Inert wall post-grouting material with good freeze-thaw resistance and preparation method of inert wall post-grouting material

The invention discloses an inert wall post-grouting material with good freeze-thaw resistance. The inert wall post-grouting material is composed of the following raw materials by weight: 6.5-8% of molten iron desulphurization slag ultrafine powder; 0.3%-0.4% of a water reducing agent; 3.5%-5% of a modified alkali activator; 45%-49% of river sand; 20%-23% of water; 0.1%-0.2% of modified polypropylene fiber; 0.3%-0.4% of an alkaline functional complexing agent; 14%-16% of nano silicon dioxide modified superfine slag powder; 3%-4% of fly ash; 1%-2% of silica fume; the total content of the raw materials is 100%. The inert wall post-grouting material is good in freeze-thaw resistance, short in setting time and good in compressive strength. 本发明公开了一种抗冻融性能好的惰性壁后注浆材料，由以下重量含量的原料组成：铁水脱硫渣超细粉6.5％～8％；减水剂0.3％～0.4％；改性碱性激发剂3.5％～5％；河砂45％～49％；水20％～23％；改性聚丙烯纤维0.1％～0.2％；碱性功能复合剂0.3％～0.4％；纳米二氧化硅改性矿渣微粉14％～16％；粉煤灰3％～4％；硅灰1％～2％；上述原料总含量为100％。该惰性壁后注浆材料抗冻融性能好，凝结时间短、抗压强度好。