Physical properties of low density aircrete products
1
School of Civil Engineering & Construction, Kingston University, London, UK
Publication date: 2011-12-01
Cement Wapno Beton (Special 2011 16) 66-69 (2011)
KEYWORDS
ABSTRACT
Currently in the UK, aircrete, also known as Autoclaved Aerated Concrete, masonry units are usually produced with a minimum declared compressive strength of 2.9 N/mm2 (measured to EN 772-1) and a minimum density of 400 kg/m3 . However, newly introduced European Standards allow the use of lower strength and with this it is possible to produce lower density products, such as low-density aircrete with a minimum declared compressive strength of 2.0 N/mm2 and a density of 350 kg/m3 . This paper provides details of an extensive investigation to assess key physical properties such as moisture properties, freeze/thaw resistance, thermal performance, combustibility and fl anking sound performance of low-density aicrete products. The results show that key physical properties of low-density aircrete were comparable to conventional aircrete products.
ACKNOWLEDGEMENTS
The authors would like to acknowledge the funding for the project provided by the Engineering and Physical Sciences Research Council (EPSRC) and the Industrial Collaborators, Autoclaved Aerated Concrete Product Association, H+H Celcon, HansonThermalite, Quinn-Group, Tarmac Topblock, Building Research Establishment, Catnic-Corus UK, National House-Building Council and the Offi ce of the Deputy Prime Minister.
REFERENCES (25)
2.
AAC (1978) CEB Manual of Design and Technology, The Construction Press, Lancaster, London, New York.
3.
British Standard Institution, BS EN 772: Part 1: 2000, Methods of Test for Masonry Unit – Part 1: Determination of Compressive Strength, London.
4.
British Standard Institution, BS EN 772: Part 11: 2000, Methods of Test for Masonry Unit – Part 11: Determination of Water Absorption of Aggregate Concrete, Manufactured Stone and Natural Stone Masonry Units due to Capillary Action and the Initial Rate of Water Absorption of Clay Masonry Units, London.
5.
British Standard Institution, BS EN 772: Part 10: 1999, Method of Test for Masonry Unit – Part 10: Determination of Moisture Content of Calcium Silicate and Autoclaved Aerated Concrete Units, London.
6.
British Standard Institution, BS EN 772: Part 13: 2000, Method of Test for Masonry Unit – Part 13: Determination of Net and Gross Dry Density of Masonry Units (Except for Natural Stone), London.
7.
British Standard Institution, BS EN 772: Part 16: 2000, Method of Test for Masonry Unit – Part 16: Determination of Dimensions, London.
8.
British Standard Institution, BS EN ISO 12572: 2001, Hygrothermal Performance of Building Materials and Products – Determination of Water Vapour Transmission Properties, London.
9.
British Standard Institution, BS EN 680: 1994, Determination of the Drying Shrinkage of Autoclaved Aerated Concrete, London.
10.
British Board of Agrement, MOAT 12: 1977, The Assessment of Precast Insulating Concrete Blocks for General Use in Building – Assessment of Freeze/thaw Resistance.
11.
British Standard Institution, BS EN 1745: 2002, Masonry and Masonry Products – Methods for Determining Design Thermal Values, London.
12.
British Standard Institution, BS EN 12664: 2001, Thermal Performance of Buildings – Determination of Thermal Resistance by Hot-Box Method Using Heat Flow Meter – Masonry, London.
13.
British Standard Institution, BS EN ISO 1182: 2002, Reaction to Fire Tests for Building Products Non-combustibility, London.
14.
British Standard Institution, BS EN ISO 1716: 2002, Reaction to Fire Tests for Building Products: Determination of the Heat of Combustion, London.
15.
British Standard Institution, BS EN 13501: Part 1: 2002. Fire Classifi - cation of Construction Products and Building Elements: Classifi cation Using Test Data from Reaction to Fire Tests. London.
17.
Egan J. (1998) Rethinking Construction, Report of the Construction Task force on the Scope for Improving Quality and Effi ciency in UK Construction. London.
18.
H + H Celcon Ltd. (2003) Celcon House, Ightham, Sevenoaks, Kent, TN15 9HZ. Available on www.celcon.co.uk/downloads/RIBA%20 CPD.pdf.
19.
Isu, N and Mitsuda, T. (1992) Infl uence of Quartz Particles Size on the Chemical and Mechanical Properties of Autoclaved Lightweight Concrete, Advances in Autoclaved Aerated Concrete, Wittmann (ed.), Balkema, Rotterdam. ISBN 90 5410 086 9.
20.
Mitsuda, T. and Kiribayashi, T. (1992) Infl uence of Hydrothermal Processing on the Properties of Autoclaved Aerated Concrete, Advances in Autoclaved Aerated Concrete, Wittmann (ed.), Balkema, Rotterdam. ISBN 90 5410 086 9.
21.
Pospisil, F (1992) Unit Weight Reduction of Fly Ash Aerated Concrete, Advances in Autoclaved Aerated Concrete, Wittmann (ed.), Balkema, Rotterdam. ISBN 90 5410 086 9.
22.
The Building Regulations. (2000) Approved Document Part L1: Conservation of Fuel and Power 2010 ed, The Stationery Offi ce, London.
23.
The Building Regulations. (2000) Approved Document Part J: Conservation of Fuel and Power 2010 ed, The Stationery Offi ce, London.
24.
The Building Regulations (2000), Approved Document E: Resistance to the Passage of Sound 2003 ed, The Stationery Offi ce, London.
25.
Zhou, W., Feng, N. and Yan, G. (1992) Fracture Energy Experiments of AAC and its Fractal Analysis, Advances in Autoclaved Aerated Concrete, Wittmann (ed.), Balkema, Rotterdam. ISBN 90 5410 086 9.
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