Aluminate and Portland cement-based double-liquid grouting material and preparation method thereof: Fid-Bau Portal

Aluminate and Portland cement-based double-liquid grouting material and preparation method thereof

CHEN QING / HAN SHULING / YU SHOUDONG / ZHU QINGQING

The invention belongs to the technical field of building construction, and particularly relates to an aluminate and Portland cement-based double-liquid grouting material and a preparation method thereof. The double-liquid grouting material is composed of a slurry A and a slurry B which are equal in volume, wherein the slurry A is composed of aluminate cement, a composite admixture I and water; and the slurry B is composed of Portland cement, a compound admixture II and water. According to the aluminate and Portland cement-based double-liquid grouting material, the aluminate cement and the Portland cement are matched to serve as a cementing material, the characteristic of early strength of the aluminate cement is fully utilized, and the effect of rapid hardening and rapid hardening is achieved under the action of the additive; meanwhile, the storage time of a single liquid is not less than 2 hours, the flowability of the slurry is good, the flowability of the slurry can reach 300 mm, the initial setting time of the mixed double-liquid grouting material can be adjusted and shortened to be within 2 minutes, the final setting time can be adjusted and shortened to be within 5 minutes, and the compressive strength within 2 hours can reach 6 MPa according to engineering requirements.

本发明属于建筑施工技术领域，具体涉及一种铝酸盐和硅酸盐水泥基双液注浆材料及其制备方法。本发明的双液注浆材料由A料浆和B料浆等体积组成；其中：A料浆由铝酸盐水泥、复合外加剂一与水组成；B料浆由硅酸盐水泥、复合外加剂二与水组成。本发明的铝酸盐和硅酸盐水泥基双液注浆材料，将铝酸盐水泥和硅酸盐水泥配合作为胶凝材料，充分利用铝酸盐水泥早强的特点，在外加剂作用下达到速凝快硬的效果；同时，单液存放时间不小于2h、浆液流动性好，其浆液流动度可达300mm，混合后的双液注浆材料可根据工程需要，初凝时间可调整缩短至2min以内，终凝时间可调整缩短至5min以内，2h抗压强度可达到6MPa。

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