SRC(Steel Reinforced Cement)工法による平板要素の耐衝撃試験

概要

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Accidents that a sailing boat comes into collision with marine animals such as whales or floating bodies are increasing. The hull of sailing boat is usually manufactured by using FRP or ferrocement. Ferrocement is considered to be heavy and brittle, and to need plenty of time to work in comparison with FRP. However, several new manufacturing techniques have been developed. For instance, the SRC(Steel Reinforced Cement) that uses hard drawn steel wires instead of welded steel wire fabrics employed in the conventional methods, is able to reduce both the working time for banding the reinforced materials and the thickness of the mortar. In this study, two types of ferrocement plates manufactured by the conventional method and SRC method were tested both statically and dynamically, and the strength properties of the ferrocement and FRP were discussed. The following results were obtained. 1. The use of silica and lightweight aggregate instead of river sand effectively reduced the weight of ferrocement. 2. Emulsion and steel fiber added to mortar improved the strength against cracking and fracture of ferrocement plates in static and impact tests. 3. The impact test showed that strength properties of the SRC specimen added emulsion and steel fiber were almost the same as those of FRP.
独立行政法人海上技術安全研究所の論文
1991-01-30