On the variability of chloride diffusion in modelled recycled aggregate concrete

Jingwei Ying, Jianzhuang Xiao, Vivian W. Y. Tam

    Research output: Contribution to journalArticlepeer-review

    30 Citations (Scopus)

    Abstract

    This paper proposes a new model to describe effects of recycled coarse aggregate (RCA) distribution on chloride diffusion from four modelled recycled aggregate concrete (RAC) with different RCA replacement ratios (RRA). Chloride diffusivities of each type of the modelled RAC are experimentally investigated using a rapid chloride migration (RCM) equipment and are simulated by a finite element method (FEM). The results show that the chloride diffusivities of the modelled RAC generally increase with the increase of R RA; while for the same RRA, the chloride diffusivities and the chloride concentration distribution in the modelled RAC are still different due to the effect of different aggregate arrangements; the chloride concentration distribution characteristics in the FEM model are verified using RCM testing; the variability of the modelled RAC for both chloride migration and compressive strength show consistent tendency, which can provide insights into RAC mix design.
    Original languageEnglish
    Pages (from-to)732-741
    Number of pages10
    JournalConstruction and Building Materials
    Volume41
    DOIs
    Publication statusPublished - 2013

    Fingerprint

    Dive into the research topics of 'On the variability of chloride diffusion in modelled recycled aggregate concrete'. Together they form a unique fingerprint.

    Cite this