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Production method of carbon fiber composite graphene-reinforced recycled concrete

A technology of composite graphene and recycled concrete, which is applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., to meet the requirements of use and solve the problem of reuse

Inactive Publication Date: 2016-11-16
XIJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, there is no literature report on the use of carbon fiber and graphene in recycled concrete

Method used

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  • Production method of carbon fiber composite graphene-reinforced recycled concrete
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Experimental program
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Effect test

Embodiment 1

[0037] Embodiment 1, a kind of preparation method of carbon fiber composite graphene reinforced recycled concrete comprises the following steps:

[0038] Step 1: prepare materials according to the following mass ratio, cement: sand: coarse aggregate: water: nano material: water reducer: fiber material = 1: 1.4: 2.6: 0.28: 0.0001: 0.02: 0.012, the cement is 42.5 R ordinary Portland cement, the sand is medium sand, the coarse aggregate is a mixture of natural crushed stone and recycled aggregate with a replacement rate of 30%, and the replacement rate is the weight of waste concrete to the total mass of coarse aggregate The nanomaterial is graphene with a particle size of 0.6-1nm, the water reducer is a carboxylic acid-based high-efficiency water reducer, and the water reducing efficiency is 20% to 30%, and the fiber is nano Carbon fibers with an average diameter of 150nm and a length of 30-100um;

[0039] Step 2: Mix nanomaterials, water reducing agent and water, and perform u...

Embodiment 2

[0043] Embodiment 2, a kind of preparation method of carbon fiber composite graphene reinforced recycled concrete comprises the following steps:

[0044] Step 1: prepare materials according to the following mass ratio, cement: sand: coarse aggregate: water: nanomaterial: water reducer: fiber material = 1: 1.5: 2.8: 0.30: 0.0002: 0.01: 0.014, the cement is 42.5 R ordinary Portland cement, the sand is medium sand, the coarse aggregate is a mixture of natural crushed stone and recycled aggregate with a replacement rate of 30%, and the replacement rate is the weight of waste concrete to the total mass of coarse aggregate The nanomaterial is graphene with a particle size of 0.6-1nm, the water reducer is a carboxylic acid-based high-efficiency water reducer, and the water reducing efficiency is 20% to 30%, and the fiber is nano Carbon fibers with an average diameter of 150nm and a length of 30-100um;

[0045] Step 2: Mix nanomaterials, water reducing agent and water, and perform ul...

Embodiment 3

[0049] Embodiment 3, a kind of preparation method of carbon fiber composite graphene reinforced recycled concrete, comprises the following steps:

[0050] Step 1: prepare materials according to the following mass ratio, cement: sand: coarse aggregate: water: nano material: water reducer: fiber material = 1: 1.5: 2.8: 0.28: 0.0003: 0.03: 0.016, the cement is 42.5 R ordinary Portland cement, the sand is medium sand, the coarse aggregate is a mixture of natural crushed stone and recycled aggregate with a replacement rate of 50%, and the replacement rate is the weight of waste concrete to the total mass of coarse aggregate The nanomaterial is graphene with a particle size of 0.6-1nm, the water reducer is a carboxylic acid-based high-efficiency water reducer, and the water reducing efficiency is 20% to 30%, and the fiber is nano Carbon fibers with an average diameter of 150nm and a length of 30-100um;

[0051] Step 2: Mix nanomaterials, water reducing agent and water, and perform ...

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Abstract

A production method of carbon fiber composite graphene-reinforced recycled concrete includes: first, preparing the materials: cement, sand, coarse aggregate, water, a nanomaterial, a water reducer, and a fiber material according to the ratio of 1:(1.4-1.6): (2.6-3): (0.28-0.32): (0.0001-0.0005): (0.01-0.05): (0.012-0.016); second, mixing the nanomaterial, the water reducer and the water, and ultrasonically dispersing to obtain a suspension; third, placing the cement, fiber material, sand and coarse aggregate in a stirring unit, and stirring well to obtain a mixture; adding the suspension into the mixture, stirring to obtain the carbon fiber composite graphene-reinforced recycled concrete; the nanomaterial is graphene, the fiber material is nano carbon fiber, and the concrete produced herein is more compact and has greatly improved breaking strength and compressive strength.

Description

technical field [0001] The invention relates to the technical field of recycled concrete, in particular to a preparation method of carbon fiber composite graphene reinforced recycled concrete. Background technique [0002] The main problem of traditional concrete is brittleness, many micro-cracks and micro-pores in concrete, and weak connection interface. Although, in order to solve this problem, many experts at home and abroad have mixed fiber materials, active minerals and high-efficiency water reducers in concrete. Although it can improve the performance of concrete to a certain extent, the effect is very small. [0003] Graphene material is a newly emerging high-performance material, which is currently the thinnest and strongest nanomaterial in the world. Its super strength and toughness, super large specific surface area are favored by people; the use of graphene in recycled concrete can not only solve the defects caused by traditional concrete, but also push building ...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B14/02C04B14/38C04B18/16
CPCC04B14/024C04B14/386C04B28/04C04B2201/50C04B14/06C04B14/02C04B18/16C04B22/002C04B24/24Y02W30/91
Inventor 张明明王社良张世民樊耀虎
Owner XIJING UNIV
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