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Experimental Investigation of Usability of Treatment Sud Ash with Road Filling Materials in Highways

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  • Mehmet Hayrullah Akyıldız

    (Department of Civil Engineering, Faculty of Engineering, University of Dicle, 21280 Diyarbakır, Turkey)

  • Seda Yön

    (Department of Civil Engineering, Faculty of Engineering, University of Dicle, 21280 Diyarbakır, Turkey)

Abstract

Increasing environmental pollution due to the rapid increase in the world population is one of the most important problems of humanity, perhaps even the first. Environmental elements that are vital for living things air, soil and water are becoming more polluted and unusable day by day. For this reason, various improvement studies are carried out in these areas. One of them is wastewater treatment plants built to control water pollution. While the water treated in the sedimentation ponds in these facilities is recycled into nature, it leaves waste treatment sludge behind. These waste sludges collected in a certain place are destroyed by various methods such as composting, drying or incineration. In previous studies, the usability of sewage sludge ash in soil improvement was investigated. In this study, the usability of sewage sludge ash as road filling material was investigated (Ash was added to the clay soil in determined percentages. These percentages are respectively; 0%, 2.5%, 5%, 7.5%, 10%, 12.5% and 15%). Treatment sludge ash was obtained from Bursa Fluidized Bed Sludge Incineration and Energy Recovery Facility. Then, the samples prepared by adding treatment sludge ash to the clay soil at certain rates were subjected to the CBR test with the Standard Proctor test. The values obtained as a result of the experiments were compared with the values given in the Highways Technical Specifications and it was determined whether they were suitable as a road filling material. The engineering properties of the soil used indicate that the soil is weak (clay soil). The treatment sludge ash added as an additive has improved all the properties of the soil to a certain extent.

Suggested Citation

  • Mehmet Hayrullah Akyıldız & Seda Yön, 2023. "Experimental Investigation of Usability of Treatment Sud Ash with Road Filling Materials in Highways," Sustainability, MDPI, vol. 15(5), pages 1-9, March.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:5:p:4593-:d:1087564
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    References listed on IDEAS

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    1. Ahmetović, Elvis & Ibrić, Nidret & Kravanja, Zdravko, 2014. "Optimal design for heat-integrated water-using and wastewater treatment networks," Applied Energy, Elsevier, vol. 135(C), pages 791-808.
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