TY  - JOUR
TI  - INVESTIGATION OF THE EFFECT OF AGGREGATE SPECIFIC GRAVITY ON OPTIMUM BITUMEN CONTENT OF HOT MIX ASPHALT
AB  - In this study, effect of aggregate specific gravity, which is directly related to origin of aggregates used in hot mix asphalt on optimum bitumen content, indirect tensile strength and tensile strength ratio of hot mix asphalt, was investigated. Specific gravity (SG) values of one kind of limestone aggregate were calculated according to Turkish Standard (TS), American Society for Testing and Materials (ASTM) and American Association of State Highway and Transportation Officials (AASHTO) standards, separately. Although one kind of limestone aggregate and 50/70 penetration grade bitumen are used in the mixtures, different values were obtained in terms of optimum bitumen content, indirect tensile strength and moisture sensitivity due to differences in the specific gravity values of the aggregates.  Optimum bitumen contents were found by using TS, ASTM and AASHTO standards as 5.03%, 4.75% and 4.59%, respectively. According to the cost – benefit analysis, it can be said that changes in aggregate specific gravity values, which were calculated, based on different standards provide economic benefit. Overall, the results indicated that specific gravity values of one kind of limestone aggregate used in hot mix asphalt have significantly affected optimum bitumen content and indirect tensile strength of the mixtures.
AU  - Saltan, Mehmet
AU  - Karadağ, Öznur
AU  - GÖKALP, İslam
AU  - Kaçaroğlu, Gizem
AU  - UZ, Volkan Emre
DO  - 10.21923/jesd.1023895
PY  - 2022
JO  - Mühendislik Bilimleri ve Tasarım Dergisi
VL  - 10
IS  - 2
SN  - 1308-6693
SP  - 453
EP  - 465
DB  - TRDizin
UR  - http://search/yayin/detay/1128920
ER  -