Internal Curing of UHPC Using Scoria Sand: Autogenous Shrinkage, Strength and Transport Properties

Authors

1 Department of Structural Engineering, Faculty of Civil Engineering, University of Tabriz, Tabriz, Iran

2 Faculty of Civil Engineering, University of Tabriz, Tabriz, Iran

3 Faculty of Civil Engineering, University of Tabriz, Tabriz. Iran

10.22034/ceej.2025.66789.2428

Abstract

Various methods and strategies have been reported to mitigate the Autogenous shrinkage of Concrete Such as implementation of internal curing and Shrinkage-Reducing Materials. The method and approach examined in this research is internal curing. This paper presents the results of a laboratory investigation into the key properties of ultra high-performance concrete containing different percentages of pre-soaked scoria sand. In this research, the properties of UHPC containing five different amounts of pre-soaked scoria sand (0, 25, 50, 75, and 100% by volume) were investigated. Autogenous shrinkage in UHPC containing different amounts of pre-soaked scoria sand was measured and compared with control specimens. Furthermore, Compressive and flexural strengths, pulse velocity, capillary water absorption, and water absorption percentage at the age of 7, 28, and 90 days were obtained and evaluated as mechanical and transport properties.

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