Low Density Cellular Concrete Made of Reftinskaya SDPP Fly Ash

Abstract:

There is experience of the production and use of low density autoclaved aerated concrete. It is shown that fly-ash from Reftinskaya State District Power Plant efficiently substitutes the quartz sand aerated concrete technology. Its use opens up additional opportunities for AAC with the density of 300-400 kg/m³. In order to optimize the structure and properties it has been suggested to introduce the gypsum aerated concrete additive into the autoclave in the amount of 3-5% by weight of the dry components. The introduction of gypsum ensures the creation of a uniform homogeneous structure, resulting in the increased strength properties and reduced drying shrinkage. The resulting aerated concrete has thermal conductivity of 0.075-0.100 W/m·K, it allows using and creating single-layer fencing structures without additional insulation. The low-density gas-ash concrete production allows extending the scope of cellular concrete application and increasing its competitive advantages over other walls and insulating materials.

• Periodical: Solid State Phenomena (Volume 265)
• Pages: 124-128
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.265.124
• Online since: September 2017
• Authors: Andrey Vishnevsky*, Fedor L. Kapustin
• Keywords: Autoclaved Aerated Concrete, Density, Fly Ash, Gypsum, Thermal Conductivity

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