Sponge pavement and preparation method thereof

A technology of sponge and concrete, applied in the direction of roads, roads, ceramic products, etc., can solve the problems of insufficient strength of permeable concrete, poor water permeability, surface photocatalyst catalytic efficiency and poor long-term performance, etc., to avoid the weakening of water permeability and mechanical properties , high water permeability and strong mechanical properties

Active Publication Date: 2019-01-15
禹智环保科技(深圳)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the impact of automobile exhaust on the environment and the problems existing in traditional concrete pavement, many research institutes at home and abroad are currently researching permeable concrete that can degrade automobile exhaust. However, there are still two common problems in this functional permeable concrete: (1) The catalytic efficiency and long-term performance of the photocatalyst on the concrete surface are poor; (2) The strength of the permeable concrete is insufficient or the water permeability is poor

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  • Sponge pavement and preparation method thereof
  • Sponge pavement and preparation method thereof
  • Sponge pavement and preparation method thereof

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preparation example Construction

[0023] Specifically, the preparation method of sponge pavement of the present invention comprises the following steps:

[0024] Step S1, preparing a water-permeable concrete base layer; the water-permeable concrete base layer can be formed into a firm water-permeable base layer by using conventional techniques such as portland cement and sandstone aggregates, or can be further improved by the method of the present invention to increase Structural strength.

[0025] Preferably, the permeable concrete base layer in step S1 is prepared by the following method:

[0026] First mix the aggregate with a particle size of 4-15mm, Portland cement with a strength grade of 42.5 and fibers with a length of 6-20mm, and add some water and water reducer during the mixing process;

[0027] Then add the silicate-titanium salt slurry and stir again to form the permeable concrete base layer;

[0028] Wherein, the preparation method of described silicate-titanium salt slurry is:

[0029] Using ...

Embodiment 1

[0058] Such as figure 1 , 2 Shown, the preparation process and formula of the sponge pavement of the present embodiment are as follows:

[0059] The first step is to prepare the base layer of permeable concrete 3

[0060] At room temperature, first mix the basalt crushed stone aggregate with Portland cement with a strength grade of 42.5 and glass fiber, and gradually add water and HG-FDN water reducer during the stirring process. Then add silicate-titanium salt slurry composed of sodium silicate and titanium nitrate, and then fully stir to form a permeable concrete base layer 3 .

[0061] The silicate-titanium salt slurry is prepared by using titanium nitrate as a titanium dioxide precursor, sodium hexametaphosphate as a dispersant, and sodium silicate as a silicate, and is formed by adding water and stirring.

[0062] The mass fractions of various raw materials for preparing the permeable concrete base layer 3 are: Portland cement 16.54%, basalt gravel 73.32%, HG-FDN type ...

Embodiment 2

[0068] Such as figure 1 , 2 Shown, the preparation process and formula of the sponge pavement of the present embodiment are as follows:

[0069] The first step is to prepare the base layer of permeable concrete 3

[0070] At room temperature, first mix the granite crushed stone aggregate with Portland cement with a strength grade of 42.5 and glass fiber, and gradually add water and ordinary water reducer during the stirring process. Then add the silicate-titanium salt slurry composed of sodium metasilicate and titanium sulfate, and then fully stir to form the permeable concrete base layer 3 .

[0071] The silicate-titanium salt slurry is prepared by using titanium sulfate as a titanium dioxide precursor, sodium hexametaphosphate as a dispersant, and sodium metasilicate as a silicate, and is formed by adding water and stirring.

[0072] The mass fractions of various raw materials for preparing the permeable concrete base layer 3 are: 15.47% of Portland cement, 76.72% of gran...

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Abstract

A sponge pavement and a preparation method thereof are provided, wherein the preparation method comprises the following steps: preparing a permeable concrete base layer; preparing a high-porosity titanium cement layer on the water-permeable concrete base layer, wherein the method for preparing the titanium cement comprises adding phosphate and dispersant to titanium salt aqueous solution, adding Portland cement, stirring, adding foaming agent and foam stabilizer after forming slurry, and fully stirring to form the titanium cement layer with high porosity on the base layer of the water-permeable concrete; forming a photocatalyst spraying layer of titanium dioxide on the titanium cement layer with high porosity. The preparation method of the sponge pavement overcomes the shortcomings of poormechanical properties of the permeable concrete and the shortcomings of the prior photocatalyst such as low photocatalytic degradation efficiency of VOC and NOx, short lasting time, etc., improves the retention amount and depth of the photocatalyst spraying, and obviously improves the long-term efficiency of the photocatalyst catalysis effect.

Description

technical field [0001] The invention relates to the technical field of road construction, in particular to a sponge pavement and a preparation method thereof. Background technique [0002] With the development of social economy and the improvement of people's living standards, the number of cars has increased year by year, and a large amount of ground is gradually covered by buildings and concrete roads. The growth of automobile ownership also brings a large amount of automobile exhaust emissions, in which automobile exhaust contains a large amount of harmful organic volatile compounds (VOC), NO x , these harmful gases bring greater harm to urban residents, road users, transportation management and maintenance personnel, and animals and plants along the road, causing damage to the traffic ecological environment, directly affecting the health of the crowd and the quality of the living environment. [0003] A large amount of the ground is covered by buildings and concrete pav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/00C04B28/04C04B38/02C04B41/85C04B111/40
CPCC04B28/04C04B38/02C04B41/5072C04B41/85C04B2111/00284C04B2111/40E01C7/00C04B14/14C04B14/42C04B2103/302C04B22/00C04B22/085C04B22/16C04B14/06C04B14/048C04B2103/48C04B2103/408C04B22/142
Inventor 董鹏飞黄静柯
Owner 禹智环保科技(深圳)有限公司
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