Mechanical and time-dependent properties of high-volume fly ash concrete for structural use
Апстракт
A two-phase experimental study on the effect of simultaneous partial replacement of cement and fine aggregate with fly ash on the mechanical and time-dependent properties of high-volume fly ash concrete (HVFAC) is presented. The results of the first phase of the study show that it is possible to make structural grade HVFAC with 50% of cement and an additional 30% of fine aggregate replacement that has a similar compressive strength to that of the control cement concrete and with adequate workability. In the second phase of the study the mechanical and time-dependent properties of HVFAC with a mass of fly ash of 50-70% of the total mass of cementitious materials were tested. The results show that with the increase in fly ash content the compressive strength of HVFAC increased by 22% on average at all ages tested. With the exception of the early-age compressive strength, it was found that the European standard EN 1992-1-1:2004 provisions for ordinary cement concrete underestimate the mec...hanical properties and significantly overestimate the shrinkage and creep of HVFAC. Better correlation with experimental results was obtained using different coefficients developed for HVFAC.
Кључне речи:
creep / fly ash / mechanical properties / shrinkage / structural concreteИзвор:
Magazine of Concrete Research, 2016, 68, 12, 632-645Издавач:
- ICE Publishing
Финансирање / пројекти:
- Истраживање могућности примене отпадних и рециклираних материјала у бетонским композитима, са оценом утицаја на животну средину, у циљу промоције одрживог грађевинарства у србији (RS-36017)
- Swiss National Science Foundation, SCOPES programme 152408
DOI: 10.1680/jmacr.15.00384
ISSN: 0024-9831
WoS: 000376096200004
Scopus: 2-s2.0-84968830330
Институција/група
GraFarTY - JOUR AU - Dragaš, Jelena AU - Ignjatović, Ivan AU - Tošić, Nikola AU - Marinković, Snežana PY - 2016 UR - https://grafar.grf.bg.ac.rs/handle/123456789/799 AB - A two-phase experimental study on the effect of simultaneous partial replacement of cement and fine aggregate with fly ash on the mechanical and time-dependent properties of high-volume fly ash concrete (HVFAC) is presented. The results of the first phase of the study show that it is possible to make structural grade HVFAC with 50% of cement and an additional 30% of fine aggregate replacement that has a similar compressive strength to that of the control cement concrete and with adequate workability. In the second phase of the study the mechanical and time-dependent properties of HVFAC with a mass of fly ash of 50-70% of the total mass of cementitious materials were tested. The results show that with the increase in fly ash content the compressive strength of HVFAC increased by 22% on average at all ages tested. With the exception of the early-age compressive strength, it was found that the European standard EN 1992-1-1:2004 provisions for ordinary cement concrete underestimate the mechanical properties and significantly overestimate the shrinkage and creep of HVFAC. Better correlation with experimental results was obtained using different coefficients developed for HVFAC. PB - ICE Publishing T2 - Magazine of Concrete Research T1 - Mechanical and time-dependent properties of high-volume fly ash concrete for structural use EP - 645 IS - 12 SP - 632 VL - 68 DO - 10.1680/jmacr.15.00384 ER -
@article{ author = "Dragaš, Jelena and Ignjatović, Ivan and Tošić, Nikola and Marinković, Snežana", year = "2016", abstract = "A two-phase experimental study on the effect of simultaneous partial replacement of cement and fine aggregate with fly ash on the mechanical and time-dependent properties of high-volume fly ash concrete (HVFAC) is presented. The results of the first phase of the study show that it is possible to make structural grade HVFAC with 50% of cement and an additional 30% of fine aggregate replacement that has a similar compressive strength to that of the control cement concrete and with adequate workability. In the second phase of the study the mechanical and time-dependent properties of HVFAC with a mass of fly ash of 50-70% of the total mass of cementitious materials were tested. The results show that with the increase in fly ash content the compressive strength of HVFAC increased by 22% on average at all ages tested. With the exception of the early-age compressive strength, it was found that the European standard EN 1992-1-1:2004 provisions for ordinary cement concrete underestimate the mechanical properties and significantly overestimate the shrinkage and creep of HVFAC. Better correlation with experimental results was obtained using different coefficients developed for HVFAC.", publisher = "ICE Publishing", journal = "Magazine of Concrete Research", title = "Mechanical and time-dependent properties of high-volume fly ash concrete for structural use", pages = "645-632", number = "12", volume = "68", doi = "10.1680/jmacr.15.00384" }
Dragaš, J., Ignjatović, I., Tošić, N.,& Marinković, S.. (2016). Mechanical and time-dependent properties of high-volume fly ash concrete for structural use. in Magazine of Concrete Research ICE Publishing., 68(12), 632-645. https://doi.org/10.1680/jmacr.15.00384
Dragaš J, Ignjatović I, Tošić N, Marinković S. Mechanical and time-dependent properties of high-volume fly ash concrete for structural use. in Magazine of Concrete Research. 2016;68(12):632-645. doi:10.1680/jmacr.15.00384 .
Dragaš, Jelena, Ignjatović, Ivan, Tošić, Nikola, Marinković, Snežana, "Mechanical and time-dependent properties of high-volume fly ash concrete for structural use" in Magazine of Concrete Research, 68, no. 12 (2016):632-645, https://doi.org/10.1680/jmacr.15.00384 . .