BLOCK MASONRY (NATURAL) 300mm SERIES

BLOCK MASONRY (NATURAL) 300mm SERIES

HOW TO GET THE BEST RESULTS FROM BAINES MASONRY’S BLOCKS

DO NOT WET BLOCKS

Baines Masonry’s blocks should be dry when laid in the wall to minimise subsequent shrinkage.

CLEANING CONCRETE MASONRY

Keep mortar off the face of the blocks. Clean off droppings as work progresses and before mortar sets.

Cleaning down with acid should be avoided whenever possible.

A guide to cleaning concrete masonry is available at Baines Masonry or full technical details are available from the Concrete Masonry Association web site - www.cmaa.com.au

COLOUR

Care should be taken to order enough product to complete the project at the same time to avoid the possibility of batch variations.

CONTROL OF SHRINKAGE CRACKING

Concrete Masonry’s blocks behave differently to clay brick in regard to 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.

Rules for the use of these elements are contained in Australian Standard 3700-2011

USEFUL ESTIMATING DATA

Blocks with 390x190mm face = 12.5 units per square metre and 2.5 units per lineal metre.

To fill 200mm bond beams allow 0.013m3 of concrete per lineal metre of beam.

To core fill 150mm ‘H’ blocks allow 0.65m3 of concrete per 100 blocks.

To core fill 200mm blocks allow 0.8m3 of concrete per 100 blocks.

To core fill 200mm ‘H’ blocks allow 0.84m3 of concrete per 100 blocks.

To core fill 300mm blocks allow 1.1m3 of concrete per 100 blocks.

To core fill 300mm ‘H’ blocks allow 1.32m3 of concrete per 100 blocks.