Abstract

Calcareous soil is widely distributed throughout tropical areas. Due to its unique sedimentary environment and soil behaviors, severe engineering problems and disasters have occurred in many regions. To understand the differences in the mechanical properties of calcareous soils in different regions, material composition, physical and mechanical properties of calcareous soils, including specific gravity and void ratio, compression properties, shear properties, and strength properties, were analyzed. The relationship between the sedimentary environment, material composition, and mechanical properties of calcareous soil was examined based upon the results. Results show that the calcareous soil in the South China Sea has a high calcium carbonate content, large particle size, high compressibility, and low bearing capacity, while sand from the Kish Island in the Persian Gulf and Agami sand from Egypt have low compressibility and high bearing capacity. In the South China Sea, Calcareous soil is more difficult to crush than those from the Hormuz Island and Bushehr Port in the Persian Gulf, Dog’s Bay in Ireland, and Quiou in France. Overall, calcareous soils from various locations exhibit significant differences in properties based upon their physical traits. It is suggested that the influence of sedimentary environment and geological conditions should be considered in engineering constructions.

摘要

钙质土壤广泛分布于整个热带地区。由于其独特的沉积环境和土壤行为，许多地区都发生了严重的工程问题和灾害。为了解不同地区钙质土力学性质的差异，分析了钙质土的物质组成、物理力学性质，包括比重和孔隙比、压缩特性、剪切特性和强度特性。根据研究结果，研究了钙质土的沉积环境、物质组成和力学性质之间的关系。结果表明，南海钙质土碳酸钙含量高，粒径大，压缩性高，承载力低，而波斯湾基什岛的沙子和埃及的阿加米沙子压缩性低，承载力高。在南海，钙质土比波斯湾的霍尔木兹岛和布什尔港、爱尔兰的狗湾、法国的基欧等地更难粉碎。总体而言，来自不同地点的钙质土壤根据其物理特性表现出显着的特性差异。建议工程建设应考虑沉积环境和地质条件的影响。和法国的 Quiou。总体而言，来自不同地点的钙质土壤根据其物理特性表现出显着的特性差异。建议工程建设应考虑沉积环境和地质条件的影响。和法国的 Quiou。总体而言，来自不同地点的钙质土壤根据其物理特性表现出显着的特性差异。建议工程建设应考虑沉积环境和地质条件的影响。