Steam-cured high-performance foam concrete block, production method and application thereof

A foamed concrete, high-performance technology, applied in the field of lightweight and energy-saving building wall materials, can solve the problems of low strength, easy pulverization, large shrinkage, etc., and achieve the effects of improving waterproof performance, simple production process, and reducing weight

Active Publication Date: 2014-01-08
罗云峰 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the defects of traditional ordinary foam concrete blocks such as easy pulverization, low strength and large shrinkage, the primary purpose of the present invention is to provide a steam-cured high-performance foam concrete block

Method used

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  • Steam-cured high-performance foam concrete block, production method and application thereof
  • Steam-cured high-performance foam concrete block, production method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A steam-cured high-performance foam concrete block is prepared by the following steps:

[0038] 1) Weigh 1kg of Henan Huatai HTQ-1 composite foaming agent, add it to the foaming machine, and add 40kg of tap water to fully foam with compressed air;

[0039] 2) At the same time, weigh out 510kg of cement (P.O42.5R; the same below), 75kg of S95 slag powder, 45kg of sand, and non-slow aggregation carboxylic acid superplasticizer (Guangdong Yuehe HPG-R type; the same below) 6.3kg, Add 190kg of water to the mixer and mix and stir. Stir slowly for 0.5min, then quickly stir for about 1.5min, then add 8kg of curing agent (5.6kg of sodium chloride, 2.4kg of calcium hydroxide), and then stir quickly for 2min to make the slurry uniform;

[0040] 3) The foam that has been foamed in step 1) is blown into the uniformly stirred slurry through compressed air and mixed with the slurry, and then stirred slowly for about 1.5 minutes to make the slurry become a uniform high-performance foamed conc...

Embodiment 2

[0044] A steam-cured high-performance foam concrete block is prepared by the following steps:

[0045] 1) Weigh 0.8kg of Henan Huatai HTQ-1 composite foaming agent, add it to the foaming machine, and add 35kg of tap water to fully foam with compressed air;

[0046] 2) At the same time, weigh 582kg of cement, 86kg of S95 slag powder, 51kg of sand, 7.3kg of non-slow coagulation carboxylic acid superplasticizer, and 220kg of water, and add them to the mixer to mix and stir. Stir slowly for 0.5min, then quickly stir for about 1.5min. Then add 9kg of curing agent (6.3kg of sodium chloride, 2.7kg of calcium hydroxide), and then quickly stir for 2min to make the slurry uniform;

[0047] The remaining steps are the same as steps 3)-5) of Example 1. The dry density of the steam-cured high-performance foam concrete block is 800kg / m 3 .

Embodiment 3

[0049] A steam-cured high-performance foam concrete block is prepared by the following steps:

[0050] 1) Weigh 0.7kg of Henan Huatai HTQ-1 composite foaming agent, add it to the foaming machine, and add 30kg of tap water to fully foam with compressed air;

[0051] 2) At the same time, weigh 655kg of cement, 96kg of S95 slag powder, 58kg of sand, 8.3kg of non-slow coagulation carboxylic acid superplasticizer, and 250kg of water, and add them to the mixer to mix and stir. Stir slowly for 0.5min, then quickly stir for about 1.5min. Then add 10.0kg of curing agent (7.0kg of sodium chloride, 3.0kg of calcium hydroxide), and then quickly stir for 2min to make the slurry uniform;

[0052] The remaining steps are the same as steps 3)-5) of Example 1. The dry density of the steam-cured high-performance foam concrete block is 900kg / m 3 .

[0053] With reference to the requirements of "Foam Concrete Blocks" (JC / T1062-2007), the specific performance indicators of the steam-cured high-performanc...

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Abstract

The invention discloses a steam-cured high-performance foam concrete block which comprises 55-60% of cement, 7-9% of slag powder, 5-8% of sand, 0.5-1.0% of a water reducing agent, 0.88-3% of a curing agent, 0.06-0.3% of a foaming agent and 24-26% of water, wherein the mass of the slag powder is less than 20% of that of the cement which is P.O42.5R cement. According to the foam concrete block, the curing agent is used, so that structural pulverization, collapse of dies and the like are avoided, and the steam-curing effect is improved; water-proof, heat preservation and thermal insulation effects of products are good, and building energy saving is facilitated; the products have good durability and the same service life with a main construction; and the problems of low strength, pulverization, large shrinkage, collapse of dies and the like of low-density foam concrete are solved.

Description

Technical field [0001] The invention belongs to the field of light-weight energy-saving building wall materials, and specifically relates to a steam-cured high-performance foam concrete block and a production method and application thereof. Background technique [0002] Traditional ordinary foam concrete blocks generally have defects such as low strength, large shrinkage, and structure pulverization. The main reasons are: (1) The cement grade used in traditional ordinary foam concrete blocks is low, generally 32.5, which makes Its strength is low, and its shrinkage is also large; (2) Traditional ordinary foam concrete blocks generally do not use superplasticizers, which makes their water consumption and water glue relatively large, resulting in low strength; (3) Traditional Ordinary foam concrete blocks have low requirements for the quality of the admixtures used. For example, fly ash generally requires a three-level or lower ash total. The activity of the admixture is low, and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00
Inventor 罗云峰王劲松肖涛
Owner 罗云峰
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