Process for preparing reclaimed concrete pavement bricks

A recycled concrete and preparation technology, which is applied to roads, roads, and pavements paved with prefabricated blocks, etc., can solve the problems that construction waste cannot be effectively used, and building materials cannot meet the performance requirements of use, so as to achieve good water retention and permeability. Permeability, elimination of performance defects, excellent effect of isotropic performance

Inactive Publication Date: 2019-05-03
深圳绿景环保再生资源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a preparation process for recycled concrete pavement bricks, which solves the problem that construction waste cannot be effectively utilized or that recycled building materials cannot meet the performance requirements, and has a high utilization rate of construction waste, and the prepared building materials Advantages of good performance

Method used

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  • Process for preparing reclaimed concrete pavement bricks
  • Process for preparing reclaimed concrete pavement bricks

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Embodiment 1: A kind of preparation technology of regenerated concrete pavement brick, comprises base material and lining, and base material comprises the raw material of following parts by weight:

[0054] Construction waste recycled aggregate: 42 parts;

[0055] Gravel 0-5mm: 10 parts;

[0056] Mixed slag: 20 parts;

[0057] Cement P.C32.5: 10 parts;

[0058] Fly ash: 8 parts;

[0059] Gelling agent: 3 parts;

[0060] Water-swellable inorganic: 4.5 parts;

[0061] Polycarboxylate superplasticizer powder 1.5%;

[0062] Sulfamate superplasticizer powder 0.6%;

[0063] 0.4 parts of dispersant;

[0064] Wherein the material of the gelling agent comprises the following weight proportions: 30% of light magnesium oxide, 9% of ferrous sulfate, 12% of magnesium sulfate, 9% of magnesium chloride, 4% of sulfuric acid, 0.15% of dispersant, 0.15% of sodium gluconate, water 35.7%. Under the premise of keeping all physical indicators unchanged, it has good water retention, ...

Embodiment 2

[0082] Example 2: The difference from Example 1 is that the bottom material includes the following raw materials in parts by weight: 47.4 parts of recycled aggregate from construction waste, 12 parts of gravel 0-5mm, 18 parts of mixed water slag, cement P.C32. 5 10 parts, 5 parts of fly ash, 5 parts of gelling agent, 1.5 parts of water-swellable inorganic, 0.6% of polycarboxylate superplasticizer powder, 0.3% of sulfamate superplasticizer powder, and 0.2 part of dispersant.

[0083] The gelling agent comprises the following raw materials in parts by weight: light magnesium oxide 35%, ferrous sulfate 9%, magnesium sulfate 8%, magnesium chloride 3%, ammonium sulfate 2%, dispersant 0.05%, sodium gluconate 0.05%, water 39.9%.

[0084] The fabric includes the following raw materials in parts by weight: 68% of fine sand, 22.5% of white cement, 5% of quartz sand, 2% of pigment, and 2.5% of water-reducing and color-retaining agent.

Embodiment 3

[0085] Embodiment 3: The difference from Example 1 is that the base material includes the following raw materials in parts by weight: 55 parts of construction waste recycled aggregate, 10.4 parts of crushed stone 0-5mm, 14 parts of mixed water slag, cement P.C32 .5 10 parts, 5 parts of fly ash, 3 parts of gelling agent, 1.5 parts of water-swellable inorganic, 0.6% of polycarboxylate superplasticizer powder, 0.3% of sulfamate superplasticizer powder, and 0.2 parts of dispersant.

[0086] The gelling agent comprises the following raw materials in parts by weight: 40% of light magnesium oxide, 9% of ferrous sulfate, 8% of magnesium sulfate, 3% of magnesium chloride, 2% of ammonium sulfate, 0.05% of dispersant, 0.05% of sodium gluconate, water 37.9%.

[0087] The fabric includes the following raw materials in parts by weight: 60% of fine sand, 30% of white cement, 5% of quartz sand, 2.5% of pigment, and 2.5% of water-reducing and color-retaining agent.

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Abstract

The invention relates to a process for preparing reclaimed concrete pavement bricks. The reclaimed concrete pavement bricks comprise bedding materials and facings and are characterized in that the bedding materials are prepared from the following raw materials in parts by weight: 42-55 parts of construction waste recycled aggregates, 10-15 parts of gravels of 0 to 5mm, 14-20 parts of mixed water granulated slag, 10-15 parts of cement P.C 32.5, 5-8 parts of fly ash, 3-5 parts of gelling agent, 1.5-4.5 parts of water-absorption-swollen inorganics, 0.6%-1.5% of polycarboxylic acid water reducer powder, 0.3% to 0.6% of aminosulfate water reducer powder and 0.2-0.4 part of dispersant. Performance defects of recycled aggregates are effectively eliminated through synergism of the materials and control on humidity, vibration, pressure and the like in a production process; the strength is improved through remolding a crystal structure; and thus, construction wastes are effectively recycled, thecost is reduced, defects of recycled materials are overcome through processes and interaction among the materials, and the pavement bricks with high strength and excellent various properties are prepared.

Description

technical field [0001] The invention relates to the field of building material preparation, in particular to a preparation process of recycled concrete pavement bricks. Background technique [0002] Concrete pavement bricks in the prior art use cement and stones as the main raw materials, and are processed, pressurized or other molding processes to make concrete pavement bricks of various shapes. Concrete pavement bricks are mainly used for laying urban roads, sidewalks, and city squares. Blocks, slabs, etc. for concrete pavement and ground engineering. [0003] On the other hand, with the steady development of my country's national economy and the advancement of urbanization, the rapid development of the construction industry has brought about a continuous increase in the amount of construction waste. However, it is still a major difficulty to make use of the resource properties of construction waste and adopt a reasonable process to prepare recycled building materials. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/32C04B28/04E01C5/22C04B111/82
Inventor 刘文财
Owner 深圳绿景环保再生资源有限公司
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