Compressive strength of sulfur polymer concretes in comparison with Portland cement concretes


Öztürk O. , Öner A.

ACE 2020-21 14th INTERNATIONAL CONGRESS ON ADVANCES IN CIVIL ENGINEERING, İstanbul, Turkey, 6 - 08 September 2021, pp.35-42

  • Publication Type: Conference Paper / Full Text
  • City: İstanbul
  • Country: Turkey
  • Page Numbers: pp.35-42

Abstract

Most of the world's energy demands are met from fossil fuels, so the amount of sulfur released as a result of petroleum processing increases. In recent years, there has been a significant increase in studies investigating the usability of sulfur as a building material due to increased sulfur reserves and applications where sulfur is used as a binder in concrete have been realized. In this study, it was aimed to determine the compressive strength of sulfur polymer concrete (SPC) and to compare the results with traditional Portland cement concrete (PCC) with similar compressive strength. Firstly, the sulfur modification was performed using 2.5% bitumen by weight for the preparation of SPC in the study. Differential scanning calorimetry (DSC) and scanning electron microscope (SEM) analyzes were performed on the prepared modified sulfur (MS) samples. 28 days compressive strengths of SPC concretes prepared using MS were determined and PCC mixing ratios with similar compressive strengths were obtained using the same aggregates. The casting of SPC and PCC mixtures were performed and compressive strength tests were carried out at the end of 7, 28 and 360 days. Also, due to the early setting feature of SPCs, compressive strength tests at the end of 1 and 24 hours was determined, unlike PCCs. As a result of the experiments, it was determined that 28% of the SPC's 28-day compressive strengths reached at the end of 1 hour, while PCCs reached 82% of their 28-day compressive strength at the end of the 7 days. While long-term compressive strength values of PCCs increased, there was a decrease in the compressive strengths of SPCs.