High-performance recycled concrete and preparation process thereof

A technology of recycled concrete and preparation technology, which is applied in construction, construction material processing, building construction, etc., and can solve problems such as low apparent density, poor durability, and large crushing index, so as to improve compactness and work performance , the effect of improving the overall strength

Active Publication Date: 2019-12-06
ZHEJIANG YUEDA TRAFFIC ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the recycled concrete aggregate obtained after crushing waste concrete and discarded bricks has too many edges and corners, and most of the recycled aggregate is needle-shaped
Moreover, during the crushing process of recycled aggregates, tiny cracks will be generated inside the aggregates, and at the same time, a part of the old mortar is generally adhered to the surface of recycled aggregates, so that compared with natural ag

Method used

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  • High-performance recycled concrete and preparation process thereof
  • High-performance recycled concrete and preparation process thereof
  • High-performance recycled concrete and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0134] The difference between Embodiment 10-13 and Embodiment 1 is that the nutrient solution comprises the following raw materials in weight percentage:

[0135]

[0136]

[0137] The difference between Embodiment 14-17 and Embodiment 1 is that the first auxiliary agent includes the following raw materials in weight percentage:

[0138]

[0139] The difference between Embodiment 18-21 and Embodiment 1 is that the second auxiliary agent includes the following raw materials in weight percentage:

[0140]

[0141] The difference between Embodiment 22-25 and Embodiment 1 is that the reinforcing agent includes the following raw materials in weight percentage:

[0142]

[0143]

[0144] The difference between Embodiment 26-29 and Embodiment 1 is that the fibrous filler comprises the following raw materials in weight percent:

[0145]

[0146] The difference between Embodiment 30-33 and Embodiment 1 is that all the other admixtures include the following raw mat...

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Abstract

The invention discloses high-performance recycled concrete and a preparation process thereof, and relates to the technical field of concrete preparation. The concrete includes the following raw materials in parts by weight: 220-240 parts of cement; 140-160 parts of fly ash; 60-80 parts of mineral powder; 600-800 parts of modified recycled coarse aggregate; 500-700 parts of natural gravel; 600-700parts of machined sand; 20-40 parts of a reinforcing agent; 40-60 parts of silicon powder; 4-8 parts of other additives; and 180-200 parts of water. By adjusting the ratio of the various raw materialsof the concrete, adding the reinforcing agent and modifying the recycled aggregate, the working performance of the concrete can be effectively improved, and the compactness and overall strength of the concrete can be improved.

Description

technical field [0001] The invention relates to the technical field of concrete preparation, in particular to a high-performance recycled concrete and a preparation process thereof. Background technique [0002] With the development of society, there are more and more buildings and construction projects. Concrete components are widely used in columns and foundation piles of tower structures, industrial plants and civil buildings. With the transformation of the city, a large number of abandoned buildings in the city have formed construction waste. The disposal of these construction waste not only requires a large area of ​​storage yard, but also costs a lot of manpower and material resources. With the development of construction science, effective utilization of construction waste has become a new topic. [0003] The construction waste formed from the concrete of abandoned buildings is recycled into recycled concrete after shredding, which not only handles a large amount of ...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B20/12E04G21/02E04G21/24
CPCC04B20/12C04B28/00C04B2111/00017E04G21/02E04G21/246C04B18/08C04B14/02C04B18/16C04B14/06C04B18/146C04B20/1029C04B20/107C04B20/1074C04B20/1066C04B20/1033C04B20/1018
Inventor 朱虹俞艳张潮锋
Owner ZHEJIANG YUEDA TRAFFIC ENG CO LTD
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