2hrs.
Description
For optimal results when working with
masonry blocks
, it is crucial to follow best practices.
Do not wet blocks
before laying them in the wall, as they should be dry to minimize subsequent shrinkage. When it comes to
cleaning concrete masonry
, ensure that mortar is kept off the face of the blocks. Clean off any droppings as work progresses and before the mortar sets. Whenever possible, avoid cleaning down with acid.
Attention to detail is essential when it comes to
color
. Make sure to order enough product to complete the project at the same time to avoid batch variations.
Control of shrinkage cracking
is another important consideration. Concrete masonry blocks behave differently from clay bricks in terms of moisture movement and temperature changes. Assuming sound foundations are provided, cracks in walls can be avoided by the correct use of control joints, bond beams, and/or joint reinforcement. The rules for using these elements are contained in Australian Standard 3700-2011.
Useful estimating data
is also available for your convenience. Blocks with a 390x190mm face equate to 12.5 units per square meter and 2.5 units per linear meter. To fill 200mm bond beams, allow 0.013m
3
of concrete per linear meter of beam. To core fill 150mm ‘H’ blocks, allow 0.65m
3
of concrete per 100 blocks. To core fill 200mm blocks, allow 0.8m
3
of concrete per 100 blocks. To core fill 200mm ‘H’ blocks, allow 0.84m
3
of concrete per 100 blocks. To core fill 300mm blocks, allow 1.1m
3
of concrete per 100 blocks.
Features
Ensure blocks are dry before use to minimize shrinkage.
Order sufficient quantities to avoid batch variations.
Follow Australian Standard 3700-2011 for control joints and reinforcement.
