المشاريع البحثية العلمية

الرجوع

Effect of Electric Arc Furnace Dust (EAFD) on Solidification/Stabilization of Asphalt and Asphalt Concrete Mixtures

مجال مشروع البحث–الرئيسي: العلوم الهندسية

مجال مشروع البحث–الثانوي: الطاقة المتجددة

المؤسسة العلمية: جامعة البلقاء التطبيقية

المحافظة: السلط

قيمة الدعم: د.أ 6733

سنة الدعم: 2012

حالة المشروع: منتهي مع النشر

البحث منشور: (1) Alsheyab, M. A., & Khedaywi, T. S. (2013). Effect of electric arc furnace dust (EAFD) on properties of asphalt cement mixture. Resources, Conservation and Recycling, 70, 38-43. (2) Alsheyab, M. A. (2013). SEM analysis on electron arc furnace dust (EAFD) and EAFD-asphalt mixture. Environment and Natural Resources Research, 3(4), 147. (3) Khedeywi, T. S., & Alsheyab, M. A. (2014). Laboratory investigation to evaluate the effect of electric arc furnace dust (EAFD) on properties of asphalt concrete. Environment and Natural Resources Research, 4(1), 1. (4) Alsheyab, M. A., & Khedaywi, T. S. (2016). Analysis of the effect of temperature on the resilient modulus of asphalt concrete mixed with electric arc furnace dust (EAFD). Water, Air, & Soil Pollution, 227(3), 1-6.

ملخص عن مشروع البحث: 1.Electric arc furnace dust (EAFD) is one of the by-products of steelmaking industry which has been classified as hazardous due to containing some heavy metals such as Zinc, Cobalt, Copper, Lead or Cadmium. This research aims at solving the problem of this hazardous waste by solidification/stabilization through mixing it with asphalt cement to be used for road construction. EAFD was used as an additive to the asphalt concrete mixtures with five percentages (0%, 5%, 10%, 15% and 20%) by volume of binder. Penetration, ductility, specific gravity, softening point, flash point, fire point and rotational viscosity were analyzed. It was found that while the penetration and ductility were decreasing with the increase of EAFD concentration in the binder, specific gravity, softening point, flash point, fire point and rotational viscosity were increasing. Finally it has been concluded that the results are promising for dual achievement (1) to solve an environmental problem and (2) to use the EAFD for road construction. 2.Electric Arc Furnace Dust (EAFD) is a by-product of steelmaking industry which has been classified as hazardous. The considerable amounts produced per ton of steel, estimated by 15-20 kg/ton, make it a serious environmental problem that should be addressed. One of the solution scenarios is the use of Solidification/stabilization technology and one of potential candidates is the asphalt as a widely used material in road construction. This paper had an insight view on the microstructure of EAFD and its mixture with asphalt using the scanning electron microscopy (SEM). The scanning results showed that the EAFD small particles fill the air voids in asphalt and those of bigger size get attached to the surface. This was confirmed by the specific gravity and penetration tests. https://pdfs.semanticscholar.org/10c8/90bed958a5cd8cf916856d5b2200b897dc2e.pdf 3.One of the hazardous by-products of steelmaking industry is the electric arc furnace dust EAFD. It has been estimated that per each ton of produced steel there are about 15-20 kg of EAFD. Due to containing heavy metals such as Zinc, Cobalt, Copper, Lead or Cadmium, this dust has been classified as hazardous, and therefore it should be treated appropriately to protect the environment. Solidification/stabilization was used in this study to treat this hazardous dust. One type of asphalt cement and one type of aggregate were used in this study. EAFD was used as an additive to the asphalt cement with five contents (5%, 10%, 15% and 20%) by volume of binder. Marshall specimens were prepared using the five concentrations of this material. Marshall stability, flow, unit weight, voids in mineral aggregate (VMA), air voids, voids filled with binder (VFB), and stiffness of asphalt concrete mixtures were analyzed. Test results show that stability, unit weight, voids filled with bitumen (VFB) and stiffness increase then decrease with the increasing % EAFD in the asphalt concrete mixtures. Flow increases with the increasing of % EAFD in the asphalt concrete mixtures while VMA and air voids decrease then increase with the increasing % EAFD in the asphalt concrete mixtures. A 5% EAFD content by volume of binder is found to meet the criteria of Marshall properties of asphalt mixtures. Finally it has been concluded that the results are promising for dual achievement (1) to solve an environmental problem and (2) to use the dust for road construction. http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.980.3690&rep=rep1&type=pdf 4. This research aims at solving an environmental issue caused by the electric arc furnace dust (EAFD), a hazardous waste produced as a by-product of steel-making industry. The research proposes the use of EAFD in road construction, through mixing it with asphalt concrete mixture. As the resilient modulus is one of the key parameters in pavement design, it was chosen as indicator to evaluate the asphalt concrete mixture with EAFD. Experiments were conducted at 25, 40, and 55 °C using three different loading frequencies, 1, 4, and 8 Hz, so that the results can benefit as many countries as possible with different climate conditions. Five contents of EAFD (0, 5, 10, 15, and 20 %) by volume of binder were studied. Results showed that the expected negative correlation between temperature and resilient modulus was not consistent. In particular, there was a higher response of resilient modulus for samples of asphalt concrete mixtures with more than 15 % of EAFD for temperature of 40 °C and loading frequency of 4 Hz as well as with more than 17 % of EAFD for temperatures of 40 and 55 °C and 8 Hz of loading frequency. Results also showed that the highest response of the resilient modulus was at 40 °C, both 4 and 8 Hz, and with percentages of EAFD higher than 15 %. https://agris.fao.org/agris-search/search.do?recordID=US201600126881