纤维EPS吸能防护混凝土材料研究  

Study on Fiber EPS Concrete with Energy-absorption Shielding Protection Materials

作　　者：陈友治[1] 陈雍雍[1] 欧阳康[1] 孙涛[1] 李新平[1] 沈春华[1] 

机构地区：[1]武汉理工大学材料科学与工程学院,430070

出　　处：《混凝土与水泥制品》2015年第2期50-53,共4页China Concrete and Cement Products

基　　金：国家自然科学基金项目(51202172)

摘　　要：试验制备了钢纤维、聚丙烯纤维混杂的纤维EPS混凝土,考察了EPS混凝土及纤维EPS混凝土力学性能,以改变荷载速率的方式研究和表征纤维EPS混凝土的抗冲击性能。研究结果表明,EPS混凝土有较好的力学性能,在水胶比为0.26,EPS体积率为40%时,28d龄期抗压强度及抗折强度分别为22.03MPa,4.50MPa;低掺量的混杂纤维对纤维EPS混凝土抗压强度提高较小,但对韧性提高较大;相比普通混凝土,纤维EPS混凝土随着荷载速率增大极限抗压强度明显提高。In this experiment with steel fiber and polypropylene fiber, fiber EPS concrete was made, the mechanical properties of which were analyzed as well as EPS concrete, and anti-impacting properties of fiber EPS concrete were studied and characterized through varying the load rate. The research results show that the EPS concrete has good mechanical properties. When the water/cement ratio is 0.26 and the EPS volume rate is 40%, compressive strength and flexural strength of concrete after 28 days are respectively 22.03 MPa and 4.50 MPa. Low dosage of hybrid fibers can slightly improve compressive strength of fiber EPS concrete, but largely enhance the toughness of concrete. Compared with normal concrete, the ultimate compressive strength of fiber EPS concrete will be improved significantly with the load rate increased.

关 键 词：EPS混凝土 混杂纤维 力学性能 抗冲击性能 

分 类 号：TU528[建筑科学—建筑技术科学]