东南大学学报（自然科学版）2017，Vol.47Issue(6)：1221-1226,6.DOI:10.3969/j.issn.1001-0505.2017.06.022
骨料类型及纤维对高延性水泥基复合材料性能的影响
Effects of aggregate type and fibre on properties of high ductility cementitious composites
摘要
Abstract
To investigate the effects of aggregate type and fibre on the properties of high ductility cementitious composite (HDCC),four series of HDCCs were prepared.The HDCCs used ordinary river sand and carborundum as aggregates,and used polyvinyl alcohol (PVA) fibre and PVA and micro-copper-coated steel hybrid fibres as reinforced fibres.The flexural and compressive strength,flexural toughness,uniaxial tensile properties and abrasion resistance were studied.The morphology of PVA fibre of tensile test specimens was observed by the scanning electron microscopy.The results show that the effect of aggregates on flexural strength is obvious,but the effects on compressive strength,bending toughness and abrasion resistance are not significant.Micro-steel fibre has an evident effect on flexural strength,bending toughness and abrasion resistance.The effect of micro-steel fibre on the ductility depends on the aggregate of HDCC.When the natural river sand is used as aggregate,the micro-steel fibre reduces the ductility of HDCC;while the carborundum is used as aggregate,the micro-steel fibre improves the ductility of HDCC.The carborundum increases tensile strength,but significantly reduces the ductility of HDCC.关键词
骨料/纤维/延性/弯曲韧性/抗冲磨/金刚砂Key words
aggregate/fibre/ductility/toughness/abrasion resistance/carborundum分类
建筑与水利引用本文复制引用
郭丽萍,陈波,孙伟,谌正凯,张文潇..骨料类型及纤维对高延性水泥基复合材料性能的影响[J].东南大学学报（自然科学版）,2017,47(6):1221-1226,6.基金项目
国家重点研发计划资助项目(2016YFC0401610)、国家自然科学基金资助项目(51378113,51438003)、江苏省自然科学基金资助项目(BK20151072)、江苏省六大人才高峰B类资助项目(JZ-004). （2016YFC0401610）
