Method for solving black floating of concrete slurry

The invention discloses a method for solving the black floating of concrete slurry. Preferably, methyl hydroxypropyl cellulose with a molecular weight of 100,000 is selected, and the cellulose accounts for 0.008%-0.015% of the mass of a cementing material; the stable load bearing pressure of a pressure bleeding instrument is set at 2.0MPa, and the stable load bearing time is 180S; when the slump expansion degree of the concrete mixture is adjusted to 520-600mm, the pressure bleeding rate of concrete detected by a concrete pressure bleeding instrument is not more than 2.6%, and a thickening agent can solve the problem of black floating of concrete slurry. By solving the problem of black floating of concrete slurry, the method provided by the invention ensures stable performance of a mixtureand the appearance quality of a structure. 本发明公开了一种解决混凝土浆体浮黑的方法，优选10万分子量的甲基羟丙基纤维素，纤维素占胶凝材料的质量百分比范围为：0.008％～0.015％；压力泌水仪设置稳定持荷压力为2.0MPa、稳定持荷时间为180S；当混凝土拌合物坍落扩展度调整至520～600mm，使用混凝土压力泌水仪检测混凝土的压力泌水率不大于2.6％时，增稠剂可以解决混凝土浆体浮黑问题。本发明通过