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- W4308487078 abstract "Cement-sand block is a primary construction material used for masonry house units. River sand and cement are the two main ingredients in cement block construction; however, cement is notoriously unfriendly to the environment due to excessive energy consumption during cement manufacture and considerable CO2 and other greenhouse gas emissions. Overusing river sand has several adverse effects on the environment and society, including a deepening of the riverbed, a decline in the water table, and the extinction of freshwater aquatic life. Therefore, finding substitutes for cement and river sand has received much attention in recent years. It would be beneficial to use fly ash and quarry refuse for making masonry blocks since it would use less energy and cause less environmental damage. The present study emphasizes the combined use of quarry waste (100% substitute for river sand) and fly ash (0, 10, 20, 30 and 40% substitute for cement) for sustainable masonry block production. The physical, mechanical, and durability properties of cement blocks made using fly ash and quarry waste underwent a thorough investigation. Results showed that, even though the compressive strength and impact strength of masonry blocks decreased with fly ash content, the strength of masonry blocks with quarry waste and 40% fly ash was higher than that of conventional masonry blocks. The substitution of fly ash for cement potentially increased the alkaline and acid resistance and also improved the thermal performance. Also, the replacement of fly ash for cement in the masonry blocks significantly reduced the total cost, embodied energy and CO2 emission. It can be inferred from the study that using quarry waste as a full river sand substitute and fly ash as a partial cement substitute in masonry blocks is a cost-effective and sustainable method." @default.
- W4308487078 created "2022-11-12" @default.
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- W4308487078 date "2022-12-01" @default.
- W4308487078 modified "2023-09-28" @default.
- W4308487078 title "Sustainable production of cement masonry blocks with the combined use of fly ash and quarry waste" @default.
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- W4308487078 doi "https://doi.org/10.1016/j.mtla.2022.101621" @default.
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