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Permeable concrete and preparation technology and laying technology thereof

A technology of permeable concrete and preparation process, which is applied in the field of concrete, and can solve the problems of low structural strength and large application limitations of permeable concrete, and achieve the effects of improving water permeability, reducing clogging, and enhancing structural strength

Inactive Publication Date: 2018-08-28
四川通德商品混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, because pervious concrete has a porous structure, the structural strength of pervious concrete is relatively low, and it can only be used on light-loaded pavement, and its use is limited.

Method used

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  • Permeable concrete and preparation technology and laying technology thereof
  • Permeable concrete and preparation technology and laying technology thereof
  • Permeable concrete and preparation technology and laying technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A permeable concrete such as figure 1 As shown, it includes a base layer 1 and a surface protection layer 2 disposed above the base layer 1 .

[0045] The base layer 1 includes water, cement, fly ash, gravel, white clay, polyacrylonitrile-based carbon fiber, kaolin, and special admixtures for permeable concrete.

[0046] The special admixture for permeable concrete includes the following components in parts by weight: calcium sulfoaluminate, cement, activated alumina, water reducing agent, hydrosol, slump retaining agent, water retaining agent, defoaming agent;

[0047] Binders include polyamide resin, absolute ethanol, silane coupling agent, phenolic accelerator and 2,4-di-tert-butylphenol;

[0048] As the water reducer, choose β-cyclodextrin polycarboxylate water reducer or shrinkage type polycarboxylate water reducer.

[0049](1) The synthetic method of β-cyclodextrin polycarboxylate superplasticizer is: TPEG (111.3g, 46.4mmol) and MA-β-CD (19.2g, 14.5mmol) are pla...

Embodiment 9

[0066] A preparation process of permeable concrete, comprising the following preparation steps:

[0067] S1: The preparation process of base layer 1:

[0068] Pour 10-20 parts of water into the mixer to wet the mixer;

[0069] Pour gravel and polyacrylonitrile-based carbon fiber into the mixer and mix evenly;

[0070] Add the remaining water and stir well;

[0071] Add cement, fly ash, clay, kaolin and special admixtures for permeable concrete to the mixer, and add dry ice to the mixer, and stir evenly;

[0072] S2: The preparation process of the surface protection layer 2:

[0073] The modified fly ash, fly ash ceramsite, bis-[γ-(triethoxysilicon) propyl]tetrasulfide, lotus leaf hydrophobic agent, ethylene-propylene rubber, glass powder, EVA and carbon nanotubes were sequentially Add to water and stir well.

Embodiment 10

[0075] A pavement process of permeable concrete, comprising the following pavement process:

[0076] Step 1: Transport the prepared base layer 1 to the paving site;

[0077] Step 2: Complete the vertical formwork production before paving; complete the watering and wetting of the construction surface, vertical formwork and other places in contact with the concrete pavement before paving; the paving coefficient is 1.1 to 1.25; use construction machinery to level, compact, and wipe flat;

[0078] Step 3: Evenly pave the surface protection layer 2 on the surface of the base layer 1 under the condition that the base layer 1 is semi-dry.

[0079] Test detection

[0080] 1. Test the mechanical properties of concrete according to GB / T 50081-2002 "Standard for Experimental Methods of Mechanical Properties of Ordinary Concrete";

[0081] 2. Test the mechanical properties of concrete according to GB / T 50080-2002 "Standard for Experimental Methods of Properties of Ordinary Concrete Mix...

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Abstract

The invention discloses permeable concrete and a preparation technology and laying technology thereof. The concrete is characterized by comprising a base layer and a surface layer protection layer arranged on the base layer, the base layer is prepared from, by weight, 140-160 parts of water, 360-390 parts of cement, 20-30 parts of fly ash, 1,600-1,900 parts of gravel, 5-10 parts of white earth, 1-2 parts of polyacrylonitrile-based carbon fiber, 1-2 parts of kaolin and 6-12 parts of additive special for the permeable concrete. The permeable concrete comprises the base layer and the surface layer protection layer, the base layer has the good structural strength, and by means of the surface layer protection layer, on one hand, the wear-resisting property of materials can be enhanced; on the other hand, partial impurities can be blocked to enter the base layer, and the phenomenon that cleaning is difficult due to the fact that holes of the base layer are blocked is reduced; the fly ash added in the base layer can enhance the structural strength of the base layer; by adding the white earth, on one hand, partial matter can be decomposed, and on the other hand, the strength of the base layer is enhanced; the polyacrylonitrile-based carbon fiber can also enhance the structural strength of the base layer.

Description

technical field [0001] The invention relates to the field of concrete, in particular to a permeable concrete and its preparation process and paving process. Background technique [0002] With the advancement of urbanization, large areas of impermeable materials are used in urban construction, causing serious harm to the living environment, such as heat island effect, urban waterlogging, shortage of groundwater resources, land subsidence and surface runoff pollution. [0003] Permeable concrete is an ecological and environmentally friendly concrete, which can effectively alleviate the adverse impact of traditional impermeable pavement on the environment. Permeable concrete belongs to the skeletal pore structure, relying on the internal friction resistance of aggregates and the cohesive force of cementitious materials to form a certain strength. Since there is no fine aggregate to fill the pores between coarse aggregates, more pores are formed. Good water permeability. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/04C04B28/02E01C7/14E01C11/22C08F283/06C08F251/00C08F220/06C08F228/02
CPCC04B26/045C04B28/02C04B2111/00284C04B2111/0075C04B2201/50C08F228/02C08F251/00C08F283/065E01C7/142E01C11/226C04B18/08C04B14/02C04B14/104C04B14/386C04B14/106C04B22/142C04B2103/302C04B14/303C04B2103/308C04B2103/465C04B2103/50C04B26/20C04B24/026C04B24/42C04B24/02C04B18/023C04B14/22C04B2103/65C04B14/026C04B24/26C08F220/06
Inventor 宋勇波
Owner 四川通德商品混凝土有限公司
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