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Waste-utilizing foam concrete and preparation process thereof

A technology of foam concrete and foaming agent, which is applied in the field of building materials, can solve the problems of groundwater resource pollution, large land occupation, etc., and achieve the effects of saving energy and resources, reducing CO2 emissions, and reducing the amount of mixing

Active Publication Date: 2013-04-03
SHANGHAI MCC ENVIRONMENTAL ENG TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no effective way to use it, and it can only be simply landfilled, which not only requires a large amount of land, but also easily causes greater pollution to the surrounding environment and groundwater resources.

Method used

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  • Waste-utilizing foam concrete and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (a) Design density is 500kg / m 3 The total amount of dry material in each cubic foam concrete is 417kg, including 50wt% cement, 10wt% metallurgical iron-free dust, 28wt% fly ash, 8wt% quicklime, 2wt% gypsum, and 1.2wt% water reducer , 0.8wt% early strength agent, mix cement, metallurgical iron-free dust, fly ash, quicklime, and gypsum, and stir evenly for 2-3 minutes;

[0043] (b) Weigh water according to the water-cement ratio of 0.40, take a small amount of water to dilute 1.14kg of foaming agent (corresponding to 1m 3 Foam concrete, dilute 20-30 times with water); then add the remaining water, water reducer, and early strength agent to the dry material obtained in step a, and stir evenly for 2-3 minutes;

[0044] (c) Foam the foaming agent obtained in step b using a cement foaming machine, then blow it into the pre-mixed cement slurry, and stir evenly for 3-4 minutes;

[0045] (d) Import the prepared slurry into the trough, and send it into the mold with a delivery ...

Embodiment 2

[0048] (a) For foam concrete with a design density of 800kg / m3, the total amount of dry material per cubic foam concrete is 667kg, of which 50wt% cement, 10wt% metallurgical iron-free dust, 28wt% fly ash, 8wt% quicklime, 2wt% % gypsum, 1.2wt% water reducer, 0.8wt% early strength agent, mix cement, metallurgical iron-free dust, fly ash, quicklime, and gypsum, and stir evenly for 2-3 minutes;

[0049] (b) Weigh water according to the water-cement ratio of 0.40, take a small amount of water to dilute 0.87kg foaming agent (corresponding to 1m 3 Foam concrete, dilute 20-30 times with water); then add the remaining water, water reducer, and early strength agent to the dry material obtained in step a, and stir evenly for 2-3 minutes;

[0050] (c) Foam the foaming agent obtained in step b using a cement foaming machine, then blow it into the pre-mixed cement slurry, and stir evenly for 3-4 minutes;

[0051] (d) Import the prepared slurry into the trough, and send it into the mold wit...

Embodiment 3

[0054] (a) For foam concrete with a design bulk density of 500kg / m3, the total amount of dry material per cubic foam concrete is 417kg, of which 50wt% cement, 20wt% metallurgical iron-free dust, 20wt% fly ash, 6wt% quicklime, 2wt% % gypsum, 1.2wt% water reducer, 0.8wt% early strength agent, mix cement, metallurgical iron-free dust, fly ash, quicklime, and gypsum, and stir evenly for 2-3 minutes;

[0055] (b) Weigh water according to the water-cement ratio of 0.40, take a small amount of water to dilute 1.14kg of foaming agent (corresponding to 1m 3 Foam concrete, dilute 20-30 times with water); then add the remaining water, water reducer, and early strength agent to the dry material obtained in step a, and stir evenly for 2-3 minutes;

[0056] (c) Foam the foaming agent obtained in step b using a cement foaming machine, then blow it into the pre-mixed cement slurry, and stir evenly for 3-4 minutes;

[0057] (d) Import the prepared slurry into the trough, and send it into the ...

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Abstract

The invention relates to the field of building materials, and in particular to waste-utilizing foam concrete and a preparation process thereof. The waste-utilizing foam concrete comprises dry materials, water and a foaming agent, wherein the dry materials comprise the following components in parts by weight: 21-50wt% of cement, 10-30wt% of metallurgical dust mud without iron, 20-30wt% of coal ash, 5-10wt% of quick lime, 2-5wt% of gypsum, 0.5-2.0wt% of water reducing agent, and 0.5-2.0wt% of early strength agent; the weight ratio of the dry materials to the water is 1:(0.38-0.50); and the weight ratio of the dry materials to the foaming agent is 1:(0.0008-0.006). According to the invention, by means of utilizing industrial solid wastes as raw materials, the industrial solid wastes are reutilized, so that wastes are turned into wealth. In addition, the amount of blended cement is further reduced, energy and sources which are in shortage day by day are saved, CO2 emission is reduced, and the ecological environment is protected.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a waste-recycling foam concrete and a preparation process thereof. Background technique [0002] Foamed concrete is to fully foam the foaming agent mechanically through the foaming system of the foaming machine, and evenly mix the foam with the cement slurry, and then go through the pumping system of the foaming machine for cast-in-place construction or mold molding. A new lightweight material containing a large number of closed pores formed by curing. [0003] The invention relates to a kind of waste-recycling foam concrete, which uses metallurgical industrial waste such as iron dust and fly ash as raw materials, belongs to the reuse of industrial solid waste, and is applicable to the fields of heat preservation, sound insulation and fireproof materials. [0004] Metallurgical non-iron dust and sludge are iron-free ash, slag, and mud in steel mills. In a broad sense, it is als...

Claims

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Application Information

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IPC IPC(8): C04B38/02C04B28/14
Inventor 韩甲兴武传金刘国威金强
Owner SHANGHAI MCC ENVIRONMENTAL ENG TECH CO LTD
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