セメント系押出成形材料の曲げ強度に及ぼす骨材の最大寸法の影響

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  • EFFECTS OF AGGREGATE SIZE ON FLEXURAL STRENGTH AND DENSIFICATION OF CEMENTITIOUS MATERIALS PRODUCED BY EXTRUSION MOULDING
  • セメントケイ オシダシ セイケイ ザイリョウ ノ マゲ キョウド ニ オヨボス

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Particle reinforced cementitious mixtures with six maximum sizes of silica sand (No.3-8) and various water content ratios were prepared for clarifying the effects of the aggregate size on the flexural strength and the densification under extrusion moulding. The densities of mixtures at each moulding process were measured. No.6 silica sand of which maximum size was the most similar to standard sand obtained the highest flexural strength. It is also verified that total void ratio including water content to cement is effective for predicting the flexural strength of extruded cement mortar although the tendency of densifying is dependent on maximum size.

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