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Scour-resistant and abrasion-resistant concrete for hydraulic engineering and preparation method thereof

A water conservancy engineering and concrete technology, which is applied in the field of impact-resistant and wear-resistant concrete for hydraulic engineering and its preparation, can solve the problems of impact and abrasion damage, endangering the safety of buildings, damage, etc. The effect of improving the abrasion resistance

Active Publication Date: 2016-04-20
平越
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the survey, 70% of the dam discharge structures in operation in our country have different degrees of abrasion damage, and some are even very serious, not only being damaged, but also endangering the safety of other buildings.

Method used

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  • Scour-resistant and abrasion-resistant concrete for hydraulic engineering and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: a. Combine 800 mesh graphite powder 3 kg, 800 mesh aluminum nitride 6.5 kg, Changzhou Tianyi Engineering Fiber Co., Ltd. length 9mm polyvinyl alcohol fiber 2.2 kg, Changzhou Tianyi Engineering Fiber Co., Ltd. length 6mm 1.2 kg of ester fiber is added to the double cone mixer and mixed evenly;

[0018] b. Mix 0.2 kilograms of sodium polystyrene sulfonate, 0.6 kilograms of sodium polyacrylate, 0.2 kilograms of zinc acetate, and 17 kilograms of water. The mixture in the same step a is mixed and stirred, and then 80 kilograms of Conch brand PO425R ordinary portland cement are added. 21 kg of 200 mesh potassium feldspar powder, 14 kg of 400 mesh fly ash, and 14 kg of 600 mesh lepidolite are mixed evenly;

[0019] c. Mix 2 kg of polycarboxylic acid water reducer, 0.7 kg of hydroxyethyl methacrylate, and 17 kg of water, and mix and stir evenly;

[0020] d. Add the mixture in step c to the mixture in step b, mix and stir uniformly, and discharge.

Embodiment 2

[0021] Example 2: a. Combine 800 mesh graphite powder 3 kg, 800 mesh aluminum nitride 6 kg, Changzhou Tianyi Engineering Fiber Co., Ltd. length 9mm polyvinyl alcohol fiber 2 kg, Changzhou Tianyi Engineering Fiber Co., Ltd. length 6mm Add 1 kg of ester fiber into the double cone mixer and mix well;

[0022] b. Mix 0.2 kilograms of sodium polystyrene sulfonate, 0.5 kilograms of sodium polyacrylate, 0.2 kilograms of zinc acetate, and 16 kilograms of water. The mixture in the same step a is mixed and stirred, and then 77 kilograms of Conch brand PO425R ordinary Portland cement are added. 20 kg of 200 mesh potassium feldspar powder, 13 kg of 400 mesh fly ash, and 13 kg of 600 mesh lepidolite are mixed evenly;

[0023] c. Mix 1.5 kg of polycarboxylic acid water reducer from Hunan Muyuan Building Material Technology Co., Ltd., 0.6 kg of hydroxyethyl methacrylate, and 16 kg of water, and mix and stir evenly;

[0024] d. Add the mixture in step c to the mixture in step b, mix and stir unifor...

Embodiment 3

[0025] Example 3: a. 4 kg of 800 mesh graphite powder, 7 kg of 800 mesh aluminum nitride, 2.5 kg of polyvinyl alcohol fiber in Changzhou Tianyi Engineering Fiber Co., Ltd. length 9mm, and 2.5 kg of PVA fiber in Changzhou Tianyi Engineering Fiber Co., Ltd. length 6mm 1.2 kg of ester fiber is added to the double cone mixer and mixed evenly;

[0026] b. Mix 0.3 kilograms of sodium polystyrene sulfonate, 0.7 kilograms of sodium polyacrylate, 0.3 kilograms of zinc acetate, and 18 kilograms of water. The mixture in the same step a is mixed and stirred, and then 84 kilograms of Conch brand PO425R ordinary portland cement are added. Stir 24 kg of 200 mesh potassium feldspar powder, 15 kg of 400 mesh fly ash, and 15 kg of 600 mesh lepidolite;

[0027] c. Mix 2.5 kg of polycarboxylic acid water reducing agent from Hunan Muyuan Building Material Technology Co., Ltd., 0.8 kg of hydroxyethyl methacrylate, and 18 kg of water, and mix and stir evenly;

[0028] d. Add the mixture in step c to the m...

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Abstract

The invention discloses scour-resistant and abrasion-resistant concrete for hydraulic engineering. The scour-resistant and abrasion-resistant concrete for hydraulic engineering is prepared from, by weight, 77-84 parts of ordinary portland cement, 20-22 parts of potassium feldspar powder, 13-15 parts of coal ash, 13-15 parts of lepidolite, 3-4 parts of graphite powder, 6-7 parts of aluminum nitride, 2-2.5 parts of polyvinyl alcohol fibers, 1-1.2 parts of lignin fibers, 0.2-0.3 part of sodium polystyrene sulfonate, 0.5-0.7 part of sodium polyacrylate, 0.2-0.3 part of zinc acetate, 1.5-2.5 parts of a polycarboxylate superplasticizer, 0.6-0.8 part of hydroxyethyl methylacrylate and 32-36 parts of water. The scour-resistant and abrasion-resistant concrete for hydraulic engineering is prepared through a special formula and a unique stirring process, and the scour and abrasion resisting capability of the scour-resistant and abrasion-resistant concrete for hydraulic engineering is effectively improved; the dry shrinkage deformation of the concrete is effectively reduced, and therefore the crack resisting capability of the scour-resistant and abrasion-resistant concrete for hydraulic engineering is improved.

Description

Technical field [0001] The invention belongs to the technical field of building construction, and is specifically an impact-resistant and wear-resistant concrete for water conservancy projects and a preparation method thereof. Background technique [0002] The erosion, wear and cavitation damage of hydraulic structures caused by high-speed water flow, sandy water flow, and bed-loaded water flow has always been a common way to destroy hydraulic structures such as overflow dams, spillway channels, and sluices. Long-term concerns and issues that need to be properly resolved in hydropower construction. According to investigations, 70% of the dam discharge structures in operation in my country have different degrees of erosion and damage, and some are even very serious. Not only are they damaged, but also the safety of other buildings is endangered. [0003] Concrete used for hydraulic structures that are often or periodically affected by environmental water. According to the size of ...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B111/74
CPCC04B28/04C04B2111/2038C04B2111/74C04B2201/50C04B2201/52C04B14/045C04B18/08C04B14/20C04B14/024C04B14/326C04B16/0641C04B16/02C04B24/163C04B24/26C04B24/04C04B24/045C04B16/0683C04B24/2641C04B2103/302C04B16/06
Inventor 乔俊擎
Owner 平越
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