关键词: 钙质砂, 含水率, 侧限压缩, 颗粒破碎, 压缩变形, 海洋岩土工程

Abstract: Aiming at the particle breakage and compression deformation of calcareous sand, we carried out the calcareous sand compression test under different water content, and analyzed the influential rules of the particle size and water content on particle breakage and compression deformation. The experimental results show that the larger the particle size is, the more easily the calcareous sand particles fracture, and the bigger deformation occurs after compression; particle breakage mechanism is different under various water content, i.e., the particle breakage intensifies with the increase of water content under the condition of low water content while the particle breakage weakens with the increase of water content under the condition of high water content; the water content has a significant impact on compression deformation and calcareous sand has different compressibility under different water content level.

Key words: calcareous sand, confining compression, particle breakage, compression deformation, water content, marine geotechnical engineering