Experimental evaluation of slag application of Ahvaz steel plant in fixing bed of east sixth bridge in Ahvaz

Document Type : Original Article

Authors

1 Associate Professor, Department of Civil Engineering, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran

2 Department of Civil Engineering, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran

Abstract

Wastes and by-products of industrial plants can be useful in road construction. One of these wastes is the slag of Ahvaz steel plant, which produces about one million tons per year. The lack of riverbeds and aggregates in country, especially in Ahvaz, is hampering construction projects and increasing construction costs in these areas. All construction projects in Ahvaz are made of non-renewable river or mountain materials. Slag is one of these materials that can be a useful replacement for river or mountain materials. The high utilization of lime-based materials for bed consolidation in road infrastructure has led this study to investigate the use of slag as a substitute for Kopal-Lime mixture in road construction. In this study, a thorough review of the use of slag as a substitute for natural materials from viewpoint of quality, time, cost and environmental protection is undertaken. It was found that the bearing strength in the saturated mixture containing 70% slag and 30% soil was increased by 62% compared to of kopal-lime mixture application with a concentration of 150 kg/m3, and 30% in the dry mix condition. The Rial estimate for project implementation as per Cost List 1398 with a mixture containing 70% slag and 30% soil was reduced by 65% compared to the Kopal-Lime mixture. The optimal mix design time is 80% less than the kopal-lime mixture. Overall, the results are remarkable from a qualitative and economic viewpoint, so the use of slag as a substitute for river materials is strongly recommended.

Keywords

Main Subjects

References

[1] Bakhshi Tousi, Payam, 2004, Application of steel slag in aggregate-bituminous asphalt mixtures, Graduate thesis in Road and Transportation Engineering, Sharif University of Technology, Faculty of Engineering.
[2] Rezaei, Behnam, 2013, Using GGBS Slag Furnace Slag as a Substitute for Basis and Substrate Materials in Road Construction, Case Study: Shadegan Port Road, Abadan-Sarbandar Road, Ahvaz Islamic Azad University, Faculty of Engineering.  
[3] Mahdavi Adeli, Mehdi; Abasi, Amir, Technical and Economic Study of the Impact of the Use of Electric Arc Furnace Slag of Ahvaz Steel Plant as a Replacement Aggregate in Structural Concrete, International Conference on Civil, Architecture and Urban Infrastructure, Tabriz, Permanent Secretariat of the Conference.
[4] Motz, H., Geiseler, J., 2001, Products of steel slags and opportunity to save natural resources, Waste Management, Vol. 21, No. 3, pp. 285-293.
[5] Hami, Ahmad, 2009, Building Materials, Publisher, Tehran University Press.
[6] Ahvaz Steel Factory, www.ksc.ir, 2020.
[7] Country Management and Planning Organization, Office of Technical Affairs and Criteria Development, Ministry of Roads and Transportation, Research and Training Center, Iran Road Asphalt Pavement Regulations, Issue 101, Vol. 5, Tehran, 1398.
[8] Geotechnical and Soil Mechanics Laboratory, Bahnian Company of Southern Ahvaz, 2019, Experimental evaluation of slag stabilization using Ahvaz steel plant.
Journal of Structural and Construction Engineering
Volume 8, Issue 9 - Serial Number 48
December 2021
Pages 277-288

Files

History

  • Receive Date: 24 February 2020
  • Revise Date: 11 October 2020
  • Accept Date: 23 October 2020

Share

How to cite

Statistics