Scholarlink

<p>Both the standard penetration test (SPT) and the cone penetration test (CPT) measures the tip resistance; the CPT, however, takes some other data like sleeve friction and porewater pressure. In principle, there exists a considerable difference between these two considering their penetration modes. Twenty four (24) SPT-CPT proximity locations were considered to find the relations of soil parameters and profiles for various Unified Soil Classification System (USCS) classes of alluvial soil deposits at a selected location of Bangladesh. Five classes of soil like sand and silty sand (SM), silt of low plasticity (ML), silt of high plasticity (MH), clay of low plasticity (CL) and clay of high plasticity (CH) were found at the site. Strong statistical correlations were found to exist between the field SPT value, and CPT cone resistance and the sleeve friction for SM and CH types of soil. For ML, MH and CL classes of soil moderate linear correlations were found. Thus, if the parameter(s) of one of the two methods is available the other could be estimated. Isometrics of soil profile was constructed considering both SPT data, and CPT classifications chart proposed by previous investigators. Present study reveals that both CPT and SPT provide comparable soil profile for sandy soil. However, as many minor soil classifications are proposed in CPT charts as against limited soil classes in SPT, a consensus soil profile could not be achieved; the principal difference being while CPT chart shows a clay soil, SPT interprets it as silty soil, and vice versa.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Penetration test parameters and their correlations for different USCS classes of soil from selected locations of Bangladesh

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年10月24日

查看全文
  • Indrajit Kumar Paul,
  • Md Zoynul Abedin,
  • Partha Saha

摘要

Both the standard penetration test (SPT) and the cone penetration test (CPT) measures the tip resistance; the CPT, however, takes some other data like sleeve friction and porewater pressure. In principle, there exists a considerable difference between these two considering their penetration modes. Twenty four (24) SPT-CPT proximity locations were considered to find the relations of soil parameters and profiles for various Unified Soil Classification System (USCS) classes of alluvial soil deposits at a selected location of Bangladesh. Five classes of soil like sand and silty sand (SM), silt of low plasticity (ML), silt of high plasticity (MH), clay of low plasticity (CL) and clay of high plasticity (CH) were found at the site. Strong statistical correlations were found to exist between the field SPT value, and CPT cone resistance and the sleeve friction for SM and CH types of soil. For ML, MH and CL classes of soil moderate linear correlations were found. Thus, if the parameter(s) of one of the two methods is available the other could be estimated. Isometrics of soil profile was constructed considering both SPT data, and CPT classifications chart proposed by previous investigators. Present study reveals that both CPT and SPT provide comparable soil profile for sandy soil. However, as many minor soil classifications are proposed in CPT charts as against limited soil classes in SPT, a consensus soil profile could not be achieved; the principal difference being while CPT chart shows a clay soil, SPT interprets it as silty soil, and vice versa.