Composite admixture for improving durability of common concrete by improving grading

A technology of ordinary concrete and composite admixtures, which is applied in the field of building materials, can solve the problem of insufficient depth and comprehensiveness, the lack of systematic theoretical guidance for the preparation and application of mineral admixtures, and the inability to effectively improve the workability of concrete. Concrete compactness and strength And durability and other issues, to achieve good economic and social benefits, improve durability, and improve durability
CN113754340APending Publication Date: 2021-12-07GUIZHOU UNIV OF ENG SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUIZHOU UNIV OF ENG SCI
Publication Date
2021-12-07

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Abstract

The invention belongs to the technical field of building materials, and discloses a composite admixture for improving the durability of common concrete by improving grading. The composite admixture for improving the durability of common concrete by improving grading is composed of the components in parts by mass: 25 to 30 parts of volcanic rock powder, 10 to 15 parts of steel slag, 10 to 15 parts of fly ash, 10 to 15 parts of desulfurized gypsum powder, 8 to 10 parts of carbon fiber, 8 to 12 parts of modified phenolic resin and 5 to 8 parts of activated aluminosilicate mineral. Through cooperation of the fly ash, the volcanic rock powder and the steel slag, proper fluidity can be provided for the concrete, the porosity is reduced, the compactness of a system can be improved, the use amount of water can be reduced, and the durability of the concrete is further improved. The carbon fibers, the modified phenolic resin, the fly ash, the volcanic rock powder and the steel slag are added and blended, so that the pore structure of the concrete is improved, the compactness of the concrete is improved, and the durability of the concrete is improved.
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Description

technical field

[0001] The invention belongs to the technical field of building materials, and in particular relates to a composite admixture for improving the durability of ordinary concrete through improved gradation. Background technique

[0002] At present: Composite admixture refers to the use of two or more mineral materials that are separately ground to a specified fineness and then mixed in a certain proportion or after mixing two or more mineral materials in a certain proportion. Then grind to the specified fineness powder material. The interaction of cementitious materials in the mixing process produces effects such as induced activation, surface microcrystallization and interface coupling, so that the added composite mineral admixture can effectively improve the workability of concrete and the compactness, strength and durability of hardened concrete sex. However, due to the lack of systematic theoretical guidance on the preparation and application of mineral ad...

Claims

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