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csr concrete blocks

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2.0 Benefits

The many benefits of using Hebel PowerBlocks include:

Solid and strong:

Hebel PowerBlocks are made from Autoclaved Aerated Concrete (AAC), a strong, solid masonry building material with the advantage of being 25% the weight of conventional concrete.

Acoustic Performance:

Significantly reduced sound transmission from room-to-room.

Thermal Resistance:

Unique thermal properties result in a more stable inside temperature, reducing the energy
required to heat and cool your home, thereby reducing energy bills.

Environmentally friendly:

73% less embodied energy and 61% less greenhouse gas emissions than comparative masonry products*.

*Source: LCA Report GECA 2006

Fire Protection:

Non-combustible blocks with frameless construction deliver superior fire resistance. Hebel PowerBlock systems also allow you to build right up to your boundary line.

Pest resistance:

Not a food source for termites or vermin and no cavity construction eliminates the chance of harbouring pests.

Design Freedom:

Hebel PowerBlock Wall Systems provide absolute freedom to design and build your ultimate dream home – without compromise.

Technical Support:

Competent technical support through Hebel distributors.

Energy Efficiency

The unique combination of thermal resistance and thermal mass make building with Hebel a smart choice for meeting Australia’s stringent building regulations.

The thermal performance of a building depends on a number of factors such as orientation and size and aspect of windows. The R-Value of walls and floors can significantly affect the energy-rating outcome of dwellings. A 250mm Hebel PowerBlock has 3 times the R-Value of a cavity brick wall (BCA Vol. 2 Figure 3.12.1.3). The use of Hebel in walls and floors will provide increased thermal performance that can allow more flexibility with other design aspects of a building.

The thermal efficiency of Hebel systems will also reduce the reliance on heating and cooling appliances. The combined effects of running a heater less in winter and fans or air conditioning less in summer can have a big impact on energy costs and the environment.

Single Skin Construction

The AAC masonry constructed from Hebel PowerBlock products is called “Plain Masonry” and the blocks are masonry units referred to as a “Solid Unit”. The type of solid unit is “Autoclaved aerated concrete masonry unit” complying with AS/NZS 4455 – Masonry Units and Segment Pavers.

The larger face dimension and being a single skin, Hebel PowerBlock walls are erected quickly when compared to double brick construction.

Image 2.1:  Hebel PowerBlock home

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3.0 Energy Efficiency

Table 3.1 shows a number of different external wall configurations and identifies which satisfy the BCA requirement for Climate Zones 1 to 8. Table 3.2 lists the component R-Values used as a basis for Table 3.1. For more information on Hebel and energy efficiency refer to Section 3 and Appendix C and D of the Hebel Technical Manual.

Table 3.1:  BCA Energy Efficiency Compliance
Wall Configuration Satisfies BCA Requirements
Climate Zone: 1* 2* 3* 4 5 6 7 8
Class 1 & Class 10a Minimum R-Value: 1.4 1.4 1.4 2.2 1.9 2.2 2.4 3.3
1. 250mm Block Only Y Y Y N Y N N N
2. 250mm Block + 25mm Cavity Y Y Y Y Y Y N N
3. 250mm Block + 25mm Cavity + Sarking Y Y Y Y Y Y Y N
4. 250mm Block + 25mm Cavity + 75mm PowerPane Y Y Y Y Y Y Y N
5. 250mm Block + 40mm Cavity + R1.0 Insulation Y Y Y Y Y Y Y N
6. 250mm Block + 25mm Cavity + Double Sided RFL + 25mm Cavity Y Y Y Y Y Y Y Y
7. 250mm Block + 90mm Cavity + R2.0 Insulation Y Y Y Y Y Y Y Y

*Note: For elevated ground floor slabs an R-Value of 1.9 is required

Table 3.2:  Wall Element R-Value
System Number Construction Overall Thickness R-Value Rw Rw+Ctr
401 8mm Render in Texture Coat and Paint250mm Hebel PowerBlock 10mm Gyprock 268 mm 2.1 48 43
402 8mm Render in Texture Coat and Paint250mm Hebel PowerBlock 28mm furring channels @600mm centres 10mm Gyprock 296mm 2.3 51 43
403 8mm Render in Texture Coat and Paint250mm Hebel PowerBlock 28mm furring channels @600mm centres Non reflective (normal sarking) 10mm Gyprock 296mm 2.3 51 43
404 8mm Render in Texture Coat and Paint250mm Hebel PowerBlock 28mm furring channels @600mm centres Reflective foil 10mm Gyprock 296mm 2.6 51 43
405 8mm Render in Texture Coat and Paint250mm Hebel PowerBlock 28mm furring channels @600mm centres with 50mm 11kg – Bradford Glasswool Non reflective (sarking) 10mm Gyprock 296mm 3.1 53 44
406 8mm Render in Texture Coat and Paint250mm Hebel PowerBlock 8mm Render in Texture Coat and Paint 216mm 2.1 48 43

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5.0 Acoustic

Table 5.1 provides acoustic performance levels for PowerBlock walls. For alternatives and composite wall construction, Table 3.2 are acoustic performance for PowerBlock systems.

Table 5.1:  Acoustic Performance

PowerBlock Thickness Rw Rw+ Ctr
100 38 35
150 42 40
250 45 42

Values for PowerBlock only, no linings.

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8.0 System Components

Products

Hebel stocks many of the products and materials required to construct your Hebel home.

Product Description Product Description
  Hebel Thermoblocks

50mm – 300mm (25mm
increments)

Hebel Adhesive
20 kg bag

Used for gluing
the blocks together
at vertical and
horizontal joints

 

Sill blocks

600x200x50mm
thick or 100mm
thick, 30º slope

 

PowerFloor Panels

1800mm x 600mm x 75mm

Hebel Mortar 20 kg bag

Used as thick bed
mortar base to
provide a level
base for the
first course

  Custom PowerFloor
Panels

150mm – 250mm x 600mm
by up to 6m

Hebel Lintels

To suit openings
up to 5m

Hebel HighBuild
render 20kg bag

Used as a preparation
coat to level surface
providing an even
true surface

 

Stair treads

300mm x 175mm x 1m or 1.2m

Control joint tie

Used at every
third course in
control joints

Hebel Patch
10kg bag

Used to prepare
minor chips or
damage to blocks

 

Sliding joint tie

Fixed to RHS/SHS
column every
second course

 

Corrosion Protection Paint

To coat exposed
reinforcement during cutting

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10.0 Tools & Equipment for Construction

Hebel PowerBlocks can be laid using construction tools/equipment.

String Line – A string line is required to accurately set out and lay Hebel PowerBlock Walls.

Brick/Blocklaying Profiles – used to gauge the block course are being laid level.

Mixing Bucket – a minimum 20 litre bucket is required for mixing Hebel Mortar, Hebel Adhesive and Hebel HighBuild render.

Electric Drill – an electric drill is required to mix the Hebel Mortar, Hebel Adhesive and Hebel HighBuild render. It is also used to drill clearance holes in the blocks so they can be placed over the tied down rods where required.

Stirrer – fitted to the electric drill, the stirrer is used to mix the Hebel Mortar, Hebel Adhesive and Hebel HighBuild render inside the mixing bucket.

Notched Trowel – the notched trowel is used to apply the Hebel Adhesive to the Hebel surfaces. The width of the trowel must match the block thickness to ensure the adhesive is applied with full and even coverage.

Rubber Mallet – a rubber mallet is required to ‘tap’ the Hebel PowerBlocks onto the adhesive and into place.

Spirit Level – required to install the blocks level and plumb.

Hand Saw – a Hebel handsaw can be used to cut Hebel PowerBlocks to length and height.

Powered Bandsaw – a bandsaw is ideal for cutting Hebel PowerBlocks. (perfect when there are many site cuts to be performed).

Hebel Square – a purpose built square is available for use when marking and cutting Hebel PowerBlocks.

Steel, Plastic and Timber Trowels – these trowels may be required for the installation of the Highbuild render and texture coatings.

Sanding Float – used to even out inconsistencies in the Hebel PowerBlock Wall in preparation for render/texture coats.

Hebel Hand Router – may be used to chase services into solid Hebel walls.

Circular Saw – (fitted with a diamond blade) may be used to chase services into solid Hebel walls.

Electric Router – may be used to chase services into solid Hebel walls.

Crane – may be required to lift large Hebel Lintels and Hebel custom floor panels.

Lifting Grabs – required for use in conjunction with crane for lifting Hebel lintels and custom floor panels.

Scaffold – Scaffold is required when building block walls. The amount of scaffold depends on the height of the walls.

Sealant Gun – required to fill the control joints in the Hebel PowerBlock Walls.

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