Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of composite modified asphalt

A technology of compound modified asphalt and modified asphalt, applied in the field of materials, can solve the problems of insufficient high temperature stability, easy cracking of asphalt pavement, poor low temperature deformation ability of asphalt mixture, etc.

Inactive Publication Date: 2017-10-27
新沂市中诺新材料科技有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under the condition of the same gradation, the thicker asphalt mixture has higher mechanical strength and stability, but if the consistency is too high, the low-temperature deformation ability of the asphalt mixture is poor, and the asphalt pavement is prone to cracks.
Conversely, in the case of the same gradation, if asphalt with lower consistency is used, the pavement layer has better deformation ability, but the high temperature stability is insufficient, and rutting, pushing and other phenomena are prone to occur.

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
  • Preparation method of composite modified asphalt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1 Prepare samples (unit parts) of AL(R)-1, AL(M)-3, SBS, and modified rubber powder at 200:170:40:60. AL(R)-1200 parts, AL(M)-3170 parts, SBS40 parts, modified rubber powder 60 parts, nano-carbon fiber 10 parts, 5% NAOH solution 60 parts, acetic acid 15 parts, xylene 20 parts, calcium zinc 16 parts of stabilizer, 30 parts of crosslinking agent dicumyl peroxide.

[0017] Step 1. Heat 200 parts of AL(R)-1 asphalt to 180°C, add 60 parts of modified rubber powder, and shear at 220°C and 1800r / min for a certain period of time to obtain rubber powder modified asphalt A1;

[0018] Step 2, then add 10 parts of carbon nanofibers into it, stir and react in a water bath at 80°C for 3h;

[0019] Step 3. Heat 60 parts of 5% NAOH solution to 70°C and quickly pour it into the nanofiber rubber powder modified asphalt A1 prepared above and heat it for 2 hours at the same time;

[0020] Step 4. Slowly add 40 parts of SBS to the alkali-treated A1 asphalt, and then cut it at 180°...

Embodiment 2

[0027] Example 2 Prepare samples (unit parts) of AL(R)-1, AL(M)-3, SBS, and modified rubber powder at 150:190:45:30. AL(R)-1150 parts, AL(M)-3190 parts, SBS45 parts, modified rubber powder 30 parts. Other raw material consumption, operation steps are the same with embodiment 1.

Embodiment 3

[0028] Example 3 Prepare samples (unit parts) of AL(R)-1, AL(M)-3, SBS, modified rubber powder 210:170:40:60. AL(R)-1210 parts, AL(M)-3170 parts, SBS40 parts, modified rubber powder 60 parts. Other raw material consumption, operation steps are the same with embodiment 1.

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

No PUM Login to View More

Abstract

The invention discloses a preparation method of composite modified asphalt. AL(R)-1 / AL(M)-3 composite modified asphalt is synthesized by using AL(R)-1 asphalt and AL(M)-3 asphalt and adding raw materials such as modified adhesive powder and SBS through a shearing method, a rapid stirring treatment method and the like. The invention provides a preparation method of the AL(R)-1 / AL(M)-3 composite modified asphalt. Preparation of the composite modified asphalt is a complex physical and chemical process, physical blending exists and chemical reaction is generated; a system phase state structure is changed, a space structure with excellent performance can be obtained, and excellent extending strength is achieved.

Description

technical field [0001] The invention relates to a preparation method of composite modified asphalt, which belongs to the field of materials. Background technique [0002] Asphalt is one of the most important components in asphalt mixture, which provides viscoelastic properties for the mixture and plays the role of aggregate cementation. Its performance directly affects the performance of asphalt concrete. There are many types of asphalt, and different types of asphalt materials have different technical indicators, which are suitable for different grades and different types of road surfaces. When selecting asphalt materials, various conditions such as traffic volume, climatic conditions, construction methods, asphalt surface layer types, and material sources should be considered, so that the asphalt mixture can have higher mechanical strength and better performance. durability. In the use of asphalt, usually in hotter climate zones and heavier traffic, fine-grained mixture...

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): C08L95/00C08L21/00C08L53/02C08K13/04C08K7/06C08K5/14C08K13/06C08K3/34
CPCC08K2201/011C08L95/00C08L2205/025C08L2205/035C08L21/00C08L53/02C08K13/04C08K7/06C08K5/14C08K13/06C08K3/346
Inventor 吴东海庄迪
Owner 新沂市中诺新材料科技有限公司