The Acceleration of Hardening of Non-autoclaved Foam Concrete with the Mechano-Activated Binder When Constructing in the Arctic and Cold Regions

The purpose of the investigation is to obtain high strength characteristics of foam concrete during its hardening at sub-zero temperatures and using in road embankment structures. It is scientifically proved that the introduction of the granulated slag and waste molding mixture jointly ground with cement into the binder composition reduces the time of cement hydration in winter without using the modern methods of concrete hardening acceleration. The optimal combination of the complex binder components and the amount of injected polymer for foam stabilization are determined. The kinetics of the calcium release in the process of hydration at the initial phases is shown, and the rate of decrease of the alite component in the samples with the mechano-activated binder and polymer foam stabilizer is estimated. It was found that the introduction of the polymer into the active foam does not slow down the hydration process of silicates when introducing a mechano-activated binder. It is shown that the joint grinding of silicate components violates the crystal lattice of minerals and leads to the change in their surface properties. The method of X-ray phase analysis was used in the study of cement stone hardening processes. The paper proposes constructive solutions of road embankments with the use of non-autoclaved foam concrete on the basis of a mechano-activated binder. The use of non-autoclaved foam concrete based on mechano-activated binder is relevant to the construction in the Northern regions. Receive when you activate the secondary of active sites of hydration helps to reduce the binding time binding.