High and Low-Temperature Performance Evaluation and Microanalysis of SMCSBS Compound-Modified Asphalt
The mixture of styreneic methyl copolymers (SMCs) normal temperature-modified asphalt and styrene-butadiene styrene block copolymer (SBS)-modified asphalt (SMCSBS) compound-modified asphalt was investigated in this study. The viscosity and temperature properties of compound modified asphalt (SMCSBS)...
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MDPI AG
2021-02-01
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| Online Access: | https://www.mdpi.com/1996-1944/14/4/771 |
| _version_ | 1797413631452774400 |
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| author | Yu Sun Dongpo He |
| author_facet | Yu Sun Dongpo He |
| author_sort | Yu Sun |
| collection | DOAJ |
| description | The mixture of styreneic methyl copolymers (SMCs) normal temperature-modified asphalt and styrene-butadiene styrene block copolymer (SBS)-modified asphalt (SMCSBS) compound-modified asphalt was investigated in this study. The viscosity and temperature properties of compound modified asphalt (SMCSBS) were studied by Brookfield rotary viscosity test. Dynamic shear rheometer (DSR) and bending beam rheometer (BBR) were used to test SMCSBS compound modified asphalt with different SMC additions. Finally, the microstructure and physicochemical properties of SMCSBS were evaluated by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR), and the modification mechanism of the SMCSBS was studied. The results show that the viscosity of the compound-modified asphalt added with SMC is improved, which is conducive to improving its workability. With the increase of SMC content, the high-temperature performance of the compound modified asphalt firstly increases and then decreases with the increase of SMC content. When the content of SMC is 12%, its high-temperature performance is the best. Compared with SBS-modified asphalt, the SMCSBS has better low-temperature performance, and the creep stiffness S and creep rate m of the SMC with different content are better than that of SBS. Finally, the microcosmic characteristics show that the SMC can give full play to its characteristics and can be uniformly dispersed in SBS modified asphalt. SMC is essentially a surfactant, which can reduce the viscosity and construction temperature by changing the surface tension and surface free energy of asphalt molecules. The curing agent of epoxy resin is slowly cross-linked and cured after contacting with air to form a certain strength, thus improving the road performance of the asphalt mixture. |
| first_indexed | 2024-03-09T05:20:48Z |
| format | Article |
| id | doaj.art-0929a1ba42ec4ae7a80252019d28b1f2 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T05:20:48Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-0929a1ba42ec4ae7a80252019d28b1f22023-12-03T12:40:17ZengMDPI AGMaterials1996-19442021-02-0114477110.3390/ma14040771High and Low-Temperature Performance Evaluation and Microanalysis of SMCSBS Compound-Modified AsphaltYu Sun0Dongpo He1School of Civil Engineering, Northeast Forestry University, Harbin 150040, ChinaSchool of Civil Engineering, Northeast Forestry University, Harbin 150040, ChinaThe mixture of styreneic methyl copolymers (SMCs) normal temperature-modified asphalt and styrene-butadiene styrene block copolymer (SBS)-modified asphalt (SMCSBS) compound-modified asphalt was investigated in this study. The viscosity and temperature properties of compound modified asphalt (SMCSBS) were studied by Brookfield rotary viscosity test. Dynamic shear rheometer (DSR) and bending beam rheometer (BBR) were used to test SMCSBS compound modified asphalt with different SMC additions. Finally, the microstructure and physicochemical properties of SMCSBS were evaluated by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR), and the modification mechanism of the SMCSBS was studied. The results show that the viscosity of the compound-modified asphalt added with SMC is improved, which is conducive to improving its workability. With the increase of SMC content, the high-temperature performance of the compound modified asphalt firstly increases and then decreases with the increase of SMC content. When the content of SMC is 12%, its high-temperature performance is the best. Compared with SBS-modified asphalt, the SMCSBS has better low-temperature performance, and the creep stiffness S and creep rate m of the SMC with different content are better than that of SBS. Finally, the microcosmic characteristics show that the SMC can give full play to its characteristics and can be uniformly dispersed in SBS modified asphalt. SMC is essentially a surfactant, which can reduce the viscosity and construction temperature by changing the surface tension and surface free energy of asphalt molecules. The curing agent of epoxy resin is slowly cross-linked and cured after contacting with air to form a certain strength, thus improving the road performance of the asphalt mixture.https://www.mdpi.com/1996-1944/14/4/771SMSSBS compound-modified asphaltviscosity-temperature characteristicshigh and low-temperature performancemicroscopic features |
| spellingShingle | Yu Sun Dongpo He High and Low-Temperature Performance Evaluation and Microanalysis of SMCSBS Compound-Modified Asphalt Materials SMSSBS compound-modified asphalt viscosity-temperature characteristics high and low-temperature performance microscopic features |
| title | High and Low-Temperature Performance Evaluation and Microanalysis of SMCSBS Compound-Modified Asphalt |
| title_full | High and Low-Temperature Performance Evaluation and Microanalysis of SMCSBS Compound-Modified Asphalt |
| title_fullStr | High and Low-Temperature Performance Evaluation and Microanalysis of SMCSBS Compound-Modified Asphalt |
| title_full_unstemmed | High and Low-Temperature Performance Evaluation and Microanalysis of SMCSBS Compound-Modified Asphalt |
| title_short | High and Low-Temperature Performance Evaluation and Microanalysis of SMCSBS Compound-Modified Asphalt |
| title_sort | high and low temperature performance evaluation and microanalysis of smcsbs compound modified asphalt |
| topic | SMSSBS compound-modified asphalt viscosity-temperature characteristics high and low-temperature performance microscopic features |
| url | https://www.mdpi.com/1996-1944/14/4/771 |
| work_keys_str_mv | AT yusun highandlowtemperatureperformanceevaluationandmicroanalysisofsmcsbscompoundmodifiedasphalt AT dongpohe highandlowtemperatureperformanceevaluationandmicroanalysisofsmcsbscompoundmodifiedasphalt |