| Title | Evaluation of mechanical properties of cement mortars containing pond ash as partial replacement of river sand and prediction of properties by regression models |
|---|---|
| ID_Doc | 14307 |
| Authors | Sharma, S; Vyas, AK |
| Title | Evaluation of mechanical properties of cement mortars containing pond ash as partial replacement of river sand and prediction of properties by regression models |
| Year | 2024 |
| Published | European Journal Of Environmental And Civil Engineering, 28, 11 |
| Abstract | Despite vast research on the utilisation of coal ashes in cement mortars, many studies lack a comprehensive evaluation of properties related to mortar for masonry and plaster work. This study investigate properties like workability, compressive strength, drying shrinkage, tensile bond strength and adhesive strength through a systematic replacement of river sand by pond ash in cement mortars. Volumetric mix proportions of 1:3, 1:4, 1:5 and 1:6 (cement: sand) were considered, where river sand was replaced in the range of 20-100% by pond ash. At 30% pond ash content, properties like the compressive strength, tensile bond strength and adhesive strength improved in the range of 21-30%, 13-20% and 14-24%, respectively, for all mix proportions. At 60% pond ash content, these strength properties were comparable with those of control mixes and found suitable for mortars for masonry works. However, the drying shrinkage increased with an increase in pond ash content. At 30% pond ash content, drying shrinkage increased in the range of 26-40% for all mix proportions. The thermogravimetric analysis (TGA) showed that mixes with pond ash demonstrated reduced portlandite content compared to the control mixes, resulting in the formation of secondary C-S-H gel. Simple regression models were developed based on experimental results to establish the relationships between different properties. Based on coefficient of determination (R2), variance inflation factor (VIF) and Durbin-Watson statistics, relationships between the strength and shrinkage properties were very well quantified to be used by researchers and practitioners. Utilisation of pond ash as partial replacement of river sand in mortars proved to be a useful step towards achieving circular economy at the same time reducing threat to depletion of limited natural resources. |
Similar Articles
| ID | Score | Article |
|---|---|---|
14086
|
Sargent, P; Sandanayake, M; Law, DW; Hughes, DJ; Shifa, F; Borthwick, B; Scott, P Strength, mineralogical, microstructural and CO2 emission assessment of waste mortars comprising excavated soil, scallop shells and blast furnace slag(2024) | |
| 15007
|
Dwivedi, A; Bollam, R; Gupta, S Enhancement of engineering properties of cement mortars with masonry construction and demolition fines via carbon dioxide utilization, storage and chemical treatment(2024) | |
| 29318
|
Menéndez, E; Argiz, C; Recino, H; Sanjuán, MA Characterization of Mortars Made with Coal Ashes Identified as a Way Forward to Mitigate Climate Change(2022)Crystals, 12.0, 4 | |
| 5061
|
Wijesekara, DA; Sargent, P; Hughes, DJ; Ennis, CJ Sintered Bottom and Vitrified Silica Ashes Derived from Incinerated Municipal Solid Waste as Circular Economy-Friendly Partial Replacements for Cement in Mortars(2024)Waste And Biomass Valorization, 15, 5 | |
| 15443
|
Alexa-Stratulat, SM; Taranu, G; Toma, AM; Olteanu, I; Pastia, C; Bunea, G; Toma, IO Effect of expanded perlite aggregates and temperature on the strength and dynamic elastic properties of cement mortar(2024) | |
| 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 | |
| 15143
|
Ulewicz, M; Jura, J; Zielinski, A; Pietraszek, J The Application of Converter Sludge and Slag to Produce Ecological Cement Mortars(2024)Materials, 17, 17 | |
| 21822
|
Ulas, MA; Culcu, MB; Ulucan, M Valorization of recycled aggregates to eco-efficient lightweight self-compacting mortars: Studies on microstructure, mechanical, durability, environmental, and economic properties(2024) | |
| 25609
|
Sharifikolouei, E; Canonico, F; Salvo, M; Baino, F; Ferraris, M Vitrified and nonvitrified municipal solid wastes as ordinary Portland cement (OPC) and sand substitution in mortars(2020)International Journal Of Applied Ceramic Technology, 17, 2 | |
| 24905
|
Rodríguez-Alvaro, R; González-Fonteboa, B; Seara-Paz, S; Tenza-Abril, AJ Wood ash versus expanded clay aggregate as internal curing water reservoirs in high performance concrete(2022)Materials And Structures, 55, 4 |