Construction technology of cast-in-place lightweight foam concrete

A foamed concrete and lightweight foam technology, which is applied in the field of construction engineering, can solve problems such as foam concrete bedding and cracks, and achieve the effect of stabilizing bubbles and reducing labor input.

Active Publication Date: 2016-04-27
CHINA METALLURGICAL CONSTR ENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a construction technology of cast-in-place lightweight foam concrete that does not lie down and has no cracks when pouring foam concrete in order to solve the phenomenon that foam concrete is stuck and cracked.

Method used

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  • Construction technology of cast-in-place lightweight foam concrete
  • Construction technology of cast-in-place lightweight foam concrete
  • Construction technology of cast-in-place lightweight foam concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Preparation of cement slurry solution: Add 435 kg of cement, 78.3 kg of fly ash, and 174 kg of water to the mixing bucket I of the hydraulic foaming machine and stir for 0.7 min. The weight ratio of the above cement, fly ash, and water is 1:0.18:0.4 .

[0055] Preparation of foaming agent aqueous solution: Add 0.9 kg of foaming agent and 58.5 kg of water to the mixing bucket II of the foaming hydraulic machine and stir for 4 minutes. The weight percentage of the above foaming agent and water is 1:65. After stirring, the foam density is 35kg / m 3 .

[0056] Preparation of foamed concrete: Put the foaming agent aqueous solution into the cement slurry solution and stir for 2 minutes, the weight percentage of the foaming agent aqueous solution and the cement slurry solution is: 1:13.8.

Embodiment 2

[0058] Preparation of cement slurry solution: Add 525 kg of cement, 105 kg of fly ash, and 262.5 kg of water to the mixing bucket I of the hydraulic foaming machine and stir for 0.5 min. The weight ratio of the above cement, fly ash and water is 1:0.2:0.5.

[0059] Preparation of foaming agent aqueous solution: add 1.1 kg of foaming agent and 74.8 kg of water into the mixing bucket II of the foaming hydraulic machine and stir for 5 minutes. The weight percentage of the foaming agent and water is 1:68. After stirring, the foam density is 60kg / m 3 .

[0060] Preparation of foamed concrete: put the foaming agent aqueous solution into the cement slurry solution and stir for 1.5 min, the weight percentage of the foaming agent aqueous solution and the cement slurry solution is: 1:12.

Embodiment 3

[0062] Preparation of cement slurry solution: add 600 kg of cement, 130 kg of fly ash, and 390 kg of water to the mixing bucket I of the hydraulic foaming machine and stir for 0.8 min. The weight ratio of the above cement, fly ash and water is 1:0.22:0.65.

[0063] Preparation of foaming agent aqueous solution: Add 1.2 kg of foaming agent and 84 kg of water to the mixing bucket II of the foaming hydraulic machine and stir for 3 minutes. The weight percentage of the above foaming agent and water is 1:70. After stirring, the foam density is 75kg / m 3 .

[0064] Preparation of foamed concrete: Put the above-mentioned foaming agent aqueous solution into the cement slurry solution and stir for 1.5 minutes. The weight percentage of the foaming agent aqueous solution and the cement slurry solution is: 1:13.

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Abstract

The invention discloses a cast-in-place light-weight foamed concrete construction technique. The technique comprises the following steps: earlier stage preparation; cement mortar solution preparation: mixing cement and fly ash in a mixing hopper; foaming agent water solution preparation: weighing a foaming agent, adding the foaming agent and water into a mixing hopper of a hydraulic foaming machine, uniformly mixing to form the foaming agent water solution; foamed concrete preparation: gradually adding the foaming agent water solution prepared in the step 2 into the cement mortar solution by a conveyer belt, mixing for 1-3 minutes to form the foamed concrete; discharging the mortar and delivering the foamed concrete; casting the foamed concrete; and curing. The foamed concrete can not easily collapse in the in-place casting process, and has the advantages of high construction speed and low construction cost.

Description

technical field [0001] The invention relates to the field of building construction engineering, in particular to the construction technology of cast-in-place lightweight foam concrete. Background technique [0002] Foam concrete wall is a new type of thermal insulation material, which is widely used in the construction industry because of its remarkable thermal insulation effect, physical properties, low temperature and low cost. [0003] At present, the construction method of the foam concrete wall is that in the original cavity material, the aerated concrete wall is prone to cracks. During the pouring process, due to the weak structure of some bubbles, lack of toughness, and easy rupture, the air escapes after the bubbles burst. If it falls, the slurry lacks the collective support of the air bubbles and causes it to stay. In addition, when preparing the cement slurry solution, the amount of cement and fly ash should not be controlled, and the quality will deviate, which w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/10C04B28/00
Inventor 熊伟何俨程国富冯毅
Owner CHINA METALLURGICAL CONSTR ENG GRP
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