异形钢纤维改善混凝土性能研究  

STUDY ON MODIFICATION OF DEFORMED STEEL FIBER REINFORCED CONCRETE

作　　者：胡晓波[1] 

机构地区：[1]中南大学土木建筑学院,长沙410075

出　　处：《工业建筑》2006年第9期62-67,共6页Industrial Construction

摘　　要：采用6种异形钢纤维在体积掺量分别为0.5%、1.0%的情况下,配制CF30、CF50异形钢纤维混凝土,试验结果表明,异形钢纤维混凝土抗折、抗剪和劈拉强度以及弯曲韧性,较基准混凝土有明显提高;干缩值降低,早期塑性开裂也明显减少;不同特征的异形钢纤维改性效果也存在差异。研究发现,《钢纤维混凝土试验方法》(CECS 13∶89)计算纤维混凝土承载能力变化系数的方法有偏差。Six sorts of deformed steel fibers （DSF） dosaging 0.5% or 1.0% by bulk are used to prepare CF30 and CFSO deformed steel fiber （DSF） reinforced concretes. The experiment results indicate that not only the flexural strength , shearing strength,splitting tensile strength and flexural properties of deformed steel fiber reinforced concrete （DSFRC） are significantly improved as compared with normal concrete, but also the drying shrinkage value and early plastic cracking are obviously decreased, and the modification effect of DSFs with different characteristics are different.The results also indicate that the method of calculating fiber concrete＇s capability coefficients in ＂Test Method of Steel Fiber Reinforced Concrete＂ （ CECS 13 ： 89） has deviation.

关 键 词：混凝土性能 异型钢纤维 改善 

分 类 号：TU528.572[建筑科学—建筑技术科学]