| 摘要 |
PROBLEM TO BE SOLVED: To propose an inexpensive cap for a grouting hole having fire-resistant properties and fire-retardant properties. SOLUTION: The cap for the grouting hole 1 includes a tubular screw member 3 with a threaded periphery, and a cap body 2 made of fire-resistant, cement-based material. The cap body 2 includes a screw part 12 surrounded by the screw member 3, and a fire-resistant part 11 where a concrete surface is exposed. The fire-resistant part 11 has a thickness of at least 60 mm. The fire-resistant cement-based material is fiber-reinforced concrete or fiber-reinforced mortar. A metal mesh is embedded in the fire-resistant part 11. Further, The screw member 3 is composed of with a steel member. COPYRIGHT: (C)2011,JPO&INPIT
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