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High-strength anti-crack concrete and preparation process thereof

A high-strength, concrete technology, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve problems such as concrete cracking and concrete cracking

Inactive Publication Date: 2020-05-01
杭州三中新型建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing concrete is prone to cracking. Concrete cracking is due to the fact that after the concrete is poured, the hydration reaction of the cement will release a large amount of heat. At the same time, during the setting and hardening of the concrete, the internal temperature of the concrete will increase. At the end of the hydration reaction, due to the continuous loss of heat, the concrete enters the cooling process. During this process, the concrete volume will shrink, and when the tensile stress generated by the shrinkage is greater than the tensile strength limit of the concrete member, concrete cracking will occur. How to prevent concrete cracking is an important subject of extensive research

Method used

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  • High-strength anti-crack concrete and preparation process thereof
  • High-strength anti-crack concrete and preparation process thereof
  • High-strength anti-crack concrete and preparation process thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0052] The invention discloses a preparation process of high-strength crack-resistant concrete, which comprises the following process steps:

[0053] 1) Prepare the fiber filler, including the following preparation steps: by weight percentage, first mix 28% deionized water and 8% emulsifier evenly, then add 32% steel fiber and 22% polypropylene fiber, stir evenly Finally, add preservative and mix evenly to obtain fiber filler;

[0054] Wherein, the preservative comprises the following preparation steps: by weight percentage, first mix 25% triethanolamine dodecylbenzenesulfonate, 15% zinc oxide, 15% sodium monofluorophosphate and 20% deionized water uniform, and then add 25% PVP / graphene composite material and stir evenly to obtain a preservative;

[0055] Wherein, the emulsifier comprises the following raw materials in weight percent:

[0056] OP-40 emulsifier 25%;

[0057] Sodium Lauryl Sulfonate 45%;

[0058] GR-200 paraffin emulsifier 30%;

[0059] 2) Prepare the slow-...

Embodiment 1

[0071] The difference between embodiments 10-13 and embodiment 1 is that the preservative comprises the following raw materials in percentage by weight:

[0072]

[0073] The difference between Embodiment 14-17 and Embodiment 1 is that the emulsifier comprises the following raw materials in weight percent:

[0074]

[0075] The difference between Embodiment 18-21 and Embodiment 1 is that the slow-release alkali agent comprises the following raw materials in weight percentage:

[0076]

[0077] The difference between embodiment 22-25 and embodiment 1 is that the basic conditioner comprises the following raw materials in weight percent:

[0078]

[0079] The difference between embodiment 26-29 and embodiment 1 is that the active admixture comprises the following raw materials in weight percent:

[0080]

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Abstract

The invention relates to high-strength anti-crack concrete and a preparation process thereof. The high-strength anti-crack concrete is prepared from the following raw materials in parts by weight: 180-200 parts of ordinary Portland cement; 1180-1220 parts of coarse aggregate; 600-640 parts of fine aggregate; 200-240 parts of an active admixture; 8-12 parts of a polycarboxylate superplasticizer; 30-50 parts of fiber filler; 4-8 parts of a slow-release alkaline agent; 180-200 parts of water. The fiber filler is added to toughen the concrete, so that the anti-cracking effect and strength of the concrete are improved.

Description

technical field [0001] The invention relates to the technical field of concrete preparation, in particular to a high-strength crack-resistant concrete and a preparation process thereof. Background technique [0002] Concrete, referred to as "concrete" for short: refers to the collective name of engineering composite materials in which aggregates are cemented into a whole by cementitious materials. Generally speaking, the term concrete refers to the cement concrete obtained by using cement as the cementitious material, sand and stone as the aggregate; mixed with water (may contain admixtures and admixtures) in a certain proportion, and stirred. Concrete, which is widely used in the construction industry. [0003] Existing concrete is prone to cracking. Concrete cracking is due to the fact that after the concrete is poured, the hydration reaction of the cement will release a large amount of heat. At the same time, during the setting and hardening of the concrete, the internal...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B24/32C04B24/20C04B18/14C04B111/20C04B111/22C04B111/26
CPCC04B28/04C04B40/0039C04B2111/00146C04B2111/2023C04B2111/22C04B2111/26C04B2201/52C04B14/00C04B18/08C04B18/141C04B14/062C04B2103/302C04B14/48C04B16/0633C04B24/20C04B24/2652C04B22/02C04B22/06C04B22/16C04B24/32C04B24/16C04B2103/406C04B14/36C04B24/14C04B24/06C04B22/064C04B24/04C04B24/123Y02W30/91
Inventor 刘臻一朱建峰
Owner 杭州三中新型建材科技有限公司
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