Research Article
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Effect of Natural Bitumen on the Performance of Hot Asphalt Mixture‏

Year 2024, Volume: 37 Issue: 3, 1154 - 1170, 01.09.2024
https://doi.org/10.35378/gujs.1282239

Abstract

For over a century, the global consumption of asphalt binder in asphalt mixture production has been substantial. In the Heet region (west of Iraq), two distinct forms of natural asphalt (NA) deposits exist: rock asphalt and sulfur spring asphalt. This study focused on using NA sourced from sulfur springs. The aim was to investigate the potential of incorporating NA into local asphalt mixtures. To achieve this, NA was heated to 163°C for varying durations. After heat treatment, laboratory tests were conducted on NA. The findings suggest that by heating NA for 20 hours, it conforms to Iraqi specifications in terms of physical properties. Furthermore, compared to conventional petroleum asphalt, treated NA showed greater resistance to temperature fluctuations, making it ideal for hotter climates. The study also found that NA enhances mechanical properties significantly. Specifically, the NA mixture recorded the highest indirect tensile strength, with a tensile strength ratio of 81.2%, a slight increase of 0.37% over traditional mixes. In summary, NA mixtures exhibit commendable performance. Given its abundance and affordability in Iraq, after considering heat treatment costs and environmental impact, NA holds promise for the future of asphalt concrete production for the construction of flexible pavement.

Supporting Institution

Baghdad University

References

  • [1] Mikolaj, J., Remek, L., Kozel, M., “Optimization of life cycle extension of asphalt concrete mixtures in regard to material properties, structural design, and economic implications”, Advances in Materials Science and Engineering, 2016: 1-9, (2016).
  • [2] Latief, R., H., “Evaluation of the performance of Glasphalt concrete mixtures for binder course”, International Journal on Advanced Science, Engineering and Information Technology, 9: 1251–1259, (2019).
  • [3] Al-bayati, A., H., K., Lateif, R., H., “Evaluating the performance of high modulus asphalt concrete mixture for base course in Iraq”, Journal of Engineering, 23: 14–33, (2017).
  • [4] Kök, B., Kuloğlu, N., “Effects of steel slag usage as aggregate on indirect tensile and creep modulus of hot mix asphalt”, Gazi University Journal of Science, 21: 97-103, (2010).
  • [5] Hatoum, A., A., Khatib, J., M., Barraj, F., Elkordi, A., “Survival analysis for asphalt pavement performance and assessment of various factors affecting fatigue cracking based on LTPP data”, Sustainability, 14: 12408, (2022).
  • [6] El-saikaly, M., A., “Study of the possibility to reuse waste plastic bags as a modifier for asphalt mixtures properties (binder course layer)”, The Islamic University of Gaza, Civil Engineering, M.Sc. Thesis, 1-107, (2013).
  • [7] Mirwald, J., Werkovits, S., Camargo, I., Maschauer, D., Hofko, B., Grothe, H., “Understanding bitumen ageing by investigation of its polarity fractions”, Construction and Building Materials, 250: 1-10, (2020).
  • [8] Aksoy, İ., C., Mutlu, M., M., Alver, Y., “Urban road network maintenance scheduling using ant colony optimization”, Gazi University Journal of Science, 34: 710-716, (2021).
  • [9] AL-Azawee, E., T., Latief, R., H., “The feasibility of using styrene-butadiene- styrene (SBS) as modifier in Iraqi bituminous binder”, Journal of Engineering Science and Technology, 15: 1596–1607, (2020).
  • [10] AL-Hamdou, H., M., H., Abed-Ali, A., H., H., Mohamed-meki, M., Z., “Fracture properties of local asphalt concrete”, Journal of Engineering, 22: 118–141, (2016).
  • [11] Barraj, F., Mahfouz, S., Kassem, H., Khatib, J., Goulias, D., Elkordi, A., “Investigation of using crushed glass waste as filler replacement in hot asphalt mixtures”, Sustainability, 15: 2241, (2023).
  • [12] Barraj, F., Khatib, J., Castro, A., Elkordi, A., “Effect of chemical warm mix additive on the properties and mechanical performance of recycled asphalt mixtures”, Buildings, 12: 874, (2022).
  • [13] Farhan, M., M., Rabeea, M., A., Muslim, R., F., Zidan, T., A., “Chemical composition (saturate fraction) of western Iraq natural bitumen”, Materials Today: Proceedings, 42: 2527–2533, (2021).
  • [14] Zhou, F., Scullion, T., “Upgraded overlay tester and its application to characterize reflection cracking resistance of asphalt mixtures”, Texas Transportation Institute, Department of Transportation, The Federal Highway Administration, Report No. FHWA/TX-04/0-4467-1, (2003).
  • [15] Meyer, R., F., De Witt, W., “Definition and world resources of natural bitumens”, US Geological Survey Bulletin, Report No. 1944, (1990).
  • [16] Liao, M., C., Chen, J., S., Airey, G., D., Wang, S., J., “Rheological behavior of bitumen mixed with Trinidad lake asphalt”, Construction and Building Materials, 66: 361–367, (2014).
  • [17] Xu, S., Huang, W., Cai, F., Huang, H., Hu, C., “Evaluation of properties of Trinidad lake asphalt and SBS-modified petroleum asphalt”, Petroleum Science and Technology, 37: 234–241, (2019).
  • [18] Yilmaz, M., Çeloǧlu, 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).
  • [19] Shi, X., Cai, L., Xu, W., Fan, J., Wang, X., “Effects of nano-silica and rock asphalt on rheological properties of modified bitumen”, Construction and Building Materials, 161: 705–714, (2018).
  • [20] Liu, G., Nielsen, E., Komacka, J., Greet, L., Ven, M., Van De, “Rheological and chemical evaluation on the ageing properties of SBS polymer modified bitumen: From the laboratory to the field”, Construction and Building Materials, 51: 244–248, (2014).
  • [21] Balik, G., Yilmaz, M., Kök, B., V., Alataş, T., “Effects of mixing temperature on the mechanical properties of hot mix asphalt”, Teknik Dergi/Technical Journal of Turkish Chamber of Civil Engineers, 30: 9221–9241, (2019).
  • [22] Li, R., Wang, P., Xue, B., Pei, J., “Experimental study on aging properties and modification mechanism of Trinidad lake asphalt modified bitumen”, Construction and Building Materials, 101: 878–883, (2015).
  • [23] Zhong, K., Yang, X., Luo, S., “Performance evaluation of petroleum bitumen binders and mixtures modified by natural rock asphalt from Xinjiang China”, Construction and Building Materials, 154: 623–631, (2017).
  • [24] Altameemi, A., A., Al-Jumaili, M., A., Mohammed, A., J., Abdul karim, A., “Studying the possibility of utilizing the vast deposits of natural asphalt in Iraq in specific uses using as little as possible manufacturing treatment”, The Iraqi Journal for Mechanical and Material Engineering, Babylon First International Engineering Conference, Special Volume: 462-488, (2016).
  • [25] Abdul-Jaleel, T., Najres, M., “Oxidation influence on the chemical content and some rheologicaly properties for natural asphalt to Abu aljeer –Alanbar”, Iraqi Journal of Studies, 4: 1-15, (2012).
  • [26] Abdul-Jaleel, T., Salem, J., W., Najres, A., M., “A new separation, fractionation and improving of Abu- Aljeer asphalt”, Anbar Journal of Engineering Science, 7: 31-41, (2016).
  • [27] Muttar, A., A., Zedan, T., A., Mahmood, B., A., “Analytical comparison study for asphalt and water of Heet sulphurous springs”, Journal of University of Anbar for Pure Science, 3: 45-56, (2009).
  • [28] General Specification for Roads and Bridges (SCRB), Section R/9, Hot-Mix Asphalt Concrete Pavement, Revised Edition, State Corporation of Roads and Bridges, Ministry of Housing and Construction, Republic of Iraq, (2003).
  • [29] Abdullah, R., S., Awad, M., A., Mahmoud B., A., “Study and analysis of chemical structure for natural and industrial asphalt and ability to enhancement their properties”, Journal of Education and Scientific Studies Chemistry Science, 16: 53-74, (2020).
  • [30] Petersen, J., C., “A review of the fundamentals of asphalt oxidation: chemical, physicochemical, physical property, and durability relationships”, Transport Research Board Circular. E-C140, (2009).
  • [31] Jinan S., “Modified asphalt and SMA pavement” China Communications Press, Beijing, (1999).
  • [32] Jinan S., “Road asphalt and asphalt mixture” China Communications Press, Beijing, (2001).
  • [33] Sakib, N., Bhasin, A., Islam, M., K., Khan, K., and Khan, M., I., “A review of the evolution of technologies to use sulphur as a pavement construction material”, International Journal of Pavement Engineering, 22: 1–12, (2019).
  • [34] Behnood, A., Modiri, G., M., Gozali Asl, F., and Ameri, M, “Effects of copper slag and recycled concrete aggregate on the properties of CIR mixes with bitumen emulsion, rice husk ash, Portland cement and fly ash”, Construction and Building Material, 96: 172–180, (2015).
  • [35] Ameri, M., and Behnood, A., “Laboratory studies to investigate the properties of CIR mixes containing steel slag as a substitute for virgin aggregates”, Construction and Building Material, 26: 475–480, (2012).
  • [36] Adams, J. J., “Asphaltene Adsorption, a literature review”, Energy Fuels, 28: 2831–56, (2014).
  • [37] Dudášová, D., Simon, S., Hemmingsen, P., V., Sjöblom, J., “Study of asphaltenes adsorption onto different minerals and clays: part 1. experimental adsorption with UV depletion detection”, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 317: 1–9, (2008).
  • [38] Khusnutdinov, I., Goncharova, I., Safiulina, A., “Extractive deasphalting as a method of obtaining asphalt binders and low-viscosity deasphalted hydrocarbon feedstock from natural bitumen”, Egyptian Journal of Petroleum, 30: 69–73, (2021).
  • [39] U.S. Bureau of Labor Statistics, U.S. Department of Labor, https://www.bls.gov/data/.
  • [40] Sahu, R., Byung Jin Song, B., J., Im, J., S., Jeon, Y., Lee, C., W., “A review of recent advances in catalytic hydrocracking of heavy residues”, Journal of Industrial and Engineering Chemistry, 27: 12-24, (2015).
  • [41] Sorrell, S., Speirs, J., Bentley, R., Brandt, A., Miller, R., “Global oil depletion: A review of the evidence”, Energy Policy, 38: 5290-5295, (2010).
  • [42] Anupam, K., Akinmade, D., Kasbergen, C., Erkens, S., Adebiyi, F., “A state-of-the-art review of natural bitumen in pavement: underlining challenges and the way forward”, Journal of Cleaner Production, 382: 134957, (2023).
  • [43] Adday, F., A., “Study of reducing the environmental impact of Co2 emissions of flexible Pavement materials: A critical review”, International Journal of Development Research, 9: 26883–26889, (2019).
  • [44] Zhang, J., Chen, M., He, Y., You, X., J., Zhao, W., Ling, M., Q., “Discovery of the tectono-strata-bound type natural asphalite in the Guangyuan, Sichuan Province”, Geology in China, 50: 289–290, (2023).
  • [45] Zhang, X., Zeng, Y., Feng, Y., Zhang, C., Zhang, L., "Carbon emissions analysis of producing modified asphalt with natural asphalt”, Green Processing and Synthesis, 12: 20228146, (2023).
  • [46] Sobhi, S., Yousefi, A., Behnood, A., “The effects of Gilsonite and Sasobit on the mechanical properties and durability of asphalt mixtures”, Construction and Building Materials, 238: 117676, (2020).
  • [47] Yilmaz, M., Yamaç, Ö., E., “Evaluation of Gilsonite and Styrene-Butadiene-Styrene composite usage in bitumen modification on the mechanical properties of hot mix asphalts”, Journal of Materials in Civil Engineering, 29, (2017).
  • [48] Sianturi, F., N., M., Sulaiman, S., “Performance analysis of a porous asphalt mixture with the use of concrete waste as a coarse aggregate and the addition of gilsonite materials”, IOP Conference Series: Materials Science and Engineering, 732(1), (2020).
Year 2024, Volume: 37 Issue: 3, 1154 - 1170, 01.09.2024
https://doi.org/10.35378/gujs.1282239

Abstract

References

  • [1] Mikolaj, J., Remek, L., Kozel, M., “Optimization of life cycle extension of asphalt concrete mixtures in regard to material properties, structural design, and economic implications”, Advances in Materials Science and Engineering, 2016: 1-9, (2016).
  • [2] Latief, R., H., “Evaluation of the performance of Glasphalt concrete mixtures for binder course”, International Journal on Advanced Science, Engineering and Information Technology, 9: 1251–1259, (2019).
  • [3] Al-bayati, A., H., K., Lateif, R., H., “Evaluating the performance of high modulus asphalt concrete mixture for base course in Iraq”, Journal of Engineering, 23: 14–33, (2017).
  • [4] Kök, B., Kuloğlu, N., “Effects of steel slag usage as aggregate on indirect tensile and creep modulus of hot mix asphalt”, Gazi University Journal of Science, 21: 97-103, (2010).
  • [5] Hatoum, A., A., Khatib, J., M., Barraj, F., Elkordi, A., “Survival analysis for asphalt pavement performance and assessment of various factors affecting fatigue cracking based on LTPP data”, Sustainability, 14: 12408, (2022).
  • [6] El-saikaly, M., A., “Study of the possibility to reuse waste plastic bags as a modifier for asphalt mixtures properties (binder course layer)”, The Islamic University of Gaza, Civil Engineering, M.Sc. Thesis, 1-107, (2013).
  • [7] Mirwald, J., Werkovits, S., Camargo, I., Maschauer, D., Hofko, B., Grothe, H., “Understanding bitumen ageing by investigation of its polarity fractions”, Construction and Building Materials, 250: 1-10, (2020).
  • [8] Aksoy, İ., C., Mutlu, M., M., Alver, Y., “Urban road network maintenance scheduling using ant colony optimization”, Gazi University Journal of Science, 34: 710-716, (2021).
  • [9] AL-Azawee, E., T., Latief, R., H., “The feasibility of using styrene-butadiene- styrene (SBS) as modifier in Iraqi bituminous binder”, Journal of Engineering Science and Technology, 15: 1596–1607, (2020).
  • [10] AL-Hamdou, H., M., H., Abed-Ali, A., H., H., Mohamed-meki, M., Z., “Fracture properties of local asphalt concrete”, Journal of Engineering, 22: 118–141, (2016).
  • [11] Barraj, F., Mahfouz, S., Kassem, H., Khatib, J., Goulias, D., Elkordi, A., “Investigation of using crushed glass waste as filler replacement in hot asphalt mixtures”, Sustainability, 15: 2241, (2023).
  • [12] Barraj, F., Khatib, J., Castro, A., Elkordi, A., “Effect of chemical warm mix additive on the properties and mechanical performance of recycled asphalt mixtures”, Buildings, 12: 874, (2022).
  • [13] Farhan, M., M., Rabeea, M., A., Muslim, R., F., Zidan, T., A., “Chemical composition (saturate fraction) of western Iraq natural bitumen”, Materials Today: Proceedings, 42: 2527–2533, (2021).
  • [14] Zhou, F., Scullion, T., “Upgraded overlay tester and its application to characterize reflection cracking resistance of asphalt mixtures”, Texas Transportation Institute, Department of Transportation, The Federal Highway Administration, Report No. FHWA/TX-04/0-4467-1, (2003).
  • [15] Meyer, R., F., De Witt, W., “Definition and world resources of natural bitumens”, US Geological Survey Bulletin, Report No. 1944, (1990).
  • [16] Liao, M., C., Chen, J., S., Airey, G., D., Wang, S., J., “Rheological behavior of bitumen mixed with Trinidad lake asphalt”, Construction and Building Materials, 66: 361–367, (2014).
  • [17] Xu, S., Huang, W., Cai, F., Huang, H., Hu, C., “Evaluation of properties of Trinidad lake asphalt and SBS-modified petroleum asphalt”, Petroleum Science and Technology, 37: 234–241, (2019).
  • [18] Yilmaz, M., Çeloǧlu, 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).
  • [19] Shi, X., Cai, L., Xu, W., Fan, J., Wang, X., “Effects of nano-silica and rock asphalt on rheological properties of modified bitumen”, Construction and Building Materials, 161: 705–714, (2018).
  • [20] Liu, G., Nielsen, E., Komacka, J., Greet, L., Ven, M., Van De, “Rheological and chemical evaluation on the ageing properties of SBS polymer modified bitumen: From the laboratory to the field”, Construction and Building Materials, 51: 244–248, (2014).
  • [21] Balik, G., Yilmaz, M., Kök, B., V., Alataş, T., “Effects of mixing temperature on the mechanical properties of hot mix asphalt”, Teknik Dergi/Technical Journal of Turkish Chamber of Civil Engineers, 30: 9221–9241, (2019).
  • [22] Li, R., Wang, P., Xue, B., Pei, J., “Experimental study on aging properties and modification mechanism of Trinidad lake asphalt modified bitumen”, Construction and Building Materials, 101: 878–883, (2015).
  • [23] Zhong, K., Yang, X., Luo, S., “Performance evaluation of petroleum bitumen binders and mixtures modified by natural rock asphalt from Xinjiang China”, Construction and Building Materials, 154: 623–631, (2017).
  • [24] Altameemi, A., A., Al-Jumaili, M., A., Mohammed, A., J., Abdul karim, A., “Studying the possibility of utilizing the vast deposits of natural asphalt in Iraq in specific uses using as little as possible manufacturing treatment”, The Iraqi Journal for Mechanical and Material Engineering, Babylon First International Engineering Conference, Special Volume: 462-488, (2016).
  • [25] Abdul-Jaleel, T., Najres, M., “Oxidation influence on the chemical content and some rheologicaly properties for natural asphalt to Abu aljeer –Alanbar”, Iraqi Journal of Studies, 4: 1-15, (2012).
  • [26] Abdul-Jaleel, T., Salem, J., W., Najres, A., M., “A new separation, fractionation and improving of Abu- Aljeer asphalt”, Anbar Journal of Engineering Science, 7: 31-41, (2016).
  • [27] Muttar, A., A., Zedan, T., A., Mahmood, B., A., “Analytical comparison study for asphalt and water of Heet sulphurous springs”, Journal of University of Anbar for Pure Science, 3: 45-56, (2009).
  • [28] General Specification for Roads and Bridges (SCRB), Section R/9, Hot-Mix Asphalt Concrete Pavement, Revised Edition, State Corporation of Roads and Bridges, Ministry of Housing and Construction, Republic of Iraq, (2003).
  • [29] Abdullah, R., S., Awad, M., A., Mahmoud B., A., “Study and analysis of chemical structure for natural and industrial asphalt and ability to enhancement their properties”, Journal of Education and Scientific Studies Chemistry Science, 16: 53-74, (2020).
  • [30] Petersen, J., C., “A review of the fundamentals of asphalt oxidation: chemical, physicochemical, physical property, and durability relationships”, Transport Research Board Circular. E-C140, (2009).
  • [31] Jinan S., “Modified asphalt and SMA pavement” China Communications Press, Beijing, (1999).
  • [32] Jinan S., “Road asphalt and asphalt mixture” China Communications Press, Beijing, (2001).
  • [33] Sakib, N., Bhasin, A., Islam, M., K., Khan, K., and Khan, M., I., “A review of the evolution of technologies to use sulphur as a pavement construction material”, International Journal of Pavement Engineering, 22: 1–12, (2019).
  • [34] Behnood, A., Modiri, G., M., Gozali Asl, F., and Ameri, M, “Effects of copper slag and recycled concrete aggregate on the properties of CIR mixes with bitumen emulsion, rice husk ash, Portland cement and fly ash”, Construction and Building Material, 96: 172–180, (2015).
  • [35] Ameri, M., and Behnood, A., “Laboratory studies to investigate the properties of CIR mixes containing steel slag as a substitute for virgin aggregates”, Construction and Building Material, 26: 475–480, (2012).
  • [36] Adams, J. J., “Asphaltene Adsorption, a literature review”, Energy Fuels, 28: 2831–56, (2014).
  • [37] Dudášová, D., Simon, S., Hemmingsen, P., V., Sjöblom, J., “Study of asphaltenes adsorption onto different minerals and clays: part 1. experimental adsorption with UV depletion detection”, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 317: 1–9, (2008).
  • [38] Khusnutdinov, I., Goncharova, I., Safiulina, A., “Extractive deasphalting as a method of obtaining asphalt binders and low-viscosity deasphalted hydrocarbon feedstock from natural bitumen”, Egyptian Journal of Petroleum, 30: 69–73, (2021).
  • [39] U.S. Bureau of Labor Statistics, U.S. Department of Labor, https://www.bls.gov/data/.
  • [40] Sahu, R., Byung Jin Song, B., J., Im, J., S., Jeon, Y., Lee, C., W., “A review of recent advances in catalytic hydrocracking of heavy residues”, Journal of Industrial and Engineering Chemistry, 27: 12-24, (2015).
  • [41] Sorrell, S., Speirs, J., Bentley, R., Brandt, A., Miller, R., “Global oil depletion: A review of the evidence”, Energy Policy, 38: 5290-5295, (2010).
  • [42] Anupam, K., Akinmade, D., Kasbergen, C., Erkens, S., Adebiyi, F., “A state-of-the-art review of natural bitumen in pavement: underlining challenges and the way forward”, Journal of Cleaner Production, 382: 134957, (2023).
  • [43] Adday, F., A., “Study of reducing the environmental impact of Co2 emissions of flexible Pavement materials: A critical review”, International Journal of Development Research, 9: 26883–26889, (2019).
  • [44] Zhang, J., Chen, M., He, Y., You, X., J., Zhao, W., Ling, M., Q., “Discovery of the tectono-strata-bound type natural asphalite in the Guangyuan, Sichuan Province”, Geology in China, 50: 289–290, (2023).
  • [45] Zhang, X., Zeng, Y., Feng, Y., Zhang, C., Zhang, L., "Carbon emissions analysis of producing modified asphalt with natural asphalt”, Green Processing and Synthesis, 12: 20228146, (2023).
  • [46] Sobhi, S., Yousefi, A., Behnood, A., “The effects of Gilsonite and Sasobit on the mechanical properties and durability of asphalt mixtures”, Construction and Building Materials, 238: 117676, (2020).
  • [47] Yilmaz, M., Yamaç, Ö., E., “Evaluation of Gilsonite and Styrene-Butadiene-Styrene composite usage in bitumen modification on the mechanical properties of hot mix asphalts”, Journal of Materials in Civil Engineering, 29, (2017).
  • [48] Sianturi, F., N., M., Sulaiman, S., “Performance analysis of a porous asphalt mixture with the use of concrete waste as a coarse aggregate and the addition of gilsonite materials”, IOP Conference Series: Materials Science and Engineering, 732(1), (2020).
There are 48 citations in total.

Details

Primary Language English
Subjects Engineering
Journal Section Civil Engineering
Authors

Fatima Ahmed 0009-0009-4023-2264

Roaa Latief 0000-0001-8726-5711

Amjad Albayati 0000-0003-0497-9060

Early Pub Date January 15, 2024
Publication Date September 1, 2024
Published in Issue Year 2024 Volume: 37 Issue: 3

Cite

APA Ahmed, F., Latief, R., & Albayati, A. (2024). Effect of Natural Bitumen on the Performance of Hot Asphalt Mixture‏. Gazi University Journal of Science, 37(3), 1154-1170. https://doi.org/10.35378/gujs.1282239
AMA Ahmed F, Latief R, Albayati A. Effect of Natural Bitumen on the Performance of Hot Asphalt Mixture‏. Gazi University Journal of Science. September 2024;37(3):1154-1170. doi:10.35378/gujs.1282239
Chicago Ahmed, Fatima, Roaa Latief, and Amjad Albayati. “Effect of Natural Bitumen on the Performance of Hot Asphalt Mixture‏”. Gazi University Journal of Science 37, no. 3 (September 2024): 1154-70. https://doi.org/10.35378/gujs.1282239.
EndNote Ahmed F, Latief R, Albayati A (September 1, 2024) Effect of Natural Bitumen on the Performance of Hot Asphalt Mixture‏. Gazi University Journal of Science 37 3 1154–1170.
IEEE F. Ahmed, R. Latief, and A. Albayati, “Effect of Natural Bitumen on the Performance of Hot Asphalt Mixture‏”, Gazi University Journal of Science, vol. 37, no. 3, pp. 1154–1170, 2024, doi: 10.35378/gujs.1282239.
ISNAD Ahmed, Fatima et al. “Effect of Natural Bitumen on the Performance of Hot Asphalt Mixture‏”. Gazi University Journal of Science 37/3 (September 2024), 1154-1170. https://doi.org/10.35378/gujs.1282239.
JAMA Ahmed F, Latief R, Albayati A. Effect of Natural Bitumen on the Performance of Hot Asphalt Mixture‏. Gazi University Journal of Science. 2024;37:1154–1170.
MLA Ahmed, Fatima et al. “Effect of Natural Bitumen on the Performance of Hot Asphalt Mixture‏”. Gazi University Journal of Science, vol. 37, no. 3, 2024, pp. 1154-70, doi:10.35378/gujs.1282239.
Vancouver Ahmed F, Latief R, Albayati A. Effect of Natural Bitumen on the Performance of Hot Asphalt Mixture‏. Gazi University Journal of Science. 2024;37(3):1154-70.