3. Materials & Construction Materials In-Situ Concrete The design intent requires a difference in concrete mix between a harder and stronger front North facade, in contrast to a smoother and lighter rear South facing facade. To acheive this, a fly ash cement will partially replace standard cement. This cement is produced using the ash from the combustion process of coal. It produces a darker looking concrete. This together with a higher conrete mix will provide a darker and rougher concrete finish. The rear facade will have a lower aggregate mix, with cement which is partially replaced with Ground-granulated blast-furnace slag (GGBS). This slag is produced during the production process of Iron. GGBS will provide a paler looking concrete which would appear lighter with the addition of South facing sunlight.
Left: North facade, adopting a rougher and darker concrete mix Below: South facade, adopting a smoother and lighter concrete mix Bottom right: London Aquatics centre with a lighter concrete mix with the use of GGBS cement replacement.
CASE STUDY GGBS and carbon cements GGBS and FAFA lowlow carbon cements
Far right: Angel Building, London, uses a darker concrete mix with the addition of fly ash cement replacement.
PROJECT: Byron Street - Glasgow
STONE DESCRIPTION:
A Permian Sandstone from the Locharbriggs Quarry in Dumfries, Scotland, one of the oldest and largest and actively worked red sandstone q Scotland. Quarried since the 18th century, this pink to red medium grained sandstone is widely used across Scotland and England for walling and contemporary cladding and masonry styles. Extensive reserves are readily available.
The impressive list of reference sites for Locharbriggs red sandstone dates back to the 1700’s and includes sites across Scotland and England landmark buildings in Edinburgh and Glasgow. Aquatics Centre, London Aquatics Centre,Angel Building, Angel Building, London Zaha Hadid Architects / ARUP /AKT Zaha Hadid Architects / ARUPAHMMAHMM /AKT
Locharbriggs Sandstone A local red sandstone which comes from Locharbriggs quarry, located in Dumfries, Scotland. (Roughly 70 miles away from Glasgow). The sandstone has been quarried at Locharbriggs since the 18th Century and was a frequently used building material throughout the civic boom of the industrial revolution. Many of these buildings remain intact in present day Glasgow. The stone is used for facade cladding throughout the design, providing a local material with local History and heritage.
34 | Technical Report
GGBS is pale/white GGBS is pale/white PROJECT SUMMARY:
Fly Ash dark grey grey FlyisAsh is dark (30% inGovan diving A new affordable housing project at Greater andboards) Glasgow Harbour, Whiteinch. (34%) Using(34%) natural sandstone cladding materials to enhance (30% in diving boards)
quality and character external space. Left: Sandstone Cladding usedofinthe current design. 100mm Ashlar cladding to front facade. 50mm Sandstone Skirting to rear facade.
THE BUILD SOLUTION:
Below: Byron street, Glasgow. High use of sandstone throughout theresidential City of Glasgow. These apartments needed to be striking in appearance in order to attract residents; they also needed to meet the latest legislation
These residential apartments needed to be striking in appearance in order to attract residents; they also needed to meet the latest legislation includes the buildings durability - with all construction materials contributing to the buildings overall thermal performance. Bottom right: Sandstone, stone texture with a fiery red colour
Using Locharbriggs red sandstone 100 mm cladding on the outer façade, designers have establish sound relationships between the old buildi new development project, placing a unique stamp on this residential property in terms of character and style.
Philip Win | 4236190
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