Preparation process of a wet-milled modified cement-based rigid self-waterproof material

Abstract

The invention relates to a preparation process of a wet-milled modified cement-based rigid self-waterproof material. The technical scheme is to prepare the following raw materials by mixing: 50-60 parts of wet-milled modified silicon-aluminum solid waste waterproof slurry, silicic acid 30-50 parts of salt cement, 100-300 parts of inert filler, 20-30 parts of active filler, and 15-45 parts of water; wherein, the wet-milled modified silicon-aluminum solid waste waterproof slurry is obtained by the following method: 1) mixing 100 parts of silicon-aluminum solid waste powder, 1-8 parts of alkali, 0.1-0.4 parts of polycarboxylic acid dispersant, and 40-50 parts of water are wet-milled to obtain a silicon-aluminum solid waste slurry; 2) to step 1) Add 1-10 parts of surface modifier to the obtained silicon-aluminum solid waste slurry for wet grinding until the median particle size is 300nm-1 μm, to obtain wet-milled modified silicon-aluminum solid waste waterproof slurry. The invention has the advantages of simple process, low cost, no pollution hazard, excellent durability, superior mechanical properties and good 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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