Carbonation Resistance Classes of Concretes

Romanian Journal of Transport Infrastructure

Moraru Cristinel¹  Apostu Adelina²  Georgescu Dan³ 

[1] Drd. Ing, S.C. HeidelbergCement Romania S.A., Bucharest;Fiz. Dr., Technical University of Civil EngineeringBucharest;Prof. Dr. Ing., Technical University of Civil EngineeringBucharest;

关键词: carbonation;    concrete;    cement;    durability;   

DOI  :  10.2478/rjti-2021-0004

来源: DOAJ

【 摘 要 】

Concrete carbonation is a phenomenon that occurs by the penetration into the cement stone of CO2 present in the atmosphere. The phenomenon occurs in the presence of water in which CO2 dissolves, forming carbonate ions, which in turn react with calcium ions in the pores of the concrete, resulting in calcium carbonate (calcite). The diffusion of CO2 occurs through pores and surface defects, it thus penetrates deeper into the concrete and the carbonation reaction can occur at a greater depth, eventually exceeding the thickness of the cover, causing corrosion of the reinforcement. [1]

【 授权许可】

Unknown