Unlock instant, AI-driven research and patent intelligence for your innovation.

Environment-friendly paving brick and preparation method thereof

A kind of paving bricks, environmental protection technology, applied in the direction of roads, roads, pavements paved with prefabricated blocks, etc., can solve the problems of reduced photocatalytic efficiency, poor effect, small specific surface area of ​​functional layer, etc., to improve photocatalytic efficiency, The effect of saving photocatalytic materials and improving photocatalytic efficiency

Pending Publication Date: 2022-03-01
HOHAI UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although significant progress has been made in improving automobile manufacturing technology and reducing the content of harmful substances in exhaust gas, as the number of automobiles continues to increase, the total amount of harmful gases emitted by automobiles is still huge
At present, the control of air pollutants is mainly based on passive prevention, which is not only ineffective, but also seriously affects economic and social development.
[0003] Nanophotocatalysts (TiO 2 ) combined with concrete to purify the air through a concrete pavement with photocatalytic performance, but the surface of the functional layer containing photocatalyst in the environmental protection paving bricks prepared by existing photocatalytic concrete materials is flat, and the functional layer is tiled on the base , there are disadvantages such as wasting photocatalytic materials, the specific surface area of ​​the functional layer is small, the surface of the functional layer is not easy to clean, and the dust or garbage on the surface of the functional layer will block the light and significantly reduce the photocatalytic efficiency.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Environment-friendly paving brick and preparation method thereof
  • Environment-friendly paving brick and preparation method thereof
  • Environment-friendly paving brick and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Produce environment-friendly paving bricks according to the ratio in Table 1. The shape of the functional unit is hemispherical, the contact surface area between the functional layer and the base layer accounts for 1 / 3 of the upper surface area of ​​the base layer, the height of the functional layer is 5mm, and the height of the base layer is 50mm. Compressive strength and NO under visible light x The determination method of the removal efficiency of is well known in the art.

[0057] Table 1 Proportion and performance test results of environmentally friendly paving bricks

[0058]

[0059] Note: In Table 1, fly ash (%): refers to fly ash as wt% of cement mass; recycled aggregate (%): refers to the aggregate as aggregate wt%; recycled glass aggregate (%) : means that the aggregate is the wt% of the total amount of aggregate; g-C 3 N 4 / Ag / MoS 2 (%): expressed as wt% of cement mass. The meanings of recycled aggregate (%) and recycled glass aggregate (%) in the f...

Embodiment 2

[0063] According to the ratio in Table 2, the environmentally friendly paving bricks are produced. The shape of the functional unit is semi-cylindrical. The contact surface area between the functional layer and the base layer accounts for 1 / 4 of the upper surface area of ​​the base layer. The height of the functional layer is 4mm, and the height of the base layer is 40mm. And measure the compressive strength and NO under visible light x removal efficiency.

[0064] Table 2 Proportion and performance test results of environmentally friendly paving bricks

[0065]

[0066] Among them, in the proportion of the base layer, the particle size of the recycled aggregate and the recycled glass aggregate is less than 10mm. In the ratio of the functional layer, the particle size of recycled aggregate and recycled glass aggregate is less than 5mm.

[0067] From the listed proportioning of table 2 and the characteristics of the manufactured environmental protection paving bricks, it c...

Embodiment 3

[0069] According to the ratio of Table 3 to produce environmentally friendly paving bricks, according to the ratio of Table 2 to produce environmentally friendly paving bricks, the shape of the functional unit is semi-cylindrical, and the contact surface area between the functional layer and the base layer accounts for 1 / 3 of the upper surface area of ​​the base layer. The layer height is 6mm, and the base layer height is 50mm. And measure the compressive strength and NO under visible light x removal efficiency.

[0070] Table 3 Proportion and performance test results of environmentally friendly paving bricks

[0071]

[0072] Among them, in the functional layer ratio of No. 1 and No. 3, the particle size of the recycled aggregate is less than 2.36mm, and the particle size of the recycled glass aggregate is less than 5mm. In the functional layer ratio of No. 1 and No. 3, the particle size of the recycled aggregate is less than 5mm, and the particle size of the recycled gl...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Heightaaaaaaaaaa
Particle sizeaaaaaaaaaa
Strengthaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of building materials, and particularly relates to an environment-friendly paving brick and a preparation method thereof. The environment-friendly paving brick comprises a functional layer and a base layer, the functional layer is prepared from concrete containing a photocatalytic material; the base layer is prepared from concrete I; the functional layer is arranged on the upper surface of the base layer and comprises a plurality of functional units, and the upper surfaces of the functional units are uneven. The invention has the advantages of photocatalytic material saving, skid resistance, large specific surface area of the functional layer, high cleanliness of the functional layer and high photocatalytic efficiency.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to an environment-friendly paving brick and a preparation method thereof. Background technique [0002] Nitrogen oxides (NO x ) is one of the important pollutants in industrial waste gas and automobile exhaust, and plays a key role in urban air pollution. Although significant progress has been made in improving automobile manufacturing technology and reducing the content of harmful substances in exhaust gas, as the number of automobiles continues to increase, the total amount of harmful gases emitted by automobiles is still huge. At present, the control of air pollutants is mainly based on passive prevention, which not only has poor results, but also seriously affects economic and social development. [0003] Nanophotocatalysts (TiO 2 ) combined with concrete to purify the air through the concrete pavement with photocatalytic performance, but the surface of...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): E01C5/06C04B28/04C04B28/08C04B18/02C04B111/20C04B14/34C04B14/36C04B14/32
CPCE01C5/065C04B28/04C04B28/08C04B18/02C04B2111/00612C04B2111/2061C04B18/08C04B14/02C04B14/06C04B18/16C04B14/22C04B14/34C04B14/36C04B14/325
Inventor 郭明志宋子健储洪强蒋林华顾越
Owner HOHAI UNIV