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Environment-friendly pervious concrete and preparation method thereof

A permeable concrete, environmental protection technology, applied in the field of concrete materials, can solve the problems of long rigid polypropylene fiber, affecting the stability of concrete, affecting the compatibility of cement, etc., to enhance compatibility, avoid comprehensive performance and performance Poor stability and good water permeability

Active Publication Date: 2022-03-15
丽江林润混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the length of the steel polypropylene fiber is relatively long, which affects the compatibility with cement, and the longer the steel fiber is, the easier it is to form an unstable pore structure, which affects the stability of the concrete.

Method used

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  • Environment-friendly pervious concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] An environment-friendly permeable concrete, characterized in that it is made from the following raw materials in parts by weight: 15 parts of cement, 60 parts of coarse aggregate, 5 parts of hydrophilic nitrogen-doped carbon nanofiber dense network, waste porous ceramsite 10 parts, 1 part of alkoxy-modified 2,2-bis(3-amino-4-hydroxyphenyl) hexafluoropropane, 1 part of fluorenylsulfonate water reducer, 8 parts of water.

[0031] The coarse aggregate is crushed stone; the particle size of the coarse aggregate is 5 mm; the specification of the waste porous ceramsite is K1, provided by Guangzhou Institute of Energy Research, Chinese Academy of Sciences.

[0032] The preparation method of the alkoxy-modified 2,2-bis(3-amino-4-hydroxyphenyl)hexafluoropropane comprises: silane coupling agent KH-560, 2,2-bis(3-amino -4-Hydroxyphenyl)hexafluoropropane was added to the organic solvent, stirred and reacted at 70°C for 4 hours, and then the solvent was removed by rotary evaporation...

Embodiment 2

[0036] An environmentally friendly permeable concrete, characterized in that it is made from the following raw materials in parts by weight: 17 parts of cement, 65 parts of coarse aggregate, 6 parts of hydrophilic nitrogen-doped carbon nanofiber dense network, waste porous ceramsite 12 parts, 1.5 parts of alkoxy-modified 2,2-bis(3-amino-4-hydroxyphenyl) hexafluoropropane, 1.2 parts of fluorenylsulfonate water reducer, and 10 parts of water.

[0037] The coarse aggregate is crushed pebbles; the particle size of the coarse aggregate is 7mm; the specification of the waste porous ceramsite is K2, which is provided by the Guangzhou Energy Research Institute of the Chinese Academy of Sciences.

[0038] The preparation method of the alkoxy-modified 2,2-bis(3-amino-4-hydroxyphenyl)hexafluoropropane comprises: silane coupling agent KH-560, 2,2-bis(3-amino -4-Hydroxyphenyl)hexafluoropropane was added to the organic solvent, stirred and reacted at 73°C for 4.5 hours, and then the solvent...

Embodiment 3

[0042] An environmentally friendly permeable concrete is characterized in that it is made of the following raw materials in parts by weight: 17 parts of cement, 70 parts of coarse aggregate, 8 parts of hydrophilic nitrogen-doped carbon nanofiber dense network, waste porous ceramsite 15 parts, 2 parts of alkoxy-modified 2,2-bis(3-amino-4-hydroxyphenyl) hexafluoropropane, 1.5 parts of fluorenylsulfonate water reducer, and 11 parts of water.

[0043] The coarse aggregate is regenerated construction waste material; the regenerated construction waste material is sorted waste concrete; the particle size of the coarse aggregate is 8 mm. The specification of the waste porous ceramsite is K3, provided by Guangzhou Institute of Energy Research, Chinese Academy of Sciences.

[0044] The preparation method of the alkoxy-modified 2,2-bis(3-amino-4-hydroxyphenyl)hexafluoropropane comprises: silane coupling agent KH-560, 2,2-bis(3-amino -4-Hydroxyphenyl)hexafluoropropane was added to the or...

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Abstract

The invention discloses environment-friendly water-permeable concrete which is characterized by being prepared from the following raw materials in parts by weight: 15-20 parts of cement, 60-80 parts of coarse aggregate, 5-10 parts of hydrophilic nitrogen-doped carbon nanofiber compact network, 10-20 parts of waste porous ceramsite, 10-20 parts of alkoxy modified 2, 4-dihydroxy-N-methyl-N-methyl-N-methyl-N-methyl-N-methyl-N-methyl-N-methyl-N-methyl-N-methyl-N-methyl-N-methyl-N-methyl-N-methyl-N 1 to 3 parts of 1, 2-bis (3-amino-4-hydroxyphenyl) hexafluoropropane, 1 to 2 parts of fluorenyl sulfonate water reducing agent, and 8 to 13 parts of water. The invention further discloses a preparation method of the environment-friendly pervious concrete. The environment-friendly pervious concrete disclosed by the invention is good in environmental protection property, good in pervious effect, high in mechanical strength and excellent in freeze-thaw resistance.

Description

technical field [0001] The invention relates to the technical field of concrete materials, in particular to an environment-friendly permeable concrete and a preparation method thereof. Background technique [0002] With the global urbanization process, especially the development of my country's urbanization construction, the surface of the earth is gradually hardened and covered by water-blocking materials such as buildings and concrete, forming an ecological "artificial desert". It is in this situation that pervious concrete emerges as the times require, and its appearance has aroused widespread concern in the industry. Permeable concrete is a lightweight porous concrete made of coarse aggregate, cement and water. It does not contain fine aggregate. The surface of the coarse aggregate particles is covered with a thin layer of cement slurry. The aggregate particles are in contact with each other. Bonding to form a honeycomb structure with uniform distribution of pores, whic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B14/38C04B18/02C04B24/12C04B24/16
CPCC04B28/04C04B14/386C04B18/027C04B24/12C04B24/16C04B2111/00284C04B2201/50C04B2111/00017C04B14/02C04B18/167Y02W30/91
Inventor 蒋雨炎邹魁
Owner 丽江林润混凝土有限公司
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