굴 패각 분말을 충전재로 활용한 폴리머 콘크리트의 강도 및 내구 특성
Strength and Durability Properties of Polymer Concrete Utilizing Oyster Shell Powder as a Filler
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This study was performed to evaluate the workability, strengths and durability of polymer concrete using oyster shell that are reclaimed at public shore illegally or leaved on the surroundings of shore to prevent the environmental pollution. We investigated the effect of oyster shell powder (OSP) and CaCO₃. on the slump, compressive strength, flexural strength, acid sulfuric and freezing and thawing resistance as a filler of polymer concrete. Modified OSP obtained by crushing oyster shell (less than 0.15 mm size) consists of 60.47 wt% of SiO₂ and 39.5 wt% of CaCO₃. As a result of slump test by OSP and CaCO₃. contents, it is found that slump of specimen used OSP is lower than that used CaCO₃. and the more OSP contents are, its slump is increased. Compressive and flexural strength of polymer concrete using OSP are similar or slightly lower than that using CaCO₃. In acid sulfuric test for 5 % H₂SO₄ and freezing thawing test, regardless of kinds of fillers and contents are not found fatal defects in weight change, falling-off in surface and durability factor.
Abstract
This study was performed to evaluate the workability, strengths and durability of polymer concrete using oyster shell that are reclaimed at public shore illegally or leaved on the surroundings of shore to prevent the environmental pollution. We investigated the effect of oyster shell powder (OSP) and CaCO₃. on the slump, compressive strength, flexural strength, acid sulfuric and freezing and thawing resistance as a filler of polymer concrete. Modified OSP obtained by crushing oyster shell (less than 0.15 mm size) consists of 60.47 wt% of SiO₂ and 39.5 wt% of CaCO₃. As a result of slump test by OSP and CaCO₃. contents, it is found that slump of specimen used OSP is lower than that used CaCO₃. and the more OSP contents are, its slump is increased. Compressive and flexural strength of polymer concrete using OSP are similar or slightly lower than that using CaCO₃. In acid sulfuric test for 5 % H₂SO₄ and freezing thawing test, regardless of kinds of fillers and contents are not found fatal defects in weight change, falling-off in surface and durability factor.
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