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设计12组混凝土,其中,基准混凝土1组;陶泥取代水泥的混凝土4组,粉煤灰取代水泥的混凝土4组,取代量分别为10%,20%,30%,40%;陶泥和粉煤灰共同取代水泥的混凝土3组,取代量分别为10%(陶泥)+20%(粉煤灰),20%(陶泥)+10%(粉煤灰),20%(陶泥)+20%(粉煤灰)。进行混凝土拌和物和易性试验。试验结果表明,陶泥降低了混凝土拌和物的流动性,随着陶泥取代水泥用量的增加,混凝土拌和物坍落度呈下降趋势;相同取代量时,陶泥混凝土拌和物坍落度低于粉煤灰混凝土拌和物坍落度;陶泥取代水泥量10%时混凝土拌和物坍落度满足设计要求;随着陶泥掺量的增加,混凝土拌和物的黏聚性和保水性明显增强;可采用复掺粉煤灰的方法改善陶泥混凝土拌和物的和易性。
Design 12 groups of concrete, of which 1 group of benchmark concrete; 4 groups of cement instead of cement concrete, fly ash instead of concrete 4 groups, the replacement of 10%, 20%, 30%, 40%; clay and Fly ash together to replace the cement concrete three groups, the replacement of 10% (clay) + 20% (fly ash), 20% (clay) + 10% (fly ash), 20% ) + 20% (fly ash). Conduct concrete mixability test. The results show that the mud reduces the fluidity of the concrete mix. With the increase of the amount of cement instead of clay, the slump of the concrete mix shows a downward trend. When the same amount of substitution, the slump of the concrete mix is lower than The slump of fly ash concrete mixture; the slump of concrete mixture when ceramic clay replaces 10% of cement meets the design requirements; with the increase of clay content, the cohesiveness and water retention of concrete admixture increase obviously; Can be mixed with fly ash method to improve the workability of clay concrete mix.