Research Articles | Challenge Journal of Concrete Research Letters

Mechanical properties of self-curing concrete (SCUC)

Noha Yehia Elwakkad, Khaled Mohamed Heiza


DOI: https://doi.org/10.20528/cjcrl.2019.01.001

Abstract


According to lack of water, labor self curing concrete (SCUC) is necessary in construction projects. In this study, it is focuses on concrete application with new admixture to achieve SCUC. The present study involves the use of shrinkage reducing admixture polyethylene glycol (PEG 400) in concrete which helps in self curing and helps in better hydration and hence strength. The effect of admixture (PEG 400) on water retention, compressive strength, split tensile strength and modulus of rupture by varying the percentage of PEG by weight of cement from 0% to 1% were studied for M1 and M2 mixes. It was found that using PEG400 with dosage 0.3%, 0.5% gives an early strength to the concrete. It was also found that 0.5% of PEG 400 by weight of cement was the optimum for both M1 and M2 mixes.


Keywords


self-curing concrete; water retention; relative humidity; hydration; absorption; water permeability

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