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Design of SBS-Modified Bitumen Stabilizer Powder Based on the Vulcanization Mechanism
- Source :
- Applied Sciences; Volume 8; Issue 3; Pages: 457, Applied Sciences, Vol 8, Iss 3, p 457 (2018)
- Publication Year :
- 2018
- Publisher :
- Multidisciplinary Digital Publishing Institute, 2018.
-
Abstract
- In order to improve the problem of the bad thermal storage stability of Styrene-Butadiene-Styrene Block Copolymer Modified Bitumen (SBS-modified bitumen), the vulcanization reaction was selected as the basic mechanism for the research and development of the stabilizer. Sulfur, tetramethylthiuram disulfide (TMTD), zinc oxide, butylated hydroxytoluene (BHT), kaolin (Al2O3·2SiO2·2H2O) and carbon-white (SiO2) were used as raw materials, and 32 kinds of components with different contents of raw materials were designed. The 48-h segregation softening point and other modified bitumen technical indicators, such as ductility, penetration, penetration index, viscosity, and so on, were tested and analyzed. The fluorescence microscope test was also conducted to explore the crosslinking situation based on the vulcanization reaction. The results show that the component with good performance of the SBS-modified bitumen stabilizer powder was S:TMTD:ZnO:BHT: Al2O3·2SiO2·2H2O = 60:16:4:20:1250 or S:TMTD:ZnO:BHT:SiO2 = 60:16:4:20:625. The optimum content of stabilizer powder was 0.9% (S/modified bitumen). The stabilizer was dry powder and can be directly put into bitumen. It can cross-link SBS and especially has an effect on preventing SBS segregation. The technical performance of SBS-modified bitumen with stabilizer powder, such as hot temperature performance, low temperature performance, anti-aging performance and thermal storage stability, all meet the relevant specifications.
- Subjects :
- Materials science
Softening point
0211 other engineering and technologies
chemistry.chemical_element
02 engineering and technology
Raw material
stabilizer
48-h segregation softening point difference
lcsh:Technology
law.invention
lcsh:Chemistry
chemistry.chemical_compound
thermal storage stability
law
021105 building & construction
Copolymer
Butylated hydroxytoluene
General Materials Science
vulcanization reaction
Instrumentation
lcsh:QH301-705.5
Fluid Flow and Transfer Processes
lcsh:T
SBS-modified bitumen
Process Chemistry and Technology
General Engineering
Vulcanization
Penetration (firestop)
021001 nanoscience & nanotechnology
Sulfur
lcsh:QC1-999
Computer Science Applications
chemistry
Chemical engineering
lcsh:Biology (General)
lcsh:QD1-999
Asphalt
lcsh:TA1-2040
0210 nano-technology
lcsh:Engineering (General). Civil engineering (General)
lcsh:Physics
Subjects
Details
- Language :
- English
- ISSN :
- 20763417
- Database :
- OpenAIRE
- Journal :
- Applied Sciences; Volume 8; Issue 3; Pages: 457
- Accession number :
- edsair.doi.dedup.....4ce999018e4517c0c4f0a80e718814a6
- Full Text :
- https://doi.org/10.3390/app8030457