高渗高强混凝土材料强度特性试验及参数确定  

Strength Characteristic Experiment and Parameters Determination of High Permeability high Strength Concrete Material

作　　者：谭仪忠[1] 刘元雪[1] 葛增超[1] 赵吉昌[1] 

机构地区：[1]后勤工程学院岩土力学与地质环境保护重庆市重点实验室,重庆401311

出　　处：《后勤工程学院学报》2015年第4期31-35,73,共6页Journal of Logistical Engineering University

基　　金：重庆市自然科学基金项目(CSTC 2014jcyj A30011)

摘　　要：高渗高强混凝土是一种兼具高渗透性和高强度的新材料,用在离壁式地下工程中既能确保通畅地排除围岩周边地下水,又能提高地下工程结构自身的强度,充分发挥其减震层的作用。通过正交试验得出影响材料单轴抗压强度与抗劈裂强度的4个因素的排序,结果显示:对抗压强度与抗劈裂强度影响最大的2个因素是灰集比与水灰比,聚灰比对抗劈裂强度的影响也较为明显。从材料一点的三向应力状态出发,通过对试验结果的计算得到岩土工程中广泛运用的内摩擦角和黏聚力等强度参数,经回归分析发现材料的黏聚力与抗压强度之间符合线性增长关系,该结果可以直接为岩土工程数值计算中的数据应用提供依据。High permeability-high strength concrete is a new material which is the characterized with high permeability and high strength. When it is used in away-from underground space, it can help the around rock to drain the ground water, and it can al- so improve the structure strength and give full play to the role of the shock absorption layer. The influence factors of tensile and com- pression strength can be confirmed through orthogonal experiment. The results show that the biggest two factors against the tensile and compression strength are water cement ratio and cement aggregate ratio, while the polymeric ash ratio can impact the tensile strength also. Then according to the three-dimension stress, the strength parameters of cohesion and internal friction angle which are widely used in geotechnical engineering can be calculated by the test results. It can be found that the relationship between compres- sive strength and cohesion are of linear. The results can be used in geotechnical calculation directly.

关 键 词：高渗高强混凝土 地下工程 正交试验 极差分析 

分 类 号：TU551[建筑科学—建筑技术科学]