Insights on the Corrosion Resistance of Reinforced Recycled Aggregate Concrete

Corrosion and Materials Degradation

Lautaro R. Santillán¹  María E. Sosa²  Carlos M. Pico-Cortés³  Yury A. Villagrán-Zaccardi⁴  Juan M. Etcheverry⁴ 

[1] Instituto de Investigación en Tecnologías y Ciencias de la Ingeniería, National University of Comahue, National Scientific and Technical Research Council, Neuquen 8300, Argentina;LEMaC Centro de Investigaciones Viales, National University of Technology, National Scientific and Technical Research Council, La Plata 1900, Argentina;Laboratorio de Entrenamiento Multidisciplinario para la Investigación Tecnológica, National Scientific and Technical Research Council, La Plata 1900, Argentina;Magnel-Vandepitte Laboratory for Structural Engineering and Construction Materials, Ghent University, 9000 Ghent, Belgium;

关键词: recycled aggregate concrete;    corrosion;    carbonation;    chloride ingress;    durability;   

DOI  :  10.3390/cmd3020011

来源: DOAJ

【 摘 要 】

Recycled aggregate produced from crushed waste concrete is suitable for use in structural concrete. It reduces the demand for non-renewable resources and also for energy in general. However, RA is more porous than most natural aggregates. The porosity of the concrete cover defines the corrosion resistance of reinforced concrete, and it is therefore disputed how the use of recycled aggregate may affect the durability of reinforced concrete. This paper describes the corrosion-related performance of reinforced concrete with recycled aggregates in the initiation stage (determined by the carbonation and chloride ingress) and propagation stage (determined by the electrical resistivity and cracking) of corrosion. The aspects of interest are not only the porosity of RA but also its effects on the chloride binding, carbonation, electrochemical properties and corrosion cracking development.

【 授权许可】

Unknown