Funct. Mater. 2024; 31 (1): 85-90.
Study of mechanical properties and thermal conductivity of energy storage phase change concrete with activated carbon
1 Huangshan University, School of Civil Engineering and Architecture, HuangShan 245041, China
2 Key Laboratory of Safety and High-efficiency Coal Mining, Ministry of Education(Anhui University of Science and Technology), Huainan 232001, China
The results of a study of the thermal conductivity and mechanical properties of phase change concrete with various fillers are presented. It has been shown that with the addition of an energy saving aggregate with activated carbon, the compressive and splitting strength of concrete decreases. The addition of silica powder can improve the compressive strength and splitting strength of concrete. When the content of the energy storage aggregate with activated carbon is 15% and the content of silica powder is 10%, the compressive and tensile strength of concrete increases. When the phase change material is in the liquid state, the thermal conductivity of the phase change concrete is greater than that in the solid state, and the increase range is less than 6%. With increasing content of energy storage aggregate with activated carbon, the thermal conductivity of phase change concrete increases significantly.
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