Structural Performance of Modular Sandwich Composite Floor Slabs Containing Basalt FRP-Reinforced Self-Compacting Geopolymer Concrete

Abstract

A newly developed innovative steel–geopolymer concrete composite floor slab for use in modular construction is investigated in this study. We present experimental results on the flexural behaviour of eight modular sandwich composite floor slabs with different configurations containing self-compacting geopolymer concrete (SCGC) as infill and Basalt FRP (BFRP) bars as reinforcement. The use of sustainable infill material such as SCGC and non-corrosive BFRP in the proposed composite floor slabs is beneficial from the perspective of environmental sustainability. This study also compares the performance of these composite floor slabs against their hollow counterparts. The overlap between the cells in multi-cell panels acts as additional partitioning walls. The infill material offers the sandwich composite floor slabs significant advantages by improving their load-carrying capacity. A critical analysis of the composite floor slabs for load displacement, failure modes, and strain behaviour is also conducted. The study concludes that the sandwich panels with multiple smaller cells and infill materials exhibit a sound structural performance, reporting a 6–8 times higher load-carrying capacity than their hollow counterparts. A comparison of hollow and infilled panels shows that the infill sandwich panels are suitable as structural slabs. At the same time, the former is more suitable for temporary formworks, shelter, and pedestrian platform applications.

Influence of Ventilation Openings on the Energy Efficiency of Metal Frame Modular Constructions in Brazil Using BIM

“…Concrete is widely used in modular high-rise buildings due to its greater load-bearing capacity [44]. Moreover, recent developments in the modular construction market have highlighted some increasingly advanced materials, such as geopolymers (i.e., steel-geopolymer concrete composite [45] and geopolymer concrete combined with fly ash and blast furnace slag [46]).…”

Experimental and Artificial Neural Network-Based Study on the Sorptivity Characteristics of Geopolymer Concrete with Recycled Cementitious Materials and Basalt Fibres

“…This study thus analyses the workability and mechanical properties of geopolymer concrete modified with various lengths of chopped basalt fibres. The study also aims to provide a preliminary indication of the durability performance of the newly developed geopolymer concrete by the authors within the Deakin University facility which is a self-compacting and ambient cured type of geopolymer concrete [4,5,7,38,47]. This self-compacting geopolymer concrete does not use any ordinary Portland cement or superplasticisers to achieve the cementitious properties [4,5,7,38,47].…”

“…The study also aims to provide a preliminary indication of the durability performance of the newly developed geopolymer concrete by the authors within the Deakin University facility which is a self-compacting and ambient cured type of geopolymer concrete [4,5,7,38,47]. This self-compacting geopolymer concrete does not use any ordinary Portland cement or superplasticisers to achieve the cementitious properties [4,5,7,38,47]. The study also assesses the impact of adding basalt fibre to this self-compacting geopolymer concrete by evaluating the water absorption rates and sorptivity potential.…”