基于GRA的大理石粉水泥标准稠度用水量影响因素研究

Study on Influencing Factors of Standard Consistency Water Consumption of Marble Powder Cement Based on GRA

为研究大理石产业粉体水泥标准稠度用水量的影响因素,以大理石产业粉体的种类(大理石粉、大理石废粉)、细度(3000目、600目、400目、废粉)及掺量(0、5%、10%、15%、20%、25%)为参数,设计了21组配合比开展试验研究,并采用灰色关联度分析对多种影响因素进行主次分析,研究表明:大理石粉水泥净浆标准稠度用水量随着掺量的增加而减小,当掺量为25%时,对标准稠度用水量影响最大,比纯水泥标准稠度用水量降低4.3~6.2%;随着大理石粉的粒径减小,形成净浆的标准稠度用水量在不断减小;相同掺量条件下,大理石粉与水泥形成的净浆小于大理石废粉的标准稠度用水量;根据关联度的大小关系为r3>r1>r2,得到对各影响因素主次关系:大理石产业粉体种类(非饱和树脂有机物含量)>粒径>掺量;大理石产业粉体在水泥中应用,对水泥的标准稠度用水量(流动性)要根据大理石产业粉体的种类,控制粒径和掺量设计配合比,为大理石产业粉体在水泥中的应用提供参考。

In order to study the factors affecting the water consumption of marble powder cement standard consistency,the parameters of marble powder type(marble powder marble waste powder),fineness(3000mesh/600mesh/400mesh/waste powder)and the amount of mixture(0/5%/10%/15%/20%/25%)were used as parameters.Twenty-one groups of mixture ratio were designed to carry out experimental study,and grey correlation analysis was used to analyze the main and secondary factors.The results showed that the standard consistency water consumption of marble cement paste decreased with the increase of cement content,and when the content was 25%,It has the greatest influence on the standard consistency water consumption,and the ratio of pure water to pure water.The standard consistency water consumption of mud decreases by 4.3%to 6.2%.With the decrease of marble particle size,the standard consistency water consumption for the formation of net slurry decreases continuously.The water consumption of the standard consistency of marble powder and cement is less than that of marble waste powder.According to the correlation degree,the main and secondary relationships of the influencing factors are obtained:the type of powder in marble industry(organic content of unsaturated resin)>the particle size>the content of additive,and the application of marble powder in cement,the relation of the correlation degree is r3>r1>r2.The standard consistency water consumption(fluidity)of cement should be controlled according to the type of marble powder.The mix ratio provides a reference for the application of marble powder in cement.