PUMICE AGGREGATE BASED LIGHTWEIGHT CONCRETES UNDER SULFURIC ACID ENVIRONMENT

Niş A., Al-Antaki T. S. W.

Revista Romana de Materiale/ Romanian Journal of Materials, vol.52, no.2, pp.194-202, 2022 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 52 Issue: 2
  • Publication Date: 2022
  • Journal Name: Revista Romana de Materiale/ Romanian Journal of Materials
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, ABI/INFORM, Aerospace Database, Chemical Abstracts Core, Communication Abstracts, Metadex, Civil Engineering Abstracts
  • Page Numbers: pp.194-202
  • Keywords: cement efficiency factor, durability, lightweight concrete, sulfuric acid resistance, volcanic pumice aggregate
  • Istanbul Gelisim University Affiliated: Yes

Abstract

© 2022, Fundatia Serban Solacolu. All rights reserved.In this study, volcanic pumice aggregate incorporated different lightweight concretes (LWC) were investigated under a 5% sulfuric acid environment. For this purpose; OPC, OPC-FA, OPC-S, OPC-FA+S with 0%, 50%, and 100% pumice incorporations were manufactured considering cement efficiency factors for fly ash (FA) and slag (S) given in the TS13515 and EN 206-1 to evaluate the applicability of cement efficiency factors in the water and sulfuric acid environments. The visual appearance, weight change, and compressive strength tests were executed, and strength gain index and strength loss index parameters were utilized for the evaluation. The results indicated that the cement efficiency factors for the fly ash and slag were found appropriate for the pumice aggregate replacements up to 100% for the LWC incorporating only fly ash or slag. However, when the fly ash and slag were used together, the cement efficiency factors should be reduced from 0.4 to 0.35 for FA and from 0.8 to 0.75 for slag materials.