Water-permeable concrete cementing material and preparation method thereof

A technology of permeable concrete and cementitious material, applied in the field of concrete, can solve the problems of high price, insignificant reinforcement effect, poor alkali resistance, etc., and achieve the effect of increasing the water permeability coefficient, reducing the continuous porosity, and increasing the compressive strength.

Inactive Publication Date: 2018-10-19
湖南三恒建设园林工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, although the organic cementing agent has a better reinforcing effect, its price is higher and the durability of permeable concrete is caused by poor alkali resistance; although the inorganic cementing agent is lower in price and has better durability of permeable concrete, but its reinforcing effect not obvious

Method used

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Examples

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preparation example Construction

[0024] Further, the present invention also provides a method for preparing the above-mentioned permeable concrete binder, the method comprising the following steps:

[0025] (1) Stir and mix ordinary Portland cement, activated silica powder, epoxy resin, and stearate according to the ratio;

[0026] (2) Add flocculant, sodium gluconate and polycarboxylate superplasticizer to step (1) according to the ratio, and mix well.

[0027] The technical solutions of the present invention will be further described in detail below in conjunction with specific embodiments. The following examples are only to illustrate and explain the present invention, but should not be construed as limiting the protection scope of the present invention. All technologies realized based on the above contents of the present invention are covered within the scope of protection intended by the present invention.

Embodiment 1

[0032] Permeable concrete binder, including the following components: Ordinary Portland cement (P.O42.5) 50kg, activated silica powder (SiO 2 The content is 95%, the 28d activity index is above 102%, and the specific surface area is 17000~22000m 2 / kg) 10kg, bisphenol A type epoxy resin (type E42) 6 kg, sodium gluconate 5 kg, zinc stearate 4 kg, flocculant 3 kg (polyaluminum chloride 1kg, polyacrylamide 2kg) , Polycarboxylate superplasticizer 0.5kg.

Embodiment 2

[0034] Permeable concrete binder, including the following components: Ordinary Portland cement (P.O42.5R) 45kg, activated silica powder (SiO 2 The content is 94%, the 28d activity index is above 102%, and the specific surface area is 17000~22000m 2 / kg) 13kg, bisphenol A epoxy resin (model E55) 7 kg, sodium gluconate 3 kg, calcium stearate and zinc stearate in any ratio 5 kg, flocculant 2.7kg (polymeric sulfuric acid Iron 0.9kg, cellulose ether 1.8kg), polycarboxylate superplasticizer 1kg.

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Abstract

The invention belongs to the field of concrete and in particular discloses a water-permeable concrete cementing material and a preparation method thereof. A formula of the cementing material comprisesthe following components in parts by weight: 40 to 60 parts of ordinary portland cement, 10 to 25 parts of activated silicon dioxide powder, 5 to 8 parts of epoxy resin, 3 to 5 parts of sodium gluconate, 4 to 6 parts of stearate, 1 to 3 parts of a flocculating agent and 0.5 to 1.5 parts of a polycarboxylic acid water reducer. The formula of the cementing material, provided by the invention, is scientific and reasonable and all the components are complementary to each other, so that the wear resistance of water-permeable concrete can be improved, the continuous porosity is reduced, and the 3dcompression strength, 28d compression strength and water-permeable coefficient are remarkably improved.

Description

technical field [0001] The invention belongs to the field of concrete, and in particular relates to a permeable concrete cementitious material and a preparation method thereof. Background technique [0002] With the continuous development of urban modernization, the urban heat island effect is significant. High temperature accelerates photochemical reactions, aggravates air pollution, and damages human health. The city is covered by reinforced concrete, which has poor water and air permeability, resulting in poor breathability of the road surface and poor penetration of rainwater. The internal structure of the permeable concrete pavement is composed of a series of porous structures connected to the outside air. It has unique advantages in terms of environment, embodies the concept of "coexistence with the environment", and is also the main building material for the construction of "sponge city". At present, pervious concrete has the characteristics of weak bonding force be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2111/00284C04B2111/00637C04B2201/50C04B14/06C04B24/281C04B24/10C04B24/085C04B22/12C04B24/2652C04B2103/302C04B22/149C04B24/383C04B24/38
Inventor 卜方明
Owner 湖南三恒建设园林工程有限公司
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