Impact of Different Curing Techniques in Evaluating the Strength of the Roller Compacted Concrete Containing Waste Materials
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Abstract
The main objective of this laboratory study was to produce environmentally friendly, sustainable roller-compacted concrete (SRCC) that meets the required strength by utilizing waste building materials such as waste thermostone block as a partial volume replacement of fine aggregate by two percentages (15% and 30%) and filler by 50%. Along with standard curing, three different curing regimes were tested: spray-water, liquid-membrane compound (Sika Antisol-WB), and damp-burlap. Regarding the curing methods, the liquid-membrane compound achieved the best results compared to standard-curing, followed by damp-burlap. On the other hand, spray-water resulted in the poorest performance, yielding lower results than standard-curing. The results showed that the SRCC mixture containing waste thermostone block (by 15% substitute of fine aggregate and by 50% substitute of filler) improved the compressive, flexural, and tensile strengths by 1.66%, 1.51%, and 1.68%, respectively, after 28 days of standard-curing compared to the reference-mixture. While the SRCC mixture containing waste thermostone block (by 30% substitute of fine aggregate and by 50% substitute of filler) deteriorated the compressive, flexural, and tensile strengths by 4.97, 4.24, and 3.98%, respectively, after 28 days of standard-curing compared to the reference-mixture.
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