Investigation Of Some Physical And Mechanical Properties Of High Performance Structural Lightweight Concrete With Pumice Aggregate

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Saka R. C., Yazıcı H.

REVISTA ROMANA DE MATERIALE/ ROMANIAN JOURNAL OF MATERIALS, vol.54, no.1, pp.77-87, 2024 (SCI-Expanded)

  • Publication Type: Article / Article
  • Volume: 54 Issue: 1
  • Publication Date: 2024
  • 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.77-87
  • Dokuz Eylül University Affiliated: Yes

Abstract

In this study, LC30 structural lightweight concrete and LC60 high performance structural lightweight concrete were produced by using completely pumice aggregate. A total of 6 mixture designs were created by substituting 40% fly ash (FA) by weight into cement and adding 5.5 kg/m3 polypropylene fiber (PPF) to two different lightweight concrete designs. Flexural strength, compressive strength, total water absorption, electrical resistivity, rapid chloride ion penetrability tests were carried out on the produced concretes, and SEM-EDS analyzes were performed. As a result, lightweight structural concretes with a unit weight below 2000 kg/m3 could be produced by using 100% pumice aggregate, and LC60 high-performance lightweight concrete exhibited superior performance in all mechanical and physical tests compared to LC30 lightweight concrete. Since pumice has a porous structure, it has been confirmed by SEM images that there is a good interface between the aggregate and the matrix.