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A kind of high-performance recycled damping aggregate concrete and its preparation method

A technology of recycled coarse aggregate and concrete, which is applied in the field of building materials, can solve the problems of inability to balance mechanical properties and damping functions, and achieve the effects of improving the ability to resist sudden catastrophic damage, improving durability, and saving costs

Active Publication Date: 2021-12-24
易县东正商品混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are technical bottlenecks that cannot balance the mechanical properties and damping functions

Method used

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  • A kind of high-performance recycled damping aggregate concrete and its preparation method
  • A kind of high-performance recycled damping aggregate concrete and its preparation method
  • A kind of high-performance recycled damping aggregate concrete and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] According to the mass ratio of each component in high-performance recycled damping aggregate concrete per cubic meter, 32.5R ordinary Portland cement: fine aggregate: recycled damping aggregate: water: high-efficiency water reducer: nano-silica powder = 1 : 1.04: 1.84: 0.30: 0.005: 0.01, hybrid fiber B is 0.08 of the total volume of concrete, using this ratio relationship for the preparation of high-performance recycled damping aggregate concrete.

[0045] First mix the weighed high-efficiency water reducer with 80% test water and stir evenly for 60s to form a mixed solution, then slowly pour in the weighed nano-silica powder, stir evenly for 180s, the mixing of water and water reducer Liquid can play the role of dispersant, effectively preventing too much adsorption of nanoparticles on the inner wall of the container. The mixture is mixed by "HJW-100" type concrete forced mixer, and the feeding sequence is as follows: first dry-mix the recycled damping aggregate, natur...

Embodiment 2

[0047] According to the mass ratio of each component in high-performance recycled damping aggregate concrete per cubic meter, 32.5R ordinary Portland cement: fine aggregate: recycled damping aggregate: water: high-efficiency water reducer: nano-silica powder = 1 : 1.08: 2: 0.35: 0.007: 0.013, the hybrid fiber B is 0.1% of the total volume of the concrete, and this ratio relationship is used to prepare high-performance recycled damping aggregate concrete.

[0048] First mix the weighed high-efficiency water reducer with 80% test water and stir evenly for 60s to form a mixed solution, then slowly pour in the weighed nano-silica powder, stir evenly for 180s, the mixing of water and water reducer Liquid can play the role of dispersant, effectively preventing too much adsorption of nanoparticles on the inner wall of the container. The mixture is mixed by "HJW-100" type concrete forced mixer, and the feeding sequence is as follows: first dry-mix the recycled damping aggregate, natur...

Embodiment 3

[0050] According to the mass ratio of each component in high-performance recycled damping aggregate concrete per cubic meter, 32.5R ordinary Portland cement: fine aggregate: recycled damping aggregate: water: high-efficiency water reducer: nano-silica powder = 1 : 2.01: 2.25: 0.4: 0.01: 0.015, the hybrid fiber B is 0.12% of the total volume of concrete, and this ratio relationship is used to prepare high-performance recycled damping aggregate concrete.

[0051] First mix the weighed high-efficiency water reducer with 80% test water and stir evenly for 60s to form a mixed solution, then slowly pour in the weighed nano-silica powder, stir evenly for 180s, the mixing of water and water reducer Liquid can play the role of dispersant, effectively preventing too much adsorption of nanoparticles on the inner wall of the container. The mixture is mixed by "HJW-100" type concrete forced mixer, and the feeding sequence is as follows: first dry-mix the recycled damping aggregate, natural...

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Abstract

The invention discloses a high-performance recycled damping aggregate concrete and a preparation method thereof. The raw materials include cement, fine aggregate, recycled damping aggregate, water, high-efficiency water reducing agent and nano-silica powder, cement, fine aggregate, The mass ratio of regenerative damping aggregate, water, superplasticizer and nano silica powder is 1: (1.04~2.01): (1.84~2.25): (0.30~0.4): (0.005~0.01): (0.01~ 0.015); the recycled damping aggregate includes recycled coarse aggregate, high damping polymer, waterproof polymer and hybrid fiber A, the high damping polymer penetrates into the interior and surface of the recycled coarse aggregate, and the surface of the high damping polymer wraps from inside to outside Waterproof polymer and hybrid fiber A. It can significantly improve the damping function of concrete without reducing its mechanical properties.

Description

technical field [0001] The invention belongs to the field of building materials, and relates to a high-performance recycled damping aggregate concrete and a preparation method thereof. Background technique [0002] my country is in an era of rapid urbanization expansion and development, and high-rise buildings develop rapidly because of their ability to solve the problem of urban land shortage and ease population pressure. However, during the service process, high-rise buildings are prone to horizontal displacement due to wind and seismic load excitation, and the horizontal displacement will increase with the increase of wind force; Second, high-rise buildings are subjected to high-frequency earthquakes and produce large mechanical responses, which can easily cause the main structure to lose its elastic stress state, and obvious damage such as cracks in walls or columns. Many high-rise buildings often stand in the center of the city, with dense population and heavy traffic,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B20/12C04B111/20
CPCC04B28/04C04B20/12C04B2201/50C04B2111/2046C04B2111/2053C04B2111/00025C04B14/062C04B14/02C04B2103/302C04B18/16C04B20/1033C04B20/1029C04B20/1018C04B20/1055
Inventor 樊禹江余滨杉孙克清赵言军王婧徐涵谭赐熊二刚
Owner 易县东正商品混凝土有限公司