A type of one-way concrete composite slabs made by strain hardening cementitious composites (SHCC) deck combined with high tensile reinforcements was developed and evaluated by four-point slab bending test. The SHCC material was considered to have an high-ductile and strain hardening behavior in tension after cracking. From experimental comparisons with conventional reinforced concrete slab, the proposed SHCC and high tensile reinforced concrete composite slab showed more improved responses both in service and ultimate load capacities as well as in control of crack width and deflection.

These days, the Composite Slabs with Deep Deck plate was commonly used in domestic construction site, and, the application of the Slim Floor system was increased from the Enlargement and High-rise Building. But, Slim Floor system using the Deep Deck was shown safety problem caused by the deflection and local buckling in construction phase when used to more than 6m. Therefore, for solving the problem, the installation of the shores is essential. This study is realize the long span slab without shores from control the deflection through applied the pre-tensioning elements in CAP deck. In addition, by applying the pre-tensioning member as the tensile member of the CAP Deck slab, the pre-tensioning member for the shores tries to be used as the structural member. Accordingly, to determine the flexural performance of the CAP Deck slab through the pre-tensioning force in tensile member, and, the composite effect of the CAP Deck slab by the experiments.

These days, the Composite Slabs with Deep deck plate was commonly used in domestic construction site, and, the application of the Slim Floor system was increased from the Enlargement and High-rise Building. But, Slim Floor system using the deep deck was shown safety problem caused by the deflection and local buckling in construction phase when used to more than 6m. Therefore, for solving the problem, the installation of the shores is essential. This study is realize the long span slab without shores from control the deflection through applied the pre-tensioning elements in cap deck. In addition, by applying the pre-tensioning member as the tensile member of the Cap Deck composite slab, the pre-tensioning member for the shores tries to be used as the structural member. Accordingly, to determine the flexural performance of the Cap deck composite slab through the pre-tensioning force in tensile member, and, the composite effect of the cap deck composite slab by the experiments.

압출성형 ECC 패널을 활용한 철근콘크리트 복합 슬래브 구조에 대한 비선형 휨 해석 모델을 새롭게 제시하였다. ECC 패널은 직접인장시험 결과로부터 균열 이후에 고인성 인장거동을 하는 재료로 모델링하였다. 개발 모델을 기존 철근콘크리트 슬래브 및 ECC 패널 철근콘크리트 복합슬래브 실험체의 휨 실험결과와 비교하였다. 예측결과는 실험결과와 잘 일치하였으며, ECC 패널 적용 철근콘크리트 복합슬래브는 균열제어, 휨내력 및 휨변형능력 개선에 장점이 있는 것으로 판단되었다.

이 연구에서는 전단연결재의 종류를 변수로 더블리브유닛 깊은 데크플레이트 슬래브의 휨 실험을 수행하였으며, 실험결과를 기반으로 비선형유한요소해석을 통하여 춤이 깊은 데크플레이트와 콘크리트 사이의 합성도를 평가하였다. 그 결과, 전단 연결재가 설치되어 있는 경우 휨 강성 및 강도가 크게 향상되는 것으로 나타났다.

In this study, a half-precast composite concrete slab using a strain-hardening cementitious composites has been tested. To compare with RC slabs, the developed slab can minimize longtitudinal reinforcements and improve crack control through strain-hardening behavior of fiber cementitious composite.

This paper presents a half-precast composite concrete slab using a strain-hardening cementitious composites (SHCC). The flexural characteristics of SHCC-RC Composite slab was evaluated with a conventional reinforced concrete slab and the composite slab was excellent in crack control to compare with the reinforced concrete slab.

In this paper, experimental study of composite slab systems was performed. The slab system could minimize reinforcements and improve crack control by applying high-ductile cementitious composites. In the application of the field construction, the construction process of the half-precast system could minimize the formwork of concrete construction.

This paper describes the results of experimental testing of GFRP composite beam strengthened reinforced concrete (RC) slabs with two symmetrical openings. The aim of this study is to investigate the most effective strengthening method using GFRP composite beams in slabs with openings for enhancing the load-carrying capacity and stiffness. Test results showed that the strengthened slabs seem to increase the load-carrying capacity by 29%, 21% and 12% over that of the control specimen for diagonal, parallel and surround strengthening, respectively. Furthermore, test results showed that diagonal-strengthened system is one of the most effective methods for RC slab with openings in terms of load-carrying capacity, stiffness and crack patterns.

This paper presents a reinforced concrete composite slab with a strain-hardening cementitious composites (SHCC). This slab system has merits in longer-span. minimizing the reinforcements as well as improving crack control. The field application in construction is suitable to apply the non-supporting formwork system in construction.

To evaluate the flexural performance of composite precast concrete ribbed slabs, tests are conducted with the variables of dapped-end configurations, support conditions, and longitudinal reinforcements. As the result of the tests, the performance should be evaluated by experiments and analyses using STM(Strut-Tie Model) for the design of dapped-end members