Sulphoaluminate-base high-strength grouting concrete and preparation method thereof

A technology of sulphoaluminate and grouting material, which is applied in the field of concrete, can solve the problems of unfavorable resistance, settlement, and low flexural strength, and achieve the goals of inhibiting later strength shrinkage, stabilizing micro-expansion performance, and saving energy costs Effect

Active Publication Date: 2014-08-20
广西云燕特种水泥建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, commercial concrete plays a great role in the process of infrastructure construction, but it is far from meeting the requirements of these fine, fine and small parts.
Mainly manifested in the disadvantages of small flow, long setting time, large shrinkage, and poor filling effect, while the grouting material using ordinary cement as the cementitious material has a long setting time and is prone to settlement
Ordinary grouting materials generally focus on compressive strength, while the flexural strength is low, resulting in a high crush ratio, which is not conducive to the improvement of resistance performance
The technical requirements for use cannot be met under the condition of non-stop or limited-time production, so the market is looking forward to self-leveling and high-strength grouting materials with high hourly strength and long-term stable performance.

Method used

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  • Sulphoaluminate-base high-strength grouting concrete and preparation method thereof
  • Sulphoaluminate-base high-strength grouting concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Anhydrite, limestone, and sulfur-aluminum clinker are crushed separately, passed through a 60-mesh sieve, and 15kg of anhydrite powder passed through a 60-mesh sieve, 10kg of limestone, and 70kg of sulfur-aluminum clinker are added to the grinder and ground until the specific surface area is 450cm 2 / g, stop grinding, transfer to a homogenizer, homogenize for 15 minutes, transfer to a high-speed mixer, add 100kg of aggregate (quartz sand), 0.4kg of plasticizer (polycarboxylate superplasticizer), Anti-settling agent 0.07kg (cellulose ether), defoamer 0.1kg (non-ionic surfactant, nonylphenol polyoxyethylene ether) and coagulation regulator (boric acid) 0.3kg, mix well to obtain sulfoaluminate base High-strength grouting material.

[0049] Table 1 is the performance test result of embodiment 1 gained product:

[0050] Table 1:

[0051]

Embodiment 2

[0053] Anhydrite, limestone, and sulfur-aluminum clinker are crushed separately, passed through a 60-mesh sieve, and 15.3kg of anhydrite powder passed through a 60-mesh sieve, 10.3kg of limestone, and 71.4kg of sulfur-aluminum clinker are added to the grinder and ground until the specific surface area is 450cm2 / g, stop grinding, transfer to a homogenizer, homogenize for 15 minutes, transfer to a high-speed mixer, add 96kg of aggregate (quartz sand and gravel mixed at 1:1), plasticizer 0.5kg (polycarboxylic acid Salt superplasticizer), anti-settling agent 0.08kg (cellulose ether), defoamer (octylphenol polyoxyethylene ether) 0.14kg and coagulation regulator (citric acid) 0.36kg, mix evenly to obtain sulfoaluminic acid Salt-based high-strength grouting material.

[0054] Table 2 is the performance test result of the product obtained in embodiment 2:

[0055] Table 2:

[0056]

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Abstract

The invention provides a sulfoaluminate-based high-strength grouting material, which is characterized in that it consists of the following raw materials in parts by weight: powder masterbatch 45-55, aggregate 45-55, plasticizer 0.1-0.5, Anti-sedimentation agent 0.02-0.06, defoamer 0.03-0.1, coagulation regulator 0-0.2, through the action of composite admixture, high-strength aggregate, polymer and other materials, the grouting material can be used under a certain water-cement ratio. To achieve good fluidity of the slurry, it can completely fill the entire filling space under its own weight, and automatically eliminate the air bubbles inside and on the surface of the slurry during the construction process, and improve the compactness and impermeability of the slurry after hardening. Through the action of high molecular polymer, the strength of the slurry can be adjusted to the required strength. Under the joint action of the optimally graded aggregates, the flexural strength can be significantly improved, the modulus of elasticity can be reduced, and the shock resistance of the hardened slurry can be improved. for excellent.

Description

technical field [0001] The invention relates to concrete, especially a sulphoaluminate-based high-strength grouting material and a preparation method thereof. Background technique [0002] At present, commercial concrete plays a great role in the process of infrastructure construction, but it is far from meeting the requirements of these fine, thin and small parts. It is mainly manifested in the disadvantages of small flow, long setting time, large shrinkage, and poor filling effect, while the grouting material using ordinary cement as the cementitious material has a long setting time and is prone to settlement. Ordinary grouting materials generally focus on compressive strength, while the flexural strength is low, resulting in a high crush ratio, which is not conducive to the improvement of resistance performance. The technical requirements for use cannot be met under the condition of non-stop or limited-time production. Therefore, the market is looking forward to self-lev...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/06
Inventor 黄芳杨毅龙志谋许建兴
Owner 广西云燕特种水泥建材有限公司
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