TR
EN
Effect of Bitumen Grade, Bitumen Percentage and Mineral Binders on Mixture Properties in Foam Bitumen-Stabilized RAP Materials
Abstract
The rates of using reclaimed asphalt pavement (RAP) materials in road construction work depend as much on the quality of the recycled material as on the effects of the additives blended with these materials to the mixture. For asphalt cold recycling, which can be made with different methods and additives, the optimum amount of water in the mixture and the cure that develops accordingly, the correct compaction of the mixture is two important aspects in terms of pavement performance. For this reason, different bitumen grades, different bitumen percentages and mixtures with different mineral binders were prepared for cold recycle with foam bitumen and optimum water requirement, bulk specific gravity values of the productions and variation of the heights of the Marshall briquettes were investigated. Productions made with cement, lime and fly ash, which are used as mineral binders, change of California Bearing Ratio values were observed. In the productions, 4 types of penetration bitumen (50/70-70/100-100/150-160/220) and the effect of using different percentages of them were revealed. Results showed that decreased bitumen penetration, increased bitumen percentage and increased RAP material percentage made it difficult to compact the material and the optimum water percentage was directly affected by mineral binders.
Keywords
Supporting Institution
Karayolları Genel Müdürlüğü, SDÜ BAP
Project Number
KGM-ARGE/2017-1, 4939-D1-17
Thanks
This study was supported by SDU (Süleyman Demirel University) scientific research project 4939-D1-17 and KGM-ARGE/2017-1 KGM (General Directorate of highways) project.
References
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Details
Primary Language
English
Subjects
Civil Engineering
Journal Section
Research Article
Publication Date
June 30, 2020
Submission Date
April 24, 2020
Acceptance Date
June 11, 2020
Published in Issue
Year 2020 Volume: 2 Number: 1