Mathematical modeling technology of a foundation slab concreting on a frozen base

Abstract

The current regulations prohibit to concretebuildings sights on a base with low temperature. The base warming is a long and energy-intensive process. The substantiation of concreting technology was carried out to concrete the foundation slab at an air temperature of 20°C on a frozen base. The first stage was the use of mathematical method modeling for the feasibility of a base heating. After making sure that the heating had been inefficient, the possible to provide favorable temperature holding conditions due to the heat release of the cement, compensating for heat loss through the side faces of the slab or by the concrete heating on contact with the base and on the exposed surface was estimated. Mathematical modeling, confirmed by the results of real concreting, allowed to determine the technology of heat treatment, which provided the necessary quality of concrete, hardened on a frozen base.