ロックラ-PCパイプの試験結果 : 製品・応用に関する資料 : PC構造特集号
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概要
- 論文の詳細を見る
NIPPON ROCLA PIPE CO. has been producing noncylinder prestressed concrete pipes since the fall of 1961. One of the products which has 1 200 mm inner diameter and is designed for the inner pressure of 13.0 kg/cm^2 was tested hydrostatically and under external load. The results of test obtained are as follows : (1) Under the hydrostatic pressure up to 12.0 kg/cm^2, there was no leakage on outer surface of the pipe and at rubber joints. As the capacity of the bulkhead of the machine was not sufficiently large, the test up to 13.0 kg/cm^2 pressure was given up. (2) Under the external load up to 8.25tons per meter (total load of 33.0tons), could no visible crack was bound at any point of the pipe. From analyses about the stress and measured strain on concrete surface at the end of the pipe, the prestress in the core concrete was supposed to be as much as the designed value, and the flexural strength of the concrete to be sufficient.
- 社団法人日本材料学会の論文
- 1962-12-15