수축저감제 및 팽창재를 혼입한 HPC 충전용 콘크리트의 건조수축 특성 검토

Study on Drying Shrinkage Properties of HPC Infilled Concrete Mixing Shrinkage Reducing Agent and Expansive Agent

In case of the concrete is poured into the HPC(Hollow Precast Concrete) column, the shrinkage condition of the HPC surface and the infilled concrete may be different, causing an interfacial space and deteriorating the integration performance. In this study, manufacturing HPC column mold and and the drying shrinkage properties with the charging concrete were examined. As a result, case of the shrinkage reducing agent showed the best drying shrinkage reduction effect. In the case of the expansive agent, the length change was lower than that of plain, but the difference from the shrinkage reducing agent was large, so it is considered that mixing condition of expansion mixing condition should be improved.