This study investigates the structural behavior and shear bond strength of composite slabs composed of profiled steel deck and ultra-lightweight cementitious composite (ULCC). ULCC topping with a density of about 1440 kg/m³ was used to reduce the dead weight of the composite slabs. An experimental investigation was carried out to determine the shear bond characteristics between the profiled steel sheet and the ULCC. Eight composite slabs of different shear spans were tested in accordance with EN 1994-1-1:2004, in which six slabs contained ULCC and the remaining two slabs contained normal weight concrete (NWC) to serve as a benchmark for comparison. The shear bond behavior of the ULCC composite slabs was compared to that of the NWC slabs using two sets of slabs with short and long shear span lengths. The composite slabs with ULCC topping showed higher ductile behavior and load-carrying capacity than the composite slabs with NWC topping. The shear bond properties of the composite slab with ULCC were determined using the semi-empirical m−k method and the partial shear connection method (PSC) according to EN 1994-1-1:2004. For comparison purposes, the shear bond properties of NWC composite slabs were determined. ULCC was found to provide equivalent shear bond strength with profiled steel sheet compared to the conventional composite slab with NWC. Therefore, ULCC can be used effectively in composite slabs with a greater reduction in self-weight.

本研究调查了由型钢桥面板和超轻质水泥基复合材料 (ULCC) 组成的复合板的结构行为和剪切粘结强度。密度约为 1440 kg/m ^{3 的}ULCC 面层用于减少复合板的自重。进行了一项实验研究，以确定压型钢板和 ULCC 之间的剪切粘合特性。根据 EN 1994-1-1:2004 测试了八块不同剪切跨度的复合板，其中六块板含有 ULCC，其余两块板含有正常重量混凝土 (NWC)，作为比较的基准。ULCC 复合板的剪切粘结性能与 NWC 板的剪切粘结性能进行了比较，使用两组具有短和长剪切跨度的板。ULCC 覆盖的复合板比 NWC 覆盖的复合板具有更高的延展性和承载能力。使用半经验m-k确定具有 ULCC 的复合板的剪切粘合性能方法和部分剪切连接方法 (PSC)，符合 EN 1994-1-1:2004。为了比较，确定了 NWC 复合板的剪切粘合性能。与带有 NWC 的传统复合板相比，ULCC 被发现可以为压型钢板提供等效的剪切粘合强度。因此，ULCC 可以有效地用于复合板，并大大降低自重。