Anti-bleeding grouting material for splitting compaction grouting and preparation method of anti-bleeding grouting material

The invention belongs to the technical field of underground engineering grouting reinforcement materials, and relates to an anti-bleeding grouting material for splitting compaction grouting and a preparation method of the anti-bleeding grouting material. The anti-bleeding concrete comprises the following components in parts by weight: 500 parts of Portland cement, 300-1000 parts of water, 1-20 parts of a polycarboxylic acid water reducing agent, 1-50 parts of fumed silica and 1-30 parts of the anti-bleeding polymer. The anti-bleeding grouting material for splitting compaction grouting provided by the invention has the properties of low percolation property, low bleeding rate, high slurry coagulation strength and the like, and is beneficial to realizing a splitting compaction grouting reinforcement effect. 本发明属于地下工程注浆加固材料技术领域，涉及一种用于劈裂挤密注浆的防泌水注浆材料及其制备方法。按照重量份数计，包括以下组分：硅酸盐水泥500份，水300～1000份，聚羧酸减水剂1～20份，气相二氧化硅1～50份，所述防泌水聚合物1～30份。本发明提供的用于劈裂挤密注浆的防泌水注浆材料具有渗滤性低、泌水率低、浆液凝结强度高等性能，有利于实现劈裂挤密注浆加固效果。