Heidari Forozabadi, Hamed, Khabiri, Mohammad, Barkhordari Bafghi, Kazem, Miti Ku, Dabessa Ayantu. (1402). Use of Ceramic-Industry Wastewater in Sandy Subgrade Stabilization by Deep Mixing Method. هنرهای کاربردی, 11(3), 1-17. doi: 10.22075/jrce.2022.26315.1614
Hamed Heidari Forozabadi; Mohammad Mahdi Khabiri; Kazem Barkhordari Bafghi; Dabessa Ayantu Miti Ku. "Use of Ceramic-Industry Wastewater in Sandy Subgrade Stabilization by Deep Mixing Method". هنرهای کاربردی, 11, 3, 1402, 1-17. doi: 10.22075/jrce.2022.26315.1614
Heidari Forozabadi, Hamed, Khabiri, Mohammad, Barkhordari Bafghi, Kazem, Miti Ku, Dabessa Ayantu. (1402). 'Use of Ceramic-Industry Wastewater in Sandy Subgrade Stabilization by Deep Mixing Method', هنرهای کاربردی, 11(3), pp. 1-17. doi: 10.22075/jrce.2022.26315.1614
Heidari Forozabadi, Hamed, Khabiri, Mohammad, Barkhordari Bafghi, Kazem, Miti Ku, Dabessa Ayantu. Use of Ceramic-Industry Wastewater in Sandy Subgrade Stabilization by Deep Mixing Method. هنرهای کاربردی, 1402; 11(3): 1-17. doi: 10.22075/jrce.2022.26315.1614

Use of Ceramic-Industry Wastewater in Sandy Subgrade Stabilization by Deep Mixing Method

Journal of Rehabilitation in Civil Engineering
مقاله 1، دوره 11، شماره 3 - شماره پیاپی 31، پاییز 2023، صفحه 1-17    اصل مقاله (1.78 M)
نوع مقاله: Regular Paper
شناسه دیجیتال (DOI): 10.22075/jrce.2022.26315.1614
نویسندگان
Hamed Heidari Forozabadi1؛ Mohammad Mahdi Khabiri* 1؛ Kazem Barkhordari Bafghi1؛ Dabessa Ayantu Miti Ku2
1Department of Civil Engineering, Yazd University, Yazd, Iran
2Department of Highway and Railway Engineering, Budapest University of Technology and Economics, Budapest, Hungary
چکیده
Today, with the expansion of transportation, several road construction projects have been implemented in several parts of the world. The aim of this study is to stabilize and test sand using cement and drainage wastewater from the ceramic industry. Use of drained wastewater is to reduce the environmental pollution caused by drainage wastewater and reduced consumption of natural resources. In the first stage, the potential of off-site production by the factories and the advantages of using it were investigated. The optimal mixing plan was then obtained by performing a UCS test on samples that were made with different amounts of cement and wastewater. Other specifications of the desired mixture were: single gravity resistance, elasticity modulus, UCS, loss of resistance in saturation and microscopic structure of the particles. In the final stage, the efficiency of the mixture was studied using numerical modeling by finite element method. According to the results obtained from the experiments, it was found that adding 7.5% cement and 12.5% of dried wastewater, the UCS of sand increase from 0.005 MPa to 0.3 MPa and the sand elasticity modulus increase from MPa 5 to 65MPa. The specimen resistance did not increase significantly since the tenth day, and its saturation caused the resistance of the specimens to be reduced by 50%. The results of EDX and XRF tests revealed that the desired water included heavy metals. in addition use of wastewater reducing the consumption of natural resources, reduces the entry of heavy metals into the environment and urban environments. The level of surface treatment was obtained using sand-shaped modeling; which was considered as a substrate stabilizing element, and other pavement layers. The sum of the summands obtained from the modeling with the maximum allowed values was compared which provided satisfactory results. Finally, the processed sand could be used by deep mixing method to stabilize the subgrade of roads.

تازه های تحقیق
  • Adding 7.5% cement and 12.5% of dried waste water, the UCS of sand increase from 0.005 MPa to 0.3 MPa and the sand elasticity modulus increase from MPa 5 to 65MPa.
  • Use of waste water reducing the consumption of natural resources, reduces the entry of heavy metals into the environment and urban environments.
  • The maximum strength obtained on day 30 was 5.04 kg/cm2. The uniaxial strength for the saturated sample was 2.5 kg/cm2 indicating a 50% reduction in strength for the saturated condition. The elasticity module for sand in saturated condition was 66MPa.
  • The adhesion strength between cured sand and sandy soil, as well as between the cured sand and cement-stabilized subgrade were 35MPa and 45MPa, respectively.
کلیدواژه‌ها
Deep soil mixing؛ Sandy subgrade؛ Pavement؛ Ceramic-industry wastewater
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