论文?报告
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产业副产物系の混和材と细骨材を用いて、超低収缩と超高强度を达成したモルタルを开発し、各种性能について市贩の超高强度型および一般用无収缩モルタルと比较した。その结果、市贩の超高强度型无収缩モルタルに比べても强度が高く、かつ、乾燥収缩ひずみと自己収缩ひずみの両方が非常に小さいことが分かった。中性化、冻结融解および塩化物イオンの浸透に対する抵抗性も市贩の无収缩モルタルと同等以上であった。プレキャストセグメント接合目地模型への充填性が良好であること、硬化后のひび割れが市贩の无収缩モルタルに比べて大幅に少ないことを确认し、実桥のプレキャストセグメント接合目地へ适用し良好な结果を得た。 キーワード: 无収缩モルタル、超低収缩、超高强度、高耐久性、セグメント接合目地 |
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Ultra-low shrinkage and ultra-high strength mortar using industrial by-product SCMs and fine aggregate was developed and its performance was compared with commonly used commercial ultra-highstrength type and general type non-shrink mortars. It was confirmed that developed mortar's compressive strength is higher and both drying and autogenous shrinkage are extremely lower than compared non-shrink mortars. Also, it's resistance to carbonation, freezing and thawing, and chloride ions penetration were equivalent or higher than them. Furthermore, the applicability of developed mortar to precast segment joint part was confirmed. In particular; there were significant fewer cracks and sufficient filling performance than compared non-shrink mortar. Through these investigations, developed mortar was applied to precast segment joint part of actual bridge and successful results could be obtained. Key Words: Non-shrink mortar, Ultra-low shrinkage, Ultra-high strength, High durability, Segment joints |
论文