Porous aerated concrete building block and preparation method thereof

An air-entrained concrete and block technology, applied in the field of building materials, can solve the problems of large drying shrinkage value, single material source, poor thermal insulation, etc., and achieve high compressive strength, increased hydrophobicity, sound insulation and thermal insulation effects. improved effect

Active Publication Date: 2013-10-02
TONGLING FENGZE BUILDING MATERIALS TECH
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AI Technical Summary

Problems solved by technology

[0002] As a new type of wall material, air-entrained concrete is a low-energy, environmentally-friendly new building material, which belongs to the building materials promoted by the state. However, because ordinary air-entrained concrete is made of cement, fly ash, quic

Method used

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Example Embodiment

[0012] A porous aerated concrete block, which is characterized by being made of the following parts by weight (kg) of raw materials: cement 16, quicklime 25, gypsum 12, aluminum powder 0.45, sodium dodecylbenzene sulfonate 1, kaolin 12, Barite powder 5, river sand 40, dibutyl phthalate 5, polyethylene glycol 3, sodium persulfate 2, oil foot 7, chlorinated paraffin 2, phenyl triethoxy silane 2, partial silicon Sodium 5.

[0013] The preparation method of porous aerated concrete block is characterized by comprising the following steps:

[0014] (1) Add kaolin, barite powder, river sand, sodium metasilicate with appropriate amount of water, heat to 60-70℃, stir for 15-20 minutes, add oil feet, sodium dodecylbenzene sulfonate, phenyl Triethoxysilane, stir for 15-25 minutes, then add sodium persulfate, stir for 20-35 minutes, add polyethylene glycol, stir for 10-30 minutes, and stir to form a mud;

[0015] (2) Add cement and river sand to 40-50℃ hot water and mix for 20-35 minutes, then...

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Abstract

A porous aerated concrete building block is characterized by comprising following raw materials in parts by weight: 16 to 20 parts of cement, 20 to 25 parts of quicklime, 12 to 16 parts of gypsum, 0.45 to 0.65 part of aluminum powder, 1 to 2 parts of sodium dodecyl benzene sulfonate, 12 to 15 parts of kaolin earth, 5 to 8 parts of barite powder, 40 to 50 parts of river sands, 3 to 5 parts of dibutyl phthalate, 3 to 5 parts of polyethylene glycol, 2 to 3 parts of sodium persulfate, 4 to 7 parts of oil foot, 2 to 4 parts of chlorinated paraffin, 2 to 3 parts of phenyltriethoxysilane, and 5 to 10 parts of sodium metasilicate. In the preparation method, the aluminum powder and the surfactant commonly foam, therefore the numbers and sizes of air-holes are increased, the weight of building blocks is reduced, and the sound insulation and heat insulation effects are prominently improved.

Description

technical field [0001] The invention belongs to a building material technology, in particular to a concrete block and a preparation method thereof. Background technique [0002] As a new type of wall material, air-entrained concrete is a low-energy, environmentally-friendly new building material, which belongs to the building materials promoted by the state. However, because ordinary air-entrained concrete is made of cement, fly ash, quicklime, gypsum, etc. Large shrinkage value, low strength, water seepage, no corrosion resistance, poor heat insulation, single source of material, etc. Therefore, further research on aerated concrete block technology is urgently needed to further meet market requirements. Contents of the invention [0003] The object of the present invention is to provide a porous aerated concrete block and a preparation method thereof. By increasing the amount of aluminum powder and increasing the foaming of a surfactant, pores are increased and the weight...

Claims

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Application Information

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IPC IPC(8): C04B28/14C04B41/64
CPCC04B28/18
Inventor 梅林
Owner TONGLING FENGZE BUILDING MATERIALS TECH
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