This technology is a pile-row dual concrete formwork designed to allow the boundaries of concrete pouring sections to be installed at desired angles by alternating thick main barrier rods and thin auxiliary barrier rods on segmented frame units connected by hinge supports. The auxiliary leg that holds the auxiliary barrier rod also serves as the rotation axis for adjacent frame units.
Conventional formwork used for pouring large slabs or blocks in sections often suffers from leakage of fluid concrete through boundary gaps, requiring secondary work to chip away hardened leaks with a hammer drill. Furthermore, it has been difficult to freely bend and position the boundaries to match the planar shape of the pouring surface.
This technology features segmented frame units composed of top, bottom, and vertical plates with cylindrical hinge supports, incorporating arc-shaped cutouts to allow rotation without interference. A similarly structured leg-fixing segmented frame unit at the bottom secures the lower ends of the main and auxiliary legs. Both barrier rods are covered with leakage-prevention covers featuring elongated serrated barrier plates on their outer surfaces, which roughen the pouring surface. Length adjustment and detachment prevention are achieved through ball-plunger telescopic legs, leaf spring fasteners, and locking ring segments. Applicable to segmented pouring of apartment and office slabs, foundation work for curved buildings, and underground block construction, it eliminates the need for concrete cleanup and reduces adhesion defects at construction joints.
This invention was developed with support from the Ministry of Land, Infrastructure and Transport's digital-based construction and safety supervision technology development program.
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