矿用多功能类砂岩质高强度透水混凝土试配试验  

Trial Configuration Test of Multifunctional Sandstone-like High Strength Pervious Concrete for Mine

作　　者：周雷强 司马珂冰 李昊 李佳 ZHOU Leiqiang;SIMA Kebing;LI Hao;LI Jia(Henan Third Geological Exploration Institute Co.,Ltd.;Henan Science and Technology Innovation Center of Natural Resources(Application Research of Information Perception Technology);School of Energy Scienceand Engineering,Henan Polytechnic University)

机构地区：[1]河南省第三地质矿产调查院有限公司 [2]河南省自然资源科技创新中心(信息感知技术应用研究) [3]河南理工大学能源科学与工程学院

出　　处：《现代矿业》2024年第5期109-114,共6页Modern Mining

基　　金：河南省高等学校重点科研项目(编号:21A440010)。

摘　　要：为探究水泥、砂岩碎渣、石英砂等原材料不同配比时胶结类砂岩质材料强度的变化规律,辅助少量添加剂配制具有一定透水性能的矿用多功能混凝土,采用正交设计的方法将原材料制备成不同配比的标准圆柱体试样,并借助YAW-150B全自动液压试验机开展了轴向压缩力学试验。试验结果表明:水灰比、砂岩废渣与水泥比和砂胶比3个因素都会对试件的强度产生影响。当渣泥比和砂胶比一定时,水灰比由0.39增至0.51的过程中,试件的抗压强度先增大后减小;水灰比为0.42时,试件强度达到最大,随着水灰比继续增大,类岩质试件的强度逐渐减小。渣泥比与类岩质材料的强度呈负相关关系,砂胶比由0.3增大到1.5的过程中,试件强度缓慢提升,砂胶比为0.9时的试件强度达到最大,随后试件强度随砂胶比的增大而快速下降。同时研究得出,研制的矿用类砂岩质混凝土的透水性与其厚度呈负相关关系,可为充填采矿时采场封闭墙厚度的确定提供理论参考。In order to explore the variation law of the strength of cemented sandstone-like materials with different ratios of raw materials such as cement,sandstone debris and quartz sand,a small amount of additives are used to prepare a mine multifunctional concrete with a certain water permeability.The raw mate⁃ rials are prepared into standard cylinder samples with different proportions by orthogonal design method, and the axial compression mechanical test is carried out by means of YAW-150 B automatic hydraulic test⁃ ing machine.The test results show that the three factors of water cement ratio,sandstone waste residue to ce⁃ ment ratio and water-solid ratio will affect the strength of the specimen.When the slag-cement ratio and wa⁃ ter-solid ratio are constant,the compressive strength of the specimen increases first and then decreases when the water-cement ratio increases from 0.39 to 0.51. When the water-cement ratio is 0.42,the strength of the specimen reaches the maximum. As the water-cement ratio continues to increase,the strength of the rock-like specimen gradually decreases.The slag-cement ratio is negatively correlated with the strength of the rock-like material. When the water-solid ratio increases from 0.3 to 1.5,the strength of the specimen in⁃ creases slowly. When the water-solid ratio is 0.9,the strength of the specimen reaches the maximum,and then the strength of the specimen decreases rapidly with the increase of the water-solid ratio.At the same time,it is concluded that the permeability of the developed mine sandstone-like concrete is negatively corre⁃ lated with its thickness,which can provide a theoretical reference for the determination of the thickness of the closed wall in the filling mining.

关 键 词：试配试验 多功能混凝土 类砂岩质材料 强度特征 透水特性 

分 类 号：TU528[建筑科学—建筑技术科学]