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Filing date
Publication date
Application filed by 石川島建材工業株式会社filedCritical石川島建材工業株式会社
Priority to JP4301983UpriorityCriticalpatent/JPS59147799U/en
Publication of JPS59147799UpublicationCriticalpatent/JPS59147799U/en
(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【図面の簡単な説明】[Brief explanation of the drawing]
図面は本考案の一実施例を示す断面図である。
１・・・・・・セグメント本体、４・・・・・・保護層 。The drawing is a sectional view showing an embodiment of the present invention. 1...Segment body, 4...Protective layer.
Claims (1)
【実用新案登録請求の範囲】[Scope of utility model registration request]セグメント本体の内表面に、少な（とも耐摩耗性、耐腐 食性および耐透水性のある素材からなる保護層を設けた ことを特徴とするコンクリートセグメント。A concrete segment characterized by having a small protective layer made of a wear-resistant, corrosion-resistant, and water-permeable material on the inner surface of the segment body.