단면이 두꺼운 GFRP 보강 폴리머 모르타르 샌드위치 패널의 변형특성 = Characteristic of deformation for thick polymer mortar sandwich panels

국문 초록 (Abstract)

본 연구는 압축강도 840kgf/㎠를 갖는 폴리머 모르타르를 중심부로 하고 내ㆍ외표면은 고인장의 GFRP로 보강된 샌드위치 패널의 휨 거동에 관한 것으로 중심부 폴리머 모르타르 두께와 내ㆍ외면의 GFRP층 두께를 변수로 하였다. 실험결과, 폴리머 모르타르 두께가 2~36min의 범위에서 보강층 두께가 0.6에서 3mm로 증가함에 따라 변형에너지 및 연성지수는 각각, 16~340배, 2~8배로 현저히 증가하였다. 한편 폴리머 모르타르 두께가 두꺼울수록 증가비율은 감소하는 경향을 나타냈다.

다국어 초록 (Multilingual Abstract)

In this study, a polymer mortar sandwich panel(PMSP) was developed : Core was made with the polymer mortar whose compressive strength was about U kgf/㎠, and both facings were made with the glass fiber reinforced plastics(GFRP). The results showed that the strain energies and the ductility indices increased 16-340 times and 2-8 times, respectively, as the thicknesses of facings increased from 0.6 to 3.Omm with fixing the core thickness to constants(12-36mm). On the other hand, these values showed a tendency of decrease as the core thickness increased regardless of thickness of facings. A set of basic data for the structural analysis could be provided by investigating the correlations, within the scope of this research, between the resisting moment and the thicknesses of core and facings.