Alkali-silica reaction and strength of concrete with pretreated glass particles as fine aggregates

Lianfang Sun, Xingji Zhu, Minjae Kim, Goangseup Zi

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

In this study, the strength and alkali-silica reaction (ASR) of concrete by incorporating pretreated soda-lime glass particles as fine aggregates were investigated. The glass aggregates were pretreated with three different solutions: Ca(OH)2, NaOH, and a mixture of Ca(OH)2 and NaOH. The glass aggregates were pretreated for 1, 4, and 7 days to investigate the time-dependent effect. Results show that the ASR was mitigated in all pretreatments. The effect was more noticeable with pretreatment in a mixed solution. The effect increased with an increase in pretreatment time. The ASR expansion was reduced by approximately 50% by pretreating the glass aggregate in the mixed solution at 80 °C for 7 days. Moreover, pretreatment of the glass aggregate was beneficial for strength improvement. For example, by pretreating the glass aggregate in the Ca(OH)2 solution at 80 °C for 7 days, the 28-day compressive strength demonstrated an approximate 6% increment compared with the specimen with non-pretreated glass aggregates.

Original languageEnglish
Article number121809
JournalConstruction and Building Materials
Volume271
DOIs
Publication statusPublished - 2021 Feb 15

Keywords

  • Alkali-silica reaction
  • Expansion
  • Glass aggregate
  • Pretreatment

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

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