Recycled concrete made of discarded fiber and preparation method thereof

A technology of recycled concrete and waste fiber, which is applied in the preparation of waste fiber concrete and the field of new concrete materials. It can solve the problems of low ultimate elongation, low tensile strength, and poor crack resistance, so as to reduce shrinkage cracks and improve toughness. , Improve the effect of recycling rate

Inactive Publication Date: 2013-02-13
SHENYANG JIANZHU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although concrete has been widely used, it also has some shortcomings, such as: low tensile strength, low ultimate elongation, brittleness, poor crack resistance, etc. These shortcomings limit the wider use of concrete in some aspects. In some fields and places, it cannot fully play its due role

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Cement: water: sand: (crushed stone + recycled concrete aggregate) weight percentage is 1: 0.45: 1.6: 2.5, waste fiber accounts for 1% of the total volume

[0021] 0.06%, mixed evenly; that is, waste fiber recycled concrete was obtained.

Embodiment 2

[0023] Cement: water: sand: (crushed stone + recycled concrete aggregate) weight percentage is 1: 0.6: 2: 3.5, the mass of waste fiber accounts for the total volume

[0024] 0.2% of the mixture, mixed evenly; that is, waste fiber recycled concrete was obtained.

Embodiment 3

[0026] Cement: water: sand: (crushed stone + recycled concrete aggregate) weight percentage is 1: 0.5: 1.8: 3, the mass of waste fiber accounts for the total volume

[0027] 0.1% of the mixture, mixed evenly; that is, waste fiber recycled concrete was obtained.

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PUM

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Abstract

The full name of the invention is recycled concrete made of discarded fiber and a preparation method thereof. The technology supplies a novel concrete material formed by using the discarded fiber and discarded concrete as aggregates. After the discarded fiber and the discarded concrete are disposed according to a regulation, the discarded fiber and the discarded concrete with cement, sands, macadam and water are mixed evenly according to a certain ratio, and then a novel construction material with high intensity is formed. By means of the recycled concrete, the discarded concrete can be largely consumed, recycling rate of the discarded fiber is improved, and environmental pollution is reduced. Improvement of use ratio of discarded textile fiber, recycling of construction waste and management of solid waste are of great significance. Therefore, the current situation of resource shortage of the country can be effectively improved, resources can be conserved, resource utilization rate can be improved, and better development of the novel construction material of the country can be achieved.

Description

technical field [0001] The invention relates to a new type of engineering construction material with high strength, economical and environmental protection, more specifically, it is a new type of concrete material formed by using waste fiber and waste concrete as aggregates. The invention also relates to a method for preparing such waste fiber concrete. Background technique [0002] With the continuous development of industrial technology, building materials have also been greatly improved. Among them, concrete has become the largest building material due to its high strength, durability, low cost and other advantages. Concrete will still be the dominant material in civil engineering in the future, but the structure will eventually have its service life, and the end-of-life structure will become construction waste. New buildings and natural disasters will also produce a large amount of construction waste. According to statistics, 40% of industrial solid waste It is dischar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00
Inventor 周静海王凤池孟宪宏周阳雪郭凯
Owner SHENYANG JIANZHU UNIVERSITY
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