Evaluation of high temperature performance of SBS plus Gilsonite modified binder

Download
index.pdf
2011-10-01
KÖK, BAHA VURAL
YILMAZ, MEHMET
Güler, Murat
Show full item record
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
149
views
0
downloads
SBS is a widely used polymer modifier for asphalt binders to improve the performance properties of hot mix asphalt. SBS is nearly indispensable when the binder properties do not satisfy the specification requirements under hot service temperatures. One of the concerns in using such additives, however, is the increased cost especially for large-sized construction projects. If a natural modifier can be used to replace some portion of industrial modifier products, such as SBS, it would significantly help reduce the cost of pavement construction. In this study, Gilsonite, a natural asphalt, is used as a binder modifier to reduce the SBS content based on a series of rheological testing. While studies on various properties of binder that is modified only by Gilsonite are common, we investigate the effect of combining SBS and Gilsonte in the same base binder. In the first phase, the binders modified individually with SBS and Gilsonite are evaluated in terms of based on the outcomes of dynamic shear rheometer and rotational viscosimeter tests. Then, the asphalt binders including both SBS and Gilsonite at different contents are subjected to the same rheological testing. The results show that around 3-4% times more Gilsonite is needed to replace 1% of SBS when the two modifiers are mixed in the same binder depending on the Gilsonite/SBS ratio selected. Besides, the viscosity of modified binders with a percent of SBS replaced with Gilsonite is always lower than that of SBS-only modified binder. It is suggested that Gilsonite can be used as an alternative modifier to reduce the cost of asphalt mixture production and compaction in the field.
Fuel Technology, Organic Chemistry, Energy Engineering and Power Technology, General Chemical Engineering
https://hdl.handle.net/11511/35395
Department of Civil Engineering, Article

Suggestions

Utilization of fine coal tailings by flotation using ionic reagents
Sis, H; Ozbayoglu, G; Sarikaya, M (Informa UK Limited, 2004-08-01)
Fatty acid type ionic collectors were used as an alternative to conventional oily collectors, kerosene, and pine oil mixture in the flotation of coal tailing with 46.1% ash. The conventional collectors could not reduce the ash content of the concentrate below 22%. On the other hand, ionic collectors were found to be significantly better at reducing the ash content down to 13%. It was concluded that despite their lower flotation yield and higher consumptions, certain ionic collectors could be used successful...
Sensitivity Analysis of Major Drilling Parameters on Cuttings Transport during Drilling Highly-inclined Wells
Ozbayoglu, E. M.; Miska, S. Z.; Takach, N.; Reed, T. (Informa UK Limited, 2009-01-01)
In this study, a layered cuttings transport model is developed for high-angle and horizontal wells, which can be used for incompressible non-Newtonian fluids as well as compressible non-Newtonian fluids (i.e., foams). The effects of major drilling parameters, such as flow rate, rate of penetration, fluid density, viscosity, gas ratio, cuttings size, cuttings density, wellbore inclination and eccentricity of the drillsting on cuttings transport efficiency are analyzed. The major findings from this study are,...
Investigation of combustion process through horizontal wells
Bağcı, Ali Suat (Informa UK Limited, 2005-04-15)
Dry combustion was accomplished with the application of different horizontal well configurations in a 3-D model using high gravity oil. Seven experiments using Raman crude oil (18 degrees API) were carried out in the laboratory with a 40 cm square 3-D model having a thickness of 15 cm. Five different well configurations were applied to recover Raman crude oil. The model was packed by tamping a mixture of crushed limestone, water and crude oil. A total of 36 thermocouples were used at the top, center and bot...
Determination of Rheological Models for Drilling Fluids (A Statistical Approach)
Kök, Mustafa Verşan (Informa UK Limited, 2004-01-16)
A rheological model conventionally characterizes non-Newtonian drilling fluids. Parameters of the rheological models are estimated by explicitly solving the required number of equations simultaneously. Rheological models are stochastic and this study considers only the deterministic part of the model. Observed data is accepted as arising from randomness due to the system. A nonlinear least squares method is applied to readings of 6 standard Fann viscometer speeds in order to estimate the models' parameters....
PREDICTION OF BED MATERIAL ACTIVITY FROM CHANGES IN CARBON-DIOXIDE CONCENTRATION FOLLOWING COAL PARTICLE INJECTION IN THE FLUIDIZED-BED REACTOR
VURAL, H (Elsevier BV, 1994-01-01)
An electrically heated laboratory scale fluidized bed reactor was used for measurement of carbon dioxide concentrations from the devolatilization of bituminous coal under conditions pertinent to a large scale atmospheric pressure fluidized bed combustor (AFBC). Feeding a few particles into the bed, which contained 1 or 2 g of char, produced an increase in CO2 concentration. The quantity of CO2 released from the fluidized bed was found to be a function of fluidizing solid material, as well as the bed tempera...
Citation Formats
B. V. KÖK, M. YILMAZ, and M. Güler, “Evaluation of high temperature performance of SBS plus Gilsonite modified binder,” FUEL, pp. 3093–3099, 2011, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/35395.
METU IIS - Integrated Information Service open@metu.edu.tr