摘要
聚合物改性多孔混凝土,克服了普通多孔混凝土强度低的缺点,较普通多孔混凝土具有较高的抗压强度,尤其弯拉强度有明显改善。通过室内试验,研究了采用丙烯酸类-聚羧酸型水溶性改性剂的单一粒径改性多孔混凝土(PPC)三点弯拉疲劳性能。结果表明:PPC的等效疲劳寿命的统计分布近似于两参数的Weibull分布。并通过回归分析,得到对应于不同生存概率(0.50~0.95)的S-N关系曲线和回归方程。PPC的疲劳寿命按降序排列为PPC-27.5、PPC-32.5和PPC-37.5。
The compressive strength and bending strength of the polymer modified porous concrete is better.In this study,the laboratory experiment was adopted to study the three-point bending fatigue performance of single sized polymer modified porous concrete(PPC)adopting acrylic acid-polycarboxylic acid type water-soluble modifier.The results show that the statistical distribution of the equivalent fatigue life of PPC approximately followed the two-parameter Weibull distribution.By regression analysis,the S-N relation curve and regression equation were obtained for the different survival probability(0.50~0.95).The fatigue life of PPC in descending order was PPC-27.5,PPC-32.5 and PPC-37.5.
作者
王崇涛
李宜锋
滕厚军
刘兆平
WANG Chongtao;LI Yifeng;TENG Houjun;LIU Zhaoping(CCCC First Highway Consultants Co.,Ltd.,Xi'an 710075,China;Rizhao Highway Administration,Rizhao 276800,Shandong,China)
出处
《路基工程》
2018年第2期33-36,41,共5页
Subgrade Engineering
基金
中央高校基本科研业务费专项资金项目(310821163502)
河南省交通科技项目(2007PⅡ04)
陕西省交通科技项目(13-04K
13-06K)
