| 摘要 |
PROBLEM TO BE SOLVED: To obtain a spacer wherein when the spacer is interposed between concrete products, the products can be prevented from discoloring, while the spacer may not interfere with curing with a contact area with concrete faces reduced. SOLUTION: A spacer 1 is a single body formed of a resin material, while a spacer body 2 forms a plate wherein a protruding coupling part 3 and a recessed coupling part 4 are formed at its front and rear ends respectively. A plurality of ribs 6αare made to protrude on surface and rear faces of the spacer body 2. A series of ribs 6 forming the ribs 6αare formed by placing the ribs 6αin an arch along a lengthwise direction of the spacer body 2 with predetermined intervals. A total of three strings of ribs 6 are formed at both side rims and at the center of the spacer body 2.
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