There is a lot of press coverage regarding the use of Reinforced Autoclave Aerated Concrete (RAAC) and the dangers it now poses to Schools and hospitals throughout the UK.
Autoclaved Aerated Concrete (RAAC) are not so widely used in the UK as they are in Europe.
The panels are made of autoclaved aerated concrete (commonly called Aerated concrete), which is used to reinforce structural precast units. This type of concrete (really an aerated silica product) provides scant protection against the corrosion of embedded metal. To stop corrosion, a bituminous or cement latex coating is applied as protection. It is usually used for walls, floor, and roof planks.
Pre-1980 RAAC roof planks are now exceeding their service life; there have been some instances of failures, and a safety alert has been issued by (CROSS)
Further information is available in:
- IP 10/96 – Autoclaved Aerated (RAAC) concrete planks designed before 1980, BRE, 1996.
- IP 7/02 – autoclaved aerated concrete planks – test results, assessment, and design, BRE, 2002.
- BS EN 12602: 2016 Prefabricated reinforced components of autoclaved aerated concrete
- Twelfth Report of SCOSS, Structural-Safety, 1999.
School Closures due to unsafe buildings constructed with Autoclave Aerated Concrete (RAAC)
The Government is now closing many Schools where this type of concrete has been used, meaning that these buildings will have to be redeveloped.
M&M Demolition provides Demolition services across the UK and is ready to step in and carry out demolition work where required at short notice.
03303 411703 | tenders@mmdemolition.co.uk
https://educationhub.blog.gov.uk/2023/08/31/new-guidance-on-raac-in-education-settings/
http://www.demolitionnews.com/2023/06/19/demolition-not-so-evil-now-is-it/
For more Demolition insights go to https://www.mmdemolition.co.uk/insights/