Effects of the concentrated NH4NO3 solution on mechanical properties and structure of the fly ash based geopolymers
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Bascarević, ZvezdanaKomljenović, Miroslav
Miladinović, Zoran
Nikolić, Violeta
Marjanović, Nataša
Zujović, Zoran
Petrović, Rada
Article (Published version)
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The geopolymers based on fly ash were exposed to the concentrated (6 M) NH4NO3 solution for 540 days. The highest compressive strength decrease occurred in the initial 28 days testing period. Study of the effects of the NH4NO3 solution on the geopolymer structure indicated leaching of alkali and alkaline earth cations and breaking of -Si-O-Al- bonds in aluminosilicate gel. The reduction of compressive strength of the geopolymers was associated with the structural defects in the aluminosilicate gel created by breaking of -Si-O-Al- bonds. Subsequent fluctuation in compressive strength was a result of the structural defects reparation by silicon.
Keywords:
NH4NO3 / Leaching / Geopolymer / Durability / DealuminationSource:
Construction and Building Materials, 2013, 41, 570-579Publisher:
- Elsevier Sci Ltd, Oxford
Funding / projects:
- Geopolymers - technology for converting the industrial waste into functional materials (RS-MESTD-Technological Development (TD or TR)-34026)
DOI: 10.1016/j.conbuildmat.2012.12.067
ISSN: 0950-0618
WoS: 000317528900064
Scopus: 2-s2.0-84873881682
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Institut za opštu i fizičku hemijuTY - JOUR AU - Bascarević, Zvezdana AU - Komljenović, Miroslav AU - Miladinović, Zoran AU - Nikolić, Violeta AU - Marjanović, Nataša AU - Zujović, Zoran AU - Petrović, Rada PY - 2013 UR - https://riofh.iofh.bg.ac.rs/handle/123456789/284 AB - The geopolymers based on fly ash were exposed to the concentrated (6 M) NH4NO3 solution for 540 days. The highest compressive strength decrease occurred in the initial 28 days testing period. Study of the effects of the NH4NO3 solution on the geopolymer structure indicated leaching of alkali and alkaline earth cations and breaking of -Si-O-Al- bonds in aluminosilicate gel. The reduction of compressive strength of the geopolymers was associated with the structural defects in the aluminosilicate gel created by breaking of -Si-O-Al- bonds. Subsequent fluctuation in compressive strength was a result of the structural defects reparation by silicon. PB - Elsevier Sci Ltd, Oxford T2 - Construction and Building Materials T1 - Effects of the concentrated NH4NO3 solution on mechanical properties and structure of the fly ash based geopolymers EP - 579 SP - 570 VL - 41 DO - 10.1016/j.conbuildmat.2012.12.067 UR - conv_444 ER -
@article{ author = "Bascarević, Zvezdana and Komljenović, Miroslav and Miladinović, Zoran and Nikolić, Violeta and Marjanović, Nataša and Zujović, Zoran and Petrović, Rada", year = "2013", abstract = "The geopolymers based on fly ash were exposed to the concentrated (6 M) NH4NO3 solution for 540 days. The highest compressive strength decrease occurred in the initial 28 days testing period. Study of the effects of the NH4NO3 solution on the geopolymer structure indicated leaching of alkali and alkaline earth cations and breaking of -Si-O-Al- bonds in aluminosilicate gel. The reduction of compressive strength of the geopolymers was associated with the structural defects in the aluminosilicate gel created by breaking of -Si-O-Al- bonds. Subsequent fluctuation in compressive strength was a result of the structural defects reparation by silicon.", publisher = "Elsevier Sci Ltd, Oxford", journal = "Construction and Building Materials", title = "Effects of the concentrated NH4NO3 solution on mechanical properties and structure of the fly ash based geopolymers", pages = "579-570", volume = "41", doi = "10.1016/j.conbuildmat.2012.12.067", url = "conv_444" }
Bascarević, Z., Komljenović, M., Miladinović, Z., Nikolić, V., Marjanović, N., Zujović, Z.,& Petrović, R.. (2013). Effects of the concentrated NH4NO3 solution on mechanical properties and structure of the fly ash based geopolymers. in Construction and Building Materials Elsevier Sci Ltd, Oxford., 41, 570-579. https://doi.org/10.1016/j.conbuildmat.2012.12.067 conv_444
Bascarević Z, Komljenović M, Miladinović Z, Nikolić V, Marjanović N, Zujović Z, Petrović R. Effects of the concentrated NH4NO3 solution on mechanical properties and structure of the fly ash based geopolymers. in Construction and Building Materials. 2013;41:570-579. doi:10.1016/j.conbuildmat.2012.12.067 conv_444 .
Bascarević, Zvezdana, Komljenović, Miroslav, Miladinović, Zoran, Nikolić, Violeta, Marjanović, Nataša, Zujović, Zoran, Petrović, Rada, "Effects of the concentrated NH4NO3 solution on mechanical properties and structure of the fly ash based geopolymers" in Construction and Building Materials, 41 (2013):570-579, https://doi.org/10.1016/j.conbuildmat.2012.12.067 ., conv_444 .