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

Porous bonding layer as well as construction method and application thereof

A construction method and adhesive layer technology, which can be applied to cohesive pavement paved on site, roads, roads, etc., can solve the problem of airtight adhesive layer and achieve the effect of protecting the environment and saving resources

Inactive Publication Date: 2012-11-14
SOUTH CHINA UNIV OF TECH
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem to be solved by the present invention is to solve the problem of the airtightness of the bonding layer in the prior art, and the key is the selection of the pore-making process and material of the bonding layer

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] On a cement concrete bridge deck of an expressway, the multi-porous bonding layer of the present invention has been implemented.

[0027] First, remove laitance, dust and other debris on the cement concrete surface of the bridge deck. The JT-C50 wall surface moisture meter produced by Jingtai Instrument Co., Ltd., Xinghua City, Jiangsu Province was used to measure the moisture content of concrete, and the average value was 20%. Referring to the ASTM D 4263 standard, the plastic film method was used to observe the moisture content of the concrete surface. Put a 45cm×45cm plastic film flat on the concrete surface, and seal the four sides with adhesive tape for 16 hours, and a lot of water drops appeared under the film.

[0028] (1) Spread 1kg / m evenly on the clean concrete surface 2 pore-forming aggregate;

[0029] (2) Use intelligent asphalt distributor to evenly spray 2.0kg / m 2 Hot-melted modified asphalt; immediately spread 8kg / m evenly between the pore-forming agg...

Embodiment 2

[0036] On the same bridge deck as in Example 1, a porous adhesive layer of the present invention was implemented.

[0037] (1) Spread 2kg / m evenly on the clean concrete surface 2 pore-forming aggregate;

[0038] (2) Then, use an intelligent asphalt distributor to evenly spray asphalt with a content of 1.6kg / m 2 modified emulsified asphalt; immediately spread 6kg / m evenly between the pore-forming aggregates 2 the main aggregate;

[0039] (3) Roll it twice with a tire roller with a total mass of 15t until the pore-forming aggregate is crushed. The modified emulsified asphalt is demulsified, and the crushed aggregate is removed, and the construction of the bonding layer is completed.

[0040] Among them, the technical performance of the modified emulsified asphalt used as the binder meets the "Technical Specifications for Highway Asphalt Pavement Construction" (JTG F40-2004) "Table 4.7.1-2 Technical Requirements for Modified Emulsified Asphalt".

[0041] The main aggregate i...

Embodiment 3

[0045] On the same bridge deck as in Example 1, a porous adhesive layer of the present invention was implemented.

[0046] (1) Spread 2kg / m evenly on the clean concrete surface 2 pore-forming aggregate;

[0047] (2) Then, use an intelligent asphalt distributor to evenly spray asphalt with a content of 2.0kg / m 2 emulsified asphalt; immediately spread 6kg / m evenly between the pore-forming aggregates 2 the main aggregate;

[0048] (3) Roll it twice with a tire roller with a total mass of 15t until the pore-forming aggregate is crushed. After the emulsified asphalt is demulsified and the crushed aggregate is removed, the construction of the bonding layer is completed.

[0049] Among them, emulsified asphalt is used as the binder, and its technical performance meets the "Technical Specifications for Road Asphalt Pavement Construction" (JTG F40-2004) "Table 4.3.2 Technical Requirements for Emulsified Asphalt for Roads".

[0050] The main aggregate is clean and hard limestone gr...

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
thicknessaaaaaaaaaa
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a porous bonding layer. The porous bonding layer per 1 m2 basically comprises the following components: a bonder with an asphalt content of 1.6-2kg, 6-8kg of main aggregates and 1-2kg of pore-making aggregates, wherein the bonder is used for bonding the main aggregates and the pore-making aggregates. According to the porous bonding layer disclosed by the invention, a water vapor discharge channel is reserved, so that moisture in bridge floor concrete is heated to become water vapor in the construction or using process, and the water vapor is discharged by vaporizing through pores in the bonding layer and an asphalt paving layer. Therefore, the porous bonding layer has the advantages that bulges generated in the bonding layer due to the water vapor are prevented, separation between the asphalt paving layer and a cement concrete bridge floor is avoided, and diseases of displacement, cracking and the like generated on the asphalt paving layer under the action of traffic load are avoided.

Description

technical field [0001] The invention relates to a formulation of a road pavement material and a construction method thereof. In particular, an adhesive layer and its construction method and application. Background technique [0002] The bonding layer between the cement concrete bridge deck and the asphalt pavement specified in the existing "Technical Specifications for Highway Asphalt Pavement Construction" (JTG F40-2004) often uses "modified asphalt sprayed with hot asphalt, hot-melt or solvent-diluted, Modified emulsified asphalt, and then spread a layer of stone chip protective layer" construction technology. Article 10.4.4 of this code stipulates: "The paving of the bridge deck must ensure that the concrete is completely dry. It is strictly forbidden to lay waterproof adhesive layers and pave asphalt mixture under wet conditions to prevent the moisture in the concrete from encountering during construction or use. The heat turns into water vapor, causing the waterproof ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/18
Inventor 葛折圣
Owner SOUTH CHINA UNIV OF TECH