| 摘要 |
PURPOSE:To raise the stability of concrete block work by a method in which one end of the horizontal part of a T-shaped planar form is provided with a recessed portion and the other end is provided with a protruded portion, the four corners of a long square form of the sides are cut into rectangular equilateral triangle form, and the central parts of upper and lower long sides are cut into a trapezoidal recessed form and a trapezoidal protruded form, respectively. CONSTITUTION:In forming a concrete block, a recessed portion 3 is provided on one end of a horizontal part 1 of a T-shaped planar form, a protruded portion 4 to be fitted into the recessed portion 3 is formed on the other end, the four corners of a long square form of the sides are cut into a rectangular equilateral triangle face 5, and the central parts of the upper and lower long sides of a long square form are cut into a sidewardly long trapezoidal recessed form 6 and a protruded form 7 to be fitted into the recessed form 6, respectively. At the first stage, the blocks are continuously arranged in such a way as to fit the recessed and protruded convexed parts 3 and 4 into each other, and at the second stage and the following stages, and the protruded faces 5 of the upper stage are contacted with the protruded faces 7 of the lower stage and set in such a way as to enable the upper and lower block faces 6 and 7 to mutually fit into each other and also the faces 7 to couple with each other. The concrete blocks can thus be stacked up with good structural stability and also with good working efficiency. |
