ANCHORAGE DEVICE, METHOD FOR PRODUCING THE SAME, AND CONCRETE STRUCTURE HAVING THE ANCHORAGE DEVICE MOUNTED THEREIN

摘要

PROBLEM TO BE SOLVED: To solve a problem of an anchorage device formed of a ceramic sintered body, i.e., a problem of being vulnerable to vibrations and therefore prone to fracture because the anchorage device cannot have high accuracy on a joint surface between a male cone and a female cone, resulting in local joint of the male and female cones. SOLUTION: The ceramic sintered body contains aluminum oxide as the main ingredient which includes therein a fibrous material, and the anchorage device is formed of the resultant ceramic sintered body. Then, the anchorage device formed of the ceramic sintered body is for use in constructing the concrete structure, and therefore predetermined strength of the concrete structure is maintained over a long period of time.