Aircrete Flashcards
Aircrete is also known as?
Autoclaved aerated concrete (low-density Masonry Bricks)
Aircrete is a porous material, this means?
It contains air
The porosity content in Aircrete can be up to what %?
80%
In the UK Aircrete is most useful for?
Thermal insulation
Aircrete was initially developed in?
Scandinavia (Sweden) in 1924 and first used in the late 1950s as an alternative to building with timber.
What is used to manufacture aircrete?
Produced by mixing cementitious materials (cement and/or pulverised fuel ash (PFA)), lime, sand, water and aluminium oxide powder
As a material, Aircrete is classed as?
Non combustible
Low density aircrete has a density of about?
350 kg/m3 - and ranges to about 800kg/m3
What is used as a cement replacement to manufacture aicrete?
Pulverised fuel ash (PFA)
Low density aircrete typically has a compressive strength of?
3 N/mm2
What is the final process of Aircrete?
The final process involves autoclaving typically for approximately 10 hours at high temperature and pressure
What percentage of porosity is Aicrete?
Up to 80% porosity for Low-Density Aircrete
How much Aicrete is produced annually?
Currently, over 30 million m3 of Aircrete (of different densities as described above) is produced annually. Aircrete block sales account for approximately 3 million m3 per annum - a third of all concrete blocks used in the UK
