Device and method for controlling the surface pressure of flexible molds on concrete parts reinforced with non-metallic fibers

(10) WO2025074358A1

(22) 23.11.2024

(43) 10.04.2025

(57) The production of hollow concrete elements reinforced with non-metallic materials, particularly basalt fibers, aims to improve assembly efficiency and enhance resistance to tensile forces through various reinforcement methods. This technique for creating hollow concrete formwork, which incorporates non-metallic reinforcement, is suitable for constructing both permanent and temporary structures, or a combination of the two, and is carried out using flexible molds manipulated by an incompressible fluid. The use of prefabricated hollow concrete formwork, reinforced with non-metallic fibers, supports the construction of elements that can be filled with either concrete or non-concrete materials. Furthermore, the method for producing lightweight concrete components reinforced with non-metallic materials enables buoyancy on water surfaces and the possibility of conversion into solid concrete structures. In the process of fabricating concrete components with complex shapes made from non-metallic fibers, especially basalt, a notable challenge is the detachment of the concrete element from the mold, which frequently leads to surface damage and, in some cases, makes removal from the mold entirely impractical. To address this challenge, the claimed invention proposes two distinct methods that involve the utilization of mechanical or mechatronic arms to apply pressure to the inner surface of the flexible mold, along with the application of fluid pressure during the formation of the concrete piece, followed by a reduction in pressure when separating the piece from the mold.

(71) Sadeghi, Sara, IR