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A platform for research: civil engineering, architecture and urbanism
Availability and Reactivity of Agricultural Bio-Based Mineral Additives Originating from Vojvodina, Serbia
https://orcid.org/http://orcid.org/0000-0003-3029-9309
https://orcid.org/http://orcid.org/0000-0002-3482-9437
https://orcid.org/http://orcid.org/0000-0002-9340-5220
https://orcid.org/http://orcid.org/0000-0002-3081-1766
https://orcid.org/http://orcid.org/0000-0003-1565-822X
The present study focuses on evaluating seven different agricultural biomass ashes, generated by combustion of wheat straw, soya straw, cob corn, silo waste and oil rapeseed, as sustainable alternatives to carbon-intensive conventional cement. A detailed characterization was carried out from a chemical, mechanical and physical standpoint, aimed at exploring their potential as supplementary cementitious materials (SCM). The results indicated that all the ashes, where wheat straw and cob corn are the prevailing biomass sources, exhibited greater pozzolanic behavior and higher activity index, depending on the amorphous silica content and level of fineness. Furthermore, the influence of two optimal types of biomass ashes, selected based on the characterization results, on the tested mechanical and durability properties of cement-based mortars is also presented. The results indicate that mortars blended with a high volume of biomass ashes had comparable mechanical properties with reference values, owing to their pozzolanic activity, increased number of nucleation sites for cement hydration and the filler (packing) effect. However, due to the dilution effect, higher water absorption was registered for all blended mortars, pointing to the need for mix design optimization by lowering the effective water-to-binder ratio.
Availability and Reactivity of Agricultural Bio-Based Mineral Additives Originating from Vojvodina, Serbia
https://orcid.org/http://orcid.org/0000-0003-3029-9309
https://orcid.org/http://orcid.org/0000-0002-3482-9437
https://orcid.org/http://orcid.org/0000-0002-9340-5220
https://orcid.org/http://orcid.org/0000-0002-3081-1766
https://orcid.org/http://orcid.org/0000-0003-1565-822X
The present study focuses on evaluating seven different agricultural biomass ashes, generated by combustion of wheat straw, soya straw, cob corn, silo waste and oil rapeseed, as sustainable alternatives to carbon-intensive conventional cement. A detailed characterization was carried out from a chemical, mechanical and physical standpoint, aimed at exploring their potential as supplementary cementitious materials (SCM). The results indicated that all the ashes, where wheat straw and cob corn are the prevailing biomass sources, exhibited greater pozzolanic behavior and higher activity index, depending on the amorphous silica content and level of fineness. Furthermore, the influence of two optimal types of biomass ashes, selected based on the characterization results, on the tested mechanical and durability properties of cement-based mortars is also presented. The results indicate that mortars blended with a high volume of biomass ashes had comparable mechanical properties with reference values, owing to their pozzolanic activity, increased number of nucleation sites for cement hydration and the filler (packing) effect. However, due to the dilution effect, higher water absorption was registered for all blended mortars, pointing to the need for mix design optimization by lowering the effective water-to-binder ratio.
Availability and Reactivity of Agricultural Bio-Based Mineral Additives Originating from Vojvodina, Serbia
https://orcid.org/http://orcid.org/0000-0003-3029-9309
https://orcid.org/http://orcid.org/0000-0002-3482-9437
https://orcid.org/http://orcid.org/0000-0002-9340-5220
https://orcid.org/http://orcid.org/0000-0002-3081-1766
https://orcid.org/http://orcid.org/0000-0003-1565-822X
The present study focuses on evaluating seven different agricultural biomass ashes, generated by combustion of wheat straw, soya straw, cob corn, silo waste and oil rapeseed, as sustainable alternatives to carbon-intensive conventional cement. A detailed characterization was carried out from a chemical, mechanical and physical standpoint, aimed at exploring their potential as supplementary cementitious materials (SCM). The results indicated that all the ashes, where wheat straw and cob corn are the prevailing biomass sources, exhibited greater pozzolanic behavior and higher activity index, depending on the amorphous silica content and level of fineness. Furthermore, the influence of two optimal types of biomass ashes, selected based on the characterization results, on the tested mechanical and durability properties of cement-based mortars is also presented. The results indicate that mortars blended with a high volume of biomass ashes had comparable mechanical properties with reference values, owing to their pozzolanic activity, increased number of nucleation sites for cement hydration and the filler (packing) effect. However, due to the dilution effect, higher water absorption was registered for all blended mortars, pointing to the need for mix design optimization by lowering the effective water-to-binder ratio.
Availability and Reactivity of Agricultural Bio-Based Mineral Additives Originating from Vojvodina, Serbia
RILEM Bookseries
Amziane, Sofiane (editor) / Merta, Ildiko (editor) / Page, Jonathan (editor) / Šupić, Slobodan (author) / Pantić, Vladan (author) / Malešev, Mirjana (author) / Radonjanin, Vlastimir (author) / Lukić, Ivan (author)
International Conference on Bio-Based Building Materials ; 2023 ; Vienna, Austria
2023-06-14
11 pages
Article/Chapter (Book)
Electronic Resource
English
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