Large-dosage solid waste-based alkali-activated foam concrete and preparation method thereof

Abstract

The invention belongs to the field of prefabricated building material lightweight prefabricated parts, and particularly relates to a preparation method of a large-dosage solid waste-based alkali-activated foam concrete prefabricated part, which comprises 80-240 parts of solid waste-based aggregate, 60-80 parts of solid waste-based micro powder, 5-30 parts of mineral admixture, 15-30 parts of alkali activator, 5-15 parts of water, 2-8 parts of composite foaming agent, 1-8 parts of admixture, and 0.5-3 parts of fiber; the composite foaming agent comprises 4-7 parts of a foaming agent, 2-4 parts of a water repellent and 0.03-0.06 part of a foam stabilizing component. The large-dosage solid waste-based alkali-activated foam concrete prefabricated part is good in heat insulation performance, low in cost, low in water absorption rate and ideal in temperature resistance and fire resistance, has mechanical property indexes higher than those of common foam concrete components, has the characteristics of early strength and rapid hardening, and can effectively solve the problems of later-stage pulverization, strength shrinkage and the like of the surface of a plate.

Description

Technical field [0001] The present invention belongs to the field of lightweight prefabricated components of assembly building materials, and more particularly to a method for preparing a large dosing solid waste base excited foam concrete prefabricated member. Background technique [0002] The prefabricated components have high efficiency energy saving, green environmental, reducing costs, and provide many advantages such as functionality and performance. In recent years, the new concept of building industrialization, energy conservation and emission reduction, quality and safety, ecological environmental protection has brought a development opportunity, and a large number of infrastructure construction in the urbanization process, and the large-scale affordable housing needs standardization, rapid construction. Quality buildings, more prefabricated components provide a broad space. However, in today's low-carbon policy orientation, the advantages of traditional concrete prefabr...

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Problems solved by technology

[0006] The present invention aims to overcome the deficiencies of the prior art and provide a thermal insulation performance, low cost, low water absorption, ideal temperature and fire resistance, The mechanical performance index is higher than that of ordinary foam concrete components, and it has the characteristics of early strength and rapid hardening. It can effectively solve the problems of late pulverization of the plate surface and strength shrinkage. A large amount of solid waste base-activated foam concrete precast component and its preparation method