Innovative Concrete Measurement Reduces Carbon Footprint At HS2

Concrete is bad. However, concrete is essential. It is bad since its component parts are rather damaging for the environment to produce. For example, a typical concrete mix involves between a quarter and a sixth in volume of cement, and for every tonne of cement that is produced, 900 kg of CO2 are emitted! That amounts to between 80 and 90% of the emissions associated with an average concrete mix.

However, efforts are being taken to reduce the amount of concrete in use, and in particular the amount of concrete being wasted. For example, in one recent trial, HS2 has been using a groundbreaking measuring system to more closely monitor the consistency of concrete within a cement truck. Traditionally this would be done external to the vehicle using a slump test and through temperature testing. However, by testing the consistency within the vehicle, for every delivery there is a reduction of waste. Furthermore, by monitoring the concrete in the vehicles, concrete loads