Archetech Issue 60 2022 | Page 10

SCHÖCK

NEW FROM SCHÖCK

A THERMALLY INSULATING CONCRETE WALL CONNECTION
Around 40 % of all thermal bridges in a building are caused by walls and supports , resulting in some 10 % of heating energy losses . With reinforced concrete construction , minimising linear thermal bridges in these areas has undoubtedly been a perennial problem . However , Schöck , the market leaders in the development of structural thermal breaks for balconies and other cantilever constructions , has now applied its Isokorb expertise to reinforced concrete wall and support – resulting in a dedicated new solution – the Sconnex type W . It offers outstanding insulation performance , combined with an exceptional load-bearing capacity and the first major project to incorporate the new product is the Aylesbury Estate regeneration in South London .
EXTENSIVE REGENERATION REQUIRED
The estate , originally completed in 1977 , was planned to house over 10,000 residents . By the 1990s , it was one of the most deprived areas in the country and although there have been remedial developments since , the regeneration has now escalated . Today Aylesbury Estate is one of the most significant urban renewal projects in London . Due for completion in 2036 the overall masterplan envisages 3500 spacious new homes , with Aylesbury Square the civic heart of the regeneration . This public square consists of two separate blocks , from four to fifteen storeys . The North Building provides 122 new homes , community facility and a public library ; and the South Building a community health care facility and an Early Years centre . The construction of the two blocks is of reinforced concrete . So the wall connection to the floor , or floor slab , can be a serious source of linear thermal bridges , resulting in serious energy loss , a high risk of condensation and the formation of mould growth . This is likely to cause possible structural damage and even become a health risk to occupants . There is a sustainability strategy in place for Aylesbury Square , to ‘ create a place which meets or exceeds the highest quality standards for new development in London .’ This to be achieved by delivering highly energy efficient buildings as part of a London Plan policy compliant strategy . The new Sconnex type W thermally insulating connection for reinforced concrete walls is unique in its ability to help meet those criteria .
SCONNEX IS A UNIQUE SOLUTION
The new Schöck product minimises the thermal bridge between the exterior wall insulation and the insulation above the floor slab , increasing the energy efficiency of the entire building . Heating costs are lower , a pleasant room climate is created and the linear thermal transmittance ( Psi ) of the connected reinforced concrete wall is reduced by up to 90 percent . This outstanding insulation performance is combined with an excellent load-bearing capacity ,

“ Today Aylesbury Estate is one of the most significant urban renewal projects in London .

which transmits very high pressure , tensile and shear forces in the longitudinal and transverse direction . Made possible by the use of a pressure buffer consisting of ultra-high performance fibre reinforced concrete , which achieves compressive strength in excess of 175 N / mm2 – but with extremely good flexural strength as well . There is also a significant cost reduction involved when compared to installing insulation beneath the floor slab .
For further information on the new Sconnex type W product contact Schöck on 01865 290 890 ; or download the brochure at www . schoeck . com
ARCHETECH - PAGE 10