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A Crack-resistant and Anti-scouring Cement Pavement Composite Structure

A technology of cement pavement and composite structure, which is applied to the coagulation pavement, roads, roads and other directions of on-site paving, can solve the problems of reflection cracks, poor anti-crack and anti-scour performance, and road structures cannot be transported, so as to delay reflection cracks. , The effect of excellent resistance to water erosion

Active Publication Date: 2021-08-24
JIANGSU ZENGGUANG COMPOSITE MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although my country's cement pavement structure has a history of decades of development, its design method is basically established on the basis of a series of research results in the 1970s, 1980s and early 1990s, influenced by the technological level at that time. Restrictions, relying on low-grade roads, small loads of traffic vehicles, slow running speed, and backward construction technology
[0003] With the rapid development of the national economy and the growth of material flow, the demand for road transportation is also increasing. The general road structure cannot be transported better. Some road structures have poor performance and will be damaged after a certain period of use. The situation is very serious, and it is relatively complicated to repair, which is not conducive to saving construction costs and affects normal road transportation
The existing cement pavement structure has poor anti-crack and anti-scour performance, making it easy for road surface water to penetrate into the base layer, resulting in reflection cracks. Therefore, a pavement structure with improved anti-scour and anti-crack performance is needed

Method used

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  • A Crack-resistant and Anti-scouring Cement Pavement Composite Structure
  • A Crack-resistant and Anti-scouring Cement Pavement Composite Structure
  • A Crack-resistant and Anti-scouring Cement Pavement Composite Structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A cement pavement composite structure with anti-crack and anti-scour, which comprises cushion layer, lower base, upper base, anti-crack and anti-scour layer and cement concrete surface course from bottom to top; the anti-crack and anti-scour layer includes lower bearing layer, transition layer and upper surface.

[0047] The lower bearing layer includes the following materials by weight:

[0048]

[0049] The particle size of the crushed stone is 5-10mm, and the coverage rate is 60%; the stabilizer includes 70wt% epoxy butyl stearate and 30wt% pentaerythritol.

[0050] The transition layer includes the following materials by weight:

[0051]

[0052]

[0053] The thickener includes 60wt% xanthan gum and 40wt% polyethylene oxide; the number average molecular weight of the ethylene-tetrafluoroethylene-hexafluoropropylene copolymer is 4800.

[0054] The upper surface layer includes the following materials by weight:

[0055]

Embodiment 2

[0057] A cement pavement composite structure with anti-crack and anti-scour, which comprises cushion layer, lower base, upper base, anti-crack and anti-scour layer and cement concrete surface course from bottom to top; the anti-crack and anti-scour layer includes lower bearing layer, transition layer and upper surface;

[0058] The lower bearing layer includes the following materials by weight:

[0059]

[0060] The particle size of the crushed stone is 5-10mm, and the coverage rate is 60-80%. The stabilizer includes 72wt% epoxy butyl stearate and 28wt% pentaerythritol.

[0061] The transition layer includes the following materials by weight:

[0062]

[0063] The thickener includes 70wt% xanthan gum and 30wt% polyethylene oxide; the number average molecular weight of the ethylene-tetrafluoroethylene-hexafluoropropylene copolymer is 5000.

[0064] The upper surface layer includes the following materials by weight:

[0065]

Embodiment 3

[0067] A cement pavement composite structure with anti-crack and anti-scour, which comprises cushion layer, lower base, upper base, anti-crack and anti-scour layer and cement concrete surface course from bottom to top; the anti-crack and anti-scour layer includes lower bearing layer, transition layer and upper surface;

[0068] The lower bearing layer includes the following materials by weight:

[0069]

[0070] The particle size of the crushed stone is 5-10mm, and the coverage rate is 80%; the stabilizer includes 75wt% epoxy butyl stearate and 25wt% pentaerythritol;

[0071] The transition layer includes the following materials by weight:

[0072]

[0073] The thickener includes 76wt% xanthan gum and 24wt% polyethylene oxide; the number average molecular weight of ethylene-tetrafluoroethylene-hexafluoropropylene copolymer is 5200.

[0074] The upper surface layer includes the following materials by weight:

[0075]

[0076]

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Abstract

The invention discloses a crack-resistant and anti-scour cement pavement composite structure, which comprises a cushion layer, a lower base layer, an upper base layer, a crack-resistant and anti-scour layer and a cement concrete surface layer in sequence from bottom to top. The anti-crack and anti-scour cement pavement composite structure of the present invention improves the internal structure of the emulsified asphalt on a microscopic level by optimizing its chemical composition, and has excellent water-scour resistance, anti-penetration performance and anti-skid performance. and anti-crack performance, the cement pavement composite structure of the present invention can prevent the penetration of surface water into the base layer, buffer stress, delay the generation of reflection cracks and realize the limited sliding of the cement concrete pavement on the multi-efficiency connecting layer.

Description

technical field [0001] The invention relates to a pavement structure, in particular to a crack-resistant and scour-resistant cement pavement composite structure. Background technique [0002] After more than 20 years of highway construction, the mileage of my country's secondary and above highways has reached 425,000 kilometers, of which more than 65,000 kilometers are expressways. Although my country's cement pavement structure has a history of decades of development, its design method is basically established on the basis of a series of research results in the 1970s, 1980s and early 1990s, influenced by the technological level at that time. Restrictions, relying on low-grade roads, small loads of traffic vehicles, slow running speed, and backward construction technology. [0003] With the rapid development of the national economy and the growth of material flow, the demand for road transportation is also increasing. The general road structure cannot be transported better. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C7/14C08L95/00C08L53/02C08L27/18C08L23/08C08L27/16C08L63/00C08L83/07C08K3/34
CPCC08K2201/014C08L95/00C08L2205/03C08L2205/035E01C7/14E01C7/142C08L53/02C08L27/18C08K3/34C08L23/0892C08L27/16C08L63/00C08L83/04
Inventor 周庆月
Owner JIANGSU ZENGGUANG COMPOSITE MATERIAL TECH