DETERMINATION OF RHEOLOGICAL PROPERTIES OF POLYMER AND NATURAL ASPHALTS MODIFIED BINDERS AFTER STORAGE STABILITY TEST

Year 2015, Volume: 33 Issue: 2, 157 - 165, 01.06.2015

Mehmet Yılmaz Baha Vural Kök Özge Erdoğan Yamaç

Abstract

In this study, the storage stabilities of modified bitumen prepared with additive of styrene-butadiene-styrene (SBS), Iranian Gilsonite (IG) and American Gilsonite (AG) were investigated. The modified bitumen prepared by mixing each additive in three different ratios to B 160/220 bitumen have been subject to storage stability experiment in accordance with the EN 13399 standard in order to determine the effects of the additive materials. Penetration, softening point and rotational viscosimeter experiments have been applied to the samples. Thus, the additive material that is most suitable in terms of storability was tried to be determined. It has been determined that the penetration, softening point and viscosity values of samples acquired from the top part of the tube was greater due to the polymer accumulation at the top part as a result of the penetration softening point and viscosity experiments carried out on samples prepared with SBS following storage stability. In this study, it was determined that natural asphalts are more suited than SBS in terms of storage stability.

Keywords

Storage stability, modification, styrene-butadiene-styrene, American gilsonite, Iranian gilsonite.

References

• [1] Janoo V.C., Korhonen C., “Performance Testing of Hot-Mix Asphalt Aggregates”, US Army Corps of Engineering Project, Number: 99-20, 1999.
• [2] Roque R., Birgisson B., Drakos C., et.al., “Guidelines for Use of Modified Binders”, Florida Department of Transportation Project, Number: 4910-4504-964-12, 2005.
• [3] Şengöz B, Işıkyakar G., “Evaluation of the Properties and Microstructure of SBS and EVA Polymer Modified Bitumen”, Construction and Building Materials, 22, 9, 1897-1905, 2008.
• [4] Hamidi H., “Stiffness Modulus and Permanent Deformation Characteristics of Asphalt Mix Containing Gilsonite”, PhD Thesis, Bandung Technology Institute, 1998.
• [5] Liu J., Li P., “Experimental Study on Gilsonite-Modified Asphalt”, Proceeding of the 2008 Airfield and Highway Pavement Specialty Conference, Washington, 2008, 222-8.
• [6] Kök B.V., Yilmaz M., Güler M., “Evaluation of High Temperature Performance of SBS + Gilsonite Modified Binder”, Fuel, 90, 10, 3093-3099, 2011.
• [7] Aflaki S., Tabatabaee N., “Proposals for Modification of Iranian Bitumen to Meet the Climatic Requirements of Iran”, Construction and Building Materials, 23, 6, 2141–2150, 2009.
• [8] Ameri M., Mansourian A., Ashani, S.S., et. al., “Technical Study on the Iranian Gilsonite as an Additive for Modification of Asphalt Binders Used in Pavement Construction”, Construction and Building Materials, 25, 3, 1379-1387, 2011.
• [9] Ameri M., Mansourian A., Sheikhmotevali A. H., “Investigating Effects of Ethylene Vinyl Acetate and Gilsonite Modifiers Upon Performance of Base Bitumen Using Superpave Tests Methodology”, Construction and Building Materials, 36, 1001-1007, 2012.
• [10] Yılmaz M., Kök B.V., Kuloğlu N., ve diğerleri, “Elastomer Türü Polimerler ile Modifiye Edilmiş Bitümlü Bağlayıcıların Depolama Stabilitelerinin ve Reolojik Özelliklerinin İncelenmesi”, DEÜ Mühendislik Fakültesi Fen ve Mühendislik Dergisi, 15, 1, 67-77, 2013.
• [11] Yılmaz M., Çeloğlu M.E., “Effects of SBS and Different Natural Asphalts on the Properties of Bituminous Binders and Mixtures”, Construction and Building Materials, 44, 533-540, 2013.
• [12] Yalçın E., “Filler Olarak Kireç Kullanımının Modifiye Bitümlerle Hazırlanan Karışımların Performansına Etkisinin İncelenmesi”, Yüksek Lisans Tezi, Fırat Üniversitesi Fen Bilimleri Enstitüsü, 2014.
• [13] EN 13399, “Bitumen and Bituminous Binders - Determination of Storage Stability of Modified Bitumen”, European Standard, p.6, 2003.
• [14] TS 118 EN 1426, “Bitümler ve bitümlü bağlayıcılar – İğne batma derinliği tayini”, Türk Standartları Enstitüsü, Ankara, 12 s., 2002.
• [15] TS 120 EN 1427, “Bitümler ve bitümlü bağlayıcılar- Yumuşama noktası tayini – Halka ve bilya metodu”, Türk Standartları Enstitüsü, Ankara., 12 s., 2002.
• [16] ASTM D 4402, “Standart Test Method for Viscosity Determination of Asphalt at Elevated Temperatures Using a Rotational Viscometer”.
• [17] Karayolları Genel Müdürlüğü, “Karayolları Teknik Şartnamesi”, Ankara, 2013.