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S. Al-Bahar,J. Chakkamalayath,A. Joseph,S. Al-Otaibi,M. Abdulsalam 대한토목학회 2018 KSCE JOURNAL OF CIVIL ENGINEERING Vol.22 No.4
The current trend in concrete science and technology is to characterize the cementitious materials in multiscales so that the optimalperformance of concrete can be achieved with the minimal use of cement as well as sustainable materials. It has been realized that thenew properties of many materials are discovered when examined at nanoscale. Nanoindentation test has been adopted as a techniqueto examine the nanomechanical properties of cementitious materials leading to an improvement of their macro-mechanicalperformance in terms of strength development, tailoring of desired properties, and durability. The evidence of an experimentalinvestigation to evaluate the influence of micro- and nanocement additives on the nanomechanical properties and the surfacemorphology of the hydrated cement paste is presented in this paper. The effect of additives on the compressive strength of binary andternary blended cement paste was also examined. It could be concluded from these studies that the effect of the additives on theproperties of cement paste matrix at macroscale, microscale, and nanoscale can be correlated, and mixes can be designed for theoptimal performance by multiscale investigation.
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