A Novel Method of Crushing Glass Aggregates to Reduce the Alkali-Silica Reaction

Lianfang Sun, Minjae Kim, Jeung Hwan Doh, Goangseup Zi

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

This study proposed a novel method of crushing glass aggregates to reduce the alkali-silica reaction (ASR). Glass aggregates were crushed while immersed in different calcium bearing solutions. ASR measurement and compressive strength tests of mortars incorporating the glass aggregate were performed to investigate the feasibility of the crushing method. The results indicate that the crushing method was effective in both ASR mitigation and compressive strength improvement. Calcium nitrite solution was found to be more effective than calcium chloride solution for mitigating ASR damage. The ASR expansion after 14 days, measured in accordance with ASTM C1260, was 0.228% when the glass aggregates were conventionally crushed in air, which is potentially unsafe. This value decreased to 0.082% when the aggregates were crushed in calcium nitrite solution, a value which is considered innocuous. The compressive strength of the mortar was enhanced by approximately 12% compared to that of a mortar with conventionally crushed glass aggregate by incorporating glass aggregates crushed in calcium nitrite solution.

Original languageEnglish
Pages (from-to)4763-4770
Number of pages8
JournalKSCE Journal of Civil Engineering
Volume25
Issue number12
DOIs
Publication statusPublished - 2021 Dec

Bibliographical note

Publisher Copyright:
© 2021, Korean Society of Civil Engineers.

Keywords

  • Aggregates
  • Alkali-silica reaction
  • Crushing
  • Glass aggregate
  • Recycling

ASJC Scopus subject areas

  • Civil and Structural Engineering

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