HDPE管混凝土延性和韧性的试验研究  

Experimental Study on Ductility and Toughness of HDPE-Pipe Concrete

作　　者：王俊颜[1] 杨全兵[1,2] 

机构地区：[1]同济大学材料科学与工程学院,上海200092 [2]同济大学先进土木工程材料教育部重点实验室,上海200092

出　　处：《建筑材料学报》2009年第4期394-397,共4页Journal of Building Materials

摘　　要：通过对素混凝土和高密度聚乙烯(HDPE)管混凝土的轴压应力应变曲线的计算,得到了延性和韧性的表征参数——延性系数和应变能;研究了管壁厚度、核心混凝土强度对HDPE管混凝土延性和韧性的影响.结果表明,HDPE管混凝土的延性和韧性均远大于素混凝土,并随管壁厚度的增加显著提高;核心混凝土强度的增大只能有限提高HDPE管混凝土的韧性,并且会大大降低HDPE管混凝土的延性.Ductility ratio and strain energy that are regarded as the characteristic parameters of ductility and toughness were calculated from axial stress-strain curves of plain concrete and HDPE-pipe concrete. Effect of pipe thickness and core-concrete strength on ductility and toughness of HDPE-pipe concrete was studied. The results indicate that the ductility and toughness of HDPE-pipe concrete is much better than those of the plain concrete. The increase in pipe thickness can enhance the ductility and toughness of HDPE-pipe concrete significantly. However, the increase in core-concrete strength can only enhance the toughness of HDPE-pipe concrete limitedly and consumedly impair the ductility of HDPE-pipe concrete.

关 键 词：HDPE管混凝土 塑管混凝土 延性 韧性 轴压应力应变曲线 

分 类 号：TU528.59[建筑科学—建筑技术科学]