨第十届全国建设工程FRP应用学术交流会)

会议地点: 新加坡

会议语种:英文

页码: 1-5

在线出版日期: 2017-07-19（万方平台首次上网日期，不代表论文的发表时间）