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A kind of permeable concrete and preparation method thereof

A permeable concrete and mixture technology, applied in the field of concrete, can solve problems such as easy to block the lower pores, affect the permeable performance, hinder the permeable pores, etc., achieve the effects of reducing clogging, enhancing the permeable effect, and reducing the retention time

Inactive Publication Date: 2020-10-30
深圳市振惠建混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After using the present invention, the viscosity and water retention of the cement paste can be significantly improved, the encapsulation of the cement paste on the pebble surface and the bonding performance with the pebble surface can be increased, so that the pebble-type permeable concrete mixture has good cohesion , water retention and homogeneity, solve the problem of poor grouting on the surface of pebble-type permeable concrete coarse aggregate, but the compound additives improve the cohesiveness of pebbles and also hinder the permeable pores, which is very easy to sink when the slurry flows Block the lower pores and affect the water permeability

Method used

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  • A kind of permeable concrete and preparation method thereof
  • A kind of permeable concrete and preparation method thereof

Examples

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Effect test

Embodiment 1

[0032] First disperse 0.5kg of white carbon black and 0.6kg of nano-titanium dioxide in 5 parts of water to obtain the first suspension, then dissolve 0.01kg of hydrophobically modified polyacrylamide in 10 parts of water to obtain a hydrophobically modified polyacrylamide solution. The above-mentioned first suspension and the above-mentioned hydrophobically modified polyacrylamide solution were uniformly mixed to obtain a second suspension, and then 0.2 kg of lotus leaf hydrophobic agent, 1 kg of silicone emulsion and 0.6 kg of fluorine-containing acrylic acid emulsion were added to the above-mentioned second suspension, Mix well to obtain the first mixture.

[0033] Take 40kg of recycled coarse aggregate, 80kg of gravel, 40kg of cement, 1kg of hydroxypropyl methylcellulose and 0.3kg of triethanolamine and mix them uniformly to obtain the second mixture. Among them, the particle size of recycled coarse aggregate and crushed stone is 7 (± 1) mm.

[0034] The above-mentioned f...

Embodiment 2

[0036] Except that binding agent selects polyethylene oxide for use, and early strength agent selects sodium formate for use, and the consumption of each component is different from Example 1, and all the other operations are all the same as Example 1. The components and their amounts are shown in Table 1.

Embodiment 3

[0038] Except that sodium formate is selected as the early strength agent, and the dosage of each component is different from that of Example 1, the rest of the operations are the same as in Example 1. The components and their amounts are shown in Table 1.

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Abstract

The invention relates to pervious concrete and a preparation method thereof, and relates to the technical field of concrete. The pervious concrete is prepared from water, hydrophobic modified polyacrylamide, a lotus leaf hydrophobic agent, coarse aggregate, cement, adhesives, an early strength agent, nanometer titania, organic silicon emulsion and fluorine-containing acrylic emulsion. Due to the lotus leaf hydrophobic agent, retention of water in holes inside the pervious concrete is lowered, and therefore the pervious effect of the pervious concrete is enhanced; due to cooperation of the early strength agent, the adhesives and the hydrophobic modified polyacrylamide, sinking of cement slurry in the pervious concrete forming process is lowered, and plugging of the holes caused by the cement slurry is lowered; due to hydration heat generated in the concrete curing process, curing of the organic silicon emulsion and the fluorine-containing acrylic emulsion is facilitated, and the adverseeffect caused by the hydration heat on concrete is lowered.

Description

technical field [0001] The present invention relates to a kind of concrete, more specifically, it relates to a kind of permeable concrete and its preparation method. Background technique [0002] With the development of social economy and the process of urban construction, the surface of the modern city is gradually covered by reinforced concrete buildings and impervious roads. Compared with the natural soil, the modern surface brings a series of problems to the city. The main manifestations are as follows: the impermeable road surface hinders the infiltration of rainwater, which blocks the replenishment of groundwater by rainwater, and the excessive extraction of groundwater makes the urban ground prone to subsidence. On the traditional dense road surface, tire noise is loud. Traditional urban roads are impermeable structures, rainwater is drained through the road surface, and the drainage capacity is limited. When there is heavy rain or heavy rain, rainwater is easy to co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B38/00
CPCC04B28/04C04B2111/00284C04B2111/0075C04B2201/50C04B14/02C04B14/06C04B14/305C04B18/16C04B20/008C04B24/122C04B24/2652C04B24/2682C04B24/383C04B24/42C04B2103/65C04B38/0041C04B38/0074C04B24/04C04B24/281
Inventor 刘家坤
Owner 深圳市振惠建混凝土有限公司
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