METHOD OF MANUFACTURING PRODUCTS UNDER PRESSURE FROM HIGH-STRENGTH FIBROUS CONCRETE Russian patent published in 2018 - IPC B28B3/00 B28B11/24 C04B40/00 C04B20/00 

FIELD: construction.

SUBSTANCE: method of manufacturing products under pressure of high-strength fibrous concrete, by which reinforcement is installed (if necessary) and concrete mixture is laid in the mould cavity. Thereinafter, the mould is closed and pressure is created inside the mould by means of a press, whereby the concrete mixture is pressed out. After the concrete has gained strength, the product is released from excess pressure and removed from the mould. Wherein the concrete mixture is filled with metallic or non-metallic fibres before the concrete mixture is laid in the mould, whereby fibrous concrete is obtained. The concrete mixture laid in the mould is held therein at a pressure of not less than 2.5 MPa before gaining the stripping strength, but not less than for 240 minutes. The hardening concrete mixture is heated to a temperature of not more than 80°C due to feeding a coolant inside the mould cavity. Wherein the coolant temperature for heating up the products to be moulded should not exceed 95°C, and the temperature increase rate should not exceed 35°C per hour.

EFFECT: improving the technical characteristics of products, reducing the reinforcement consumption, reducing the labour intensity and the work implementation time.

4 dwg