| 摘要 |
<p>MORTARLESS CONCRETE BLOCK SYSTEM HAVING REINFORCING BOND BEAM COURSES In a mortarless interlocking concrete block system, general purpose intersection blocks 40 have parallel grooves 47 formed on their bottom surfaces 46, but each has mating ridges 45 on the upper surface 44 of its inner end 41 only. The top surface 44 of its corner end portion 51 is flat, to permit an overlying course to fit thereon either at right angles or in linear alignment. The corner end portion 51 has, in each of its two opposite side faces 54, 56 and in its outer end face 52, parallel vertical grooves 53, 55, 57 matable with tongues 17 of the system's stretcher blocks 10, to provide interengagement at both left and right corners and T-shaped and crossing-wall intersections. For bond beam courses, a bond beam intersection block 90 with similarly grooved 112, 114, 116 corner end 110 faces 111, 113, 115 has at its inner end portion 93 a closed-bottom channel 99 with saddle-like webs 101 extending between the channel sides 92, to open through to its corner core 120 and support horizontal reinforcing rods b. Consistently formed bond beam blocks 70 are provided, whose tongues 75 may engage any of the grooved 112, 114, 116 corner end 110 faces 111, 113, 115 at wall corners and intersections. Breakout provisions 121 in the corner core 120 inward of these faces 111, 113, 115 make it simple, at any intersection, to lead horizontal reinforcing rods b to the cored corner 120 end portions 110, through which vertical rodding a and grouting is provided. By utilizing horizontal reinforcing rods 133 formed at a right angle to extend through the corner block 90 between its two adjacent blocks 70, the two perpendicular walls may be more securely tied together, to prevent vertical cracking. This furnishes to the easily-constructed mortarless wall block system a sturdy, reinforced concrete grid. Where desired, blocks made of other material, for example, redwood may be utilized; also in miniature, the invention may be incorporated in sets of toy blocks, which have exceptional educational value.</p> |
