Road semi-rigid base waste recycled concrete and preparation method thereof

A semi-rigid base and recycled concrete technology, which is applied in the field of civil engineering materials, can solve the problems of serious environmental damage effects, high power consumption, and mountain damage, and achieve the effects of saving manpower and material resources, reducing raw material costs, and reducing pollution and damage

Inactive Publication Date: 2018-11-30
XIAN UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary concrete is mainly composed of cement and stone, and the production of cement not only consumes a lot of electricity, but also causes environmental pollution, such as smog
The mining of stone materials will not only consume a lot of manpower and material resources, but also cause more serious damage to the mountain and cause more serious environmental damage.

Method used

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  • Road semi-rigid base waste recycled concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The pavement semi-rigid base waste regenerated concrete of this embodiment is made of the following components by mass: 1500 parts of semi-rigid base waste, 450 parts of 42.5 ordinary Portland cement, 270 parts of Class I fly ash, and 210 parts of silica fume. 30 parts of quicklime powder, 10 parts of iron powder, 100 parts of iron-containing polypropylene fiber, 41 parts of concrete regeneration agent, and 311 parts of water; the semi-rigid grassroots waste is first milled and then crushed until the particle size does not exceed 0.6mm The primary material; the silica fume is amorphous spherical particles, SiO in silica fume 2 The mass content of not less than 83%, SiO 2 The specific surface area is not less than 15m 2 / g; the main components of the concrete regeneration agent are: isoprenyl polyoxyethylene ether, hydrogen peroxide, vinyltriethoxysilane, sodium hydroxide, ferrous sulfate, acrylic acid, methallyl Polyethylene glycol macromonomer, acrylic acid, ammonium...

Embodiment 2

[0043] The pavement semi-rigid base waste regenerated concrete of this embodiment is made of the following components by mass: 780 parts of semi-rigid base waste, 500 parts of 42.5 ordinary Portland cement, 57 parts of Class I fly ash, and 30 parts of silica fume. 100 parts, 100 parts of iron-containing polypropylene fiber, 36 parts of concrete regeneration agent, 255 parts of water; the semi-rigid base waste material is milled and then crushed to a particle size of no more than 0.6mm primary material; the silica fume is Shaped spherical particles, SiO in silica fume 2 The mass content of not less than 83%, SiO 2 The specific surface area is not less than 15m 2 / g; the main components of the concrete regeneration agent are: isoprenyl polyoxyethylene ether, hydrogen peroxide, vinyltriethoxysilane, sodium hydroxide, ferrous sulfate, acrylic acid, methallyl Polyethylene glycol macromonomer, acrylic acid, ammonium persulfate, mercaptoacetic acid, branched active macromonomer and ...

Embodiment 3

[0049] The pavement semi-rigid base waste regenerated concrete of this embodiment is made of the following components by mass: 1900 parts of semi-rigid base waste, 400 parts of 42.5 ordinary Portland cement, 400 parts of Class I fly ash, and 240 parts of silica fume. 100 parts, 100 parts of iron-containing polypropylene fiber, 80 parts of concrete regeneration agent, and 230 parts of water; the semi-rigid base waste material is milled and then crushed to a particle size of no more than 0.6mm; the silica fume is Shaped spherical particles, SiO in silica fume 2 The mass content of not less than 83%, SiO 2 The specific surface area is not less than 15m 2 / g; the main components of the concrete regeneration agent are: isoprenyl polyoxyethylene ether, hydrogen peroxide, vinyltriethoxysilane, sodium hydroxide, ferrous sulfate, acrylic acid, methallyl Polyethylene glycol macromonomer, acrylic acid, ammonium persulfate, mercaptoacetic acid, branched active macromonomer and sodium bi...

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Abstract

The invention discloses road semi-rigid base waste recycled concrete which is mainly prepared from components of semi-rigid base waste, cement, fly ash, silica fume, iron-containing polypropylene fibers, a concrete recycling agent and water. The semi-rigid base waste is waste which is milled, planed and crushed to the particle size not exceeding 25 mm. The invention also discloses a preparation method of the recycled concrete. The raw materials are mixed and then stirred evenly with a concrete recycling agent solution, and the mixture is poured into a mould, then interpolated and vibrated in turn, and then allowed to stand, demoulded and cured. The semi-rigid base waste in the recycled concrete forms an approximate closest stacking structure with cement, fly ash and silica fume and acts asan active component to react to form a dense colloid, and the tensile strength of the recycled concrete is improved and the requirements of road use are met. Because the semi-rigid base waste has a wide range of sources and has unlimited activity, the raw material cost is reduced and damage to the environment is reduced. The preparation method is simple and suitable for popularization.

Description

technical field [0001] The invention belongs to the technical field of civil engineering materials, and in particular relates to a semi-rigid base course waste recycled concrete for road use and a preparation method thereof. Background technique [0002] my country's early cement concrete pavement has gradually reached the end of its service life, and has now entered the period of major and medium repairs. In the process of maintenance and reconstruction of cement concrete pavement, a large amount of semi-rigid grassroots waste materials are produced, including cement or lime, crushed stone, gravel, fine sand or fine-grained soil, etc., which are not only difficult to handle, but also lead to stacking land, and environmental pollution. [0003] The invention patent with the application number of 2006101049010 discloses a road-use recycled cement concrete and its preparation method. In the recycled cement concrete component, all or part of the recycled coarse aggregate forme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2201/50C04B18/16C04B18/08C04B18/146C04B14/28C04B22/04C04B16/0633C04B24/32C04B24/42C04B22/068C04B22/062C04B22/149C04B24/04C04B22/147C04B24/16
Inventor 李晓军易浩胡陈直杨瑞枝李昊吴燕利
Owner XIAN UNIV OF SCI & TECH
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