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The Concrete Masonry Assoc of Australia publishes manuals and documents relating to concrete blocks and concrete masonry walling - The Concrete Masonry Handbook is suitable for students and MA55 Design and Construction of Concrete Masonry Buildings and is provided to assist engineers, architects and builders with the design and construction of concrete masonry walls.

The document is PDF file provided for easy viewing on any computer. You may click on the image to view the manaual from where can then download a copy to your local computer.

Disclaimer: Since the information provided in this manual is intended for general guidance only and in no way replaces the service of professional consultants on particular projects, no liability can be accepted by the Association for its use.

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Masonry Block Product Guide

Block & Brick Estimator

Full Height

Half Height

Standard Brick

Quick Brick

Masonry unit face size (L x H mm)

390 x 190

390 x 90

230 x 76

230 x 162

No. Units per m2

12.5

25

50

25


Material Quantities for 1m3 of Mortar

  • For every 800 full height blocks (390 long x 190 high) or 64m2 of wall, approximately 1m3 of mortar mix is required, allowing for wastage.
  • There are 12.5 full blocks per square metre of wall surface area.

 

Grey Block

Designer / Decorative Block

M3

Mix in 1:1:6 proportions

Mix in 1:0.5:4.5 proportions

Cement

7 bags (40kg each)

Cement

Cement 8 bags (40kg each)

Lime

5 bags (20kg each)

Lime Designer Block®

Additive 8 litres

Sand

1.2m3

Sand

1.2m3

M4

Mix in 1:5 proportions

Mix in 1:4 proportions

Cement

9 bags (40kg each)

Cement

10 bags (40kg each)

Lime

3 bags (20kg each)

Lime Designer Block

® Additive 27 litres

Sand

1.2m3

Sand

1.2m3

Note: Use clean, sharp sand and allow 20% for bulking


Grout for Core Filling
The correct grout specification (mix design) is critical to achieving the structural design of a reinforced wall. The grout used to fill the cores of blockwork walls should be specified as follows:

  • Grout to comply with AS3700 Clause 10.7.
  • Characteristic Compressive Strength 20MPa.
  • Cement content not less than 300kg/M3
  • Round aggregate (if any) not more than 10mm.
  • Clean sand (1.2M3).
  • A pouring consistency which ensures that the cores are completely filled and the reinforcement completely surrounded without segregation of the constituents.

Control Joints

  • Because of temperature variations and the shrinkage in a concrete masonry wall after construction, it is necessary to provide control joints in blockwork at a max spacing of 6m and at points of potential cracking. E.g. Beside openings and at large steps in wall or footing.
  • Joint width is 10mm for panels up to 6000mm long.
  • Joint sealants should be applied towards the end of construction to minimise the effect of panel movement.

Core Fill Quantities

Block Type

1m3 Grout

15.01

230

15.48

210

20.01

150

20.48

125

30.01

90

30.48

69

40.40

50



1. Stock colours and textures Blocks are available in Smooth or Split Face finishes in nominal 100 or 200mm thicknesses. Part sizes are usually cut on site or manufactured dependent on the quantity ordered. A surcharge applies to orders less than set minimum quantities. The supply of raw materials can vary over time and as a consequence colour and finish variation can occur between product types and production batches.
2. Textures
Finishes including Honing, Polishing and Shot-blashing are produced on a “made to order” basis. Lead times apply as the product must be cured for four weeks to harden sufficiently before processing. Contact your nearest Lyndons store to confirm lead times and premiums on special texured finishes.
3. Strength
As stated in this website, all Masonry units suitable for core-filled reinforced retaining walls are made to a minimum grade strength of 15MPa, as per AS4456.4.
4. We reserve the right to change the details in this website page without notice.
All specifications are correct at time of printing.
6. For a full set of Terms and Conditions of Sales please contact your nearest Lyndons sales office.