The Experts below are selected from a list of 300 Experts worldwide ranked by ideXlab platform
Serdal Terzi - One of the best experts on this subject based on the ideXlab platform.
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Utility of polyparaphenylene terephtalamide fiber in hot mix asphalt as a fiber
Construction and Building Materials, 2016Co-Authors: Nihat Morova, Mehmet Saltan, Serdal Terzi, Sercan Serin, D. Ozdemir Kucukcapraz, Sebnem Karahancer, Ekinhan EriskinAbstract:Abstract In this study, utility of polyparaphenylene terephtalamide (PT) was investigated in hot mix asphalt as a fiber. For this aim samples were prepared with limestone aggregate at different proportions. Marshall Stability test was applied and optimum Bitumen Content was determined. In the second stage of the study, new samples were prepared using different polyparaphenylene terephtalamide fiber (PTF) rates of 0.25%, 0.50%, 0.75%, 1.00%, 1.50%, 2.00% based on optimum Bitumen Content. When examining test results, samples which prepared using 0.25% PTF rate gave highest Marshall Stability result. At the final stage of the study, different Bitumen Contents (4.15%, 4.65% and 5.15%) were conducted for the best fiber rate (0.25%) and close to this result (0.50% and 0.75%). Thus, the effect of Bitumen Content on determined fiber rate at the second stage of the study was investigated. Also Indirect Tensile (IDT) Strength Test was performed on hot mix asphalt (HMA) samples preparing at 0.25%, 0.50% and 0.75% fiber rates and moisture sensitivities were determined. All results showed that, the best fiber rate was 0.25% and determined optimum Bitumen Content remain constant with the fiber additive for the reference samples. Besides, some sample groups which prepared using different PTF rates proved the specification limits and it was said that; PTF can be used in asphalt concrete as a fiber additive.
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Evaluation of andesite waste as mineral filler in asphaltic concrete mixture
Construction and Building Materials, 2012Co-Authors: İsmail Uzun, Serdal TerziAbstract:Abstract In the study, the use of andesite collected during the shaping process of andesite blocks in asphalt mixtures as mineral filler was investigated. Samples with limestone aggregate were prepared and the optimum Bitumen Content was then determined by the Marshall Stability Test procedure. Using optimum Bitumen Content and the same limestone aggregate and aggregate gradation as the andesite waste mineral filler (under No. 200 sieve), the mixtures were prepared and their stability values determined. When comparing all mixtures, the andesite mineral filler with 6% Bitumen Content showed the highest stability, but this stability value was less than the limestone mixtures with 4% Bitumen Content. In addition, 6% in the andesite and limestone filler Content in the samples, the optimum percentage of Bitumen was investigated. Following this, it was found that 5% Bitumen Content provided the best stability value. As a result, especially in areas where there is widespread andesite waste, if transportation costs do not exceed the cost of limestone, andesite waste can be used instead of limestone in asphalt concrete mixtures as mineral filler.
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Investigation of usability of steel fibers in asphalt concrete mixtures
Construction and Building Materials, 2012Co-Authors: Sercan Serin, Mehmet Saltan, Nihat Morova, Serdal TerziAbstract:Abstract In this study, the usability of steel fibers in order to bear the stresses occurring at the surface layer of pavement, which are directly subjected to the traffic effects, was investigated. In this context, specimens were produced and tested under Marshall Stability Test, and the optimum Bitumen Content value for the aggregates sample to be used was determined. Results showed that based on the determined value for the optimum Bitumen Content (5.5%), three specimens for each of a series of different fiber rates (0%, 0.25%, 0.50%, 0.75%, 1.0%, 1.5%, 2.0%, 2.5%) were prepared and the optimum value for fiber rate that results in the best stability value was determined as 0.75%. As a result, steel fiber additions can be used in binder course of flexible pavement because of its positive stability impact.
Nihat Morova - One of the best experts on this subject based on the ideXlab platform.
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Utility of polyparaphenylene terephtalamide fiber in hot mix asphalt as a fiber
Construction and Building Materials, 2016Co-Authors: Nihat Morova, Mehmet Saltan, Serdal Terzi, Sercan Serin, D. Ozdemir Kucukcapraz, Sebnem Karahancer, Ekinhan EriskinAbstract:Abstract In this study, utility of polyparaphenylene terephtalamide (PT) was investigated in hot mix asphalt as a fiber. For this aim samples were prepared with limestone aggregate at different proportions. Marshall Stability test was applied and optimum Bitumen Content was determined. In the second stage of the study, new samples were prepared using different polyparaphenylene terephtalamide fiber (PTF) rates of 0.25%, 0.50%, 0.75%, 1.00%, 1.50%, 2.00% based on optimum Bitumen Content. When examining test results, samples which prepared using 0.25% PTF rate gave highest Marshall Stability result. At the final stage of the study, different Bitumen Contents (4.15%, 4.65% and 5.15%) were conducted for the best fiber rate (0.25%) and close to this result (0.50% and 0.75%). Thus, the effect of Bitumen Content on determined fiber rate at the second stage of the study was investigated. Also Indirect Tensile (IDT) Strength Test was performed on hot mix asphalt (HMA) samples preparing at 0.25%, 0.50% and 0.75% fiber rates and moisture sensitivities were determined. All results showed that, the best fiber rate was 0.25% and determined optimum Bitumen Content remain constant with the fiber additive for the reference samples. Besides, some sample groups which prepared using different PTF rates proved the specification limits and it was said that; PTF can be used in asphalt concrete as a fiber additive.
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investigation of usability of basalt fibers in hot mix asphalt concrete
Construction and Building Materials, 2013Co-Authors: Nihat MorovaAbstract:Abstract In this study, the usability of basalt fibers in order to bear the stresses occurring at the surface layer of pavement, which are directly subjected to the traffic effects, was investigated. In this context, specimens were produced and tested under Marshall Stability Test, and the optimum Bitumen Content value for the aggregates sample to be used was determined. Based on the determined value for the optimum Bitumen Content (5%), three specimens for each of a series of different fiber ratios were prepared. The optimum value for fiber ratio that results in the best stability value was determined. In order to determine whether the best fiber ratio (0.50%) might result in a better stability value for other Bitumen Contents, extra specimens were prepared with different Bitumen amounts and with the best and five different fiber ratio values close to the optimum value. These specimens were tested under Marshall Stability Test and the obtained results were evaluated.
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Investigation of usability of steel fibers in asphalt concrete mixtures
Construction and Building Materials, 2012Co-Authors: Sercan Serin, Mehmet Saltan, Nihat Morova, Serdal TerziAbstract:Abstract In this study, the usability of steel fibers in order to bear the stresses occurring at the surface layer of pavement, which are directly subjected to the traffic effects, was investigated. In this context, specimens were produced and tested under Marshall Stability Test, and the optimum Bitumen Content value for the aggregates sample to be used was determined. Results showed that based on the determined value for the optimum Bitumen Content (5.5%), three specimens for each of a series of different fiber rates (0%, 0.25%, 0.50%, 0.75%, 1.0%, 1.5%, 2.0%, 2.5%) were prepared and the optimum value for fiber rate that results in the best stability value was determined as 0.75%. As a result, steel fiber additions can be used in binder course of flexible pavement because of its positive stability impact.
Sercan Serin - One of the best experts on this subject based on the ideXlab platform.
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Utility of polyparaphenylene terephtalamide fiber in hot mix asphalt as a fiber
Construction and Building Materials, 2016Co-Authors: Nihat Morova, Mehmet Saltan, Serdal Terzi, Sercan Serin, D. Ozdemir Kucukcapraz, Sebnem Karahancer, Ekinhan EriskinAbstract:Abstract In this study, utility of polyparaphenylene terephtalamide (PT) was investigated in hot mix asphalt as a fiber. For this aim samples were prepared with limestone aggregate at different proportions. Marshall Stability test was applied and optimum Bitumen Content was determined. In the second stage of the study, new samples were prepared using different polyparaphenylene terephtalamide fiber (PTF) rates of 0.25%, 0.50%, 0.75%, 1.00%, 1.50%, 2.00% based on optimum Bitumen Content. When examining test results, samples which prepared using 0.25% PTF rate gave highest Marshall Stability result. At the final stage of the study, different Bitumen Contents (4.15%, 4.65% and 5.15%) were conducted for the best fiber rate (0.25%) and close to this result (0.50% and 0.75%). Thus, the effect of Bitumen Content on determined fiber rate at the second stage of the study was investigated. Also Indirect Tensile (IDT) Strength Test was performed on hot mix asphalt (HMA) samples preparing at 0.25%, 0.50% and 0.75% fiber rates and moisture sensitivities were determined. All results showed that, the best fiber rate was 0.25% and determined optimum Bitumen Content remain constant with the fiber additive for the reference samples. Besides, some sample groups which prepared using different PTF rates proved the specification limits and it was said that; PTF can be used in asphalt concrete as a fiber additive.
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Investigation of usability of steel fibers in asphalt concrete mixtures
Construction and Building Materials, 2012Co-Authors: Sercan Serin, Mehmet Saltan, Nihat Morova, Serdal TerziAbstract:Abstract In this study, the usability of steel fibers in order to bear the stresses occurring at the surface layer of pavement, which are directly subjected to the traffic effects, was investigated. In this context, specimens were produced and tested under Marshall Stability Test, and the optimum Bitumen Content value for the aggregates sample to be used was determined. Results showed that based on the determined value for the optimum Bitumen Content (5.5%), three specimens for each of a series of different fiber rates (0%, 0.25%, 0.50%, 0.75%, 1.0%, 1.5%, 2.0%, 2.5%) were prepared and the optimum value for fiber rate that results in the best stability value was determined as 0.75%. As a result, steel fiber additions can be used in binder course of flexible pavement because of its positive stability impact.
Edward A. Cloutis - One of the best experts on this subject based on the ideXlab platform.
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Bitumen Content ESTIMATION OF ATHABASCA OIL SAND FROM BROAD BAND INFRARED REFLECTANCE SPECTRA
Canadian Journal of Chemical Engineering, 2010Co-Authors: B. Rivard, J. Feng, A. Gallie, Edward A. Cloutis, D. Lyder, P. Dougan, S. Gonzalez, D. Cox, Michael G. LipsettAbstract:Oil sand is a mixture of quartz grains, clay minerals, Bitumen, water, and minor accessory minerals. There is a need in oil sands mining operations for a robust method to estimate total Bitumen Content in real time; and so modelling of the total Bitumen Content (TBC) in Athabasca oil sands of Western Canada was undertaken on the basis of hyperspectral reflectance spectra. A selection of different Bitumen, water, and clay mineral spectral features (3.0–30.0 µm) was used to develop broad-band TBC predictive models that have good accuracy, with less than 1.5% error with respect to laboratory methods of Bitumen assay. These models are also robust, in that they are independent of mine location. Simple broad band models, based upon previously identified Gaussian features or wavelet features, provide an incremental improvement over the currently deployed industry two-band ratio model. An improved two-band model was also developed, which makes use of a combination of the same two bands but normalised to their mean. A wavelet-based, broad-band model comprised of indices and five bands, where the bands are normalised to the mean of the bands, adequately addresses the influence of water, clay, and textural variation on selected Bitumen features. This five-band model appears to produce the most robust estimator of TBC, with a dispersion of ∼1.1–1.5%, which can be applied to different sites within a mine and to different mines without additional tuning or calibration, as evidenced by regression slopes of 0.99–1.0 for modelling, validation, and blind data sets.
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Remote Bitumen Content estimation of Athabasca oil sand from hyperspectral infrared reflectance spectra using Gaussian singlets and derivative of Gaussian wavelets
Fuel, 2010Co-Authors: D. Lyder, J. Feng, B. Rivard, A. Gallie, Edward A. CloutisAbstract:Modeling of the total Bitumen Content, TBC, in Athabasca oil sands was undertaken on the basis of its hyperspectral reflectance spectra. Spectra (8 cm � 1 resolution) were obtained that covered both the short-wave infrared and thermal infrared (TIR: 3.00–30.00 lm). Two methods, Gaussian fitting and wavelet analyses, were investigated to identify useful Bitumen features as well as the best removal of the baseline. We aim to obtain the best determination of the TBC for a suitable suite of test and validation oil sands samples. The Gaussian model relied explicitly on features at 2.282 and 2.532 lm though these were only two of 10 features simultaneously fit with a quadratic baseline to the range of 2.230–2.603 lm of the spectra. The wavelet model relied on Bitumen features selected at 2.274, 2.396 and 3.725 lm that could be isolated from the baseline and noise. Both models yielded similar dispersion in their estimates of TBC (±�1–2%) while the wavelet model proved to be more robust when applied to the validation and blind data suites. We also considered the effects of using the L2 optimization (classical least-squares) and L1 optimization (minimization of largest outlier) schemes for both models. Both schemes produced similar results for the model suite of samples for TBC but the L1 was superior when applied to the validation and blind data suites. The wavelet model using the L1 optimization appeared to be quite robust producing estimates of TBC (±� 1.0–1.7%). 2009 Published by Elsevier Ltd.
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FEATURE SELECTION AND BROAD BAND Bitumen Content ESTIMATION OF ATHABASCA OIL SAND FROM INFRARED
2009Co-Authors: J. Feng, B. Rivard, A. Gallie, Edward A. CloutisAbstract:ABS TRACT The estimation of Bitumen Content in oil sands in feed stock is critical to improve the processability of ore and for effective Bitumen extraction. Broad band reflectance spectroscopy has the potential to achieve this goal in a nondestructive manner but spectral variability is known to be influenced by the water Content and mineralogy of oil sands. This study addresses these issues and defines spectral features sensitive to Bitumen and water Content using wavelet analysis. A reliable model is then established to predict Bitumen Content based on spectral indices that minimize the influence of these factors.
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Feature selection and broad band Bitumen Content estimation of Athabasca oil sand from infrared reflectance spectra
2009 First Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing, 2009Co-Authors: J. Feng, B. Rivard, A. Gallie, Edward A. CloutisAbstract:The estimation of Bitumen Content in oil sands in feed stock is critical to improve the processability of ore and for effective Bitumen extraction. Broad band reflectance spectroscopy has the potential to achieve this goal in a non-destructive manner but spectral variability is known to be influenced by the water Content and mineralogy of oil sands. This study addresses these issues and defines spectral features sensitive to Bitumen and water Content using wavelet analysis. A reliable model is then established to predict Bitumen Content based on spectral indices that minimize the influence of these factors.
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WHISPERS - Feature selection and broad band Bitumen Content estimation of Athabasca oil sand from infrared reflectance spectra
2009 First Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing, 2009Co-Authors: J. Feng, B. Rivard, A. Gallie, Edward A. CloutisAbstract:The estimation of Bitumen Content in oil sands in feed stock is critical to improve the processability of ore and for effective Bitumen extraction. Broad band reflectance spectroscopy has the potential to achieve this goal in a non-destructive manner but spectral variability is known to be influenced by the water Content and mineralogy of oil sands. This study addresses these issues and defines spectral features sensitive to Bitumen and water Content using wavelet analysis. A reliable model is then established to predict Bitumen Content based on spectral indices that minimize the influence of these factors.
Mehmet Saltan - One of the best experts on this subject based on the ideXlab platform.
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Utility of polyparaphenylene terephtalamide fiber in hot mix asphalt as a fiber
Construction and Building Materials, 2016Co-Authors: Nihat Morova, Mehmet Saltan, Serdal Terzi, Sercan Serin, D. Ozdemir Kucukcapraz, Sebnem Karahancer, Ekinhan EriskinAbstract:Abstract In this study, utility of polyparaphenylene terephtalamide (PT) was investigated in hot mix asphalt as a fiber. For this aim samples were prepared with limestone aggregate at different proportions. Marshall Stability test was applied and optimum Bitumen Content was determined. In the second stage of the study, new samples were prepared using different polyparaphenylene terephtalamide fiber (PTF) rates of 0.25%, 0.50%, 0.75%, 1.00%, 1.50%, 2.00% based on optimum Bitumen Content. When examining test results, samples which prepared using 0.25% PTF rate gave highest Marshall Stability result. At the final stage of the study, different Bitumen Contents (4.15%, 4.65% and 5.15%) were conducted for the best fiber rate (0.25%) and close to this result (0.50% and 0.75%). Thus, the effect of Bitumen Content on determined fiber rate at the second stage of the study was investigated. Also Indirect Tensile (IDT) Strength Test was performed on hot mix asphalt (HMA) samples preparing at 0.25%, 0.50% and 0.75% fiber rates and moisture sensitivities were determined. All results showed that, the best fiber rate was 0.25% and determined optimum Bitumen Content remain constant with the fiber additive for the reference samples. Besides, some sample groups which prepared using different PTF rates proved the specification limits and it was said that; PTF can be used in asphalt concrete as a fiber additive.
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Investigation of usability of steel fibers in asphalt concrete mixtures
Construction and Building Materials, 2012Co-Authors: Sercan Serin, Mehmet Saltan, Nihat Morova, Serdal TerziAbstract:Abstract In this study, the usability of steel fibers in order to bear the stresses occurring at the surface layer of pavement, which are directly subjected to the traffic effects, was investigated. In this context, specimens were produced and tested under Marshall Stability Test, and the optimum Bitumen Content value for the aggregates sample to be used was determined. Results showed that based on the determined value for the optimum Bitumen Content (5.5%), three specimens for each of a series of different fiber rates (0%, 0.25%, 0.50%, 0.75%, 1.0%, 1.5%, 2.0%, 2.5%) were prepared and the optimum value for fiber rate that results in the best stability value was determined as 0.75%. As a result, steel fiber additions can be used in binder course of flexible pavement because of its positive stability impact.
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BITUMINOUS MIX DESIGN CONSIDERATIONS IN TURKEY
2000Co-Authors: Mustafa Karaşahin, Mesut Tigdemir, Mehmet SaltanAbstract:In this study, both Marshall and Indirect tensile test equipment was used in order to find a relationship between these equipments. Specimens were prepared using Marshall mould and standard Marshall compactor. In order to determine the optimum Bitumen Content for each grading of granular materials three samples were prepared for each Bitumen Content. The samples were then tested by Marshall test equipment. After having determined the optimum Bitumen Content the samples were then prepared according to the optimum Bitumen Content. Fatigue and plastic deformation test were then carried out on the samples. Samples were then prepared for 5% optimum Bitumen Content. It was seen that the longer fatigue life was obtained at the optimum Bitumen Content as compared with the other samples. Therefore, designing the mix with Marshall equipment test results guarantee the longer fatigue life. However, as the Marshall equipment test results does not give any information about plastic deformation life, using indirect tensile test equipment for the determination of plastic deformation helps to develop better bituminous mixtures. For the covering abstract see ITRD E107185.