High-quality cold asphalt pavement and construction method thereof

A technology of asphalt pavement and construction method, which is applied in the field of high-quality cold asphalt pavement and its construction, and can solve the problems of shortening the estimated running time of asphalt pavement, cracking, network cracking of the pavement base layer, etc.

Inactive Publication Date: 2021-08-06
河南金欧特实业集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the asphalt pavement has the following problems: when the asphalt pavement encounters water damage, it is easy to cause network cracks and cracks in the pavement base; Reduce estimated operating times on asphalt pavements
The storage and transportation of traditional asphalt requires special treatment, which consumes a lot of manpower, material resources, and financial resources, and has high potential safety hazards. Therefore, storage and transportation are inconvenient, and it is impossible to accurately measure and sell

Method used

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  • High-quality cold asphalt pavement and construction method thereof
  • High-quality cold asphalt pavement and construction method thereof
  • High-quality cold asphalt pavement and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1 prepares modified rubber asphalt

[0030] Preparation of sulfur modifier: After mixing 80 g of methyldiethanolamine and 11 g of stearic acid, stir and add 8 g of liquid sodium hydroxide with a mass fraction of 30%, raise the temperature to 50°C and react for 2 to 3 hours, until the pH value of the reaction solution reaches neutral Then add hydroxypropyl methylcellulose into the reaction liquid, keep warm for 1-2h, and finally add 5g of pour point depressant JN-50 and 25g of modified coconut alcohol ZR-08, continue to keep warm for 1 hour, then cool Prepare the hydrogen sulfide inhibitor; fully mix sulfur, waste rubber powder, fly ash, hydrogen sulfide inhibitor and isoamyl acetate with a mass ratio of 100:5:8:1.5:0.5, heat to the sulfur molten state, After stirring for 0.5h, pour the mixture into cooling water at a constant speed to obtain a granular product; heat 55 parts of low-wax asphalt matrix with a wax content of 2% to 120°C, add 9 parts of linear SB...

Embodiment 2

[0031] Embodiment 2 prepares modified rubber asphalt

[0032] After mixing 120 g of methyldiethanolamine and 18 g of stearic acid, stir and add 10 g of liquid sodium hydroxide with a mass fraction of 30%, raise the temperature to 90° C. and react for 3 to 5 hours until the pH of the reaction solution is neutral, and then add hydroxypropyl Add methyl cellulose into the reaction solution, keep it warm for 1-2 hours, and finally add 12g of pour point depressant JN-50 and 38g of modified coconut oil alcohol ZR-08, continue to keep warm for 2 hours, then cool to prepare hydrogen sulfide inhibitor ; Fully mix sulfur, waste rubber powder, fly ash, hydrogen sulfide inhibitor and isoamyl acetate with a mass ratio of 100:15:12:3:2, heat to the molten state of sulfur, stir for 2 hours, and mix the mixture Pour into cooling water at a uniform speed to obtain granular finished products; after heating 75 parts of low-wax asphalt matrix with a wax content of 5% to 140°C, add 16 parts of star...

Embodiment 3

[0033] Embodiment 3 prepares modified rubber asphalt

[0034]After mixing 100 g of methyldiethanolamine and 15 g of stearic acid, stir and add 15 g of liquid sodium hydroxide with a mass fraction of 30%, raise the temperature to 60°C and react for 3 to 5 hours, and wait until the pH value of the reaction solution is neutral, then add hydroxypropyl Add methyl cellulose into the reaction liquid, keep it warm for 1-2 hours, and finally add 20g of pour point depressant JN-50 and 65g of modified coconut oil alcohol ZR-08, continue the keep warm reaction for 2 hours, then cool to prepare hydrogen sulfide inhibitor ; Fully mix sulfur, waste rubber powder, fly ash, hydrogen sulfide inhibitor and isoamyl acetate with a mass ratio of 100:12:10:2:1, heat to the molten state of sulfur, stir for 2 hours, and mix the mixture Pour into cooling water at a uniform speed to obtain granular finished products; after heating 65 parts of low-wax asphalt matrix with a wax content of 4% to 130°C, add...

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Abstract

The invention relates to the technical field of road construction and particularly relates to a high-quality cold-state asphalt pavement and a construction method thereof. The high-quality cold-state asphalt pavement comprises an asphalt surface layer, a base layer, a subbase layer and a cushion layer which are sequentially laid on a roadbed from top to bottom. Compared with the prior art, the construction method is advantaged in that the stress condition of the pavement structure is improved, the number of reflection cracks is reduced, and use performance of the highway pavement is improved, so the service life of the pavement is prolonged, the structural strength of the pavement is effectively improved by reasonably limiting the elasticity modulus and laying thickness of the asphalt surface layer, the base layer and the subbase layer, reflection cracks formed by asphalt pavement are reduced, and the road service life is increased. According to the modified rubber asphalt, various modifiers are added into an asphalt matrix with low wax content, so comprehensive performance of the asphalt is greatly improved, high-temperature storage stability, the high and low temperature performance, the aging performance, the viscoelasticity and viscosity and toughness are obviously improved, and the use requirements in alpine regions or high-temperature regions are met.

Description

technical field [0001] The invention relates to the technical field of road construction, in particular to a high-quality cold asphalt pavement and a construction method thereof. Background technique [0002] With the rapid development of economy and society, people's demand for travel quality has been continuously upgraded, and the concept of "environmental friendliness" has become increasingly prominent in transportation construction. In the field of road engineering, how to improve the use function of the road surface and how to provide the society with high safety, more comfortable and more environmentally friendly road surface characteristics has become a new goal pursued by my country's transportation department in the new era. Asphalt pavement refers to various types of pavement paved with asphalt materials mixed with mineral materials. Asphalt binder improves the ability of paving aggregates to resist road damage from driving and natural factors, making the road smo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/32E01C19/46E01C19/47E01C19/48
CPCE01C7/32E01C19/46E01C19/47E01C19/48E01C19/4806
Inventor 刘洪磊王海赞郑伟沈军伟苗向阳张旭娜李冶罗超凡李泽雨陈秋雨安娜喻一杨月鹏伍昕萌张晓刚
Owner 河南金欧特实业集团股份有限公司
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