Abstract
Use of fly ash (FA) in concrete subjected to freeze-thaw (F-T) cycles in a cold region has been limited because of its slow hydration and low scaling resistance. One of the solutions to increase the utilization of FA in this area may adopt ternary blended concrete to overcome the shortcoming of FA. In this paper, the F-T resistance of plain concrete, binary concrete, and ternary blended concrete mixtures made of ordinary portland cement (OPC), 5%-fixed silica fume (SF), and various Class F FA contents up to 45% as replacement of cement by weight were evaluated. Durability factor (DF), both frost resistance number (FRN) and modified FRN, and critical air void spacing factor (CAVSF) were determined to characterize the F-T resistance of all concrete mixtures. Except for non-air-entrained concrete containing OPC/5SF/15FA, air-entrained binary concretes containing OPC/0SF/35FA and OPC/0SF/45FA, and air-entrained ternary blended concrete containing OPC/5SF/45FA, all concretes had a good F-T resistance which exceeded DF of 60%. The critical air-void spacing factor for binary and ternary blended concretes for 60% DF was determined to be 198.2 μm and 305.2 μm, respectively. Moreover, ternary blended concretes resulted in higher FRN than plain and binary concrete mixtures. Finally, air voids under 300 μm size play a critical role in reducing the F-T damage of ternary concrete mixtures. Based on these results, it can be concluded that construction of the proper air-void system is required to ensure the F-T resistance of ternary blended concrete. Moreover, the modified FRN can be successfully used to evaluate the F-T resistance of ternary blended concrete.
| Original language | English |
|---|---|
| Pages (from-to) | 127-136 |
| Number of pages | 10 |
| Journal | Cold Regions Science and Technology |
| Volume | 155 |
| DOIs | |
| Publication status | Published - Nov 1 2018 |
Fingerprint
Keywords
- Critical air-void spacing factor
- Durability factor
- Fly ash
- Modified frost resistance number
- Silica fume
- Ternary blended concrete
ASJC Scopus subject areas
- Geotechnical Engineering and Engineering Geology
- Earth and Planetary Sciences(all)
Cite this
Determination of air-void system and modified frost resistance number for freeze-thaw resistance evaluation of ternary blended concrete made of ordinary Portland cement/silica fume/class F fly ash. / Shon, Chang Seon; Abdigaliyev, Arman; Bagitova, Saltanat; Chung, Chul Woo; Kim, Daegeon.
In: Cold Regions Science and Technology, Vol. 155, 01.11.2018, p. 127-136.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Determination of air-void system and modified frost resistance number for freeze-thaw resistance evaluation of ternary blended concrete made of ordinary Portland cement/silica fume/class F fly ash
AU - Shon, Chang Seon
AU - Abdigaliyev, Arman
AU - Bagitova, Saltanat
AU - Chung, Chul Woo
AU - Kim, Daegeon
PY - 2018/11/1
Y1 - 2018/11/1
N2 - Use of fly ash (FA) in concrete subjected to freeze-thaw (F-T) cycles in a cold region has been limited because of its slow hydration and low scaling resistance. One of the solutions to increase the utilization of FA in this area may adopt ternary blended concrete to overcome the shortcoming of FA. In this paper, the F-T resistance of plain concrete, binary concrete, and ternary blended concrete mixtures made of ordinary portland cement (OPC), 5%-fixed silica fume (SF), and various Class F FA contents up to 45% as replacement of cement by weight were evaluated. Durability factor (DF), both frost resistance number (FRN) and modified FRN, and critical air void spacing factor (CAVSF) were determined to characterize the F-T resistance of all concrete mixtures. Except for non-air-entrained concrete containing OPC/5SF/15FA, air-entrained binary concretes containing OPC/0SF/35FA and OPC/0SF/45FA, and air-entrained ternary blended concrete containing OPC/5SF/45FA, all concretes had a good F-T resistance which exceeded DF of 60%. The critical air-void spacing factor for binary and ternary blended concretes for 60% DF was determined to be 198.2 μm and 305.2 μm, respectively. Moreover, ternary blended concretes resulted in higher FRN than plain and binary concrete mixtures. Finally, air voids under 300 μm size play a critical role in reducing the F-T damage of ternary concrete mixtures. Based on these results, it can be concluded that construction of the proper air-void system is required to ensure the F-T resistance of ternary blended concrete. Moreover, the modified FRN can be successfully used to evaluate the F-T resistance of ternary blended concrete.
AB - Use of fly ash (FA) in concrete subjected to freeze-thaw (F-T) cycles in a cold region has been limited because of its slow hydration and low scaling resistance. One of the solutions to increase the utilization of FA in this area may adopt ternary blended concrete to overcome the shortcoming of FA. In this paper, the F-T resistance of plain concrete, binary concrete, and ternary blended concrete mixtures made of ordinary portland cement (OPC), 5%-fixed silica fume (SF), and various Class F FA contents up to 45% as replacement of cement by weight were evaluated. Durability factor (DF), both frost resistance number (FRN) and modified FRN, and critical air void spacing factor (CAVSF) were determined to characterize the F-T resistance of all concrete mixtures. Except for non-air-entrained concrete containing OPC/5SF/15FA, air-entrained binary concretes containing OPC/0SF/35FA and OPC/0SF/45FA, and air-entrained ternary blended concrete containing OPC/5SF/45FA, all concretes had a good F-T resistance which exceeded DF of 60%. The critical air-void spacing factor for binary and ternary blended concretes for 60% DF was determined to be 198.2 μm and 305.2 μm, respectively. Moreover, ternary blended concretes resulted in higher FRN than plain and binary concrete mixtures. Finally, air voids under 300 μm size play a critical role in reducing the F-T damage of ternary concrete mixtures. Based on these results, it can be concluded that construction of the proper air-void system is required to ensure the F-T resistance of ternary blended concrete. Moreover, the modified FRN can be successfully used to evaluate the F-T resistance of ternary blended concrete.
KW - Critical air-void spacing factor
KW - Durability factor
KW - Fly ash
KW - Modified frost resistance number
KW - Silica fume
KW - Ternary blended concrete
UR - http://www.scopus.com/inward/record.url?scp=85051367168&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85051367168&partnerID=8YFLogxK
U2 - 10.1016/j.coldregions.2018.08.003
DO - 10.1016/j.coldregions.2018.08.003
M3 - Article
VL - 155
SP - 127
EP - 136
JO - Cold Regions Science and Technology
JF - Cold Regions Science and Technology
SN - 0165-232X
ER -