Preparation technology for wet-ground modified cement-based rigid self-waterproof material

Abstract

The invention relates to a preparation technology for a wet-ground modified cement-based rigid self-waterproof material. According to the preparation technology, the self-waterproof material is prepared by mixing the following raw materials: 50-60 parts of wet-ground modified silicon-aluminum solid waste waterproof slurry, 30-50 parts of Portland cement, 100-300 parts of inert filler, 20-30 partsof active filler and 15-45 parts of water, wherein the wet-ground modified silicon-aluminum solid waste waterproof slurry is prepared through a method which comprises the following steps that 1) 100 parts of silicon-aluminum solid waste powder, 1-8 parts of alkali, 0.1-0.4 part of polycarboxylic acid dispersant and 40-50 parts of water are subjected to wet grinding so as to obtain the silicon-aluminum solid waste slurry after grinding, and 2) 1-10 parts of surface modifier is added into the silicon-aluminum solid waste slurry obtained in the step 1), and wet grinding is carried out until the median particle size is 300 nm<-1> microns so as to obtain the wet-ground modified silicon-aluminum solid waste waterproof slurry. The preparation technology has the advantages of being simple, low incost, free of pollution and harm, good in durability, excellent in mechanical property and good in impermeability.

Description

technical field [0001] The invention relates to a cement-based waterproof material, in particular to a preparation process of a wet-milled modified cement-based rigid self-waterproof material. Background technique [0002] Concrete structures are in the natural environment, and their service life, durability, and safety in use are largely related to the waterproof performance of building materials. Some structures such as subways, pipe galleries, tunnels, etc., on the one hand, due to the osmotic corrosion of environmental water with erosive media, they need to be repaired and maintained soon after they are put into use, and even cause durable damage; Improper setting, a large number of projects have problems such as long-term leakage and undercurrent erosion, which makes engineering disasters such as settlement, subsidence and water inrush occur from time to time. [0003] At present, the most commonly used building waterproof materials at home and abroad are mainly asphal...

AI Technical Summary

Problems solved by technology

However, in order to ensure a better waterproof effect, the amount of polymer is generally higher, which increases the cost on the one hand, and has a greater impact on the performance (such as strength) of cement-based materials on the other hand.

At the same time, polymer cement-based waterproof materials also have disadvantages such as potential toxic substances and irritating odors.

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