Keystone uses a unique high strength fixing system which securely locks the component parts in place. At the centre of the system is the patented blue comb connector that provides exceptionally high connection strengths.
A combination of Keystone modular units, positive pin connections and soil reinforcing geogrids delivers ‘rock solid’ stability and performance its enhanced connection between grid and block is critical to ensure economic designs.
Keystone’s ability to connect positively with proprietary geogrid systems has enabled it to be built to heights over 15 metres worldwide.
Ideal for railway tunnels and bridges – Keystone’s simple, dry build construction enables it to handle the most challenging site design and allows railways to remain open while a structure is being built, minimising delay time.
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