Mar 04, 2017 · Mix ratio’s needed for garden ornament moulds are also a mix, but the sand content is higher i.e. 3 x sharp sand, 2 x 10mm pebble or chippings and 1 x cement. Add water to bind ingredients together to obtain a wet mix. The amount of water that you need to add will vary, dependant on the moisture content of the sand.What are the dimensions of the path, slab or post holes you are building?Aug 13, 2019 · 2. Determine the width you are able to place and screed off in a single pass. Normally, the straight-edge for "screeding", or levelling off the plastic concrete, should be less than 16 feet (4.9 m), unless you have lots of people to "pull" the excess concrete from in front as you progress down the length of the placement. 12 feet (3.7 m) is a ...Aug 23, 2016 · August 23, 2016. The world of concrete blocks is huge. You’ve got your smooth faced, your split faced, your scored blocks, your fluted blocks, your shot blast blocks and within all of those you’ve got double sided, single sided, corner blocks, chimney blocks, window blocks, and a whole bunch of others. It’s quite overwhelming really.