For optimal results when working with masonry blocks, it is crucial to ensure that the blocks are dry before laying them in the wall. This practice helps to minimize subsequent shrinkage. Additionally, keeping mortar off the face of the blocks and cleaning off any droppings as work progresses, before the mortar sets, is essential. Whenever possible, avoid cleaning down with acid to maintain the integrity of the blocks.
When it comes to color consistency, it is important to order enough product to complete the entire project at once to avoid batch variations. Concrete masonry blocks behave differently from clay bricks in terms of moisture movement and temperature changes. To prevent cracks in walls, assuming sound foundations are provided, the correct use of control joints, bond beams, and/or joint reinforcement is necessary. Guidelines for these elements can be found in Australian Standard 3700-2011.
For useful estimating data, 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 0.013m3 of concrete per linear meter of beam. For core filling, allow 0.65m3 of concrete per 100 blocks for 150mm 'H' blocks, 0.8m3 for 200mm blocks, 0.84m3 for 200mm 'H' blocks, 1.1m3 for 300mm blocks, and 1.32m3 for 300mm 'H' blocks.
Features
- Ensure blocks are dry before use to minimize shrinkage.
- Order sufficient product to avoid batch variations.
- Follow Australian Standard 3700-2011 for control joints and reinforcement.
