Energy-saving and environment-friendly straw brick and preparation method thereof

Abstract

An energy-saving and environment-friendly straw brick consists of components including, by weight, from 60 to 70 parts of straw powder or / and saw dust, from 30 to 40 parts of magnesium oxide and from 10 to 20 parts of magnesium chloride. The preparation method includes steps of uniformly stirring and mixing the straw powder or / and saw dust and the magnesium oxide with the proportioning quantities so as to obtain mixture; preparing the magnesium chloride with the proportioning quantity into brine with the mass percent concentration of 20-30%; adding the brine into the mixture; continuing stirring and mixing to obtain a sizing agent; and forming, demolding and naturally drying the sizing agent to obtain a finished product. The energy-saving and environment-friendly straw brick is lighter than a clay brick by 20%, and is firmer than the clay brick. After the energy-saving and environment-friendly straw brick soaks in water for 48 hours, the water cannot permeate into the brick, and accordingly the energy-saving and environment-friendly straw brick not only is high in water seepage resistance, but also is fine in heat insulation, sound insulation and antifreezing effects.

Description

1. Technical field [0001] The invention relates to a building material, in particular to an energy-saving and environment-friendly straw brick and a preparation method thereof. 2. Background technology [0002] At present, building bricks include clay fired bricks and non-fired bricks made of lime sand or fly ash. Clay sintered bricks use clay (including shale, coal gangue and other powders) as the main raw material, and are processed, shaped, dried and roasted through mud, which wastes land resources and is time-consuming and labor-intensive to make, especially the sintering time is long and the production efficiency is low. , It is also prone to waste bricks such as underfire or overfire. Non-fired bricks made of lime sand or fly ash have the disadvantages of water seepage, heavy weight, poor thermal insulation and sound insulation effects, weak antifreeze ability, cumbersome production process and not environmentally friendly. 3. Contents of the invention [0003] The...

AI Technical Summary

Problems solved by technology

Clay sintered bricks use clay (including shale, coal gangue and other powder materials) as the main raw material, and are processed, shaped, dried and roasted by mud, which wastes land resources and is time-consuming and labor-intensive to make, especially the sintering time is long and the production efficiency is low. , It is also prone to waste bricks such as underfire or overfire

Non-fired bricks made of lime sand or fly ash have the disadvantages of water seepage, heavy weight, poor thermal insulation and sound insulation effects, weak antifreeze ability, cumbersome production process and not environmentally friendly.