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AKU Calcium Silicate Products

Excellent Acoustic Performance
High Load-Bearing Capacity
More Living Space
Good Thermal Mass Properties
Acoustics
Acoustics

Acoustics

I want peace and quiet in my home.

PORFIX AKU sand-lime products excel in their top-notch acoustic properties. Their special composition, high-pressure molding, and subsequent curing in an autoclave give them a high density that effectively absorbs sound waves and creates an effective noise barrier. When you use PORFIX AKU, you significantly reduce both external and internal noise and ensure peace and privacy. PORFIX AKU is the ideal solution for anyone seeking reliable acoustic insulation while also requiring structural strength and stability.

Room of the noise source Required Rw (dB) Aerated concrete Rw (dB) Lime-sand Rw (dB)
Single-family house / apartment building 42.00 × 42.00 51.00
Apartment building 53.00 × × 59.60
52.00 × × 56.80
Office and administrative buildings 37.00 × 39.00 51.00
45.00 × 48.00 53.20
50.00 × 51.00 56.80
Hospitals and healthcare facilities 47.00 × 50.00 55.10
Schools and educational institutions 47.00 × 50.00 55.10
47.00 × 50.00 55.10
52.00 × × 59.60
Temporary accommodation facilities 47.00 × 50.00 55.10
45.00 × 48.00 53.20
Load-bearing capacity
Load-bearing capacity

Load-bearing capacity

I’m looking for strong and stable masonry.

We manufacture PORFIX AKU products from natural raw materials—sand, lime, and water—which undergo a process of pressing and autoclave curing. They are therefore highly compressive, durable, and have excellent mechanical resistance. The uniform composition minimizes shrinkage and contributes to the long-term stability of the masonry. The result is a reliable load-bearing structure resistant to loads even under demanding conditions.

Space
Space

Space

I want more space and a reasonable price.

The strength and stability of PORFIX AKU sand-lime products allow you to build slender (narrow) load-bearing walls. This increases usable space while reducing the consumption of building materials. Slenderer structures mean more space for your family and lower costs for the building shell.

 

Space

A - Perimeter masonry

  • AKU
  • POR
  • 248
  • 199
  • 175
  • 150

B - Internal load-bearing masonry

  • AKU
  • POR
  • 248
  • 199
  • 175
  • 150

C - Partition walls

  • AKU
  • POR
  • 150
  • 125

USABLE FLOOR AREA (m²) on a foundation slab without wall overhang, 8,000 × 12,000 mm =

0
Accumulation
Accumulation

Accumulation

I want a comfortable indoor climate and low heating costs.

Homebuilders also appreciate the high heat storage capacity. Thanks to their high specific heat capacity, sand-lime products help stabilize indoor temperatures and improve a building’s energy efficiency. PORFIX AKU is the ideal solution for buildings that require massive thermal mass walls (especially in combination with lightweight structures), such as wood-frame buildings. If you build the wall near a heat source, you’ll ensure a long-term stable temperature in your home.

General advantages

A - Perimeter masonry

  • Calcium silicate blocks insulated with polystyrene
  • Calcium silicate masonry insulated with mineral wool
  • Aerated concrete without insulation
  • Aerated concrete insulated with polystyrene
  • Aerated concrete insulated with mineral wool

Calcium silicate blocks insulated with polystyrene

  • exceptionally energy-efficient construction with adequate insulation thickness
  • high load-bearing capacity
  • more usable living space

Calcium silicate masonry insulated with mineral wool

  • exceptionally energy-efficient construction with adequate insulation thickness
  • high load-bearing capacity
  • excellent vapour diffusion properties
  • more usable living space

Aerated concrete without insulation

  • easy material processing
  • faster construction
  • excellent vapour diffusion properties
  • easy installation of utilities

Aerated concrete insulated with polystyrene

  • with sufficient insulation thickness, an exceptionally energy-efficient building
  • easy material processing
  • easy installation of utilities

Aerated concrete insulated with mineral wool

  • exceptionally energy-efficient construction with adequate insulation thickness
  • excellent vapour diffusion properties
  • easy to work with
  • easy routing and installation of services

B - Internal load-bearing masonry

  • Calcium silicate blocks
  • Aerated concrete

Calcium silicate blocks

  • high load-bearing capacity
  • excellent acoustic performance
  • more usable living space
  • good thermal mass properties

Aerated concrete

  • easy workability
  • easy installation of utilities

C - Partition walls

  • Aerated concrete
  • Aerated concrete

Aerated concrete

  • excellent acoustic performance
  • good thermal mass properties

Aerated concrete

  • easy workability
  • easy installation of utilities
AKU product catalogue
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