Evaluation of Paving Bitumen from Waxy Crude of North Eastern Region of India
محل انتشار: اولین همایش بین المللی قیر
سال انتشار: 1387
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 2,105
فایل این مقاله در 10 صفحه با فرمت PDF قابل دریافت می باشد
- صدور گواهی نمایه سازی
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
BITUMEN01_036
تاریخ نمایه سازی: 10 فروردین 1387
چکیده مقاله:
Bitumen is a binder which acts as an adhesive to bind mineral aggregates together to produce surface courses of road structure. Bitumen obtained from Indian refineries generally meets the current national standards and/or international specifications. However, bitumen meeting all specification still may not essentially give desired service life as the specifications may not sufficiently protect the quality and performance of bituminous mixes on actual road sites. Digboi refinery established in the state of Assam (North Eastern Region of India) produces, bitumen from indigenous crude, which is waxy in nature and is considered unsuitable particularly for construction of heavily trafficked roads. A laboratory study on evaluation of bitumen produced from waxy crude using Vacuum Residue Short Path Distillation (VRSD) unit was taken up. It was found that wax content is higher than the permissible limits and that the viscosity at 600C is lower than the permissible limits for S- 65 grade but it qualifies for S-90 grade bitumen. This bitumen also qualifies PG-58-22 performance grade of SHRP. Therefore, its performance on locations where 7 days average maximum pavement temperature is less than 580C may be acceptable. It was also found that the values of Marshall stability, Retained
Marshall stability, Indirect tensile strength and Stiffness modulus (at 150C, 250C, 350C) are comparable with S-65 grade bitumen produced from imported crude (meeting IS-73-1992 specifications), indicating negligible adverse effect of higher wax content. Bituminous mix has adequate resistance to deformation, cracking and stripping. The resistance to temperature susceptibility for waxy crude bitumen is identical or
better than the conventional bitumen. Hence, bitumen produced from VRSD unit is considered to be suitable for construction of roads. This paper discusses the evaluation of waxy bitumen produced from VRSD unit at Digboi refinery and also deals with the properties of bituminous mixes (viz., Stiffness modulus and Indirect tensile strength etc) prepared with waxy bitumen and non- waxy bitumen.
کلیدواژه ها:
نویسندگان
N.K.S Pundhir
Central Road Research Institute, New Delhi-۱۱۰۰۲۰
P.K Jain
Central Road Research Institute, New Delhi-۱۱۰۰۲۰
B.M Sharma
Central Road Research Institute, New Delhi-۱۱۰۰۲۰
مراجع و منابع این مقاله:
لیست زیر مراجع و منابع استفاده شده در این مقاله را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود مقاله لینک شده اند :