When all the wideslab units are in place and lined up, the joints between the units are to be grouted with either a 3:1 sand / cement mix or C30 concrete with 10mm aggregate. Hollowcore - Teesside ...
There are two strategies to lower cement’s carbon footprint: Cement Replacement: Swapping out cement, the adhesive that binds pebbles and sand to form ... and clay and mixing OPC with aggregate ...