|Table of Contents|

Experiment on Mechanical Properties of Ultra-high Performance Reinforced Concrete with Hybrid-fiber(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2012年02期
Page:
55-60
Research Field:
Publishing date:

Info

Title:
Experiment on Mechanical Properties of Ultra-high Performance Reinforced Concrete with Hybrid-fiber
Author(s):
SUN Xiao-kai1; 2;  DIAO Bo1; 2;  YE Ying-hua1; 2;  GENG Jiao1;  MA Li-ya1
1. Department of Civil Engineering, Beihang University, Beijing 100191, China; 2. State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, Guangdong, China
Keywords:
ultra-high performance fiber reinforced concrete;  mechanical property;  hybrid-fiber;  bend ductility;  ductility;  flexural strength
PACS:
TU528.572
DOI:
-
Abstract:
When doped volume ratio of fiber(volume fraction)was 2.0%, through cubic compressive tests and beam flexural tests, hybrid-fibers between end-hooked and superfine tape steel fibers with different ratios of length to diameter and different parameters were used to study their effects on compressive strength, flexural strength, ductility of the ultra-high performance concrete(UHPC). The results show that the end-hooked and superfine fibers have their own dominative effects on mechanical properties of the bearing capacity and ductility behavior. With the increase doped volume ratios of superfine fibers, the mechanical properties of compressive strength, flexural strength and bend ductility of the UHPC increase. With the increase doped volume ratios of end-hooked fibers, the beam has a better performance on ductility. Hybrid-fibers between end-hooked and superfine fibers can enhance performance in all aspects of mechanical properties of concrete. Taking all factors of mechanical property index and economical efficiency into consideration, it is the best mixture proportion when doped volume ratios of end-hooked and superfine fibers are 0.5%, 1.5%.

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Last Update: 2012-06-20