Аннотации:
The research on determining
rational parameters of heat treatment
of a concrete mixture based on hollow
aluminosilicate microspheres has
defined the features of the intensifying
action on the structural concrete mixture
by low-pressure steam with optimum
heat and mass transfer. Optimum values
of temperature, humidity and speed of
the medium have been identified. The
obtained heat treatment parameters
are subject to general regularities of
structures for the formation of hydraulic
bindings and are in accordance with
production conditions, thus providing
possibilities for their adaptation
into production. The mechanisms for
determining the strength of concrete
stone according to the structural and
thermal effectiveness of the active
medium have been defined. Thanks to the
strength-building mechanisms obtained,
it is possible to reduce the thermal
destruction capacity of the system while
reducing the process heat consumption.
It is confirmed that the main direction
in reducing the destructive capacity is
determined by the mass flow of moisture,
which has the greatest heat capacity
and the least thermal conductivity at
the initial stages. The invention relates
to periods of temperature rise and
isothermal heating without impairing
the mechanical properties of concrete. It
is shown that the real duration excludes
high-temperature destruction processes,
thereby increasing the mechanical
strength of concrete and reducing the
overall energy consumption. Thus, there
is a reason to argue that it is possible
to produce strong and light concrete
products under accelerated structure
formation and new technologies for
heat treatment of concrete based on
lightweight fillers with reduced heat
consumption
