Quality assurance and quality control of subgrade compaction using the dynamic cone penetrometer

Ganju, Eshan; Kim, Hobi; Prezzi, Mônica; Salgado, Rodrigo; Siddiki, Nayyar Zia

doi:10.1080/10298436.2016.1227664

Cited by 14 publications

(7 citation statements)

References 12 publications

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“…Un factor clave en dicho control es adherirse a un plan de procedimientos durante la ejecución de los trabajos [2]. En la actualidad los métodos estandarizados para medir la densidad in situ y contenido de humedad de un relleno compactado de forma directa son, el cono de arena y carburo de calcio o densímetro nuclear [1] [4], estos resultados se comparan con las pruebas de compactación obtenidas en laboratorio, normalmente con el Proctor estándar o modificado, en dicha prueba se obtiene la máxima densidad seca y el óptimo contenido de humedad, con los cuales se calcula el grado de compactación del relleno.…”

Section: Introductionunclassified

“…Artículo de Investigación. 24 (2), 77-91, julio-diciembre, 2023 ISSN: 2477-9539 ejecución, asimismo para el uso correcto del equipo se requiere una calibración entre la resistencia del cono y la densidad seca del relleno, y se pueden realizar en el laboratorio o in situ. De acuerdo con la revisión bibliográfica disponible en el Perú existen escasos estudios del control de calidad con el DCP en rellenos de suelos granulares.…”

Section: Introductionunclassified

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Estimación de la densidad seca de un relleno granular utilizando el penetrómetro dinámico de cono

LÓPEZ

Rojas

2023

Gaceta Técnica

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El control de calidad de un relleno generalmente se realiza con métodos estandarizados, como el cono de arena y el densímetro nuclear, pero se viene planteando un método alternativo, el penetrómetro dinámico de cono, que usualmente se utiliza para calcular la relación de soporte de California in situ. En esta investigación se utilizó el penetrómetro dinámico de cono para efectuar el control de calidad de un suelo de grava limosa arcillosa con arena. Primeramente se caracterizó el material, se realizaron los ensayos básicos y específicos, por otro parte, se realizó un relleno de prueba de 12,00m de longitud dividida en siete zonas, compactados con diferentes energías, realizándose pruebas de cono de arena y penetrómetro dinámico de cono. Con los datos obtenidos se determinó una ecuación de correlación, donde, el índice de penetrómetro dinámico de cono fue la variable independiente y la densidad seca la variable dependiente. Con la ecuación se procedió a calcular de densidad seca de una plataforma compactada con una sola energía de prueba de 2,40x2,40m, se estimó una buena correlación entre la densidad seca compactada e índice de penetrómetro dinámico de cono, mostrando así la posibilidad de su uso en el control de calidad de un relleno granular. En la comparación de la densidad seca calculada a partir de la ecuación de correlación, y la densidad hallada con el cono de arena se observó que varía alrededor de un 6%

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Section: Introductionunclassified

Estimación de la densidad seca de un relleno granular utilizando el penetrómetro dinámico de cono

LÓPEZ

Rojas

2023

Gaceta Técnica

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“…Different research efforts have been undertaken to develop and implement modulusbased quality management procedures to ensure that compacted pavement materials meet the material properties used in mechanistic pavement design practices [1][2][3][4][5][6][7]. These procedures involve the use of in situ modulus/deflection-based nondestructive testing (NDT) devices that estimate the stiffness properties of compacted geomaterials.…”

Section: Introductionmentioning

confidence: 99%

A Machine-Learning Approach for Extracting Modulus of Compacted Unbound Aggregate Base and Subgrade Materials Using Intelligent Compaction Technology

et al. 2021

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This study presents a rigorous approach for the extraction of the modulus of soil and unbound aggregate base materials for quality management using intelligent compaction (IC) technology. The proposed approach makes use of machine-learning methods in tandem with IC technology and modulus-based spot testing as a local calibration process to estimate the mechanical properties of compacted geomaterials. A calibrated three-dimensional finite element (FE) model that simulates the proof-mapping process of compacted geomaterials was used to develop a comprehensive database of responses of a wide range of single and two-layered geosystems. The database was then used to develop different inverse solvers using artificial neural networks for the estimation of the modulus from the characteristics of the roller and information about the geomaterials. Several instrumented test sites were used for the evaluation and validation of the inverse solvers. The proposed approach was found promising for the extraction of the modulus of compacted geomaterials using IC. The accuracy of the inverse solvers is enhanced if a local calibration process is incorporated as part of a quality management program that includes the use of in situ measurements using modulus-based test devices and laboratory resilient modulus testing. Moreover, compaction uniformity plays a key role in the retrieval of the modulus of geomaterials with certainty. The proposed approach fuses artificial intelligence with mechanistic solutions to position IC as a technology that is well suited for the quality management of compacted materials.

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“…Researchers have been studying the relationship between the LDCP results and some control design parameters of compacted soils, [19,20]. The existing correlations between LDCP and the traditional cone penetration test CPT were examined by [21] and found to be not accurate for intermediate soils, ranges from silty sand to silty clay.…”

Section: Introductionmentioning

confidence: 99%

Use of Lightweight Dynamic Cone Penetrometer for Compaction Control of Cohesionless Soils

Mansour¹

2019

GEOMATE

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Evaluation of the adequacy of field compaction of granular soils, has always been a challenge for geotechnical engineers. The Lightweight Dynamic Cone Penetrometer (LDCP) has been established as one of the most versatile techniques, as it significantly reduces the required effort and cost. This research has been conducted to correlate the readings of LDCP laboratory tests, to compaction parameters of cohesionless soils. An experimental program has been performed on four different types of granular soils, at various compaction levels and moisture content values. The investigated soils included two sandy soils with different gradation and two different admixtures of sand with crushed dolomitic limestone. A series of LDCP and sand-cone tests have been conducted on soil samples which were compacted in a cubic steel mold, 60cm side length. The laboratory results have been integrated into a number of predictive correlations, which are capable of assessing the soil compaction parameters including; relative compaction, relative density, dry density and uniformity coefficient. Moreover, the compacted granular soils were found to be more sensitive to changes of moisture content from the optimum value, at lower ratios of relative compaction.

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Quality assurance and quality control of subgrade compaction using the dynamic cone penetrometer

Cited by 14 publications

References 12 publications

Estimación de la densidad seca de un relleno granular utilizando el penetrómetro dinámico de cono

Estimación de la densidad seca de un relleno granular utilizando el penetrómetro dinámico de cono

A Machine-Learning Approach for Extracting Modulus of Compacted Unbound Aggregate Base and Subgrade Materials Using Intelligent Compaction Technology

Use of Lightweight Dynamic Cone Penetrometer for Compaction Control of Cohesionless Soils

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