Why is cement replacement ranges from 10% to 20%?
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The range of cement replacement from 10% to 20% is determined based on various studies focusing on different waste materials. Research on waste clay brick powder (CBP) found that replacing 10-20% of cement with CBP resulted in good compressive strength in mortar specimens . Similarly, investigations on Municipal Solid Waste Incineration (MSWI) ashes revealed that the optimum percentage of cement replacement was 20% for Boiler Ash (BOA) and 10% for Residue Ash (RA) to maintain workability, setting time, and strength of cement-based composites . Additionally, utilizing NBRRI pozzolan as a cement replacement in mortar and concrete showed that NBRRI pozzolan can effectively replace cement at varying percentages (10%, 20%, 30%, 40%) without compromising strength performance, especially when high strength is not a critical requirement .
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| Papers (4) | Insight |
|---|---|
| Cement replacement ranges from 10% to 20% with NBRRI pozzolan to enhance mortar and concrete strength, as tested at 7, 14, and 28 days, showing improved performance over time. | |
| Cement is replaced by 10% to 15% with used paints in plaster mortars to enhance bending strengths, reduce waste, and contribute to environmental protection through recycling construction materials. | |
| Cement replacement ranges from 10% to 20% due to optimal setting time, workability, and compressive strength achieved with 10% replacement for Residue Ash (RA) and 20% for Boiler Ash (BOA). | |
| Cement replacement ranges from 10% to 20% with clay brick powder due to achieving good compressive strength in mortar specimens, indicating potential for up to 20% cement replacement. |
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