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Pervious concrete and preparation method thereof

A technology of permeable concrete and cement, applied in the field of concrete, can solve the problems of low freeze-thaw resistance and easy cracking of permeable concrete, and achieve the effects of improving compression resistance, toughness and high permeability coefficient

Inactive Publication Date: 2022-01-04
福建省闽宏建材实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problems of low freeze-thaw resistance and easy cracking of permeable concrete, the application provides a permeable concrete and its preparation method

Method used

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  • Pervious concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0041] Modified coconut fiber in the application is prepared by the following method:

[0042] Wash 10kg coconut fiber with water;

[0043] Add 500L mass fraction of 5% NaOH solution and 500L mass fraction of 10% H to the washed coconut fiber 2 o 2 In the mixed solution, soak for 5h;

[0044] The soaked coconut fiber is heated up to 100°C, and heat-treated for 1h;

[0045] Wash the heat-treated coconut fiber to neutrality;

[0046] Dry the coconut fiber washed to neutral;

[0047] The dried coconut fiber is cut into coconut fiber with a length of 6mm-10mm to obtain the modified coconut fiber.

preparation example 2

[0049] The modified basalt fiber in this application is prepared by the following method:

[0050] The basalt of the weight shown in Table 1 is pulverized to obtain basalt gravel with a particle size of 5mm-20mm;

[0051] Mix basalt gravel with attapulgite and melt at a high temperature of 1500 to obtain molten liquid;

[0052] Draw the molten liquid, control the length of the basalt fiber to 6mm-10mm, and cool it to obtain the modified basalt fiber.

preparation example 3-5

[0054] The preparation method of the modified basalt fiber of Preparation Example 3-5 is the same as that of Preparation Example 2, the difference is that the dosage of each raw material is different, and the specific details are shown in Table 1.

[0055] The dosage of each raw material of the modified basalt fiber of table 1 preparation example 2-5 (unit: kg)

[0056] raw material Preparation example 2 Preparation example 3 Preparation Example 4 Preparation Example 5 Basalt 10 12 13 14 Attapulgite 2 3 4 5

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Abstract

The invention relates to the technical field of concrete, in particular to pervious concrete which is prepared from the following raw materials in parts by weight: 40-60 parts of water, 90-130 parts of cement, 450-550 parts of basalt, 70-90 parts of an admixture, 1.5-2.7 parts of a water reducing agent, 0.5-1.7 parts of an air entraining agent, 35-55 parts of epoxy resin, 8-28 parts of a curing agent, 8-20 parts of modified fibers and 8-12 parts of an epoxy silane coupling agent. The modified fiber comprises the following components in parts by weight: 5-13 parts of modified basalt fiber and 3-7 parts of plant fiber; the modified basalt fiber is formed by processing basalt and attapulgite according to the weight ratio of (10-14): (2-5). According to the invention, the pervious concrete has a good water permeability coefficient, and the compressive strength, the breaking strength and the freeze-thaw resistance frequency are also improved.

Description

technical field [0001] The invention relates to the technical field of concrete, more specifically, it relates to a permeable concrete and a preparation method thereof. Background technique [0002] Concrete is one of the main civil engineering materials. It is prepared in a certain proportion by cementitious materials, aggregates, water and, if necessary, admixtures and admixtures, and is uniformly stirred. With the progress of urban development, higher requirements are put forward for the performance of concrete. [0003] At present, concrete for urban roads needs to have good water permeability, assist the urban drainage system to drain water, quickly eliminate water accumulation on the road, make rainwater quickly seep into the ground, replenish groundwater, and maintain the ecological balance of groundwater and soil. However, pervious concrete has large particle gaps, poor cohesive force, low strength, low freeze-thaw resistance, and easy cracking. Contents of the in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B24/28
CPCC04B28/04C04B24/281C04B2111/00284C04B2201/50C04B2201/52C04B14/14C04B18/248C04B24/42C04B18/08C04B24/16C04B2103/302
Inventor 余金得何友立刘翔
Owner 福建省闽宏建材实业有限公司
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