Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Special modified asphalt suitable for tropical asphalt pavement and preparation method thereof

A technology for modifying asphalt and asphalt pavement, which is applied to building components, building insulation materials, buildings, etc., to achieve good economic benefits, improve rutting resistance, and increase viscosity, toughness, and elasticity

Pending Publication Date: 2022-04-05
CHINA ROAD & BRIDGE
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, Cambodia’s tropical high-temperature and rainy weather has particularly high requirements for asphalt pavement, and its asphalt pavement is mainly characterized by serious diseases such as rutting, shifting, and potholes. Therefore, traditional modified asphalt is difficult to adapt to high-temperature and rainy weather all year round. Performance Anti-rutting and anti-water damage modified asphalt, compared with ordinary asphalt, can effectively alleviate the problem of rutting and water damage on the pavement under high traffic load conditions, improve the service ability of the asphalt pavement, and effectively extend the service life of the pavement. Improve social and economic benefits

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
  • Special modified asphalt suitable for tropical asphalt pavement and preparation method thereof
  • Special modified asphalt suitable for tropical asphalt pavement and preparation method thereof
  • Special modified asphalt suitable for tropical asphalt pavement and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0037] The present invention also provides a method for preparing special modified asphalt suitable for tropical asphalt pavement, comprising the steps of:

[0038] S1, each component is weighed according to the weight part;

[0039] S2. Heating the base asphalt to a fluid state, stirring and preheating to 170-185° C., adding a polymer elastomer modifier, and shearing for 1 hour to obtain a premix.

[0040] S3, adding the rubber oil to the premix, stirring for 0.5h;

[0041] S4. Add antioxidant, stir for 0.5h, add stabilizer, lower the temperature of modified asphalt to 175°C±5°C and stir for 4-5h.

[0042] S5. Cool down to 150° C., add special curing agent, special asphalt granules, viscosity reducer and plastic granules, and stir for 4 hours to obtain the sample A.

[0043] S6. Add bisphenol A and non-bisphenol A epoxy resin to sample A before processing the mixture or before testing, and stir evenly to prepare special modified asphalt for tropical asphalt pavement.

[00...

Embodiment 1

[0050] Raw material ratio:

[0051]

[0052]

[0053] Modified asphalt preparation:

[0054] S1, each component is weighed according to the weight part;

[0055] S2. Heating the Taizhou CNOOC 70# bitumen to a flow state, stirring and preheating to 170-185° C., adding SBR modifier, and shearing for 1 hour to obtain a premix.

[0056] S3. Add the No. 8-12 rubber oil to the premix, and stir for 0.5h;

[0057] S4. Add butylated hydroxytoluene (BHT), stir for 0.5h, add sulfur, lower the temperature of the modified asphalt to 175°C±5°C and stir for 4-5h.

[0058] S5. Cool down to 150° C., add octadecylamine, 30# asphalt, Honeywell 7686 and LLDPE, and stir for 4 hours to obtain the sample A.

[0059] S6. Add bisphenol A epoxy resin NPEL128 and EP-207 to sample A before processing the mixture or before testing, and stir evenly to prepare special modified asphalt for tropical asphalt pavement.

[0060] Preparation of AC-13 asphalt mixture:

[0061] Take 100 parts of the AC-1...

Embodiment 2

[0068] Raw material ratio:

[0069]

[0070]

[0071] Modified asphalt preparation:

[0072] S1, each component is weighed according to the weight part;

[0073] S2. Heating the Ssangyong 70# asphalt to a fluid state, stirring and preheating to 170-185°C, adding a linear SBS modifier, and shearing for 1 hour to obtain a premix.

[0074] S3. Add the No. 8-24 rubber oil to the premix, and stir for 0.5h;

[0075] S4. Add tert-butylhydroquinone (TBHQ), stir for 0.5h, add sulfur, lower the temperature of the modified asphalt to 175°C±5°C and stir for 4-5h.

[0076] S5. Cool down to 150°C and add special hexadecylamine, 20# asphalt, Sasobit and LDPE, and stir for 4 hours to obtain the sample A.

[0077] S6. Add bisphenol A epoxy resin E51 and ERL-4221 to sample A before processing the mixture or before testing, and stir evenly to prepare modified asphalt specially for tropical asphalt pavement.

[0078] Preparation of AC-13 asphalt mixture:

[0079] Take 100 parts of the ...

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
flash pointaaaaaaaaaa
Login to View More

Abstract

The invention discloses special modified asphalt suitable for a tropical asphalt pavement. The special asphalt comprises the following main components: 100 parts of 70 # matrix asphalt, 4-8 parts of a polymeric elastomer modifier, 10-20 parts of bisphenol A epoxy resin, 1-5 parts of non-bisphenol A epoxy resin, 8-30 parts of a special curing agent, 0.5-1.5 parts of an antioxidant, 15-30 parts of special asphalt particles, 0.1-0.3 part of a stabilizer, 3-6 parts of rubber oil, 0.4-5 parts of a viscosity reducer and 2-8 parts of plastic particles. Wherein the epoxy resin can significantly improve the high and low temperature performance of the asphalt mixture, the plastic particles and the special asphalt can significantly improve the high temperature performance of the asphalt mixture, and the polymeric elastomer modifier can significantly improve the low temperature performance of the asphalt mixture. Therefore, the modified asphalt prepared by the method has the advantages of higher high and low temperature performance, excellent rutting resistance, excellent deformation resistance and PG grading.

Description

technical field [0001] The invention belongs to the technical field of road asphalt materials, and in particular relates to a special modified asphalt suitable for tropical asphalt pavement. Background technique [0002] Cambodia is located in the southern part of the Indochina Peninsula in Southeast Asia, with an area of ​​181,035 square kilometers. It borders Thailand to the west and northwest, Laos to the northeast, and Vietnam to the east and southeast. Therefore, Cambodia is located in the tropics and belongs to the tropical monsoon climate. It is a low-latitude country and is widely affected by the monsoon climate. Its biggest feature is that it is summer all year round, and the four seasons are not clear, that is, there are no spring, summer, autumn and winter, but divided into rainy season and dry season. The annual average temperature in Cambodia is 29-30°C, and the highest temperature can reach 42°C. The rainy season is from May to October, and the dry season is f...

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): C08L95/00C08L63/02C08L9/06C08L23/08C08L23/06C08L53/02C08L23/12C08L11/00C08K3/06
Inventor 张琪刘昕依杨清源施孟成罗恒
Owner CHINA ROAD & BRIDGE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com