Investigation of the effect of electric heating of expanded clay concrete mixture on the structure and properties of lightweight expanded clay concrete exposed to high temperatures

Objective. The aim of the study is to effect preliminary electrical heating concrete mixture on structure and properties heat-resistant expanded clay a composite binder before drying at temperature 105°C. Method. It based domestic foreign experience in studying various concretes, including ones. Result. A laboratory stand for mixtures has been developed tested. influence electric process self-steaming studied. mode time developed. Stress dependences are obtained due difference coefficients linear expansion coarse fine aggregates mortar part temperature, as well ultimate strength under modes preheating with ratio components: Portland cement 70%, mineral additive 30%. Conclusion. Based results analysis studies carried out field mixtures, it can be concluded that heatresistant filler an activated will make possible obtain higher physico-thermal operational characteristics, reduce technological manufacturing products, period bringing thermal unit operating mode.