聚丙烯纤维抗裂混凝土的试验研究及其有限元分析  

Experimental Study on Crack-resisting of Content with Polypropylene Fiber and its Finite Element Analysis

作　　者：赵丽杰[1,2] 樊东辉[1] 

机构地区：[1]驻马店职业技术学院,河南驻马店463000 [2]河南中大建设工程有限公司,河南驻马店463000

出　　处：《漯河职业技术学院学报》2015年第2期18-20,共3页Journal of Luohe Vocational Technical College

基　　金：北京自然科学基金项目(项目编号:2112012);北京教育委员会基金项目(项目编号:KM201210016009)

摘　　要：纤维增强是水泥基材料高性能化的途径之一,以不同掺量的聚丙烯纤维加入混凝土中,研究其对混凝土物理力学性能的影响。结果表明,1.0kg/m3掺量能提高抗压强度4.2%,提高劈裂强度8.5%,降低28天龄期弹性模量,混凝土的变形性能提高;采用有限元法分析表明,聚丙烯纤维混凝土内形成了较大应力梯度,说明其可以用于基础混凝土。Fiber reinforcement is one of the ways to acquire high performance of＇ cement material, and it is studied by adding different amount of polypropylene fiber into concrete. The results showed that ： 1.0kg/m3 doping amount in cement can increase compressive strength by 4.2% and improve the splitting strength by 8.5% , reduce 28 - day long elastic modulus and improve the deformability of the concrete; by using the finite element method analysis, concrete with polypropylene fiber formed large stress gradient, showing that it can be used in the concrete foundation.

关 键 词：聚丙烯纤维 有限元 温度应力 抗裂 

分 类 号：TU578.12[建筑科学—建筑技术科学]