Lightweight waterproof high-strength foam concrete and preparation method thereof

A foam concrete, high-strength technology, applied in the field of concrete, can solve the problems of large drying shrinkage, different sizes of closed pores, uneven distribution, etc.

Pending Publication Date: 2021-07-02
武汉来道建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is an important problem in conventional foamed concrete. The closed pores are of different sizes, uneven distribution, large drying shrinkage, excessive local stress and easy fracture, resulting in low material strength, so that it has not been used as a load-bearing component in construction. project

Method used

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  • Lightweight waterproof high-strength foam concrete and preparation method thereof
  • Lightweight waterproof high-strength foam concrete and preparation method thereof
  • Lightweight waterproof high-strength foam concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] see figure 1 , figure 1 The pore distribution of the lightweight waterproof high-strength foam concrete section prepared for Example 1 of the present invention.

[0053] Table 1 Embodiment 1 batching list (weight ratio)

[0054]

[0055]

[0056] (1) Add the animal protein foaming agent and water into the foaming machine according to the volume ratio (1:30) to produce foam with a bulk density of 0.05g / cm 3 .

[0057] (2) Weigh the gel material, fine aggregate, cement waterproof emulsion, polypropylene fiber, and polycarboxylate superplasticizer into the mixer in proportion, add 80% water and stir for 3 minutes, and stir to form a slurry , the expansion degree is 180 mm, after adding the hydroxymethyl cellulose ether and stirring for 1 min, add the remaining 20% ​​of water, and then stir for 2 min, the weight ratio of the total weight of the gel material to water is 5:1.

[0058] (3) Add the foam prepared in (1) into the mixer according to a certain amount and ...

Embodiment 2

[0064] Embodiment 2 compares with embodiment 1, and difference is: the kind of cement used is different, becomes sulfoaluminate cement by portland cement, and in total component, proportion rises, rises to 39% by 16%; The composition of the aggregate is different, from finely ground fly ash and volume stabilizer to mineral powder and volume stabilizer, the proportion in the total component decreases from 24% to 21%; the type of fine aggregate is different, from 40% -70 mesh quartz sand becomes 70-200 mesh quartz powder, and the proportion in the total component decreases from 59.15% to 35.85%; the proportion of cement waterproof emulsion in the total component increases from 0.1% to 0.3%; the type of reinforcing fiber Different, from polypropylene fiber to polyethanol fiber, the proportion of the total component increases from 0.5% to 2%; the proportion of the water reducing agent in the total component increases from 0.1% to 0.7%; the proportion of the foaming agent The types...

Embodiment 3

[0077] Embodiment 3 compares with embodiment 1, and difference is: the kind of cement used is different, becomes phosphate cement by Portland cement, and in total component, proportion rises, rises to 22.5% by 16%; Blending The material components are different, from pulverized fly ash and volume stabilizer to kaolin and volume stabilizer, and the proportion in the total component increases from 24% to 27.5%; the type of fine aggregate is different, from 40-70% Mesh quartz sand becomes a mixture of 40-70 mesh quartz sand and 70-200 mesh quartz powder, and the proportion in the total component decreases from 59.15% to 38.6%; the proportion of cement waterproof emulsion in the total component increases from 0.1% to 0.2%; the type of reinforcing fiber is different, from polypropylene fiber to polyethylene fiber, the proportion in the total component increases from 0.5% to 1.2%; the proportion of water reducing agent in the total component increases from 0.1% to 0.4%; the proporti...

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Abstract

The invention provides lightweight waterproof high-strength foam concrete and a preparation method thereof. The lightweight waterproof high-strength foam concrete is prepared from the following components in percentage by weight: 40 to 60 percent of gel material, 35.85 to 59.15 percent of fine aggregate, 0.1 to 0.3 percent of reinforced emulsion, 0.5 to 2.0 percent of reinforced fiber, 0.1 to 0.7 percent of water reducing agent, 0.05 to 0.35 percent of foaming agent and 0.1 to 0.8 percent of foam stabilizer. According to the lightweight waterproof high-strength foam concrete provided by the invention, the foam which is small in size, uniform and densely distributed is formed, so that the distribution of a concrete material is more uniform, the stress is more uniform correspondingly, the risk of material fracture caused by overlarge local stress is reduced, and the strength of the material is improved.

Description

technical field [0001] The application of the present invention relates to the field of concrete, in particular to a lightweight waterproof high-strength concrete and a preparation method thereof. Background technique [0002] Foamed concrete is a light-weight thermal insulation material with a large number of closed pores formed by fully foaming with a foaming agent by mechanical means, uniformly mixing foam and cement, and curing. It is widely used in wall insulation, lightweight panels and toilet backfill, etc. However, there is an important problem in conventional foamed concrete. The closed pores are of different sizes, uneven distribution, large drying shrinkage, excessive local stress and easy fracture, resulting in low material strength, so that it has not been used as a load-bearing component in construction. project. [0003] Therefore, it is necessary to provide a closed air cell with small volume, uniform and dense distribution, so that the foamed concrete has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B28/34C04B28/06C04B38/10C04B111/40C04B111/27
CPCC04B28/04C04B28/34C04B28/06C04B2111/40C04B2111/27C04B18/08C04B2103/0068C04B14/06C04B2103/65C04B16/0633C04B2103/302C04B24/14C04B24/383C04B38/10C04B18/12C04B16/0641C04B24/42C04B14/106C04B16/0625
Inventor 兰普添徐智勇胡亮潘佩
Owner 武汉来道建材科技有限公司
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