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Self-foaming lightweight concrete and preparation method

A lightweight concrete and self-foaming technology, applied in the field of building materials, can solve the problems of being unsuitable for small-scale production, complex operation process, high cost, etc., and achieve the effects of wide application range, low cost and easy operation.

Inactive Publication Date: 2018-10-19
洛阳彤润信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional production method uses special foaming equipment or hot water foaming, the operation process is complicated, the demoulding time is more than 24 hours, and the curing time takes 7 days, which is expensive and not suitable for small-scale production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] The invention discloses a self-foaming lightweight concrete and a preparation method thereof. The foaming lightweight concrete is composed of the following components: 250kg of cement, 30kg of fly ash, 3kg of sodium superphosphate, 0.8kg of sodium perborate, 0.8kg of magnesium sulfate, hydrogen Magnesium oxide 1kg, nano-titanium dioxide 1kg, calcium stearate 2kg, nano-calcium carbonate 0.4kg, PVA fiber 0.4kg.

[0012] The preparation method adopted comprises the following steps:

[0013] Step1. Mixing: Take sodium superphosphate, sodium perborate, magnesium sulfate, magnesium hydroxide, nano-titanium dioxide, calcium stearate, nano-calcium carbonate, PVA fiber and mix evenly, add 35 times the amount of water, and rotate at 1000 rpm Stir lightly for 30 seconds with a hand agitator, add cement and fly ash and continue stirring for 60 seconds to make mixture A;

[0014] Step2. Foaming: Pour the mixture A into the mold and smooth it out, let it stand for 60 minutes to comp...

Embodiment 2

[0018] Foamed lightweight concrete consists of the following components: cement 300kg, fly ash 60kg, sodium superphosphate 6kg, sodium perborate 1.5kg, magnesium sulfate 1.5kg, magnesium hydroxide 3kg, nano titanium dioxide 3kg, calcium stearate 4kg, nano Calcium carbonate 0.7kg, PVA fiber 0.7kg.

[0019] The preparation method adopted comprises the following steps:

[0020] Step1. Mixing: Take sodium superphosphate, sodium perborate, magnesium sulfate, magnesium hydroxide, nano-titanium dioxide, calcium stearate, nano-calcium carbonate, PVA fiber and mix evenly, add 35 times the amount of water, and rotate at 2000 rpm Stir lightly for 120 seconds with a hand agitator, add cement and fly ash and continue stirring for 180 seconds to make mixture A;

[0021] Step2. Foaming: Pour the mixture A into the mold and smooth it out, let it stand for 60 minutes to complete the foaming process;

[0022] Step3. Demoulding: After standing for 13 hours, it can be demoulded;

[0023] Step4...

Embodiment 3

[0025] Preferably, the foamed lightweight concrete is composed of the following components: 260kg of cement, 40kg of fly ash, 4kg of sodium superphosphate, 1kg of sodium perborate, 1kg of magnesium sulfate, 2kg of magnesium hydroxide, 2kg of nano-titanium dioxide, and 2.5kg of calcium stearate , nano calcium carbonate 0.5kg, PVA fiber 0.5kg.

[0026] The preparation method adopted comprises the following steps:

[0027] Step1. Mixing: Take sodium superphosphate, sodium perborate, magnesium sulfate, magnesium hydroxide, nano-titanium dioxide, calcium stearate, nano-calcium carbonate, PVA fiber and mix evenly, add 35 times the amount of water, and rotate at 1500 rpm Stir lightly for 60 seconds with a hand agitator, add cement and fly ash and continue stirring for 120 seconds to make mixture A;

[0028] Step2. Foaming: Pour the mixture A into the mold and smooth it out, let it stand for 60 minutes to complete the foaming process;

[0029] Step3. Demoulding: After standing for 1...

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PUM

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Abstract

The invention relates to self-foaming lightweight concrete and a preparation method. The self-foaming lightweight concrete is prepared from the following raw materials: cement, pulverized fuel ash, sodium perphosphate, sodium perborate, magnesium sulfate, magnesium hydroxide, nanometer titania, calcium stearate, nano calcium carbonate, and PVA fiber through the processes of mixing, foaming, demolding and molding. A large foaming machine is not needed, and the preparation process can be finished by just manpower, the operation is simple, the cost is low, the foaming process is controllable, thefoaming time is short, the self-foaming lightweight concrete is suitable for small-scale production and self use, the strength is increased by 20% or more under the same volume density, and the application range is wide and comprises self-insulation concrete blocks, lightweight partition boards, bathroom backfill, homogenous boards, cast-in-place walls, carbon fiber silicon fireproof insulation boards, and foam cement insulation boards and the like.

Description

technical field [0001] The invention belongs to the field of building materials, and relates to a self-foaming lightweight concrete and a preparation method thereof. Background technique [0002] Lightweight concrete, also known as foam concrete, is to fully foam the foaming agent mechanically through the foaming system of the foaming machine, and mix the foam and cement slurry evenly, and then carry out cast-in-place construction through the pumping system of the foaming machine Or mold forming, a new type of lightweight thermal insulation material containing a large number of closed pores formed by natural curing. It belongs to the bubble-like thermal insulation material, and its outstanding feature is that it forms closed foam pores inside the concrete, which makes the concrete lightweight and thermally insulated. The traditional production method uses special foaming equipment or hot water foaming. The operation process is complicated, the demoulding time is more than 2...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B111/40
CPCC04B28/00C04B2111/40C04B18/08C04B22/16C04B22/0013C04B22/142C04B22/066C04B14/305C04B24/045C04B22/10C04B16/0641
Inventor 罗章
Owner 洛阳彤润信息科技有限公司
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