Browse Forums Paving & Concreting Re: Base for concreting on 2Nov 19, 2007 7:32 pm "Cracker dust" or "crusher dust" is the go around my area - as advised by all the concreters & bobcat drivers I've used for various work over the years.
This "cracker dust" is actually recycled concrete from a local recycling plant. It goes down easy, can be raked, then wacker-packed, and if you wet it down, it goes crusty & hard, providing a great base. I put 450mm of it down in one area, under a 5 x 8m slab (dug out heaps of sloppy, wet clay) and packed it well between truckloads, and in 8 years that slab never cracked. It's also providing a 150mm (and deeper in some spots) base for my old driveway (around 120sq m) and it's only ever copped 1 hairline crack across it, which started at a 270 degree brick corner - an area prone to break. Re: Base for concreting on 3Nov 19, 2007 11:06 pm we use yellow brickies sand here. my mate has a concreting company and they use it too. we use it for paving, house slabs, footpaths etc It is leveled and compacted before the concrete is poured.
we use crushed and compacted limestone for road base as well. typical sandgropers using sand ![]() Re: Base for concreting on 4Nov 19, 2007 11:09 pm I read a bit on that cracker dust nut. it is supposed to be great stuff. It also makes a better use of building waste (even though a shinto load of energy is used to re-manufacture it ![]() That could be a piece of timber that was mistakenly attached to the formwork. Any reduction in concrete section is a concern. I would get it checked by a qualified… 3 17447 In regards watering I assume you intend for your front and back yards to be fully reticulated? Check with your provider to see if they have an allowance for new gardens -… 1 23262 ![]() Sorry, It was not me. This is a new house after 2 years that I am seeing it. I may have use the same subject title. So whatcan I do? 2 218 |