Механоактивация известково-кварцевых сырьевых смесей – эффективный способ получения силикатного камня безавтоклавного твердения. Приведены экспериментальные данные о составе и количестве поверхностных фаз, возникающих на зернах кварца при совместном помоле компонентов сырьевой смеси, а также их влиянии на механизм и кинетику фазообразования и твердения известково-кварцевого вяжущего в условиях пропаривания. Mechanical activation of lime-silica raw mixture is an effective way of obtaining lime stone hardening without autoclaves. We present experimental data on the composition and quantity of surface phases occurring on grains of quartz joint components of the raw meal grinding, as well as their influence on the mechanism and kinetics of phase formation and hardening of lime-silica binder in steaming. Mechanical activation of lime-silica raw mixture is an effective way of obtaining lime stone hardening without autoclaves. We present experimental data on the composition and quantity of surface phases occurring on grains of quartz joint components of the raw meal grinding, as well as their influence on the mechanism and kinetics of phase formation and hardening of lime-silica binder in steaming.