by welsh brickie »
Wed Jan 11, 2012 12:03 pm
Its my understanding that the cement your laying is a 4:1 mix and it keeps cracking?
The mix you require is 6 sharp sand 1 cement and 1 gravel either 6mm or 10mm will do.Its the gravel that gives the concrete its strength, the thickness also needs to be a minimum of 100mm .