Enhancing the seismic resilience of residential buildings in Aotearoa through the reuse of waste tyres (2020)
Type of ContentPosters
- Posters 
AuthorsTasalloti, Ali, Chiaro, Gabrielle, Palermo, Alessandro, Hernandez, Ernesto, Liu, Royce, Granello, Gabriele, Banasiak, Laurashow all
Recycling and reuse of end-of-life tyres (ELTs) in civil engineering applications is an effective way to minimise environmental and health issues associated with such waste materials and reduce demand of natural resources such as gravel and sand. In New Zealand, only 30% of the 5 million ELTs produced annually are recycled. The residual 70% of ELTs are mainly disposed of through landfill, stockpiles or illegal disposal. A multi-disciplinary geo-structural-environmental engineering project, funded by the Ministry of Business Innovation and Employment (MBIE), is being carried out jointly by the University of Canterbury and the Institute of Environmental Science and Research Ltd. (ESR). The project aims to develop an eco-friendly geotechnical seismic isolation (ERGSI) foundation system for improving the seismic performance of medium-density low-rise buildings in Aotearoa, New Zealand. The ERGSI foundation system is characterised by two components: 1) a horizontal layer of granulated tyre rubber mixed with gravelly soils (rubgravel) placed beneath the foundation and 2) a basement raft made of steel-fibre reinforced rubberised concrete (rubcrete). The components of this system work together to improve seismic performance. The rubgravel layer dissipates part of the seismic energy before it reaches the superstructure and the steel fibre reinforced rubcrete enhances the crack control properties and flexural deformation capacity of the raft foundation. In this poster, a summary of the engineering properties of the rubgravel and rubcrete will be provided.