Global Economic Forum, Bloemfontein

29-31 October 2013

AUTOCLAVED AERATED CONCRETE (ACC)Introducing

Presented byDOUGLAS LUND

BENCHMARK DEVELOPMENT & CONSTRUCTION, SOUTH AFRICA

AAC was first developed in Sweden and has been used extensively as a building material in Europe for over 70

years.

In the last 20 years there has been a marked increase in the use of AAC throughout the world and plants now exist in the

Europe, USA, China, Russia, India, Australia and New Zealand to name a few.

Advantages of ACC

AAC was invented before its time, before people really understood the critical need for

such a material used in buildings.

weighs roughly 20% of the weight of concrete

thermal efficiency

insect and mildew resistant

extremely fire resistant

minimal environmental

impact

excellent insulation

against sound

helps to create a comfortable

living environment

speed of construction –

fast to build with

made to precise dimensions

eliminates the need for

additional insulation

water-resistant easy to install using simple hand tools

Precast AAC can be formed into blocks, lintels, wall panels, floor panels, and roof panels, and

can be used with a variety of finishes.

AAC is a product which is comprised of a mixture containing cement, lime, p.f.a or sand, gypsum, water,

steam and aluminium powder.

Ingredients

Production process

Production process

Production process

Production process

Production process

Production process

Production process

Production process

Production process

Production process

Production process

Production process

Production process

Production process

Production process

Production process

Construction with AAC

Construction with AAC

Construction with AAC

Environmental Considerations & Sustainability

Final Products

VINYL WINDOWS (UPVC)Introducing

Presented byDOUGLAS LUND

BENCHMARK DEVELOPMENT & CONSTRUCTION, SOUTH AFRICA

Vinyl (uPVC) windows have been widely favoured throughout Europe for the last 20 years with the use of double glazing. Un-plasticized

Polyvinyl Chloride (uPVC) is a rigid plastic which has many benefits as a construction material. uPVC windows have an estimated lifespan of

35 years.

Advantages of uPVC windows

No air and no sound is able to

penetrate

Very high energy efficiency and will lead to a decreased

carbon footprint

uPVC is an excellent insulator

Cold doesn’t penetrate the frame – no

conductance

Minimum solar heat gain – cool

inside during summer

Vast array of durable long-

lasting colours

Aesthetically superior

Fold away doors

• Maintenance is minimal, especially compared to wood or aluminium frames• Resistant to corrosion by salt or acids such as nitric acid • uPVC not attract termites like wooden frames, and is thus not subject to

insect damage• uPVC will not warp, chip, or splinter unlike metal or wood• It is not susceptible to rusting• It cannot be pried open like wood frames, and thus is much more secure • UV protective• uPVC is extremely affordable and cost-efficient for producer and consumer

alike

Global Economic Forum, Bloemfontein

29 – 31 October 2013

Thank you!