A STUDY ON APPLICATION OF GEOGRID-REINFORCING TECHNIQUE TO CRUSHED CONCRETE AGGREGATE FOR UTILIZATION AS EMBANKMENT MATERIAL

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  • 破砕コンクリートへのジオグリッド補強土技術の適用に関する考察

Abstract

In order to widely use of crushed concrete aggregate (CCA) as embankment material, the applicability of geogrid-reinforcing technique was investigated in this study. As a result of various laboratory tests including plane strain compression test, it was confirmed that the mechanical property of CCA can be improved due to geogrid reinforcing. The quality control method based on the degree of compaction Dc can be also applied to CCA as well as natural coarse-grained soil materials. Because the density condition at Dc=90% at standard soil-compaction energy 1Ec is not dense, on the other hand, it is difficult to significantly improve the strength and deformation characteristics of CCA even if applying reinforcing technique. To obtain the effective reinforcing effect, sufficient soil compaction is required.

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