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Asphalt thickener and asphalt cement

A technology of thickener and asphalt glue, which is applied in the direction of building insulation materials, building components, buildings, etc., can solve the problems that cannot be well applied in road engineering construction, etc., and achieve excellent anti-leakage performance, easy to obtain raw materials, and easy to spread The effect of paving and rolling

Inactive Publication Date: 2016-03-09
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] To sum up, although the current research and application of asphalt thickener and asphalt binder have achieved certain results, there are still many deficiencies and cannot be well applied to highway construction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Take the 90 provided by Panjin, Liaoning # Heat 200.00g of heavy traffic road petroleum asphalt to about 150°C to make it have a certain fluidity, and add 0.2% thickener according to the mass content, stir for 30 minutes to fully disperse and mix, and pass the DSR test to reflect the viscosity of the asphalt binder Relationship to shear frequency.

Embodiment 2

[0029] Take the 90 provided by Panjin, Liaoning # Heat 199.98g of petroleum asphalt for heavy traffic roads to about 150°C to make it have a certain fluidity, and add 0.5% thickener according to the mass content, stir for 30 minutes to fully disperse and mix, and pass the DSR test to reflect the viscosity of the asphalt binder Relationship to shear frequency.

Embodiment 3

[0031] Take the 90 provided by Panjin, Liaoning # Heat 200.26g of petroleum asphalt for heavy traffic roads to about 150°C to make it have certain fluidity, add 1.0% thickener according to the mass content, stir for 30 minutes to fully disperse and mix, and pass the DSR test to reflect the viscosity of the asphalt binder Relationship to shear frequency.

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PUM

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Abstract

The invention discloses an asphalt thickener and asphalt cement. The asphalt thickener is macromolecular polysaccharide, which consists of D-glucose, D-glucuronic acid, L-rhamnose and L-mannose and has tetrasaccharide repeating units, and contains the chemical constituents: 2.8-7.5% of acetyl and 11.6-14.9% of glucuronic acid. The asphalt cement contains 0.2-3.0% (by mass) of the thickener. The thickener disclosed by the invention is a polysaccharide with high molecular weight, and polymer molecular chains can be wound and curled to one another at a low shearing rate, so that the apparent viscosity of an asphalt system is improved; a polymer structure is depolymerized into an irregular linear structure at a high shearing rate, so that the viscosity is rapidly lowered; and when the shearing rate is canceled, a molecular structure is restored to a double-helix reticular polymer state, so that the viscosity of the asphalt cement is restored to the maximum.

Description

technical field [0001] The invention belongs to the technical field of building materials, and relates to the asphalt material technology for engineering roads, in particular to an asphalt thickener and an asphalt binder using the thickener. Background technique [0002] At present, my country's highway construction is developing rapidly. Due to its obvious advantages in driving comfort, performance, construction speed, and convenient maintenance, asphalt pavement has become the most important component in the field of road pavement construction in my country. With the continuous increase in traffic volume and the widespread overloading of transportation, coupled with the complexity of our country's climate and natural environment, various reasons have caused a large number of early damage phenomena of newly built roads. [0003] The application of new materials is one of the important breakthroughs to solve the early failure phenomenon of pavement. The performance of asph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L5/00
CPCC08L95/00C08L2555/82C08L5/00
Inventor 刘刚吴少鹏涂亮亮周新星
Owner WUHAN UNIV OF TECH