A special admixture for high-strength concrete and its preparation method
A high-strength concrete and admixture technology, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve problems such as the failure to overcome the reduction of concrete strength, shorten the setting time, protect the later strength, increase the viscosity elastic effect
Active Publication Date: 2022-06-07
成都新豪鼎盛建材有限公司
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Problems solved by technology
[0004] In view of the above-mentioned related technologies, the inventor believes that the existing high-strength composite water reducer is used in shotcrete, although the rebound rate is reduced, but the deficiency of the strength reduction of concrete in the later stage cannot be overcome
Method used
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Examples
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Comparison scheme
Effect test
preparation example 1-6
[0041] The water glass in Preparation Examples 1-6 was selected from Shandong Shengliu Environmental Protection Technology Co., Ltd., with item number SL-1; polyacrylamide was selected from Gongyi Bibo Water Supply Material Co., Ltd., with item number 25 and molecular weight of 1.2 million.
preparation example 1
[0042] Preparation Example 1: Mix 1.1 kg of aluminum sulfate and 1.2 kg of water to prepare an aluminum sulfate solution, add 0.7 kg of aluminum fluoride, 0.15 kg of water glass and 0.5 kg of polyacrylamide, and stir evenly.
preparation example 2
[0043] Preparation Example 2: Mix 1.5 kg of aluminum sulfate and 1.8 kg of water to prepare an aluminum sulfate solution, add 1 kg of aluminum fluoride, 0.3 kg of water glass and 1 kg of polyacrylamide, and stir evenly.
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Abstract
The application relates to the field of concrete admixtures, and specifically discloses a special admixture for high-strength concrete and a preparation method thereof. Special admixture for high-strength concrete, including the following components by weight: 1.8-3.4 parts of coal gangue boiling slag, 2.6-4.2 parts of zeolite powder, 3-7 parts of alkali-free accelerator, 1-3 parts of water reducer, 5- 10 parts of mineral powder, 2.5-5 parts of glass fiber; the preparation method is: mix coal gangue boiling slag, zeolite powder and mineral powder evenly to form a premix; mix water reducer, glass fiber and alkali-free accelerator Evenly, add the premix and mix evenly to make a special admixture for high-strength concrete. The special admixture for high-strength concrete of the application has the advantages of being used in sprayed concrete, which can reduce the rebound rate and dust concentration during concrete spraying, increase the later strength of concrete, and improve the carbonation resistance and durability.
Description
technical field [0001] The present application relates to the technical field of concrete admixtures, and more particularly, to a special admixture for high-strength concrete and a preparation method thereof. Background technique [0002] In mine support, tunnels, dams and other projects, it is necessary to spray concrete to the designated position through the pipeline with the aid of spray machinery, compressed air or other power, and make it solidify and harden in a very short time. The advantages of fast construction speed and strong adaptability of concrete to the site are widely used. The spraying process of concrete is divided into wet spraying process and dry spraying process. The machinery used in the wet spraying process is large and heavy, and it is difficult to move. The machinery used in the dry spraying process is small in size and easy to move. Therefore, the dry spraying method is widely used. The process also has the defects of high dust concentration and hi...
Claims
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IPC IPC(8): C04B24/26
CPCC04B40/0039C04B18/12C04B18/10C04B14/42C04B14/047C04B22/148C04B22/126C04B12/04C04B24/2652C04B2103/302Y02W30/91
Inventor 颜冬
Owner 成都新豪鼎盛建材有限公司