Cement-base dual-liquid slip-casting material

Abstract

The invention relates to a kind of pair-slurry affusing material prepared with cement as basic raw material. It is comprised of two kinds of dry powdery mixed materials A and B of affusing slurry pair-liquid formed after adding water. Their weight percents are respectively: mixed material A: sulfur aluminate cement 30% - 98.1%, retarder citric acid 0.1% - 0.5%, flocculant polyacrylamide 0% - 0.8%, water-reducing agent FDN 0.6% - 1.5% and inorganic padding pulverized coal ash 0% - 69.1%; mixed material B: Portland cement 20% - 88%, land plaster 6% - 15%, flocculant UWN 0% - 0.7%, accelerator lithium carbonate 0.4% - 1.0%, water-reducing agent FDN 0.5% - 1.3%, calcareousness 2.0% - 5.0% and inorganic padding pulverized coal ash 0% - 70.8%.

Description

technical field [0001] The invention relates to a special building material prepared with cement as the basic raw material, which is especially suitable for fast sand fixing, seam repairing, water pressing, leak plugging and other operating occasions. Background technique [0002] The grouting material is to use the means of pressure feeding to inject the grout with a certain gel time into the cracks of the loose soil layer or the water-bearing rock layer. After the grout solidifies, the particles of the consolidated soil or the cracks of the rock layer are filled to make the soil layer (rock layer) The mechanical properties are improved. This method of strengthening the stratum has simple equipment, occupies a small area, does not affect traffic, the depth of reinforcement can be deep or shallow, the construction period is short, the effect is quick, and the noise and vibration are small during construction. It has been widely used in civil engineering, municipal engineeri...

AI Technical Summary

Problems solved by technology

The disadvantage is that the strength of the gel is low, the permeability is poor, and the water glass is not easy to keep. Due to the hydrolysis, the leached matter will affect the environment, and the durability is also poor. Due to the above-mentioned effects, many water blocks will start to leak after one or two years.

Cement slurry materials (including ordinary cement, superfine cement, wet grinding cement, silica fume, etc.) Ordinary cement slurry materials are cheap, widely sourced, non-toxic, non-polluting, and have good durability, but their strength is low and cannot be injected Medium-fine sand layer; ultra-fine cement slurry has high strength and good durability, and can be injected into medium-fine sand layer, but the price is higher