710424Creating low-cost, interlocking, relocatable barrier blocks, from 100% recycled materials, using novel geopolymer from recycled CRT glassClosedGRD Proof of ConceptInnovate UKAlthough cement is a strong construction material, its manufacture produces the same weight of CO2 as it does cement (this was 5 billion tonnes last year). An alternative eco-friendly setting agent can be produced from sodium and aluminium silicates, that combine to form a geopolymer – a glassy rock-like material that can be made harder and more durable than concrete. We have identified an opportunity to produce geopolymer material in an exceptionally eco- friendly way by utilising waste streams from another recycling process – one developed by our sister company to remove toxic lead from CRT glass screens. Once the lead is removed and prepared for sale, they have a clean output stream of mixed silicates. Our project is to develop the method to prepare this silicate material into the form that it can be used to form a geopolymer. This geopolymer is intended to be stronger, denser, more resistant to chemical attack and more waterproof than concrete. We plan to develop it for use in our 1-tonne ‘Lego’ style interlocking blocks. These blocks provide an easy to install, flexible and re-usable construction system with unparalleled protection from impact, blast and water. It is suitable for temporary, emergency or permanent construction. It is a flexible & low cost construction system that is easy to use, quick & simple to build, dismantle & re-locate. Due to its unique interlocking design it can be dry laid, or it can be laid with mortar for a permanent solution. No maintenance is required. Two men can dry lay a 50-metre long 1.2m high wall in just 1 hour. It can be used for a wide variety of applications such as; • Flood Defence - permanent or mobile as part of Environment Agency’s strategy • Land Defence - landslide protection & erosion control (permanent or mobile) • Security & Construction - walls, compounds, barriers • Transport - road & culvert repairs, railway embankments, barriers • Bulk Storage & Segregation – construction; agriculture; recycling