垃圾渗滤液侵蚀下混凝土宏细观力学特性演化规律  

Evolution of macro and micro mechanical properties of concrete under the erosion of landfill leachate

作　　者：漆明毅 谭维佳[2] QI Mingyi;TAN Weijia(Yunnan Institute of Commerce and Industry,Kunming 650000,China;School of Geological Engineering and Surveying and Mapping,Chang′an University,Xi′an 710054,China)

机构地区：[1]云南工商学院,云南昆明650000 [2]长安大学地质工程与测绘学院,陕西西安710054

出　　处：《混凝土》2021年第11期14-20,共7页Concrete

基　　金：国家重点基础研究发展计划(973计划)资助项目(2017YFD0800501)。

摘　　要：目前针对混凝土力学特性的研究多集中在硫酸盐侵蚀、氯离子侵蚀、酸侵蚀、冻融循环等,对经垃圾渗滤液侵蚀后的混凝土力学特性演化规律的研究还处于空白阶段。考虑到微纳米压痕试验是新兴起的一种测定材料细/微观力学行为的新方法,重点采用微米压痕试验研究了垃圾渗滤液对混凝土试样表面和不同侵蚀深度处的细观力学特性的影响。同时,通过单轴压缩试验研究了混凝土在垃圾渗滤液侵蚀下的宏观力学特性演化规律。相关试验可以为了解垃圾渗滤液侵蚀条件下混凝土结构宏/细观力学特性演化规律提供科学依据。At present,the research on the mechanical properties of concrete mainly focuses on sulfate corrosion,chloride ion corrosion,acid corrosion,freeze-thaw cycle,etc.,and the research on the evolution law of concrete mechanical properties after being eroded by landfill leachate is still in the blank stage.Considering that micro nano indentation test is a new method to measure the micro/micro mechanical behavior of materials,the influence of landfill leachate on the micromechanical properties of concrete sample surface and at different erosion depth is studied.At the same time,the evolution law of macro mechanical properties of concrete under the erosion of landfill leachate is studied by uniaxial compression test.The relevant tests can provide scientific basis for understanding the evolution law of macro/micro mechanical properties of concrete structures under the condition of landfill leachate erosion.

关 键 词：混凝土 垃圾渗滤液 侵蚀作用 耐久性 宏细观力学特性 

分 类 号：TU528.01[建筑科学—建筑技术科学]