Sustainability Evaluation of Conductive Concrete for Pavement Deicing: The Case Study of Parkway Bridge, Tehran, Iran
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RESEARCH ARTICLE-CIVIL ENGINEERING
Sustainability Evaluation of Conductive Concrete for Pavement Deicing: The Case Study of Parkway Bridge, Tehran, Iran Aydin Shishegaran1 · Mohammad Ali Naghsh2 · Hamed Taghavizade3 · Mohammad Hossein Afsharmovahed1 · Arshia Shishegaran4 · Mohammadreza Babaei Lavasani5 Received: 22 June 2020 / Accepted: 20 October 2020 © King Fahd University of Petroleum & Minerals 2020
Abstract The main target of this study is to evaluate the sustainability of existing mix proportions of the concrete to find the best option for pavement deicing in bridge in Tehran. Based on data availability, the meteorological condition in Tehran, and interviews with experts, 12 conductive concrete mixes, which were evaluated in previous studies, were proposed in this study. Sustainable indicators were selected based on data availability, proposed life cycle assessment indicators by CEN TC350, and experts’ opinions. Weights and effect values of the indicators were determined based on interviews with experts. Values of two indicators, including compressive strength and resistivity, were extracted from the previous studies. Existing numerical models were used to determine the values of other indicators. A composite sustainability index and an applied effect of changes intensity in each indicator (AECIEI) methods were used to sort the mix proportions. Results show that the AECIEI method is more accurate for megacities, where several critical environmental and social problems exist because it can apply the effect of critical indicators and the intensity of the changes on sustainability. Mix proportion 1, in which steel wastes were used as the conductive material, is selected as the best option with compressive strength of 37.77 MPa, resistivity of 5.69 m. This mix proportion can increase the temperature by 18.8 °C and can increase the temperature from − 10 to 3 °C during 103.723 min. Keywords Sustainable development analysis · Sustainable indicators · An applied effect of changes intensity in each indicator (AECIEI) · A composite sustainability index (CSI) · Multi-criteria decision analysis (MCDA) · Power cost
1 Introduction Route surface icing is one of the important reasons for accidents and perhaps the main cause of the reduction in traffic flow and safety. Several practical methods such as automated salt spray system, electric heating cable, sprinkle deicer salts, infrared heat lap, spreading fine aggregates on route surfaces,
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Aydin Shishegaran [email protected]
1
School of Civil Engineering, Iran University of Science and Technology, Tehran, Iran
2
Isfahan University of Technology, Isfahan, Iran
3
International Institute of Earthquake Engineering and Seismology, Tehran, Iran
4
School of Civil Engineering, Islamic Azad University, Tehran, Iran
5
School of Civil Engineering, Molana Institute of Higher Education, Abyek, Iran
piping hot water, snow plowing, heated gas, and conductive concrete are utilized for deicing roadways [1, 2]. In recent years, fine aggregates and deicin
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