玻璃纤维与聚丙烯纤维混凝土性能的对比试验  

Experimental study on behaviors of glass fiber reinforced concrete and polypropylene fiber reinforced concrete

作　　者：丁一宁[1] 杨楠[1] 

机构地区：[1]大连理工大学海岸和近海工程国家重点实验室,辽宁大连116024

出　　处：《水利水电科技进展》2007年第1期24-26,共3页Advances in Science and Technology of Water Resources

摘　　要：设计了常温下普通强度等级混凝土和高性能自密实混凝土的试验,对比分析了玻璃纤维和聚丙烯纤维在掺量一致(0.5kg/m3和1.0kg/m3)、长度相近的条件下对混凝土性能的影响。试验表明,玻璃纤维和聚丙烯纤维均能提高普通混凝土的抗折强度和劈拉强度,但玻璃纤维的效果优于聚丙烯纤维。玻璃纤维和聚丙烯纤维对高性能自密实混凝土抗压强度和抵抗早龄期自由收缩的能力的影响区别不明显,但均能改善高性能自密实混凝土受压时的脆性破坏特征。Experiments were performed to study the influences of glass fiber and polypropylene fiber on the behavior of concrete. In the experiments, two kinds of fibers with the similar length were mixed with the normal concrete and self-compacting high- performance concrete （SCHPC） at the same dosages （0.5 kg/m^3 and 1.0 kg/m^3, respectively）.The results indicate that both of the two kinds of fibers can improve the flexural tensile strength and the splitting tensile strength of the normal concrete, while the effect of glass fiber is superior to that of polypropylene fiber, and that there is little difference between the influences of the two kinds of fibers on the compressive strength and free shrinkage at the early age of SCHPC , and both of them can improve the behavior of brittle failure of SCHPC under compression.

关 键 词：玻璃纤维 聚丙烯纤维 纤维混凝土 抗折强度 劈拉强度 抗压强度 自由收缩 

分 类 号：TU528.572[建筑科学—建筑技术科学]