粉土颗粒分析试验影响因素分析  

Influencing Factor Analysis of Silt Particle Analysis Tests

作　　者：刘猛 许晨曦 孟凡会 高静静 白赟 宋琳琳 LIU Meng;XU Chenxi;MENG Fanhui;GAO Jingjing;BAI Yun;SONG Linlin(Shandong Survey and Design Institute of Water Conservancy Co.,Ltd.,Jinan 250013,Shandong,China;Zhaoyuan Jindu Survey and Design Institute of Water Conservancy Co.,Ltd.,Yantai 265400,Shandong,China)

机构地区：[1]山东省水利勘测设计院有限公司,山东济南250013 [2]招远市金都水利勘测设计有限公司,山东烟台265400

出　　处：《济南大学学报（自然科学版）》2023年第4期493-498,共6页Journal of University of Jinan(Science and Technology)

基　　金：山东省自然科学基金项目(SZR1932)。

摘　　要：为了解决现行规范中对粉土颗粒分析试验误差产生的原因无明确规定的问题,从而提高颗粒分析试验的精度,更好地指导工程实践,采用控制变量法分别对比研究密度计种类,温度,分散剂种类、浓度等因素对粉土黏粒含量分析结果的影响。结果表明:实际测量温度校正值与理论温度校正值存在差距,需要在同一环境中增加空白温度校正;使用六偏磷酸钠作为分散剂比使用氨水作为分散剂的分散效果更好;不同密度计对环境的敏感度不同,在进行试验时,应根据环境条件合理选择密度计。To solve the problem of no clear regulations on causes of errors in silt particle analysis tests in current specifications,so as to improve accuracy of particle analysis tests and better guide engineering practice,influences of factors including densitometer type,temperature,as well as dispersant type and concentration on clay content results of silt was comparatively researched by using control variable method.The results show that there is difference between the measured temperature correction value and the theoretical temperature correction value,and it is necessary to add blank temperature correction in the same environment.Dispersion effect of using sodium hexametaphosphate as a dispersant is better than that of using ammonia as a disp ersant.Different densitometers have different sensitivities to the environment,so densitomete rs should be selected reasonably according to environmental conditions during the test.

关 键 词：粉土 颗粒分析 黏粒含量 控制变量法 分散剂 

分 类 号：TU41[建筑科学—岩土工程]