A fast-hardening lightweight wallboard

Abstract

The invention discloses a quick hardening type light wallboard. The quick hardening type light wallboard is characterized by comprising the following raw materials in parts by weight: 40-50 parts of coal ash, 15-20 parts of polyphenyl granule, 130-180 parts of sulphate aluminum cement, 2-5 parts of PP fiber, 1-3 parts of cellulose ether, 3-10 parts of attapulgite, 1-3 parts of modified aluminum powder and 55-75 parts of water; the bulk density of the coal ash is 555-700kg / m<3>; the bulk density of the polyphenyl granule is 12-21kg / m<3>; the grain size is 0.5-5mm; the sulphate aluminum cement is low-alkaline quick hardening sulphate aluminum cement and the mark number is 52.5; the length of the PP fiber is 5-10mm; the cellulose ether is hydroxypropyl methyl cellulose and the fineness is 100-200 meshes; and the fineness of attapulgite is 200-300 meshes. A preparing process for the modified aluminum powder comprises the following steps: heating and melting 1-5 parts by mass of polyethylene glycol powder and then quickly stirring; slowly adding 20-30 parts by mass of aluminum powder; drying the mixture; grinding and standing by. The excitant is prepared by mixing sodium silicate, sodium hydroxide, calcium bicarbonate and gypsum at a certain ratio and has the characteristics of light weight and high strength.

Description

technical field [0001] The invention belongs to the technical field of building materials, in particular to a fast-hardening lightweight wallboard. Background technique [0002] In order to meet the different needs of the construction market, wall panels such as thermal insulation wall panels, sound insulation wall panels, exterior wall panels, and decorative wall panels have appeared on the market. The country and localities and relevant departments have clearly stipulated that wallboard should be listed as a new type of wall material that is mainly supported for development. The location of the wallboard is different, and its raw material composition and production process requirements are also different. Multiple varieties and serialization are the needs of the development of the situation. [0003] At present, the wallboard materials on the market are mainly silicate, which has the disadvantages of long setting time, low early strength, and heavy weight, which cannot me...

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Problems solved by technology

[0003] At present, the wallboard materials on the market are mainly silicate, which has the disadvantages of long setting time, low early strength, and heavy weight, which does not meet people's needs for lightweight wallboards.

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