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在对目前井下胶结充填材料充分研究的基础上,通过添加复合外加剂(缓凝剂与速凝剂),研制得到一种水的体积分数可达97%的新型超高水材料.该材料主要由A,B这2种物料构成,其中A料以硫铝酸盐水泥与复合缓凝剂为主,B料由石膏、石灰及复合速凝剂组成.材料的突出特点是在水固质量比(下简称水固比)高达11:1的情况下可凝固,终凝强度可达0.66MPa.且材料凝结时间与抗压强度可按需通过外加剂及水固比进行调整,A,B单料浆体可持续30～40h不固化,混合后浆体可快速凝固.材料具有单浆体缓凝、混合浆体速凝、早期强度高的特点,且固结体不收缩,尤其适用于矿井采空区充填.
Based on the full research on the present cementitious filling materials, a new ultrahigh water material with a water volume fraction of 97% was obtained by adding composite admixture (retarder and quick setting agent) .The material mainly A, B, which consists of two kinds of materials, of which A material to the main sulphoaluminate cement and composite retarder, B material from the gypsum, lime and quick-setting compound composition of the salient features of the material in the water-solid mass ratio (Hereinafter referred to as water to solid ratio) up to 11: 1 case can be solidified, the ultimate strength of up to 0.66MPa. And the material setting time and compressive strength can be adjusted by admixture and water-solid ratio, A, B single The slurry can be solidified for 30-40h, the slurry can be rapidly solidified after mixing, the material has the characteristics of single slurry retarding, rapid solidification of mixed slurry and high early strength, and the consolidation does not shrink, especially for mines Gob fill.