A fast-hardening consolidation grouting material for complex formations and its preparation method

Abstract

The invention discloses a quick curing type consolidation grouting material for complex ground and a preparation method and belongs to the technical field of a construction material. The method comprises the following steps: a) mixing 20-40 weight parts of bauxite with 10-20 weight parts of natural anhydrite, 30-50 weight parts of lime and 2-10 weight parts of mineral admixtures, thereby acquiring a material A; b) mixing 35-50 weight parts of natural dihydrate gypsum, 30-45 weight parts of lime, 5-15 weight parts of thickening agents and 2-7 weight parts of high efficiency slushing agents, thereby acquiring a material B; c) mixing the material A with the material B and water at the ratio of 1:0.4:1, and stirring uniformly to obtain the grouting material. The grouting material provided by the invention has the characteristics of high water content, quick curing and coagulating property, excellent liquidity of slurry, high strength of the grouted part, capability of coordinating and unifying for high liquidity of the slurry and high strength of the grouted part and benefit in onsite long-distance pumping and high pressure grouting construction.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a grouting material suitable for rapid consolidation grouting and filling in complex stratum grouting engineering and a preparation method. Background technique [0002] For complex formations that have experienced unloading and cracking, weathering relaxation, and freeze-thaw ice splitting, the poured ordinary cement slurry has major problems such as unsatisfactory setting time, low slurry utilization rate, large leakage, serious loss, and low strength of slurry stones. defect problem. In order to ensure sufficient time for mixing, conveying and pouring during the grouting construction process, the initial setting time of the grout should not be too short. After the grouting is finished, it is required that the grout can be hardened as soon as possible, and the strength should not be too low, and the final setting time should not be too long. [0003] At present, si...

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Problems solved by technology

[0006] The inorganic solidified grouting material disclosed in this patent document, although the slurry made by adding water has a low viscosity and good fluidity, but the setting time is long under the condition of high water-cement ratio, and the consolidation strength of the slurry is low, so it needs to be added on site. Additives and admixtures are used to improve the consolidation strength of the grout, which greatly increases the complexity of the grouting operation process

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