Improvement in Concrete Performance and Durability Using Permeable Sheet


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Title: Improvement in Concrete Performance and Durability Using Permeable Sheet

Author(s): Y. Tsukinaga, M. Shoya, R. Sugawara, and H. Nonome

Publication: Special Publication

Volume: 154


Appears on pages(s): 279-300

Keywords: air entrainment; carbonation; chlorides; durability; freeze thaw durability; penetration tests; permeability; porosity; shotcrete; tensile stress; water-cement ratio; Materials Research

Date: 5/1/1995

In this study, the use of a new permeable sheet was evaluated in making the surface layer of concrete denser, thus improving the performance and durability of the concrete. The application of permeable sheet was confirmed effective in the lowering of water-cement ratio corresponding to the decrease of pore volume; this resulted in the increase of pull-off of tensile strength, rebound number, pulse velocity, and pin penetration resistance in the surface layer. It was also observed that the air bubbles were likely to move from the internal portion to the surface with the expelled flow of water, remarkably reducing bugholes on the concrete surface. The use of new type of permeable sheet improved resistance to freezing and thawing cycling and reduced the depth of carbonation and the ingress of chloride ions. Furthermore, the water tightness was also improved.