Laboratory evaluation of an indigenous developed light weight deflectometer as a quality control tool for pavement construction

Gunde, Raj; Adepu, Ramesh; Rachakonda, Pranavi; Rao, Nageshwar Ch.

doi:10.1016/j.matpr.2022.01.314

Cited by 5 publications

(4 citation statements)

References 15 publications

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“…It is driven into the soil using a 17.6 lb (8 kg) hammer dropped from 22.6 in (575 mm). Soil shear strength is reported as the Dynamic Cone Penetration Index (DPI) in mm per blow at selected intervals [1][2][3]7,[9][10][11][12][13][21][22][23][24]26,28,30,[33][34][35][36][37][38][39][40][41][42][43][44][45][46]. Equation 1 determines the drive rod movement based on hammer blows (Fig.…”

Section: Dcp Methods and Apparatusmentioning

confidence: 99%

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The Role of Dynamic Cone Penetrometer Testing in Assessing Pavement Subgrade Strength: A Literature Review

Garcia

2024

GEOMATE

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In-situ tests for predicting geotechnical parameters related to shear strength, such as California Bearing Ratio (CBR), typically require drilling boreholes and manual cone driving, which can be timeconsuming, expensive, and labor-intensive. The Dynamic Cone Penetrometer Test (DCPT) has emerged as a simpler, faster, and less expensive alternative for predicting CBR and other geotechnical parameters. This systematic review uses Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines to examine relevant literature on DCP testing for accurately predicting CBR and other geotechnical parameters. After trimming 111 relevant studies to 55, the review discusses various research questions, including the correlation between DCP and CBR, factors such as water content and seasonal variations, and recent advances in DCP testing. The review emphasizes the importance of considering unsaturated soil behavior, such as soil suction, in pavement subgrade design to ensure the longevity and quality of the pavement. The findings provide compelling evidence for the utilization of DCP testing as an essential tool for predicting geotechnical parameters and designing high-performance pavements. By demonstrating the DCPT's remarkable convenience, reliability, and cost-effectiveness in CBR and geotechnical parameter prediction, this study paves the way for significant advancements in pavement design efficiency and economic viability.

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Section: Dcp Methods and Apparatusmentioning

confidence: 99%

“…It measures factors like bearing capacity, stiffness, cohesion, and more. It also evaluates the compaction of pavement materials [2,6,7,9,[11][12][13][14][15][16][17][18][19][20][21][22][23][24][25]. DCPT ensures quality control and is widely employed for site investigation in preliminary design.…”

Section: Dynamic Cone Penetrometermentioning

confidence: 99%

The Role of Dynamic Cone Penetrometer Testing in Assessing Pavement Subgrade Strength: A Literature Review

Garcia

2024

GEOMATE

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“…The ILWD is a portable device used to measure the deflection of unpaved surfaces and thin asphalt layers. The apparatus was developed in the laboratory (Gunde et al, 2022) and was used in the study for pavement evaluation. The ILWD equipment has unique characteristics, such as a trigger assembly for the release mechanism (20 to 25 kg of mass drop) and a base cylinder with a load-cell arrangement on top and a fixture arrangement for fitting the central geophone on the bottom.…”

Section: Indigenous Light-weight Deflectometer (Ilwd)mentioning

confidence: 99%

“…The results showed that the pavement is in fair condition and due to high characteristic deflection, an overlay is required. Gunde et al (2022) evaluated the pavement surface modulus in the field using an Indigenous Light-weight Deflectometer (ILWD) and Dynamic Cone Penetrometer (DCP). The results of the field and laboratory tests showed that the calculated elastic modulus and stiffness characteristics are close to each other for the layer moduli of the pavement layers.…”

Section: Introductionmentioning

confidence: 99%

Assessment and Prioritization of Highway Stretch Deploying Functional and Structural Characteristics

Adepu,

Varanasi,

Devavath

2023

JJCE

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Asphalt pavements deteriorate over time when subjected to fatigue; hence, it is critical to evaluate in-service pavements to keep them in good condition. The goal of pavement evaluation is to assess the functional and structural performance of a pavement section, with a view to improving both the pavement's serviceability and riding quality. Through field and laboratory experiments, the current study attempts to evaluate the performance of pavement stretches. The sections are ranked and prioritized based on the test results. Medchal-Dabilpur national highway was evaluated for pavement roughness, skid resistance and deflections. In addition, core samples with diameters of 100mm and 150mm were collected and tested in the laboratory for moisture susceptibility, tensile strength, stiffness and fracture characteristics. The current study also intends to establish a unique technique for prioritizing pavement maintenance sections based on functional and structural performance in the field and laboratory. The Artificial Neural Network (ANN) approach was used to develop the relationship between pavement functional and structural performance. Heat maps were created and ranked in Python Jupyter notebook to better visualize the performance of functional and structural characteristics of the pavement. The final evaluation results can be validated by supporting them with laboratory investigations based on the pavement-section field samples. The results demonstrate that there is a strong relationship between the structural and functional properties of the pavement. The developed Maintenance Priority Index (MPI) will be useful in rating the maintenance and rehabilitation actions depending on the level of necessity. KEYWORDS: Functional and structural evaluation, Resilient modulus, Tensile strength ratio, Fracture properties, ANN technique, Maintenance priority index.

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Matric Suction-Based Mathematical Model in Predicting California Bearing Ratio Using Dynamic Cone Penetrometer Test

Garcia,

Tabaroei

2024

Transp. Infrastruct. Geotech.

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Laboratory evaluation of an indigenous developed light weight deflectometer as a quality control tool for pavement construction

Cited by 5 publications

References 15 publications

The Role of Dynamic Cone Penetrometer Testing in Assessing Pavement Subgrade Strength: A Literature Review

The Role of Dynamic Cone Penetrometer Testing in Assessing Pavement Subgrade Strength: A Literature Review

Assessment and Prioritization of Highway Stretch Deploying Functional and Structural Characteristics

Matric Suction-Based Mathematical Model in Predicting California Bearing Ratio Using Dynamic Cone Penetrometer Test

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