By the end of the project Evans had won 30 orders to supply 5300 m3 or 13,750 tonnes with a total of 8600 units.
Throughout the project it was important that key personnel were involved in the process to ensure everything was kept on track, which included a two day trip to the East Midlands organised by EMDA, John Armitt, chairman of the Olympic Delivery Authority (ODA), who visited Evans Concrete.
One of the key elements of the tender process was to have sustainability and the environment front of mind. That’s why we implemented various processes to ensure as little impact as possible. This included:
- Recycled aggregate could be used in the construction of the temporary bridges
- Recycled concrete aggregate was processed at our factory
- Special concrete mix was developed – 20% of the main aggregate replaced with recycled concrete aggregate and 36% of the cement replaced with ground granulated blast furnace slag (GGBS)
- The combined effect of these two initiatives – 15% of the final product was made using recycled materials
- The 600 temporary bridge planks supplied weighed approx. 6000T – approximately 900T of this was from recycled material
As well as focusing on sustainability for the sourcing of materials and manufacturing, Evans also considered every element of the process:
- Generally transport goods by road
- With 600 units each weighing around 10 tonnes, explored alternative transportation methods to maximise transport carbon savings
- Determined that using mainly rail would maximise the carbon savings, even accounting for double handling of units
- The journey involved transporting the goods by road from Evans’ manufacturing facility in Somercotes, Derbyshire to the rail terminus at Toton – 34km, then 200km by rail to site in London
Using this combination of rail and road rather than just road, a CO2 saving of 26g per tonne per km was made. (Source ODA) and in total around 31,200 Kg of CO2 savings made.