Abstract
The present study aims to investigate the impact of thermal energy storage aggregate (TESA) and nano-titanium (NT) on properties of structural concrete. TESA was made of scoria encapsulated with phase change materials (PCMs). Coarse aggregates were replaced by TESA at 100% by volume of aggregate and NT was added at 5% by weight of cement. Compressive strength, probability of corrosion, thermal performance, and microstructure properties were studied. The results indicated that the presence of TESA reduced the compressive strength of concrete, although the strength was still high enough to be used as structural concrete. The use of TESA significantly improved the thermal performance of concrete, and slightly improved the resistance of corrosion in concrete. The thermal test results showed that TESA concrete reduces the peak temperature by 2 °C compared to the control. The addition of NT changed the microstructure of concrete, which resulted in higher compressive strength. Additionally, the use of NT further enhanced the thermal performance of TESA concrete by reducing the probability of corrosion remarkably. These results confirmed the crucial role of NT in improving the permeability and the thermal conductivity of mixtures containing PCM. In other words, the charging and discharging of TESA was enhanced with the presence of NT in the mixture.
Highlights
Management of energy consumption and determination of energy reduction strategies in buildings are associated with the assessment of the types of energy required for the building
The increase in strength confirms that nanoparticles have the ability to fill the pores and make the the compressive strength values were still high enough to be used as structural concrete
Concrete containing thermal energy storage aggregate (TESA) exhibited a 27% reduction of compressive strength on average, the compressive strength values were still high enough to be used as structural concrete
Summary
Management of energy consumption and determination of energy reduction strategies in buildings are associated with the assessment of the types of energy required for the building (heating, cooling, and electrical). Energy consumption management presents a method to measure the actual energy requirements of a building, and it proposes appropriate solutions to reduce and minimize the consumption. The use of contemporary methods and renewable energies for building consumption management receives significant attention worldwide. Global population growth, reduced energy sources, and increased fossil fuel emissions have resulted in global communities using renewable energies all over the world. One of the most important ways to use solar energy is the storage of solar energy during hot hours and release of the energy when
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