Novel autoclaved fly ash self-insulation wall material and production process

Abstract

The invention discloses a novel autoclaved fly ash self-insulation wall material and a production process. The wall material is produced by adding water into raw materials, mixing, pouring, forming gas, standing, hardening, cutting and autoclaved curing. The wall material is characterized by comprising the following raw materials in percentage by weight: 7 to 10 percent of cement, 15 to 25 percent of lime, 2 to 4 percent of gypsum, 45 to 55 percent of fly ash, 8 to 25 percent of lightweight silicon dioxide micro powder, 0.1 to 0.25 percent of gas forming agent, 0.1 to 0.4 percent of foam stabilizer and 0.8 to 1.5 percent of admixture; the pouring temperature is between 30 and 45 DEG C, and the water temperature is controlled to be between 34 and 50 DEG C; and during steam curing, steam is injected to perform curing for 10 to 15 hours, the temperature in a kettle is kept between 160 and 180 DEG C, and the pressure in the kettle reaches 0.8 to 1.4MPa. The heat conductivity factor of the wall material can reach below 0.9W / (mk), and the compressive strength of the wall material is remarkably improved compared with a B04-grade building block. The wall material can well utilize the fly ash, utilize wastes, save energy, be in accordance with national energy-saving policy and meet national standard for 65 percent energy efficiency, and is an ideal novel energy-saving wall material.

Description

Technical field: [0001] The invention relates to a building material, in particular to a novel autoclaved fly ash self-insulating wall material and a production process. Background technique: [0002] At present, with the increasing shortage of energy, the global trend of energy conservation and emission reduction has taken shape. Governments of various countries have introduced policies and measures for energy conservation and emission reduction, and actively encouraged the implementation of new energy and new material projects. All parts of our country have generally implemented the building energy-saving standard of 50% energy saving, and some areas have implemented the 65% energy-saving standard. standard. These put forward higher requirements for my country's building energy conservation. In recent years, new buildings have generally adopted structural measures for external wall insulation, and EPS boards have been used as external wall insulation materials. However,...

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Problems solved by technology

[0004] In order to overcome the shortcomings of poor fireproof performance and durability of the external thermal insulation wall of the external wall, the purpose of the present invention is to provide a new type of self-insulation wall material with light bulk density, good seismic performance, and remarkable thermal insulation effect; the present invention Another object is to provide a production process of a new type of self-insulating wall material with simple preparation process, low energy consumption, convenient construction, reduced engineering cost, and significant economic benefits. Coal ash, achieve waste utilization, save energy