双掺聚丙烯纤维与聚酯纤维混凝土抗冲击性能试验研究  

Research on the impact resistance properties of polypropylene fiber and polyester fiber concrete

作　　者：张超[1] 王春光[1] 张勇[1] 

机构地区：[1]空军勤务学院机场工程与保障系,江苏徐州221000

出　　处：《混凝土》2017年第5期99-102,共4页Concrete

基　　金：国家自然科学基金项目(51478462;51508565)

摘　　要：利用压汞法(MIP)测试了不同锂渣掺量的C30、C60混凝土的孔结构参数,计算了被测混凝土的孔体积分形维数、孔轴线分形维数,并研究了混凝土气体渗透系数、锂渣掺量与孔体积分形维数、孔轴线分形维数之间的关系。结果表明,混凝土的气体渗透系数与孔体积分形维数相关性高;C60混凝土在锂渣掺量为10%时,孔体积分形维数和孔轴线分形维数最大;随着锂渣掺量的提高,C30混凝土孔体积分形维数和孔轴线分形维数呈降低的趋势。It used the drop-weight test equipment for impact test to polypropylene fiber and polyester fiber concrete,the contents and length of polyester fiber is constant,add the polypropylene fiber with different content and length,get the images about time-displacement and time-force.From the analysis of images,it can conclude that in terms of the improvement of anti-impact properties of concrete,there exists an optimum content when the volume of polypropylene fiber is between 0.6 and 1.2 kg/m^3,with the impact height of 350 mm.The fibers with length of 6,9,12 mm are used in this study,and it is found that displacement after being impacted is increased with the increasing of the length of fibers.This shows that the deformation after impact is in inverse proportion to the length of fibers.

关 键 词：聚丙烯纤维 聚酯纤维 抗冲击性能 

分 类 号：TU528.041[建筑科学—建筑技术科学]