| Title | Synthesis and characterization of alkali-activated materials containing biomass fly ash and metakaolin: effect of the soluble salt content of the residue |
|---|---|
| ID_Doc | 19953 |
| Authors | Jurado-Contreras, S; Bonet-Martínez, E; Sánchez-Soto, PJ; Gencel, O; Eliche-Quesada, D |
| Title | Synthesis and characterization of alkali-activated materials containing biomass fly ash and metakaolin: effect of the soluble salt content of the residue |
| Year | 2022 |
| Published | Archives Of Civil And Mechanical Engineering, 22.0, 3 |
| Abstract | The present study investigates the production and characterization of alkali-activated bricks prepared with mixing metakaolin (MK) and biomass fly ash from the combustion of a mix of pine pruning, forest residues and energy crops (BFA). To use this low cost and high availability waste, different specimens were prepared by mixing MK with different proportions of BFA (25, 50 and 75 wt%). Specimens containing only metakaolin and biomass fly ash were produced for the purpose of comparison. Effects of the alkali content of biomass fly ash, after a washing pretreatment (WBFA), as well as the concentration of NaOH solution on the physical, mechanical and microstructural properties of the alkali-activated bricks were studied. It was observed that up to 50 wt% addition of the residue increases compressive strength of alkali-activated bricks. Alkalinity and soluble salts in fly ash have a positive effect, leading materials with the improved mechanical properties. Concentration of NaOH 8 M or higher is required to obtain optimum mechanical properties. The compressive strength increases from 23.0 MPa for the control bricks to 44.0 and 37.2 MPa with the addition of 50 wt% BFA and WBFA, respectively, indicating an increase of more than 60%. Therefore, the use of biomass fly ash provides additional alkali (K) sources that could improve the dissolution of MK resulting in high polycondensation. However, to obtain optimum mechanical properties, the amount of BFA cannot be above 50 wt%. |
| https://link.springer.com/content/pdf/10.1007/s43452-022-00444-2.pdf |
Similar Articles
| ID | Score | Article |
|---|---|---|
17819
|
Fernando, S; Gunasekara, C; Law, DW; Nasvi, MCM; Setunge, S; Dissanayake, R; Ismail, MGMU Investigation of the reaction mechanism of blended fly ash and rice husk ash alkali-activated binders(2021)Archives Of Civil And Mechanical Engineering, 22, 1 | |
| 13417
|
Saeli, M; Tobaldi, DM; Seabra, MP; Labrincha, JA Mix design and mechanical performance of geopolymeric binders and mortars using biomass fly ash and alkaline effluent from paper-pulp industry(2019) | |
| 19603
|
Fernando, S; Gunasekara, C; Law, DW; Nasvi, MCM; Setunge, S; Dissanayake, R; Robert, D Environmental evaluation and economic analysis of fly ash-rice husk ash blended alkali-activated bricks(2022) | |
| 13486
|
Gómez-Casero, MA; De Dios-Arana, C; Bueno-Rodríguez, JS; Pérez-Villarejo, L; Eliche-Quesada, D Physical, mechanical and thermal properties of metakaolin-fly ash geopolymers(2022) | |
| 8172
|
Modolo, RCE; Senff, L; Ferreira, VM; Tarelho, LAC; Moraes, CAM Fly ash from biomass combustion as replacement raw material and its influence on the mortars durability(2018)Journal Of Material Cycles And Waste Management, 20.0, 2 | |
| 9847
|
Wisniewski, K; Rutkowska, G; Jeleniewicz, K; Dabkowski, N; Wójt, J; Chalecki, M; Wierzbicki, T Ecologically Friendly Building Materials: A Case Study of Clay-Ash Composites for the Efficient Management of Fly Ash from the Thermal Conversion of Sewage Sludge(2024)Sustainability, 16.0, 9 | |
| 14541
|
Pavlíková, M; Zemanová, L; Záleská, M; Pokorny, J; Lojka, M; Jankovsky, O; Pavlík, Z Ternary Blended Binder for Production of a Novel Type of Lightweight Repair Mortar(2019)Materials, 12, 6 | |
| 18446
|
Fernando, S; Gunasekara, C; Law, DW; Nasvi, MCM; Setunge, S; Dissanayake, R Engineering properties of waste-based alkali activated concrete brick containing low calcium fly ash and rice husk ash: A comparison with traditional Portland cement concrete brick(2022) | |
| 27597
|
Kirkelund, GM; Skevi, L; Ottosen, LM Electrodialytically treated MSWI fly ash use in clay bricks(2020) | |
| 9453
|
Taleb-Ahmed, A; Montrelay, N; Houessou, KJ; Queneudec-t'Kint, M; Sebaibi, N; Dheilly, RM Influence of the Mass Percentage of Bottom Ash and Its State of Maturation on the Mechanical Performance of a Bio-Composite(2024)Buildings, 14.0, 8 |