MANUFACTURE OF T-SHAPE BEAM OF PRECAST CONCRETE

摘要

PURPOSE:To provide many different T-shape beams with the same form by providing a pair of side forms higher than the webs of the T-shape beams of various kinds, the transferring device which moves the side forms sideward, the bottom plate which is movable up and down and the paste leakage- preventing device which pushes both sides of the bottom plate through the side form. CONSTITUTION:A bottom plate 20 is raised to a prescribed position, and both side forms 10, 10a are raised to a erected posture from a inclined down posture, and then both side forms 10, 10a are moved in parallel and are fixed to the prescribed position in which concrete is to be placed. After the width setting device 50 of the upper end of both side forms 10, 10a have been fixed, the arm 31 of a paste leakage-preventing device 30 is erected, and then protrusions 34 are fixed to prescribed positions, and pins 32 are inserted thereinto. A pushing jack 33 is energized, and the protrusions 34 of the arm 31 are pushed onto the outer surface of both side forms 10, 10a. Thus, the assembling of the forms for producing the T-shape beam is finished. Next concrete is placed, and after sufficient vibrating and tightening have been applied thereto. said concrete is steam-cured by covering it with a curing mat 61.