Modified asphalt for warm-mixed thin overlay and preparation method and application thereof

A thin-layer coating, modified asphalt technology, applied in building thermal insulation materials, building components, buildings, etc., can solve the problems of poor anti-scattering performance, poor anti-aging performance, and many difficult preparation steps, and achieve good anti-scattering performance. Effects of scattering properties and excellent anti-aging properties

Inactive Publication Date: 2020-05-29
成都交通投资集团有限公司
View PDF6 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of modified asphalt for warm-mixed thin-layer overlay in order to overcome the defects of poor anti-aging performance, poor anti-scattering performance, many preparation steps and difficult industrial production application in the above-mentioned prior art. Its preparation method and application

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Modified asphalt for warm-mixed thin overlay and preparation method and application thereof
  • Modified asphalt for warm-mixed thin overlay and preparation method and application thereof
  • Modified asphalt for warm-mixed thin overlay and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Take 10 kg of Esso No. 70 asphalt with a penetration of 70, heat it to 180 ° C, and add styrene-ethylene / butylene-styrene block copolymer (Sinopec SEBS, model YH-601) (the number average molecular weight is 160,000) 0.8 kg, 0.4 kg of urea-formaldehyde resin, and 0.2 kg of terpene resin, the mixture was passed through a colloid mill, and a strong mixer was used to stir for 4 hours at a stirring speed of 200 rpm. After adding 0.015 kg of sulfur and stirring for 2 hours, add 0.3 One kilogram of oleic acid amide was stirred for 1.5 hours to prepare modified asphalt, and the performance test results are shown in Table 1 and Table 2.

Embodiment 2

[0037]Take 10 kg of matrix asphalt with a penetration of 60, heat it to 160 ° C, add 0.6 kg of styrene-ethylene / butylene-styrene block copolymer (the copolymer is a star structure, and the styrene content is 37% , elongation at break ≥ 400%), 0.3 kg of urea-formaldehyde resin (urea-formaldehyde resin viscosity is 0.25Pa s), 0.1 kg of terpene resin (softening point 80 ° C), the mixture is passed through a colloid mill, and a strong mixer is used at 200 rpm Stir at a stirring speed of 1 / min for 2 hours, add 0.01 kg of sulfur and stir for 0.5 hour, then add 0.2 kg of oleic acid amide and stir for 0.5 hour to prepare modified asphalt.

Embodiment 3

[0039] Take 10 kg of matrix asphalt with a penetration of 60, heat it to 160°C, add 1 kg of styrene-ethylene / butylene-styrene block copolymer (the copolymer is a star structure, and the styrene content is 34% , elongation at break ≥ 400%), 0.5 kg of urea-formaldehyde resin (the viscosity of urea-formaldehyde resin is 0.4 Pa s), 0.25 kg of terpene resin (softening point 140 ° C), the mixture is passed through a colloid mill, and a strong mixer is used at 200 rpm Stir at a stirring speed of 1 / min for 6 hours, add 0.02 kg of sulfur and stir for 3 hours, then add 0.4 kg of oleic acid amide and stir for 3 hours to prepare modified asphalt.

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
melting pointaaaaaaaaaa
softening pointaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention relates to modified asphalt for a warm-mixed thin overlay and a preparation method and application thereof. The modified asphalt is prepared from the following raw material components: matrix asphalt, a styrene-ethylene/butylene-styrene block copolymer, oleamide, urea resin, terpene resin and sulfur. Compared with the prior art, the styrene-ethylene/butylene-styrene block copolymer and the urea resin are introduced into the asphalt composition, and the anti-aging agent or stabilizer terpene resin and sulfur are further added, so that the bonding strength between asphalt and aggregate is improved, the high-viscosity asphalt composition is ensured to have extremely excellent water loss resistance, and the warm-mixed thin overlay can still have good anti-scattering performance and anti-aging performance after being used for many years; and meanwhile, oleamide is added to achieve the effect of a surfactant, and it can be guaranteed that the modified asphalt special for the warm-mixed thin overlay has good workability in the construction process.

Description

technical field [0001] The invention relates to the field of road engineering, in particular to a modified asphalt for warm-mixed thin-layer overlay, a preparation method and application thereof. Background technique [0002] Thin-layer overlay usually refers to a thin-layer overlay with a thickness of less than 2 cm. The aggregate gradation is open gradation. Because of its large porosity and large contact area with air, it is prone to oxidation and aging, and it is more washed by rainwater. Usually its The durability is poor, usually after two or three years, it is prone to stone scattering, peeling and other diseases. Therefore, thin-layer overlays have higher requirements on the performance of asphalt, and usually require better adhesion between asphalt and aggregates, and asphalt has better anti-aging performance and better water damage resistance. Modified asphalt specially used for thin-layer overlays is currently mainly obtained by adding polymers to petroleum aspha...

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): C08L95/00C08L53/02C08L61/24C08L45/00C08K3/06C08K5/20
CPCC08L95/00C08L2201/08C08L2205/035C08L53/025C08L61/24C08L45/00C08K3/06C08K5/20
Inventor 肖军李旭郭仪南赵宇付涛
Owner 成都交通投资集团有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap