Abstract
ABSTRACT Soil compression curve (CC) provides parameters to identify soil load-bearing capacity and susceptibility to compaction. An Excel add-in (ACC) incorporating graphical procedures for mathematical models for soil CC description and calculation of parameters was developed. By using the ACC, soil CC can be described by means of the Casagrande method, mathematically operationalized with the van Genuchten equation, with or without restrictions on its parameters, and by Dias Junior and Pierce method in its original form and also modified using the void ratio rather than soil bulk density. The ACC uses a single Excel spreadsheet for input and output data, in addition to a graphical interface and a tool for exporting editable charts. Compared to SAS statistical software, the ACC minimized the sum of squared residuals and estimated parameters of mathematical models with the same efficiency for 347 compression curves. The ACC programming script is available and can be modified or used as a framework for other programming projects.
Highlights
Soil compression curve (CC) has been used to study soil load-bearing capacity (KELLER et al, 2011; SEVERIANO et al, 2010; MACHADO & TREIN, 2013)
Soil CC was described as the graphical relation between the base 10 logarithm of the applied load and the void ratio (ε) (CASAGRANDE, 1936)
The add-in developed is called ACC, which means an add-in to the soil compression curve
Summary
Soil compression curve (CC) has been used to study soil load-bearing capacity (KELLER et al, 2011; SEVERIANO et al, 2010; MACHADO & TREIN, 2013). Mathematical relationships between log σ and ε and between log σ and soil bulk density (ρ) were proposed to describe soil CC. Regardless the strategy, the main objective is to determine the precompression stress (PCS), which may indicates soil load-bearing capacity, and the compressibility coefficient or compression index (CI), which indicates soil susceptibility to compaction. The inherent subjectivity of graphical methods has raised several mathematical proposals in recent years. DIAS JUNIOR & PIERCE (1995) proposed a simple mathematical technique (combination of straight lines) to determine soil PCS and CI values.
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
