GRAVICON - a fully disassemblable load- bearing system for re-use concrete slabs

The project develops a novel steel connection system to integrate reused concrete slabs into new structures, creating a low-carbon, disassemblable system. By applying DFD principles, it extends the lifecycle of building element and enables structural flexibility across multiple generations.

Key data

Description

The construction industry is one of the largest contributors to CO₂ emissions and material waste, accounting for approximately 30% of global CO₂ emissions and 80% of waste in Switzerland. To address this challenge, this project aims to develop a novel steel connection system that enables the integration of reused reinforced concrete slabs with newly produced reinforced concrete beamsThe goal is to create an innovative structurally sound, low-carbon, and fully disassemblable load-bearing system that adheres to Design for Disassembly (DfD) principles, ensuring that structural components can be efficiently dismantled and reused in future applications.

Reusing concrete slabs instead of demolishing them significantly reduces embodied carbon emissions and material waste, This project advances the field by developing a scalable and standardized circular construction solution that can be implemented across various building typologies. The system utilizes a to be developed mechanical steel connection to securely attach reused slabs to new beams, preserving their structural integrity while enabling future adaptability and reuse. This new connection will be developed together and sold by the implementation partner Gravis.

This project builds upon prior research conducted at ZHAW, including a CBI Booster. A solution like this has the potential to reduce CO₂ emissions by 67% compared to a new, non-DfD structure. This approach directly aligns with global sustainability goals by minimizing waste, lowering carbon emissions, and promoting circular construction practices. The outcome will be a validated, scalable structural solution that enhances the viability of concrete reuse. By integrating DfD strategies and circular economy principles, this innovation enables structures to withstand multiple lifecycles, contributing to a climate-resilient built environment and aiming to transform the construction industry’s approach to material reuse. Such a system does not exist yet.