モルタルの透気性に及ぼす細骨材量の影響

概要

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Influence of fine aggregate concentration on air permeability of cement mortar is experimentally and analytically studied. The air permeability of cement mortar specimens of various fine aggregate concentrations were first measured. It was found out that an increase of concentration slightly reduced air permeability of the mortars in the range of lower concentration and, on the contrary, noticeably increased it in the higher concentration range. This results suggest that air permeability affected by the existence of boundary layers, which are considered to be highly porous, around the fine aggregates. Then, the two dimentional model composed of three components such as cement paste, fine aggregate and boundary layer was proposed, and the air permeability were calculated for mortars of various fine aggregate concentrations. Finally, the influence of concentration on air permeability of mortars was quantitatively discussed on the basis of the measured and calculated results.
社団法人日本建築学会の論文
1998-09-30