A unified CPT–SPT correlation for non-crushable and crushable cohesionless soils (original) (raw)

2014, Ain Shams Engineering Journal

A New Correlation between SPT and CPT for Various Soils

World Academy of Science, Engineering and Technology, International Journal of Geotechnical and Geological Engineering, 2015

The Standard Penetration Test (SPT) is the most common in situ test for soil investigations. On the other hand, the Cone Penetration Test (CPT) is considered one of the best investigation tools. Due to the fast and accurate results that can be obtained it complaints the SPT in many applications like field explorations, design parameters, and quality control assessments. Many soil index and engineering properties have been correlated to both of SPT and CPT. Various foundation design methods were developed based on the outcome of these tests. Therefore it is vital to correlate these tests to each other so that either one of the tests can be used in the absence of the other, especially for preliminary evaluation and design purposes. The primary purpose of this study was to investigate the relationships between the SPT and CPT for different type of sandy soils in Florida. Data for this research were collected from number of projects sponsored by the Florida Department of Transportation ...

Comparison between soil properties derived from CPT tests and laboratory tests

ce/papers, 2018

Loose sands or very soft clays are sometimes hard to evaluate from geotechnical purposes with classical methods. The aim of the work is to estimate the applicability and reliability of some of the most popular relations derived from CPT in the case of marine sediments of Black Sea. The paper presents comparisons between values of main geotechnical parameters derived by well known formulas from CPT and laboratory tests executed on remoulded samples of such soils. In the first instance a classical soil behaviour chart was used in conjunction with grain size analyses. In the next step estimations of saturated or dry unit weights and friction angle of cohesionless submersed soils, based on well known relations was found in very good agreement with lab test values obtained from thin-walled tube samples. Finally, the evaluation of the state of stress puts in evidence that the investigated deposits are mainly under consolidate or normal consolidate and at least one of three different classical relations for the estimation of relative densities, fits well with values of lab tests.

Case Study: use of correlations between SPT and CPT data from geotechnical investigation to understand soil properties

Case Study: use of correlations between SPT and CPT data from geotechnical investigation to understand soil properties, 2021

This article present data from a subsurface exploration analysis is ascertaining the various soil profile components at test locations, providing laboratory test results for use by the design engineers in preparing and installation techniques, record groundwater levels at the time of the investigation and discuss the potential impact on the proposed construction. Usually the scope of the exploration and analysis included site geologic research and evaluation, subsurface exploration, field testing and sampling, laboratory testing, geotechnical engineering analysis and evaluation of the subsurface materials.

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