Warm-mixing high-elastoplasticity bridge expansion joint sealing material and preparation method thereof

A high-elasticity, warm-mixing type technology, applied in building insulation materials, building components, climate change adaptation, etc., can solve the problems of insufficient material elasticity, difficult bridge coordination deformation, high construction requirements, etc., and achieve good high temperature and anti-rutting Ability, viscosity reduction effect

Active Publication Date: 2013-09-18
TONGJI UNIV
View PDF4 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the joint filling material is required to have good elasticity and good bonding ability with the bridge. In recent years, many elastic-plastic bridge expansion joint joint filling materials have appeared at home and abroad, but there are two problems: 1. . The elasticity o

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0024] Example 1

[0025] A warm-mix high-elasticity modified asphalt, including the following components:

[0026] 70# Road petroleum asphalt: styrene-butadiene block polymer (SBS): styrene butadiene rubber (SBR): resin: stabilizer: warm mixing agent = 100:9:4:4:3:3. The styrene-butadiene block polymer is star-shaped. The resin is petroleum resin. The stabilizer is a mixture of sulfur and TOR rubber stabilizer, and the ratio is: sulfur:TOR=4:1. Said warm mixing agent is Sasobit viscosity reducing agent.

[0027] 1. Put the asphalt in 120℃ for 1 hour and wait until the asphalt is in a liquid state.

[0028] 2. Use electric furnace to heat, set the temperature to 175~180℃, add the weighed styrene-butadiene block polymer (SBS) into the asphalt, and use a high-speed shearing machine for high-speed shearing at a speed of 1500~ 3000r / min, shearing time is 30~45min, then adding SBR for high-speed shearing for 30~60min, adding resin and TOR rubber stabilizer for shearing for 20~30min.

[...

Example Embodiment

[0038] Example 2

[0039] A warm-mix high-elasticity modified asphalt, including the following components:

[0040] 70# Road petroleum asphalt: styrene-butadiene block polymer (SBS): styrene butadiene rubber (SBR): resin: stabilizer: warm mixing agent = 100:5:4:4:3:3. The styrene-butadiene block polymer is star-shaped. The resin is petroleum resin. The stabilizer is a mixture of sulfur and TOR rubber stabilizer, and the ratio is: sulfur:TOR=4:1. Said warm mixing agent is Sasobit viscosity reducing agent.

[0041] 1. Put the asphalt in 120℃ for 1 hour and wait until the asphalt is in a liquid state.

[0042] 2. Use electric furnace to heat, set the temperature to 175~180℃, add the weighed styrene-butadiene block polymer (SBS) into the asphalt, and use a high-speed shearing machine for high-speed shearing at a speed of 1500~ 3000r / min, shearing time is 30~45min, then adding SBR for high-speed shearing for 30~60min, adding resin and TOR rubber stabilizer for shearing for 20~30min.

[...

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
Softening pointaaaaaaaaaa
Extensibilityaaaaaaaaaa
Softening pointaaaaaaaaaa
Login to view more

Abstract

The invention discloses a warm-mixing high-elastoplasticity bridge expansion joint sealing material and a preparation method thereof. The warm-mixing high-elastoplasticity bridge expansion joint sealing material comprises the following components: petroleum asphalt: SBS (Styrene-Butadiene Block Polymer):SBR (Styrene Butadiene Rubber):resin: stabilizing agents: warm-mixing agents=100:(3-10):(1-5):(0-10):(2-6):(1-5), wherein the resin is petroleum resin or abietic resin; and the stabilizing agents are mixtures of sulphur and TOR (trans-polyoctenamer rubber) stabilizing agents, and the proportion of the sulphur to TOR is 4: (1-2). The joint sealing material obtained through a formula has the characteristics of being a warm-mixing type modified asphalt material which has stability at high temperature, cracking resistance at low temperature, good bonding capacity and very good elastic recovery capacity.

Description

technical field [0001] The invention belongs to building materials, and relates to a warm-mixing type high-elasticity modified asphalt, which is mainly used for the elasticity of the asphalt and lowering the construction temperature of the asphalt, and is suitable for bridge expansion joints of seamless bridges. Background technique [0002] Warm mixing technology is to reduce the mixing degree of asphalt by adding certain additives to asphalt or using special technology. Compared with traditional asphalt, the construction temperature of warm mix asphalt can be reduced by 30~60℃. The reduction of asphalt construction temperature can not only reduce energy consumption during production, reduce emissions of carbon dioxide, smoke and other waste gases, effectively protect the surrounding environment, but also protect the health of construction workers and prolong the service life of construction equipment. [0003] Expansion joints are expansion joints installed between adjace...

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
IPC IPC(8): C08L95/00C08L53/02C08L9/06C08L57/02C08L93/04C08K3/06
CPCY02A30/30
Inventor 孙大权曹林辉胡金龙
Owner TONGJI UNIV
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