硅酸盐通报2017，Vol.36Issue(6)：1823-1829,1840,8.
废弃输油管道充填用可控低强度材料性能研究
Properties of Controlled Low-Strength Materials Using in Waste Oil Pipeline
摘要
Abstract
Using fly ash as the main raw material with a certain amount of cement, polycarboxylate super plasticizer and the admixture such as slump retaining agent and thickening agent, a type of controlled low-strength materials (CLSM) is developed that can be used to fill the discarded oil pipeline.For optimization of the mix proportioning of the filling material, the orthogonal experiment was adopted, and the range analysis, variance analysis and comprehensive statistical analysis of acquired results were performed.Mathematical statistical variation coefficient method was used to entrust with the weight to the flow of the filling material performance, bleeding rate and the intensity of three parameters, adopting efficacy function method to uniform the parameters for the dimensionless indicators, to evaluate the performance of materials according to the calculated indexes.When mix proportions were optimized, optimal comprehensive strength at 28 d was nearly 2.60 MPa, while 4 h fluidity and 4 h bleeding rate were 250 mm and 4.2%, which sufficiently meets the performance requirements of pipeline-filling material.The results show that comprehensive statistical analysis can be used to evaluate the comprehensive performance of the filling material accurately and intuitively as a new route to the design and choice of CLSM mix proportions.关键词
可控低强度材料/粉煤灰/外加剂/配合比优化/正交试验Key words
controlled low-strength material/fly ash/admixture/mix optimization/orthogonal experiment分类
能源科技引用本文复制引用
张雪松,俞然刚,陈金平,杨文东..废弃输油管道充填用可控低强度材料性能研究[J].硅酸盐通报,2017,36(6):1823-1829,1840,8.基金项目
国家自然科学基金(51309238) （51309238）
中国石化管道储运分公司2014年抢维修中心项目(2014QWX003) （2014QWX003）
中央高校基本科研业务费专项资金资助项目(13CX06075A) （13CX06075A）
