Yuji Higuchi, Masaaki Ishikawa, Toshiaki Furuno, Eiji Okamura, Masahiro Mutoh, Hiroyuki Nishimura, Asami Nakai, Hiroyuki Hamada
Papers # 2012 Barcelona
Pipe materials that are resistant to damage by thirty-party works were investigated with attention to materials already used for other purposes. Pipes for underwater cables, water service and agricultural use, both multiple-layer and single-layer types, were selected for the test. Protective materials were also selected. Heavy machinery used on construction sites was employed and press, shock, and scratch mode tests were carried out by simulating the working mode of heavy machinery. As for single-layered, Nylon pipes demonstrated a high resistance to pressing and scratches by heavy machinery. As for multi-layered, composite pipes withstood pressing, shocks and scratches. Wrapping protective materials around the PE80 pipe prevented damage by heavy machinery just as composite pipes did. The PE80 is currently used for gas pipes in Japan and it combines superior performances in earthquake proofing, corrosion resistance, chemical resistance, flexibility, workability, reliability, and economic efficiency. Therefore, when investigating the introduction of new materials, it is important to look at the scope from a long-term perspective.
