TY - JOUR
T1 - Alkali-silica reaction and strength of concrete with pretreated glass particles as fine aggregates
AU - Sun, Lianfang
AU - Zhu, Xingji
AU - Kim, Minjae
AU - Zi, Goangseup
N1 - Funding Information:
The research is financially supported by a Korea University Grant and the National Research Foundation of Korea (NRF) funded by the Ministry of Education ( NRF-2020R1I1A1A01071824 ). Lianfang Sun appreciates the support of the China Scholarship Council (CSC).
Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2021/2/15
Y1 - 2021/2/15
N2 - 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.
AB - 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.
KW - Alkali-silica reaction
KW - Expansion
KW - Glass aggregate
KW - Pretreatment
UR - http://www.scopus.com/inward/record.url?scp=85097870282&partnerID=8YFLogxK
U2 - 10.1016/j.conbuildmat.2020.121809
DO - 10.1016/j.conbuildmat.2020.121809
M3 - Article
AN - SCOPUS:85097870282
SN - 0950-0618
VL - 271
JO - Construction and Building Materials
JF - Construction and Building Materials
M1 - 121809
ER -