Experimental Investigation of the Coarse Aggregate Angularity Effect on Mechanical Performance of HMA
عنوان مقاله: Experimental Investigation of the Coarse Aggregate Angularity Effect on Mechanical Performance of HMA
شناسه ملی مقاله: NCCE04_305
منتشر شده در چهارمین کنگره ملی مهندسی عمران در سال 1387
شناسه ملی مقاله: NCCE04_305
منتشر شده در چهارمین کنگره ملی مهندسی عمران در سال 1387
مشخصات نویسندگان مقاله:
Mahyar Arabani - Associate Professor, Engineering Faculty, Guilan University, Rasht
Behrooz Ferdowsi - B.Sc, Engineering Faculty, Guilan University, Rasht
خلاصه مقاله:
Mahyar Arabani - Associate Professor, Engineering Faculty, Guilan University, Rasht
Behrooz Ferdowsi - B.Sc, Engineering Faculty, Guilan University, Rasht
The variation of the coarse aggregate angularity (CAA) can influence the interlocking of the stone particles and consequently have an important effect on the shear strength, stiffness and asphalt-aggregate interaction. The present study related the coarse aggregate angularity to the laboratory fatigue and creep performance of asphalt pavements. Asphalt mixtures with different levels of crushed gravel were evaluated through static and dynamic loading tests. Coarse aggregate properties were characterized through fracture surface counts, direct shear and resilient modulus tests. The results of this research indicated that coarse aggregate properties, mainly CAA have significant effect on mechanical properties of HMA.
کلمات کلیدی: Asphalt pavements, coarse aggregate angularity, mechanical properties, fatigue life, creep compliance
صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/37935/