Abstract
Self-compacting concrete (SCC) has been increasingly used in the construction sector due to its favorable characteristics in improving various durability and rheology aspects of concrete such as deformability and segregation resistance. Recently, the studies on the application of nano-alumina (NA) produced from factory wastes have been significantly considered to enhancing the performance, and mechanical strength, of SCC. Many experimental works show that NA can be used in SCC with appropriate proportion to enjoy the benefits of improved microstructure, fresh and hardened properties, durability, and resistance to elevated temperature. However, a limited detailed review is available to particularly study using NA to improve the performance of SCC, so far. Hence, the present study is conducted to fill the existing gap of knowledge. In this study, the effect of using NA in improving rheological, mechanical parameters, and elevated temperature resistance of SCC is reviewed. This research summarized the studies in this area, which have been different from the previous researches, and provided a discussion on limitations, practical implications, and suggestions for future studies.
Highlights
The chemical effect of TiO2 as partial replacement of cement accelerates the formation of C–S–H gel and hydration resulting in increased split tensile strength of concrete specimens
It was observed that addition of NA into the mix enhances the compressive strength of Self-compacting concrete (SCC) for samples cured at 28-day in temperature under 100 ◦ C
This review is aimed to investigate the effect of NA on rheology and mechanical parameters of SCC subjected to elevated temperature
Summary
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. Nazari and Riahi [9] reported that the addition of nano-alumina (NA) particles into concrete mixtures can enhance strength gaining, water permeability, and the pore structure characteristics of concrete. The compressive strength of SCC compared to the ordinary concrete with the same water to cement ratio is considerably higher [16]. Nazari and Riahi [19] indicated that the inclusion of SiO2 nanoparticles enhances the flexural strength of SCC and accelerates cement hydration. It was reported that the inclusion of NA in SCC can accelerate the formation of hydrated products, and pore structure while reducing the workability of fresh concrete, water absorption of hardened specimens [28]. By offering a discussion on the application of NA in SCC
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