High-performance heat-preservation plastering mortar prepared from industrial solid waste and preparation method thereof

Abstract

The invention discloses high-performance heat-preservation plastering mortar prepared from industrial solid waste and a preparation method thereof. The high-performance heat-preservation plastering mortar is composed of the components: the industrial solid waste, cement, natural sand, expanded perlite, anti-cracking fibers, dispersed sol, cellulose ether and an additive, wherein the industrial solid waste is any kinds of molybdenum tailing sand, steel slag sand, phosphogypsum, red mud, mineral slag and fly ash; the dispersed sol component comprises diatomite, an ethylene-vinyl acetate copolymer, methyl methacrylate, a titanate coupling agent and cumene hydroperoxide; the cellulose ether is hydroxypropyl methyl cellulose ether; and the additive is water glass, starch ether and a polycarboxylic acid high-efficiency water reducing agent. The prepared plastering mortar is suitable for an external heat-preservation system of an expanded polystyrene board external wall. According to the invention, a large amount of industrial solid waste harmful to the environment can be consumed, the self-repairing pressure of the environment is reduced, and the prepared mortar has good mechanical properties, durability and thermal insulation capability.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a high-performance thermal insulation plastering mortar prepared by utilizing industrial solid waste and a preparation method of the high-performance thermal insulation plastering mortar. Background technique [0002] Building plastering mortar is divided into ordinary plastering mortar and special plastering mortar, among which ordinary plastering mortar is the most used plastering mortar in construction engineering. Weathering properties, enhance the durability of wall materials, and at the same time keep the building walls flat, clean and beautiful; special plastering mortars include waterproof plastering mortars, thermal insulation plastering mortars, heat-insulating plastering mortars, and corrosion-resistant plastering mortars. Among them, the thermal insulation plastering mortar is a mortar made of cement, lime, fly ash, gypsum and other cementitious...

AI Technical Summary

Problems solved by technology

Ordinary thermal insulation plastering mortar has low cohesive force and large shrinkage rate, which leads to difficulty in construction, and the elastic modulus of ordinary thermal insulation plastering mortar is large, which is prone to cracking during use, and the mechanical properties and durability of mortar are greatly affected. influences

[0004] Aiming at the problems of low bonding force, large shrinkage rate and easy cracking of ordinary thermal insulation plastering mortar, the methods currently adopted mainly include: (1) Adding binder to the mortar, in the patent "An Environmentally Friendly Crack-resistant High Weather-resistant External Thermal Thermal Plastering Mortar" and its preparation method" (application number: CN201910423952.7), Gao Fei et al. added styrene resin, styrene-butadiene copolymer and epoxy resin to the mortar to effectively improve the mortar It improves the physical structure of the cement hydration product in the mortar, relieves the internal stress, and reduces the occurrence of mortar cracks. However, the organic binder is easily decomposed when it encounters high temperature, thus losing its effect. Mortar It is still easy to produce a large number of cracks; (2) adding fibers to the mortar, in the patent "An Anti-cracking Insulation Plastering Mortar" (application number: CN201810372764.1), Huang Mingming et al. added modified fibers to the mortar The method of strengthening the bonding force between the various substances in the mortar and inhibiting the cracking inside the mortar, but because the fibers are difficult to disperse evenly in the mortar, and when the breaking strength of the fibers is reached, the mortar will still crack; (3) in the mortar Adding micro-expansion substances, in the patent "A Lightweight Plastering Gypsum Mortar and Its Preparation Method" (Application No.: CN201910455437.7), Zhu Peiqiang et al. added desulfurized gypsum or natural gypsum to the mortar to make the mortar have a Micro-expansion, which effectively solves the cracking caused by the large drying shrinkage of the mortar, but the addition of gypsum will cause the increase of calcium hydroxide in the mortar, which will adversely affect the mechanical properties of the mortar

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