CONCRETE FLOOR PANEL

To increase the bending strength of the concrete panel (concrete floor panel) used as a floor slab.SOLUTION: A concrete floor panel 10 has a rectangular parallelepiped shape in which the areas of a front surface 13 and a back surface 14 are larger than those of the side surfaces, and a square CFRP grid bar 20 is embedded parallel to the back surface 14 at a location near the back surface 14 of the concrete floor panel 10. The CFRP grid bar 20 includes a plurality of rods obtained by impregnating a high-strength fiber bundle in which a plurality of long high-strength fibers are bundled with a thermosetting resin or a thermoplastic resin and curing the fiber bundle. The rods comprise a plurality of vertical rods arranged parallel to each other and spaced apart from each other and a plurality of lateral rods intersecting the vertical rods and arranged parallel to each other and spaced apart from each other, and each of the plurality of vertical rods and each of the plurality of lateral rods are woven.SELECTED DRAWING: Figure 1 【課題】床版として用いられるコンクリートパネル（コンクリート床パネル）の曲げ強度を高める。【解決手段】コンクリート床パネル10は，側面に比べて表面13および裏面14の面積が大きい直方体状のもので，コンクリート床パネル10の裏面14に近い箇所に，裏面14に平行に方形のＣＦＲＰ格子筋20が埋設されている。ＣＦＲＰ格子筋20は，複数本の長尺の高強度繊維を束ねた高強度繊維束に熱硬化性樹脂または熱可塑性樹脂を含浸させて硬化させた複数本のロッドを備える。上記ロッドは互いに平行にかつ互いに間隔をあけて配置される複数本の縦方向ロッドと上記縦方向ロッドと交差して互いに平行にかつ互いに間隔をあけて配置される複数本の横方向ロッドとを含み，複数本の縦方向ロッドのそれぞれと複数本の横方向ロッドのそれぞれとが織られている。【選択図】図１