Research on the influence of nano calcium carbonate on the durability of building concrete Online publication date: Fri, 28-Apr-2023
by Shoujie Han; Feng Qiu; Yunfeng Zhao
International Journal of Microstructure and Materials Properties (IJMMP), Vol. 16, No. 5, 2023
Abstract: In view of the poor impermeability and carbonation resistance of building concrete materials, the influence of nano calcium carbonate on the durability of building concrete was studied in this paper. By determining the size of crystal particle size and calculating the carbonisation rate in the preparation process, the interface adsorption capacity of nano calcium carbonate was determined. Nano calcium carbonate is used to improve building concrete, and the strength loss rate and quality loss rate of concrete are calculated. The durability analysis of nano calcium carbonate on building concrete is completed. The results show that when the content of nano calcium carbonate is 2%, the impermeability of concrete specimens is always above 90%, indicating that the impermeability has been improved. After one month of carbonation, the maximum carbonation depth of concrete specimens is only 2.35 mm, which verifies that the improved impermeability and carbonation resistance are good.
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