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Assesment of the surface permeation properties of recycled aggragate concrete

type de publication      article dans une revue internationale avec comité de lecture
date de publication 2003
auteur(s) Zaharieva Roumiana; Buyle-Bodin François; Skoczylas Frédéric; Wirquin Eric
journal (abréviation) Cement & Concrete Composites (Cement Concr Compos)
volume (numéro) 25 (2)
  
pages 223 – 232
résumé The water permeability, air permeability and surface permeability of recycled aggregate concrete (RAC) are compared with those of a control concrete made with natural aggregate. The study shows that the permeation properties of RAC depend on mix-design, conditions of curing and drying of samples. Relationships between permeability and other physical characteristics of concrete such as water absorption capacity and diffusivity are discussed. According to the criteria existing for ordinary concrete made with natural aggregate, RAC could be classified as being of moderate quality rather than poor quality. The testing methodology shows that some of the techniques used to measure the permeability of RAC need to be modified in order with the distinctive characteristics of this material.
mots clés Buildng wastes; Recycled aggregates; Concrete; Permeability; Tests; Durability
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