Effects of Partial Substitution of Styrene-butadiene-styrene with Granulated Blastfurnace Slag on the Strength Properties of Porous Asphalt
Publish Year: 1395
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJE-30-1_014
تاریخ نمایه سازی: 9 خرداد 1396
Abstract:
The present experimental research investigates the feasibility of partial substitution of styrenebutadiene- styrene (SBS) with ground granulated blast-furnace slag (GGBS) for the modification of bitumen and porous asphalt mixtures. The control asphalt mixture and the seven modified porous asphalt mixtures have been analyzed separately and their performance was compared. Modified bitumen and asphalt mixtures were evaluated based on the penetration test, softening point, ductility,Marshall stability, indirect tensile strength (ITS), moisture susceptibility, uniaxial compression test, porosity, and permeability. According to the results, a blend of GGBS and SBS can be used to modifyporous asphalt mixtures since it either improves or does not change their properties.The results show that using these additives have decreased penetration and ductility of bitumen and also there is an increase in softening point, so that the additives have strengthened asphalt mixture properties such as Marshall strength, ITS and Uniaxial compression strength.Furthermore, in the current research work, artificial neural networks (ANN) are used to estimate the permeability of modified porous asphaltmixtures. Sensitivity analysis was discussed for the measurement of the importance of different input parameters. The laboratory experiments and proposed ANN model indicated that a new method can be developed for permeability control
Keywords:
Asphalt Modification , Porous Asphalt , Styrene Butadiene Styrene , Ground Granulated Blast-furnace Slag , Artificial Neural Networks
Authors
S Shahba
Department of Civil and Surveying Engineering, Graduate University of Advanced Technology, Kerman, Iran
M Ghasemi
Department of Civil and Surveying Engineering, Graduate University of Advanced Technology, Kerman, Iran
S.M Marandi
Department of Civil Engineering, Shahid Bahonar University, Kerman, Iran