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Thermogravimetric studies on Iraqi paving asphalts
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نویسنده
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barbooti m.m. ,al-soufi h.h. ,al-saleem h.
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منبع
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journal of materials and environmental science - 2016 - دوره : 7 - شماره : 1 - صفحه:293 -298
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چکیده
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The thermal behavior of two asphalts,quayarah and daura,employed for paving in iraq,was studied during mixing and laying conditions using dynamic thermogravimetry,tg,under air and nitrogen atmospheres. quayarah asphalt is produced by direct topping of process quayarah heavy crude oils (api= 15-20). meanwhile,the daura asphalt is produced from kirkuk crude oil by blending soft and hard stocks obtained by vacuum distillation of the reduced crude. quayarah is characterized by lower saturates,lower polar aromatics and higher naphthene-aromatics and higher viscosity than daura asphalt. the asphalts were prepared in such a way to have the same penetration value. the main features of the tg curve were explained and correlated with the chemical composition,method of preparation and performance of the asphalts. thermogravimetry can be used to aid the standard methods of asphalt testing.
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کلیدواژه
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Asphalt; Heavy crude oil asphalt; Quayarah and Daura asphalt; Thermal behavior; Thermogravimetry
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آدرس
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department of applied chemistry,school of applied sciences,university of technology,baghdad, Iraq, department of applied chemistry,school of applied sciences,university of technology,baghdad, Iraq, department of applied chemistry,school of applied sciences,university of technology,baghdad, Iraq
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Authors
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