聚丙烯长纤维高性能混凝土性能研究  

Experimental study of behaviour of modified macro-polypropylene fiber reinforced high performance concrete

作　　者：丁一宁[1] 曹继锋[1] 

机构地区：[1]大连理工大学土木水利学院,辽宁大连116024

出　　处：《大连理工大学学报》2007年第5期707-711,共5页Journal of Dalian University of Technology

基　　金：国家自然科学基金资助项目(50278013)

摘　　要：根据国际标准对两种长径比的新型聚丙烯长纤维增强高性能混凝土的工作度、含气量、强度及弯曲韧性进行了试验研究.其中对这两种纤维混凝土的弯曲韧性按照国际材料与结构联合会(RILEM)标准进行了深入的研究,得出了不同组纤维混凝土的能量吸收值和等效抗弯强度.试验表明,聚丙烯长纤维具有良好的增韧效果,长径比大及单位质量根数较多的纤维增韧效果更为显著.The experimental results for workability, air content, compressive strength and flexural toughness of two kinds of modified macro-polypropylene fiber reinforced high performance concrete were given. The two types of fiber have different aspect ratios. The experiments were carried out according to different international guidelines. The flexural toughness was deeply analyzed according to RILEM guideline. The energy absorption capacity and equivalent flexural strength were calculated. The results show that the modified macro-polypropylene fiber can strongly enhance the flexural toughness of concrete and the fiber with large slenderness ratio and more fiber per kg presents a better performance of flexural toughness.

关 键 词：高性能混凝土 聚丙烯长纤维 弯曲韧性 

分 类 号：TU377.94[建筑科学—结构工程]