Correlation between the dynamic cone penetrometer and the California support relationship in the field for the sub-rasant floor of the Portoviejo-Manta road

Authors

DOI:

https://doi.org/10.13140/RG.2.2.12491.54569

Keywords:

dynamic cone penetrometer, DCP, California support relationship, CBR

Abstract

The Portoviejo – Manta road is a main land communication artery in the province of Manabí in Ecuador, a fundamental axis in the country's economic, social and tourism development. The decentralized autonomous government of the province of Manabí based on studies proposes an extension of the four existing lanes to six; for this, a comprehensive analysis involving a traffic, geological and geotechnical study is important. Given that this province at superficial levels presents a uniform clay formation, the present investigation evaluates the conditions of the track support terrain, proposing two dynamic cone penetrometer methods and the California support ratio, examining at the same time if the correlation between them exists. Standardized field and laboratory work was carried out over a length of 35 kilometers with paired tests every 500,00 m. The data obtained from the field and laboratory were processed and analyzed using statistical linear regression methods, validated through hypothesis testing and significance of the p-value. At first, a direct correlation was obtained between both methods and an equation with a correlation value of 0,80, with a significance of 7,246x10-5. A second multiple regression equation was carried out in which correlation values were obtained between the methods, plus the physical parameters of the soil of 0,82 and its corresponding p-value of 0,0091, thus validating the reliability of the results.

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Author Biographies

Hugo Florencio Torres Merino, Universidad Politécnica Salesiana. Ecuador

Hugo Florencio Torres Merino. Civil engineer. Master in road engineering. Universidad Politécnica Salesiana. Ecuador. Email: htorres@ups.edu.ec

Joan Alberto Castillo Morejón, Universidad Politécnica Salesiana. Ecuador

Joan Alberto Castillo Morejón. Civil engineer. Universidad Politécnica Salesiana. Ecuador. Mail: joancm1000@gmail.com

Lenin Hernán Mena Garzón, Universidad Politécnica Salesiana. Ecuador

Lenin Hernán Mena Garzón. Ingeniero Civil. Universidad Politécnica Salesiana. Ecuador. Correo: lenin321@hotmail.com

David Patricio Guerrero Cuasapaz, Universidad Politécnica Salesiana. Ecuador

David Patricio Guerrero Cuasapaz. Civil engineer. Master in structures. Research professor at the Universidad Politécnica Salesiana. Ecuador. Email: dguerrero@ups.edu.ec

References

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[6] ASTM D 6951, «Standard Test Methods for Use of the Dynamic Cone Penetrometer in Shallow Pavement Applications» American Society of Materials, West Conshohocken, PA, 2003

[7] ATSM D 2922, «Standard Test Methods for Density of Soil and soil-aggregate in place by nuclear methods. Shallow depth» American Society of Materials, West Conshohocken, PA, 2012

[8] ASTM D 2487, «Standard Test Methods for Classification of soils for engineering purposes (Unified Soil Classification System)» American Society of Materials, West Conshohocken, PA, 2017

[9] E. Cobo, J. Cortés y J. González, «Prueba de significación y contraste de hipótesis» Departamento de Estadística e Investigación Operativa, Universidad Politécnica de Cataluña, 2014

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Published

2020-01-19

How to Cite

Torres Merino, H. F., Castillo Morejón, J. A., Mena Garzón, L. H., & Guerrero Cuasapaz, D. P. (2020). Correlation between the dynamic cone penetrometer and the California support relationship in the field for the sub-rasant floor of the Portoviejo-Manta road. Gaceta Técnica, 21(1), 27-43. https://doi.org/10.13140/RG.2.2.12491.54569

Issue

Section

Research articles