塑钢纤维轻骨料混凝土力学性能及最佳纤维掺量试验研究  

Experimental Investigation on Mechanical Properties and Optimal Fiber Content in Plastic Steel Fiber Reinforced Lightweight Aggregate Concrete

作　　者：牛建刚[1] 李京军[1] 尹亚柳 李云云[1] 

机构地区：[1]内蒙古科技大学建筑与土木工程学院,包头014010 [2]重庆大学材料科学与工程学院,重庆400045

出　　处：《硅酸盐通报》2016年第1期87-91,共5页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(51368042);内蒙古自然科学基金(2014MS0528)

摘　　要：以不掺塑钢纤维的LC30轻骨料混凝土为基准,研究了塑钢纤维掺量变化(5 kg/m^3、7 kg/m^3、9 kg/m^3、11 kg/m^3、13 kg/m^3)对轻骨料混凝土抗压、劈裂抗拉、抗折、弯曲韧性及抗冲击性能的影响,结果表明:塑钢纤维对轻骨料混凝土抗压性能改善效果不明显,但能显著提高轻骨料混凝土的劈裂抗拉强度、抗折强度、弯曲韧性及抗冲击性能。综合各项性能指标给出塑钢纤维用于结构轻骨料混凝土的建议掺量为9 kg/m^3。The LC30 LWAC without plastic steel fiber was used as a benchmark of concrete. The tests with different dosage of plastic steel fiber （i. e. 5 kg/m^3 ,7 kg/m^3 ,9 kg/m^3 ,11 kg/m^3 ,13 kg/m^3） were carried out for effects on the mechanical properties of LWAC, including compressive strength, splitting tensile strength, flexural strength, flexural toughness and impact strength. The influences of the dosage of plastic steel fiber on the mechanical properties of LWAC were presented. It is noted that plastic steel fiber has no much influence on the compressive strength but can significantly improve the tensile strength, flexural strength, impact resistance and toughness. Based on the various performance indicators, the optimal fiber content of 9 kg/m^3 is proposed.

关 键 词：塑钢纤维 轻骨料混凝土 力学性能 纤维掺量 

分 类 号：TU528[建筑科学—建筑技术科学]