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Powder mortar composite for bubble lightweight concrete

A technology of lightweight concrete and dry powder mortar, which is applied in the field of special dry powder mortar composition for bubble lightweight concrete, and achieves the effects of stable strength, stable mechanical properties and excellent hydrophobicity in the later stage.

Active Publication Date: 2012-05-23
CHANGSHU YISHENG COMMODITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, many problems of cellular lightweight concrete, such as bonding strength, flexibility, hydrophobicity and unconfined compressive strength, need to be further improved.

Method used

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  • Powder mortar composite for bubble lightweight concrete
  • Powder mortar composite for bubble lightweight concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Ordinary Portland cement (Shanghai Xiang brand (42.5)) 6000 grams, sulfoaluminate cement (Tangshan Liujiu brand (42.5) rapid hardening sulfoaluminate cement) 4000 grams, polyacrylate redispersible latex powder (Shanghai Dongsheng VAP-360) 150 grams, hydroxyethyl cellulose ether (20,000 molecular weight, the brand name of Rongou Chemical Shanghai Co., Ltd. is MK-20000S cellulose ether) 5 grams, tartaric acid 30 grams;

[0021] Preparation method: at 70°C, add ordinary portland cement into a stirring pot, while stirring, add sulphoaluminate cement, polyacrylate redispersible latex powder, hydroxyethyl cellulose ether, tartaric acid in sequence, and stir for 30 Minutes, made into dry powder, then bagged and packaged, and water was added during use, and the added weight of water was 5600 grams.

Embodiment 2

[0023] Ordinary Portland cement (Shanghai Xiang brand (42.5)) 7000 grams, sulfoaluminate cement (Tangshan Liujiu brand (42.5) rapid hardening sulfoaluminate cement) 3000 grams, polyacrylate redispersible latex powder (Shanghai Dongsheng VAP-360) 200 grams, hydroxyethyl cellulose ether (20,000 molecular weight Rongou Chemical Shanghai Co., Ltd. brand is MK-20000S cellulose ether) 7.5 grams, tartaric acid 20 grams, water 5600 grams.

[0024] The preparation method is the same as in Example 1.

Embodiment 3

[0026] Ordinary Portland cement (Shanghai Xiang brand (42.5)) 8000 grams, sulfoaluminate cement (Tangshan Liujiu brand (42.5) rapid hardening sulfoaluminate cement) 2000 grams, polyacrylate redispersible latex powder (Shanghai Dongsheng VAP-360) 300 grams, hydroxyethyl cellulose ether (20,000 molecular weight Rongou Chemical Shanghai Co., Ltd. brand is MK-20000S cellulose ether) 10 grams, tartaric acid 10 grams, water 5600 grams. The preparation method is the same as in Example 1.

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Abstract

The invention provides a powder mortar composite for bubble lightweight concrete and the composite comprises the following components in parts by weight: 60-90 parts of ordinary silicate cement, 20-40 parts of sulphoaluminate cement, 1.5-3.0 parts of polyacrylate re-dispersible emulsion powder, 0.05-0.15 part of cellulose ether and 0.1-0.3 part of tartaric acid. The invention can ensure that the lightweight concrete has uniform density, stable volume weight and good hydrophobic property; in addition, the film of polymer has good flexibility in the lightweight concrete so as to be more applicable to the roadbed filling of tunnels and express highways, thus shortening the construction period and improving the construction efficiency.

Description

technical field [0001] The invention relates to a special dry powder mortar composition for air bubble lightweight concrete. Background technique [0002] With the rapid development of the national economy, the construction of highways, underground tunnels and high-speed railways in our country is also developing vigorously, and it is currently in the forefront of the world. In the great development of highways, underground tunnels and high-speed railway construction, there are still some technical problems to be solved, such as the problem of vehicle jumping at the bridge head in the soft ground section, the slope stability of high-fill embankments, and the maintenance of tunnel engineering with fill and more. [0003] In recent years, cellular lightweight concrete has been paid more and more attention at home and abroad, and has been widely used in road and tunnel construction internationally, and has a very good prospect as a new material. However, many problems of cell...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/36
CPCC04B28/06C04B2111/50C04B40/0608C04B2111/0075C04B2111/27C04B2103/0066C04B2111/00724C04B2111/40
Inventor 施晓旦郭和森王养臣
Owner CHANGSHU YISHENG COMMODITY
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