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http://dx.doi.org/10.9713/kcer.2017.55.5.690

Optimization to Prepare SIS-SBS Modified Asphalt for Waterproof-sheet  

Lim, Kwang-Hee (Department of Chemical Engineering, Daegu University)
Publication Information
Korean Chemical Engineering Research / v.55, no.5, 2017 , pp. 690-697 More about this Journal
Abstract
In this study, styrene-isoprene-styrene (SIS)-styrene-butadiene-styrene (SBS) modified asphalt was prepared for waterproof-sheet to measure its properties including softening point, penetration, low temperature flexibility, viscosity and adhesion. Then the properties of SIS-SBS modified asphalt imparted with self-healing were optimized to seek for optimal compositions of SIS and SBS versus asphalt according to response surface methodology (RSM). As the content of SBS or SIS was increased, both properties of softening point and viscosity, measured at high temperature, were increased with a statistical significance. However, the increments of softening point and viscosity per unit content of SBS added, were observed to be greater than those per unit content of SIS added, respectively. It was due to the difference of thermal properties of SBS and SIS at high temperature that the cross-linking degree of SBS was increased by gelation accompanied with the increase of viscosity, while chain-entanglement of SIS was relatively reduced owing to a chain scission of poly(isoprene) blocks causing the decrease of viscosity. To the contrary, SIS-SBS modified asphalt showed a behavior of the least elasticity resulting in both the maximum of penetration and adhesion, measured at room temperature, as well as the lowest low temperature flexibility at the composition of SIS, 4 g and SBS, 8.5 g based on asphalt, 63 g.
Keywords
SIS-SBS modified asphalt; Optimization; Softening point; Penetration; Low temperature flexibility; Viscosity; Adhesion;
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1 Zhang, Y., Zhao, S., Li, Y., Xie, L. and Sheng, K., "Radiation Effects of Styrene-butadiene-styrene Copolymer," Nucl. Instr. Meth. Phys. Res., 266(15), 3431-3436(2007).
2 Chen, J.-S., Liao, M.-C. and Shiah, M.-S., "Asphalt Modified by Styrene-butadiene-styrene Triblock Copolymer: Morphology and Model," JMCE., 14(3), 224-229(2002).
3 Jung, H. S., Kang, H. J., Song, J. Y. and Oh, S. K., "An Experimental Study on the Adhesion Property of Self Adhesive Rubberized Asphalt Waterproofing Sheet," J. Korea Inst. Build. Constr., 8, 1-4(2005).
4 Wen, G., Zhang, Y., Zhang, Y., Sun, K. and Chen, Z., "Vulcanization Characteristics of Asphalt/SBS blend in the Presence of Sulfur," J. Appl. Polym. Sci., 82(4), 989-996(2001).   DOI
5 Takallou, H. B., Hicks, R. G., Vinsen, T. S. and Esch, D. C., "Performance of Rubber-Modified Asphalt Pavement in Cold Region," Cold Region Engineering, 99, 86(1988).
6 Polacco, G., Stastna, J., Vlachovicova, Z., Biondi, D. and Zanzotto, L., "Temporary Networks in Polymer-Modified Asphalts," Polym. Eng. Sci., 44(12), 2185-2193(2004).   DOI
7 Wen, G., Zhang, Y., San, K. and Fan, Y., "Rheological Characterization of Storage-stable SBS-modified Asphalts," Polymer Testing, 21(3), 295-302(2002).   DOI
8 Masson, J. F., Polomark, G., and Collins, P., "Glass Transitions and Amorphous Phases in SBS-bitumen Blends," Thermochimica Acta, 436(1-2), 96-100(2005).   DOI
9 Airey, G. D., "Styrene Butadiene Styrene Polymer Modification of Road Bitumens," J. Mater. Sci., 39(3), 951-999(2004).   DOI
10 Becker, Y., Mendez, M. P. and Rodriguez, Y., "Polymer Modified Asphalt," Vision Technologica, 9(1), 39-50(2001).
11 Dong, D., Huang, X., Li, X. and Zhang, L., "Swelling Process of Rubber in Asphalt and Its Effect on the Structure and Properties of Rubber and Asphalt," Construction and Building Materials, 29, 316-322(2012).   DOI
12 Sengoz, B. and Isikyakar, G., "Analysis of Styrene-butadiene-Styrene Polymer Modified Bitumen Using Fluorescent Microscopy and Conventional Test Methods," J. Hazard. Mater., 150(2), 424-432(2008).   DOI
13 Adedeji, A., Grunfelder, T., Bates, F. S. and Macosko, C. W., "Asphalt Mofied by SBS Triblock Copolymer Structures and Properties," Polym. Eng. Sci., 36(12), 1707-1723(1996).   DOI
14 Korean Standards Association, KS M2201 Straight asphalt(2012).
15 Korean Standards Association, KS M2250 Testing method for softening point of bituminous materials (Ring and ball method) (2012).
16 Korean Standards Association, KS M2252 Testing method for penetrating of bituminous materials (2012).
17 Korean Standards Association, KS F4934 Self adhesive rubberized asphalt sheet (2013).
18 Jin, H., Gao, G., Zhang, Y., Zhang, Y., Sun, K. and Fan, Y., "Improved Properties of Polystyrene-modified Asphalt Through Dynamic Vulcanization," Polymer Testing, 21(6), 633-640(2002).   DOI