Self consolidating grout
This kind of air content (unlike that in aerated concrete) is not desired and weakens the concrete if left.However it is laborious and takes time to remove by vibration, and improper or inadequate vibration can lead to undetected problems later.
When aggregate is mixed together with dry Portland cement and water, the mixture forms a fluid slurry that is easily poured and molded into shape.
Once poured, SCC is usually similar to standard concrete in terms of its setting and curing time (gaining strength), and strength.
SCC does not use a high proportion of water to become fluid - in fact SCC may contain less water than standard concretes.
Grout is required to be placed at a slump of 8 to 11 inches – a very wet mix – to flow into the grout space.
Excess water in the mix does not adversely affect grout strength as it is absorbed by surrounding masonry.