此水泥浆可由于提高自身沉降稳定性而提高水泥石粘附性能及强度,减小收缩率.含波特兰水泥44.15-50.4987%(重)、氮川甲基磷酸0.005-0.02%、膨胀蛭石2.725-5.825%、石棉0.882-3.500%,其余为水.配制方法是先将氮川甲基磷酸水溶液与石棉和膨胀蛭石混合,再向制得的悬浮液中加波特兰水 The cement slurry can improve the self-settling stability and improve the adhesion performance and strength of the cement stone and reduce the shrinkage rate, including Portland cement 44.15-50.4987% by weight, nitrilotrophosphoric acid 0.005-0.02%, expanded leeches 2.725-5.825% of rock, 0.882-3.500% of asbestos, and the rest is water. The preparation method comprises the following steps: mixing nitrilotrophosphoric acid aqueous solution with asbestos and expanded vermiculite; adding Portland water to the prepared suspension;