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A kind of colored flexible permeable concrete and its preparation method and application

A permeable concrete and flexible technology, applied in roads, side ditch/curb, pavement details, etc., can solve the problem that tailings cannot be reused, and achieve the goal of promoting energy saving, emission reduction and comprehensive utilization, bright color and product quality improvement. Effect

Active Publication Date: 2018-12-21
辽宁科大中驰镁建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to solve the problem that the tailings cannot be reused, providing a colored flexible permeable concrete and its preparation method and application
The colored flexible permeable concrete prepared by the present invention uses crushed stone, magnesite tailings and chlorite iron tailings powder as concrete aggregates, which can not only recycle a large amount of mineral resources, improve the utilization rate of mineral resources, and effectively relieve tailings The ecological environment problems caused by stockpiling, and its basic properties such as high hardness and water permeability can be used to solve the urban surface hardening, solve the restoration problems of vegetation, wetlands, streams, etc., and benefit water and soil moisture retention

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The specific dosage per cubic meter of raw materials used in this implementation is as follows: cement P.O42.5: 370kg; ordinary gravel 3-5mm: 412.5kg; 5-8mm: 1237.5kg; chlorite powder: 330kg; cementing agent: 15kg ; Water reducer: 5.5kg; Pigment: 4.5kg; Water: 107.3kg.

[0042] Take the ordinary crushed stone as the coarse aggregate and the chlorite powder as the fine aggregate, add them to the mixer and mix evenly; then add the cement, cement, water reducing agent, and pigment into the mixer at one time and stir for about 30 seconds; then mix and stir Add 100g of water to the final dry material to make dry hard concrete.

[0043] The colored flexible permeable concrete prepared by the present invention has a 28d compressive strength of 33.0MPa and a flexural tensile strength of 3.55MPa after testing. After 25 freeze-thaw cycles, the compressive strength loss rate is 9%, and the mass loss rate is 2%. The water permeability coefficient is 0.51mm / s, the wear resistance (...

Embodiment 2

[0045] The specific dosage per cubic meter of raw materials used in this implementation is as follows: cement P.O42.5: 370kg; magnesite tailings 3-5mm: 412.5kg; 5-8mm: 1237.5kg; chlorite powder: 330kg; : 15kg; water reducer: 5.5kg; pigment: 4.5kg; water: 107.3kg.

[0046] The preparation method is the same as in Example 1.

[0047] The 28d compressive strength of the prepared colored flexible permeable concrete is 31.2MPa, the flexural tensile strength is 3.51MPa, the compressive strength loss rate is 13%, the mass loss rate is 4%, and the water permeability coefficient is 0.55 after 25 freeze-thaw cycles mm / s, wear resistance (grind pit length): 30mm, porosity: 13%.

Embodiment 3

[0054] A colored flexible permeable concrete consisting of the following components:

[0055] Cement P.O32.5R: 20Kg; Ordinary gravel 3~5mm: 15kg, 5~8mm: 15kg; Magnesite tailings 3~5mm: 12.5Kg, 5~8mm: 12.5Kg; Chlorite powder: 18Kg; Agent: 0.45Kg; Water reducer: 0.4Kg; Pigment: 0.20Kg; Water: 5.95Kg.

[0056] The preparation method is the same as in Example 1.

[0057] The 28d compressive strength of the prepared colored flexible permeable concrete is 24.6MPa, the flexural tensile strength is 2.5MPa, the compressive strength loss rate is 12% after 25 freeze-thaw cycles, the mass loss rate is 3.7%, and the water permeability coefficient is 0.56 mm / s, wear resistance (grind pit length): 32.4mm, porosity: 13%.

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Abstract

The invention aims at solving the technical problem that tailings cannot be reused, and provides colored flexible pervious concrete, a preparation method and application thereof, belonging to the technical field of materials for road use and decoration. The concrete is prepared from the following components in percentage by weight: 10-20wt% of cement, 55-67wt% of coarse aggregate, 10-18wt% of chlorite powder, 0.4-0.6wt% of a cementing agent, 0.2-0.4wt% of a water reducing agent, 0.15-0.20wt% of pigment and 4-7wt% of water. The concrete uses broken stones, magnesite tailings and chlorite iron tailings powder as aggregates of the concrete, thereby recovering a great deal of mineral resources, improving the utilization ratio of mineral resources and effectively relieving the ecological environment problems caused by tailings stockpile; the concrete can be used for solving the problems of hardening of urban land surfaces and restoration of vegetation, wet lands and rivulets by virtue of basic properties of the concrete such as high hardness and perviousness; and the concrete is favorable for conservation of moisture in soil and water.

Description

technical field [0001] The invention belongs to the technical field of road materials and decorative materials, and in particular relates to a colored flexible permeable concrete and its preparation method and application. Background technique [0002] With the rapid advancement of urbanization, waterlogging incidents occur frequently in cities around the world, causing serious injuries and losses to people's lives and property, and seriously affecting urban production and life. In the process of large-scale heavy rainfall, most cities suffered from waterlogging, causing serious disasters such as interruption of urban roads, traffic paralysis, flooded houses, and people trapped. In fact, "When it rains, it will flood, and the city looks at the sea" is a problem that most cities have been facing for a long time. Traditional cement pavement and asphalt pavement cannot store rainwater, but after using some ecological permeable materials, this situation will be completely chang...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04E01C11/22
CPCC04B28/04C04B2111/00284C04B2111/0075C04B2201/50E01C11/224C04B18/12C04B14/04C04B2103/445C04B2103/302C04B2103/54C04B22/002
Inventor 毕万利孙明晶祝日新李晶关岩尹延琪黄佳明
Owner 辽宁科大中驰镁建材科技有限公司
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