As the name implies, this is a coarse combination of washed river sand and 10mm Blue Metal. ‘Blue Metal’ is crushed basalt, screened to a variety of sizes. When combined with cement, sand and metal mix makes for sturdy, solid uses, like concreting post holes, or as a builder’s mix used in retaining wall construction, foundations, driveways and general concreting. With this as a concrete mix the finer river sand fills the gaps between the blue metal pieces and the cement fills the gaps in the sand, making for a solid combination.
For a stronger, better concrete mix again, we recommend mixing P. Course Sand with 20mm Blue Metal to your own preferred concrete ratio.
Call us at Turtle for tips, information and service, and to find the right concrete blend for your landscaping or building project:
Turtle Rouse Hill Ph: 02 9629 2299
Turtle South Windsor Ph: 02 4574 3299