长期海洋环境下混凝土的拉压关系现场试验研究  

Field Test Research on Relationship between Compressive and Tensile Strength of Concrete Exposed to Long-term Maritime Environment

作　　者：姚未来 江世永[2] 飞渭[1] 李雪阳[1] 

机构地区：[1]后勤工程学院军事土木工程系,重庆401311 [2]后勤工程学院训练部,重庆401311

出　　处：《后勤工程学院学报》2016年第1期13-18,28,共7页Journal of Logistical Engineering University

基　　金：重庆市高校优秀成果转化重点项目(KJZH14220)

摘　　要：为研究经长期海洋环境劣化后混凝土的抗拉强度与抗压强度关系（以下简称拉压关系）,赴舟山市某废弃港口分别于4处受海洋环境长期侵蚀但程度不同的位置,现场钻芯、加工、遴选,共获取86个芯样。通过对芯样进行抗压试验与劈裂抗拉试验,发现混凝土经海洋环境长期侵蚀后,劈裂抗拉强度随抗压强度的增大而增大,且拉压关系相对稳定;长期处于海洋环境下的混凝土劈裂抗拉强度为（fcu,150/18＋0.5,fcu,150/18＋3）,该范围适用于抗压强度为10~50 MPa的混凝土,可为研究长期海洋环境下混凝土的力学性能提供参考依据。In order to study the relationship between compressive and tensile strength of concrete in marine environment, concrete core samples were drilled at a deserted harbor in Zhoushan district. After processing and selection, 86 cores were finally acquired from 4 different places of the harbor, which were exposed to marine environment with different degrees of erosion. The compressive and tensile split test of cores show the relationship between compressive and tensile split strength is relatively stable after long time exposure to deteriorated situation, that when the concrete compressive strength increases, the tensile split strength tends to increase as well. It is proposed that after long time exposure to marine environment, the tensile split strength is between （fcu,150/18＋0.5, fcu,15/18＋3）, which can be applied to concrete with compressive strength varying from 10 MPa to 50 MPa. The results of this study can provide reference to those studies focusing on mechanical properties of concrete which are long-term exposed to marine environment.

关 键 词：海洋环境 长期作用 拉压关系 劈裂抗拉强度 抗压强度 

分 类 号：TU501[建筑科学—建筑技术科学]