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Aerated concrete block and preparation method thereof

A technology of aerated concrete and blocks, which is applied in the field of building materials, can solve the problems of complex preparation process, poor product pore structure, and difficult quantitative production, and achieve low thermal conductivity, uniform and dense pores, and reduce self-weight.

Inactive Publication Date: 2014-04-30
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] CN102167619B Low thermal conductivity aerated concrete and its preparation method, using a variety of silicate substrates and composite gas-generating components to prepare products, the raw materials are various and the preparation process is relatively complicated, and the required cost is much higher than that of the present invention , it is difficult to quantify the production
CN102701659A A kind of B02 grade lightweight sand aerated concrete fireproof board, which uses large amount of quartz sand and lime as raw materials in the production process, and the cost price is higher than that of the present invention; it selects aluminum powder as the gas-generating material, and is suitable for low For air-entrained concrete with bulk density, the product pore structure is poor and production is difficult to control

Method used

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  • Aerated concrete block and preparation method thereof
  • Aerated concrete block and preparation method thereof
  • Aerated concrete block and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] An air-entrained concrete block, comprising the following components by weight: 24.7% shale ash, 29.7% mineral powder, 44.6% cement, 0.99% gypsum, 0.11% foam stabilizer, 0.3% air-conditioning agent, 5.0% hydrogen peroxide, and 0.62% water to material ratio;

[0034] 1. the preparation method of foam stabilizer, comprises the following steps:

[0035] Mix 1 part by weight of oleic acid with 2-4 parts by weight of triethanolamine, then dilute with water to a solution with a mass concentration of 30-50%, and add 3-5% cellulose in the diluted solution to the diluted solution by mass percentage ether and mix well.

[0036] 2. The preparation method of air-entrained concrete block, comprises the following steps:

[0037] 1) Pretreatment of raw materials: the above raw materials are mixed and stirred evenly according to the proportion, the fineness of shale ash is 6-30%, and the sieve is 45um, the mineral powder is dried, and the cement is 45.2R composite Portland cement;

...

Embodiment 2

[0044] An aerated concrete block, comprising the following components in parts by weight: shale ash 49.5, mineral powder 14.9, cement 34.7, gypsum 0.99, foam stabilizer 0.11, air-conditioning agent 0.3, hydrogen peroxide 4.0, water-material ratio 0.60; preparation method With embodiment 1.

[0045] Product performance: absolute dry density 286 / kg / m 3 , compressive strength 1.01 / MPa, specific strength 3.46×10 -3 ·N·M / Kg, thermal conductivity 0.0853 / W / (m·k).

Embodiment 3

[0047] An air-entrained concrete block, comprising the following components in parts by weight: 39.5% shale ash, 26.3% mineral powder, 21.9% cement, 10.5% waste block, 1.8% gypsum, 0.11% foam stabilizer, 0.3% air-regulating agent, 3.5% hydrogen peroxide, water material Ratio 0.61; The preparation method is the same as in Example 1, wherein the waste block fineness is 5-20%, and the 45um sieve remains.

[0048] Product performance: absolute dry density 329kg / m 3 , compressive strength 1.33 / MPa, specific strength 4.04×10 -3 ·N·M / Kg, thermal conductivity 0.1013 / W / (m·k).

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Abstract

The invention belongs to the technical field of building materials and particularly relates to an aerated concrete block and a preparation method thereof. The technical scheme is as follows: the aerated concrete block comprises the following components in parts by weight: 20-50 parts of cement, 20-55 parts of shale ash, 10-40 parts of mineral powder, 0.08-0.12 part of foam stabilizer, 0.5-3 parts of natural gypsum and 3-7 parts of hydrogen peroxide, wherein the ratio of water to material is 0.58-0.65. The heat self-preservation aerated concrete block prepared by the invention has the low volume weight of 200-500kg / m<3>, the heat conductivity coefficient of 0.06-0.12W / m.k and the compensative strength of 0.8-3MPa, and various indexes such as fire resistance, freezing resistance and the like of the aerated concrete block can be up to the national traditional autoclaved aerated concrete standard.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to an aerated concrete block and a preparation method thereof. Background technique [0002] Energy depletion and economic development are important issues facing the world today. With the tense energy situation and the rapid growth of building energy consumption, building energy conservation is becoming increasingly important. In recent years, with the strong support of national policies and relevant government departments, especially the introduction of the policy of banning the use of solid clay red bricks in 170 large and medium-sized cities across the country in 2003, the new wall materials are energy-saving, soil-saving, waste-use, environmentally friendly and functional. Sex is the direction of development and has been developing rapidly. With the development of new wall materials, the energy-saving technology in the production process of new varietie...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B38/02C04B22/06
Inventor 刘福田张波张德成赵德利张宇张明玖盖祥云
Owner UNIV OF JINAN
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