Creep Response of Rubberised One-Part Alkali-Activated Concrete

Mohamed Elzeadani, Dan V. Bompa, Ahmed Y. Elghazouli

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)

Abstract

This paper presents the creep deformations and long-term constitutive behavior of rubberised one-part alkali-activated concrete. Blast furnace slag and fly ash are used as the main and secondary aluminosilicate precursor, respectively, while anhydrous sodium metasilicate is employed as a solid activator. Crumb rubber particles are used to replace up to 60% by volume of the total natural aggregates. Specimens are allowed to cure at ambient conditions for 28 days, and the creep specimens are then subjected to two compressive stress levels of 10 and 20% of the 28-day strength, which are sustained for a period of one-year. Results show a deterioration in the compressive strength and elastic modulus with higher rubber content. The long-term strength properties of the creep specimens and their unloaded counterparts are lower than similar specimens tested at 28 days. The axial and lateral crushing strains of the specimens tested at the end of the creep test are higher than similar specimens tested at 28 days. The creep strains increase as the creep load increases but reduce with higher rubber content. The specific creep and creep coefficients show a reduction as the creep load increases from 10 to 20% of the 28-day compressive strength but increase as the rubber content increases. The creep coefficients of the non-rubberised specimens are significantly higher than those given by design equations in the CEB-FIP Model Code 2010, while the opposite is seen for specimens with high rubber content.

Original languageEnglish
Title of host publicationBuilding for the Future
Subtitle of host publicationDurable, Sustainable, Resilient - Proceedings of the Symposium 2023 - Volume 1
EditorsAlper Ilki, Derya Çavunt, Yavuz Selim Çavunt
PublisherSpringer Science and Business Media Deutschland GmbH
Pages298-308
Number of pages11
ISBN (Print)9783031325182
DOIs
Publication statusPublished - 2023
Externally publishedYes
EventInternational Symposium of the International Federation for Structural Concrete, fib Symposium 2023 - Istanbul, Turkey
Duration: 5 Jun 20237 Jun 2023

Publication series

NameLecture Notes in Civil Engineering
Volume349 LNCE
ISSN (Print)2366-2557
ISSN (Electronic)2366-2565

Conference

ConferenceInternational Symposium of the International Federation for Structural Concrete, fib Symposium 2023
Country/TerritoryTurkey
CityIstanbul
Period5/06/237/06/23

Keywords

  • Creep response
  • Long-term behavior
  • Mechanical properties
  • One-part alkali-activated concrete
  • Rubberised concrete

ASJC Scopus subject areas

  • Civil and Structural Engineering

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