煤矿用无机固化发泡材料的制备

Preparation of coal mine with inorganic curing foaming material

研究了所制备发泡剂与材料干密度的关系,发现发泡剂掺量<1.5%,成型良好;大于该值后,干表观密度显著下降;材料配比中砂、粉煤灰按照0.54,2∶1的比例调试,发现与水泥净浆相比抗压强度有所下降,但是其容重有所增加;早强剂的用量增加,其凝固时间明显缩短,对后期抗压强度影响不大。最后通过实验筛选出干密度分别为800,900,1 000 kg/m3的材料配比进行相关性能测试,测试发现该发泡材料具有前期强度和28 d龄期抗压强度高的特点。

Studied the dry density of material preparation of foaming agent and the relationship between,found that 1.5％ dosage of foaming agent light rain forming good,dry apparent density declined significantly after is greater than the value;Material ratio of medium sand,fly ash according to 0.54,2 ∶ 1 ratio of debugging,found that compared with net slurry and cement compressive strength decreased,but its density increases; Early strength agent dosage increase its solidification time significantly shortened,little effect on late compressive strength.Finally,selected through the experiment dry density 800,900,1 000 kg/m3 ratio of material in performance test,test found that the foam material has high early strength and age 28 d compressive strength characteristics.