基于石膏砂浆的软弱岩层相似材料配合比试验研究  

Experimental study on mix ratio of similar materials in soft rock strata based on gypsum mortar

作　　者：程俊伟 崔文杰 孔令弟 王骁男 于海洋 徐程 Cheng Junwei;Cui Wenjie;Kong Lingdi;Wang Xiaonan;Yu Haiyang;Xu Cheng(Shandong Hi-speed Construction Management Group Co.,Ltd.,Jinan 250000,China;Shandong Hi-speed Lanshan-Linshu Highway Group Co.,Ltd.,Linyi 276713,China;Jinan Municipal Engineering Design&Research Institute,Jinan 250002,China;Shandong High Speed Geotechnical Technology Co.,Ltd.,Jinan 250102,China)

机构地区：[1]山东高速基础设施建设有限公司,山东济南255000 [2]山东高速岚临高速公路有限公司,山东临沂276713 [3]济南市政工程设计研究院,山东济南250002 [4]山东高速岩土科技有限公司,山东济南255192

出　　处：《山西建筑》2022年第23期114-116,128,共4页Shanxi Architecture

摘　　要：应用正交试验的方法,采用常见的石膏粉、石英砂与水三种基本原材料并掺加适量减水剂,研究了软弱岩层相似材料的配合比。选择4个影响水平、3个影响因素,开展正交试验测定了所配置石膏砂浆材料的密度与无侧限抗压强度,分析了石膏砂浆材料在集料粗细比、砂膏比与水灰比因素下的敏感性。基于试验结果推荐了密度为1.653 g/cm^(3)~2.155 g/cm^(3)、抗压强度为0.19 MPa~2.29 MPa范围内软弱风化岩层相似材料的配合比,可为类似模型试验相似材料的设计提供有价值的借鉴。Using the method of orthogonal test,using three common basic raw materials,gypsum powder,quartz sand and wa-ter,and adding an appropriate amount of water reducing agent,the mixing ratio of similar materials in soft rock formations was studied.Four influence levels and three influencing factors were selected,and orthogonal tests were carried out to measure the density and unconfined compressive strength of the gypsum mortar material.Sensitivity under the ratio factor.Based on the test results,the mix ratio of similar materials in soft weathered rock formations with a density of 1.653 g/cm^(3)~2.155 g/cm^(3) and a compressive strength of 0.19 MPa~2.29 MPa is recommended,which can provide valuable reference for the design of similar materials in similar model tests.

关 键 词：相似材料 配合比 石膏砂浆 正交试验 

分 类 号：TU528.044[建筑科学—建筑技术科学]