Precast concrete sandwich panels (PCSPs) have been widely used as the facade walls and load bearing walls in practical engineering. They mainly consist of inner and outer reinforced concrete wythes, core insulation wythes and connectors penetrating through the insulation. Depending on the stiffness, resistance, and distribution of the connectors, the PCSPs are classified as fully composite, partially composite and non-composite types. In this paper, a new type of PCSP system, which consists of two exterior wythes made by reinforced geopolymer concrete and a glass FRP (GFRP) connector, is proposed (Fig.1). The structural behaviours of the proposed new PCSP system are studied within the following contexts: (1) the individual performance of three types of the proposed GFRP connectors (i.e., flat plate, corrugated plate, and hexagonal tube connector); (2) structural performance of steel reinforced geopolymer concrete one-way slab; (3) structural performance of basalt FRP (BFRP) reinforced geopolymer concrete one-way slab; (4) structural performance of precast geopolymer concrete sandwich panels (PGCSP); (5) a simplified approach for predicting the deflection of PCSP; and (6) fire performance of the proposed PCSP. Upon the above work, an in-depth understanding of the mechanical performance of the proposed PCSP system has been achieved. The proposed PCSP system is expected to have great potential for applications in prefabricated building industry due to its improved durability, environmental friendliness and energy efficiency, which comply well the sustainability policy being promoted by the Hong Kong construction industry and beyond.
|Publication status||Published - Feb 2020|
|Event||3rd International Conference on Innovative Technologies for Clean and Sustainable Development (ITCSD2020)|
- Chandigarh, India
Duration: 19 Feb 2020 → 21 Feb 2020
|Conference||3rd International Conference on Innovative Technologies for Clean and Sustainable Development (ITCSD2020)|
|Period||19/02/20 → 21/02/20|