Self-repairing geopolymer-based permeable crystallization waterproof material and preparation method thereof

Abstract

The invention discloses a self-repairing geopolymer-based permeable crystallization waterproof material and a preparation method thereof. The self-repairing geopolymer-based permeable crystallization waterproof material is prepared from the following components in parts by weight: 20 to 50 parts of metakaolin, 10 to 30 parts of ground superfine slag powder, 5 to 8 parts of fly ash, 3 to 5 parts of fused silica powder, 20 to 30 parts of an alkaline activator, 2 to 5 parts of a surface modifier, 2 to 10 parts of a silane impregnant, 2 to 3 parts of a penetrant, 0.5 to 2 parts of a water reducing agent, 5 to 15 parts of an expanding agent, 0.1 to 1 part of a retarder and 0.1 to 0.5 part of an early strength agent. The self-repairing geopolymer-based permeable crystallization waterproof material provided by the invention not only has relatively high compressive strength, but also has relatively good toughness, durability and good self-healing performance; and when a waterproof layer or a repaired crack is damaged, the alkali excitation reaction and the active substance are activated again when encountering water and are condensed into a compact crystal, so that a self-repairing effect is achieved.

Description

technical field [0001] The invention relates to a geopolymer waterproof material and a preparation method thereof, in particular to a self-repairing geopolymer-based permeable crystal waterproof material and a preparation method thereof. Background technique [0002] In bridges, tunnels, and road projects, most of the diseases are related to water erosion. Water erosion is slow and long-lasting. Under the influence of water, temperature, humidity and other factors, structures will gradually produce Tiny cracks that are difficult to find, therefore, waterproofing is an urgent task during the construction, maintenance and repair of structures. Traditional waterproof materials often use asphalt, rubber, cement, etc. The former two have problems such as water channeling, delamination, bulging, and poor durability. Cement-based waterproof materials have poor toughness after film formation, and will settle and dislocate with structures Affect the waterproof effect; and asphalt, r...

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Problems solved by technology

Traditional waterproof materials often use asphalt, rubber, cement, etc. The former two have problems such as water channeling, delamination, bulging, and poor durability. Cement-based waterproof materials have poor toughness after film formation, and will settle and dislocate with structures Affect the waterproof effect; and asphalt, rubber, and cement waterproof materials have high energy consumption, which will generate a large amount of greenhouse gases during the production process and seriously pollute the environment; they have high strength, good toughness, good durability, compact structure, and self-repairing Strong waterproof material is the future development trend

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