About the article
V.V. Belov, T.R. Barkaya, P.V. Kulyaev
The work considers low-energy technology of non-autoclave porous concrete (NAPC) based on fuel ash. After closing with water and mixing in a conventional mixer, the feed mixture is poured into molds or formwork, where it swells and then solidifies under normal conditions or with little heat treatment. It is indicated that the use of NAPC with the same average density as conventional lightweight concrete on firing aggregates for reinforced load-bearing structures can be justified by close values of total porosity and associated elastic and deformative properties, as well as similar working conditions of reinforcement in these products. It is concluded that, in comparison with gas–reinforced concrete, NAPC favorably differ in greater stability of properties during manufacture, lower consumption of gas-forming additives, and in comparison with conventional light concrete – the absence of expensive large porous aggregates. Strength and deformation characteristics of NAPC are determined both at short-term and longterm active loads, which is the basis for further research on the use of this per-special material in bearing and enclosing structures.
non-autoclave gas concrete, fuel ash as filler, low-energy technology, strength and deformation characteristics.