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Asphalt pavement structure

An asphalt pavement and bitumen technology, applied in the field of highway and urban road engineering, can solve the problems that the service life is difficult to meet the design requirements, road surface damage, etc., and achieve the effects of reducing the occurrence of early diseases, prolonging the service life and improving the strength.

Active Publication Date: 2021-11-19
湖南立新硅材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present application provides an asphalt pavement structure to solve the technical problem that the existing asphalt pavement has serious damage in the early stage and the service life is difficult to meet the design requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] (1) Preparation of nanocellulose thermoplastic polymer composite modifier:

[0072] Step 1: Add 4 parts of SBS polymer to 12 parts of low-boiling point organic solvent (this organic solvent is a mixture of hexane and ethyl acetate, and its mixing ratio is mass ratio cyclohexane:ethyl acetate=2:8~ 5:5), after fully dissolving, slowly add 12 parts of deionized water to the polymer organic solution, and then add 0.2 parts of emulsifier. Shearing on a high-speed emulsifying shear until fully emulsified, and then removing the organic solution by vacuum distillation to obtain a polymer emulsion;

[0073] Step 2: Add 0.5 parts of TEMPO oxidized wood pulp nanocellulose to 50 parts of deionized water, and obtain a uniformly dispersed nanocellulose aqueous solution through ultrasonic oscillation and magnetic stirring;

[0074] Step 3: Slowly add the nanocellulose aqueous solution prepared in step 2 to the polymer emulsion prepared in step 1, and use a high-speed emulsification s...

Embodiment 2

[0084] (1) Preparation of nanocellulose thermoplastic polymer composite modifier:

[0085] Step 1: Add 6 parts of SBS polymer to 18 parts of low-boiling point organic solvent (this organic solvent is a mixture of hexane and ethyl acetate, and its mixing ratio is mass ratio cyclohexane:ethyl acetate=2:8~ 5:5), after fully dissolving, slowly add 18 parts of deionized water to the polymer organic solution, and then add 0.4 parts of emulsifier. Shearing on a high-speed emulsifying shear until fully emulsified, and then removing the organic solution by vacuum distillation to obtain a thermoplastic polymer emulsion;

[0086] Step 2: Add 3 parts of TEMPO oxidized wood pulp nanocellulose to 300 parts of deionized water, and obtain a uniformly dispersed nanocellulose aqueous solution through ultrasonic oscillation and magnetic stirring;

[0087] Step 3: Slowly add the nanocellulose aqueous solution prepared in step 2 to the thermoplastic polymer emulsion prepared in step 1, and use a ...

Embodiment 3

[0097] (1) Preparation of nanocellulose thermoplastic polymer composite modifier:

[0098] Step 1: 5 parts of SBS polymers are added to 15 parts of low-boiling point organic solvents (the organic solvent is a mixture of hexane and ethyl acetate, and the mixing ratio is mass ratio cyclohexane:ethyl acetate=2:8~ 5:5), after fully dissolving, slowly add 15 parts of deionized water to the polymer organic solution, and then add 0.3 parts of emulsifier. Shearing on a high-speed emulsifying shear until fully emulsified, and then removing the organic solution by vacuum distillation to obtain a thermoplastic polymer emulsion;

[0099] Step 2: Add 2 parts of TEMPO oxidized wood pulp nanocellulose to 200 parts of deionized water, and obtain a uniformly dispersed nanocellulose aqueous solution through ultrasonic oscillation and magnetic stirring;

[0100] Step 3: Slowly add the nanocellulose aqueous solution prepared in step 2 to the thermoplastic polymer emulsion prepared in step 1, and...

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Abstract

The invention discloses an asphalt pavement structure which sequentially comprises a roadbed layer, a first waterproof layer, a cement-asphalt composite structure layer, a second waterproof layer and an asphalt surface layer from bottom to top. Starting from the pavement structure, cement concrete and an asphalt mixture are mutually embedded to form the composite structure layer, so that the advantages of high bearing capacity and shear resistance of a cement concrete rigid pavement are brought into play, conditions are created for forming strong combination with the asphalt surface layer, and the characteristics of high driving comfort and low noise of a flexible pavement are shown.

Description

technical field [0001] The application relates to the field of highway and urban road engineering, in particular to an asphalt pavement structure. Background technique [0002] Asphalt pavement refers to various types of pavement paved with road asphalt materials mixed with mineral materials, which has the advantages of comfortable driving and low noise. Asphalt binder can improve the ability of paving aggregates to resist damage to the road surface caused by driving and natural factors, making the road surface smooth, less dusty, impermeable and durable. According to the "Code for Design of Highway Asphalt Pavement", the structural layer of asphalt pavement consists of three parts: surface layer, base layer and subbase layer. Most of the high-grade pavement in my country adopts semi-rigid base asphalt pavement structure. [0003] Asphalt pavement structure belongs to flexible pavement structure. Asphalt mixture is a mixture formed by mixing gravel with asphalt, and is a ...

Claims

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Application Information

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IPC IPC(8): C09D195/00C09D163/00C09D153/02C09D101/04E01C7/32
CPCC09D195/00E01C7/32C08L53/02C08L1/04C08L63/00
Inventor 刘立新钟勇
Owner 湖南立新硅材料科技有限公司
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