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Artificial fly ash based aggregates properties influence on lightweight concrete performances

Authorized Users Only
2015
Authors
Terzić, Anja
Pezo, Lato
Mitić, Vojislav
Radojević, Zagorka
Article (Published version)
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Abstract
The effect of the application of pelletized fly ash based aggregates obtained through different processing techniques on the behavior of lightweight concretes was analyzed. Experimental program implied production of four lightweight artificial aggregates-cold bonded and sintered pellets based on either mechanically activated or non-activated low-calcium fly ash and water glass. The lightweight concrete behavior was compared to that of normal-weight concrete through compressive strength, flexural strength, porosity, shrinkage, and modulus of elasticity investigation. Differences in concretes characteristics were discussed with SEM imagining support. The statistical analysis of lightweight aggregate and ash properties contribution on concrete performances was realized by analysis variance model (ANOVA). Optimal production combination that maximizes lightweight concrete performance was determined by employing response surface methodology. An increase in concrete strength induced by the in...crease in ash fineness was noticed. Mechanical activation also had effect on the pellets sintering period and sintering temperature reduction. The 28- and 56-day lightweight concrete specimens exhibited properties that met the requirements for normal-weight concretes. Finally, the ideal combinations of ash pellets production parameters and properties that gave the lightweight concrete with behavior matching to that of standard concrete were established. The production capability of lightweight concrete with advanced performances based on artificial aggregate approves the principle of waste material reusing and enables cleaner and economically sustainable concrete manufacturing procedure.

Keywords:
Structural applications / Sintering / Response surface analysis / Mechanical properties / Composites
Source:
Ceramics International, 2015, 41, 2, 2714-2726
Publisher:
  • Elsevier Sci Ltd, Oxford
Funding / projects:
  • Serbian Ministry of Education, Science and Technological Development
  • Directed synthesis, structure and properties of multifunctional materials (RS-172057)
  • Development and application of multifunctional materials using domestic raw materials in upgraded processing lines (RS-45008)
  • Osmotic dehydration of food - energy and ecological aspects of sustainable production (RS-31055)

DOI: 10.1016/j.ceramint.2014.10.086

ISSN: 0272-8842

WoS: 000348003100010

Scopus: 2-s2.0-84919458824
[ Google Scholar ]
55
31
URI
http://rims.institutims.rs/handle/123456789/267
Collections
  • Radovi istraživača / Researchers' publications
Institution/Community
Institut za ispitivanje materijala
TY  - JOUR
AU  - Terzić, Anja
AU  - Pezo, Lato
AU  - Mitić, Vojislav
AU  - Radojević, Zagorka
PY  - 2015
UR  - http://rims.institutims.rs/handle/123456789/267
AB  - The effect of the application of pelletized fly ash based aggregates obtained through different processing techniques on the behavior of lightweight concretes was analyzed. Experimental program implied production of four lightweight artificial aggregates-cold bonded and sintered pellets based on either mechanically activated or non-activated low-calcium fly ash and water glass. The lightweight concrete behavior was compared to that of normal-weight concrete through compressive strength, flexural strength, porosity, shrinkage, and modulus of elasticity investigation. Differences in concretes characteristics were discussed with SEM imagining support. The statistical analysis of lightweight aggregate and ash properties contribution on concrete performances was realized by analysis variance model (ANOVA). Optimal production combination that maximizes lightweight concrete performance was determined by employing response surface methodology. An increase in concrete strength induced by the increase in ash fineness was noticed. Mechanical activation also had effect on the pellets sintering period and sintering temperature reduction. The 28- and 56-day lightweight concrete specimens exhibited properties that met the requirements for normal-weight concretes. Finally, the ideal combinations of ash pellets production parameters and properties that gave the lightweight concrete with behavior matching to that of standard concrete were established. The production capability of lightweight concrete with advanced performances based on artificial aggregate approves the principle of waste material reusing and enables cleaner and economically sustainable concrete manufacturing procedure.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Artificial fly ash based aggregates properties influence on lightweight concrete performances
EP  - 2726
IS  - 2
SP  - 2714
VL  - 41
DO  - 10.1016/j.ceramint.2014.10.086
ER  - 
@article{
author = "Terzić, Anja and Pezo, Lato and Mitić, Vojislav and Radojević, Zagorka",
year = "2015",
abstract = "The effect of the application of pelletized fly ash based aggregates obtained through different processing techniques on the behavior of lightweight concretes was analyzed. Experimental program implied production of four lightweight artificial aggregates-cold bonded and sintered pellets based on either mechanically activated or non-activated low-calcium fly ash and water glass. The lightweight concrete behavior was compared to that of normal-weight concrete through compressive strength, flexural strength, porosity, shrinkage, and modulus of elasticity investigation. Differences in concretes characteristics were discussed with SEM imagining support. The statistical analysis of lightweight aggregate and ash properties contribution on concrete performances was realized by analysis variance model (ANOVA). Optimal production combination that maximizes lightweight concrete performance was determined by employing response surface methodology. An increase in concrete strength induced by the increase in ash fineness was noticed. Mechanical activation also had effect on the pellets sintering period and sintering temperature reduction. The 28- and 56-day lightweight concrete specimens exhibited properties that met the requirements for normal-weight concretes. Finally, the ideal combinations of ash pellets production parameters and properties that gave the lightweight concrete with behavior matching to that of standard concrete were established. The production capability of lightweight concrete with advanced performances based on artificial aggregate approves the principle of waste material reusing and enables cleaner and economically sustainable concrete manufacturing procedure.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Artificial fly ash based aggregates properties influence on lightweight concrete performances",
pages = "2726-2714",
number = "2",
volume = "41",
doi = "10.1016/j.ceramint.2014.10.086"
}
Terzić, A., Pezo, L., Mitić, V.,& Radojević, Z.. (2015). Artificial fly ash based aggregates properties influence on lightweight concrete performances. in Ceramics International
Elsevier Sci Ltd, Oxford., 41(2), 2714-2726.
https://doi.org/10.1016/j.ceramint.2014.10.086
Terzić A, Pezo L, Mitić V, Radojević Z. Artificial fly ash based aggregates properties influence on lightweight concrete performances. in Ceramics International. 2015;41(2):2714-2726.
doi:10.1016/j.ceramint.2014.10.086 .
Terzić, Anja, Pezo, Lato, Mitić, Vojislav, Radojević, Zagorka, "Artificial fly ash based aggregates properties influence on lightweight concrete performances" in Ceramics International, 41, no. 2 (2015):2714-2726,
https://doi.org/10.1016/j.ceramint.2014.10.086 . .

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