Low-temperature-difference mass concrete suitable for articulated chute construction and preparation process of low-temperature-difference mass concrete

A large-volume concrete and low-temperature technology, applied in the field of high-performance concrete, can solve the problems of large ground drop in the working surface, long chute delivery distance, small chute inclination angle, etc., to reduce the amount of cement, delay the hydration reaction, and connect holes Reduced effect
CN112125612AActive Publication Date: 2020-12-25陕西秦汉恒盛新型建材科技股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
陕西秦汉恒盛新型建材科技股份有限公司
Publication Date
2020-12-25

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Abstract

The invention discloses low-temperature-difference mass concrete suitable for articulated chute construction. The low-temperature-difference mass concrete is prepared from the following components inparts by mass: 150-200 parts of cement, 260-320 parts of mineral powder, 80-120 parts of fly ash, 100-150 parts of water, 900-1200 parts of gravels, 700-800 parts of sand and 8-20 parts of a pumping agent. The invention further discloses a process for preparing the low-temperature-difference mass concrete suitable for articulated chute construction. The sand, gravels and water are evenly mixed, then the cement, the fly ash, the mineral powder and the pumping agent are added, and the mixture is evenly stirred. The fly ash and the mineral powder are adopted, the hydration heat of the cement is reduced, the temperature difference between the inside and the outside of the mass concrete is reduced, the segregation resistance of the mass concrete is improved, and the strength and the working performance of the mass concrete are ensured, so that shrinkage deformation and slurry-bone separation of the mass concrete are reduced, and the mass concrete is suitable for articulated chute construction; the preparation process is simple and easy to implement.
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Description

technical field

[0001] The invention belongs to the technical field of high-performance concrete, and in particular relates to a low-temperature-difference large-volume concrete suitable for chute construction and a preparation process thereof. Background technique

[0002] With the rapid development of social economy, it is more and more common to use large-volume concrete in modern construction projects such as high-rise buildings, water conservancy projects, and large-scale equipment. The characteristics of large-volume concrete are large volume and internal temperature rise. The release of cement hydration heat is relatively concentrated, and when the temperature difference between inside and outside is large, it is easy to cause temperature cracks. Such cracks will affect the appearance of the building in the slightest, and affect its impermeability and overall safety in severe cases, burying many hidden dangers .

[0003] In the raft pouring of super high-rise buildin...

Claims

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