Some people refer to these as ‘spiderweb’ cracks but the technical name is ‘mapping cracks’.
That’s because they can look like a street map.
Generally they are much more obvious after rain as water seeps doown into the cracks.
These cracks are typically only 2-3mm deep and are as a result of the surface concrete [read more…]
Photo thanks to www.civilblog.org
One simple thing to improve the quality of concrete is to use a spray applied curing membrane. . . it’s a pity that this techniques doesn’t seem to be used much in Australian domestic building.
Purpose of Membrane
These membranes main purpose is to prevent the loss of moisture during [read more…]
I have previously talked about the importance of Well Designed Concrete Paving so here is a product that will help you achieve that.
It’s called the Connelly Key Joint
A galvanised steel strip forms a keyway in the vertical face of the joint which means that reinforcement isn’t needed across the joint in footpath [read more…]
A ‘Dirty Secret’ of the Construction Industry is; adding of extra water to concrete mixes.
The ready mix concrete suppliers carefully design mixes with appropriate water cement ratios, which are loaded onto the delivery truck by computer controlled batching systems. . . . . . . All this effort on getting the mix right goes [read more…]
You might have heard of Liquid Limestone as an alternative paving material…….But what is it?
Really its just a different type of concrete.
The differences between Concrete and Liquid limestone are:
Instead of standard Portland ‘Grey’ Cement it uses White Cement. It uses crushed limestone rather than other types of rock gravel and sand. [read more…]