| 摘要 |
FIELD: construction, particularly multilayered building blocks and composite stones used for building and building structure wall erection. ^ SUBSTANCE: building block comprises outer gas-tight layer and porous core. Outer main surface of the block has drainage means, temperature sensor, namely bimetal plate, and solar battery. Vacuum pump actuated by solar battery and water accumulation vessel is installed between outer and inner surfaces of the block. Pump has pipes. One pipe connects the pump with porous core, another one connects pump with orifice made in outer block surface. Water accumulation vessel comprises pipes. One pipe communicates the vessel with water drainage means, another one connects the vessel with porous block core and is provided with valve controlled by bimetal plate. If ambient temperature is less than room temperature bimetal plate provides valve installation closed position. If ambient temperature is greater than room temperature bimetal plate provides valve installation opened position. ^ EFFECT: increased operational capabilities. ^ 3 cl, 2 dwg
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