Evaluation of Correlations between Intelligent Compaction Measurement Values and In Situ Spot Measurements

Foroutan, Maziar; Bijay, K. C.; Ghazanfari, Ehsan

doi:10.1061/9780784482810.062

Cited by 8 publications

(3 citation statements)

References 12 publications

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“…Although IC rollers can provide ICMV for the entire asphalt layer being compacted, ICMV cannot be directly used to access the asphalt density unless a strong correlation between ICMV and asphalt density is established. Several field studies have been undertaken to examine the ICMV-asphalt density correlation (Maupin, 2007;Savan et al, 2015;White et al, 2010;Hu et al, 2019;Chang et al, 2018;Foroutan et al, 2020), and the reported linear regression correlation coefficients between ICMV and asphalt density are summarised in Table 1.…”

Section: Icmv-asphalt Density Correlationmentioning

confidence: 99%

In-situ Spot Test Measurements and Icmvs for Asphalt Pavement: Lack of Correlations and the Effect of Underlying Support

Sivagnanasuntharam¹,

Sounthararajah²,

Kodikara³

2022

Preprint

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The main aim of this paper is to analyse the performance of different intelligent compaction measurement values (ICMVs) and compare them with spot test measurements for asphalt pavement. To accomplish this, a two-layer asphalt testbed was constructed using an instrumented double-drum roller. All ICMVs [compaction meter value ( ), compaction control value ( ), roller-integrated stiffness ( ), and vibratory modulus ( )] were calculated using the same accelerometer data collected during the construction of the asphalt testbed. A novel method using the cross-correlation technique was developed to estimate the phase lag between the excitation force of the roller drum and the ground reaction, which is required for and calculations. The analysis of ICMV data showed a strong correlation between and , while and demonstrated a strong correlation only when double jump of the roller drum did not occur. Further, none of the ICMVs recorded during the last roller pass of asphalt compaction showed an acceptable correlation with asphalt densities [measured using a non-nuclear density gauge (NNDG)], mainly due to the influences of the underlying support and asphalt temperature on ICMVs. A correction method to decouple the influence of underlying support on was developed and validated using existing data from the literature. The applicability of this method for different field scenarios was demonstrated using numerical modelling.

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Section: Icmv-asphalt Density Correlationmentioning

confidence: 99%

In-situ Spot Test Measurements and Icmvs for Asphalt Pavement: Lack of Correlations and the Effect of Underlying Support

Sivagnanasuntharam¹,

Sounthararajah²,

Kodikara³

2022

Preprint

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“…Many research studies have covered several of these problems (11)(12)(13)(14)(15)(16)(17), including programs to establish the mechanical, strength, and physical properties of soils (12,(18)(19)(20), relationships between various physical and mechanical test methods (15,(21)(22)(23), variables affecting different test methods (24)(25)(26)(27)(28)(29), design philosophies (30), quality control and assurance in construction (25,31), and so forth. Soil stabilization with lime is widely accepted for improving problematic soils like clay in subgrade engineering (32)(33)(34).…”

Section: Introductionmentioning

confidence: 99%

Experimental Evaluation of Stiffness Properties of a Quicklime-Stabilized Clay Subgrade Using a Resistivity Plate Loading Testing Device

Ackah

Yang

Feng

2023

Transportation Research Record: Journal of the Transportation R

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Quicklime-mixing in soil stabilization applications for subgrade construction is crucial to its engineering performance and controlling quicklime and water content. Modern construction quality control devices and methods have improved construction quality control substantially. Certain devices, meanwhile, still need to be studied more thoroughly. This study used the resistivity plate loading device to assess the physical and stiffness properties of compacted quicklime-stabilized subgrade instantaneously and simultaneously for compaction quality control. The Taguchi L9 orthogonal array was used to design the experiment considering the dry density, test time, quicklime, and water content at various input factor levels. The pH, cation exchange capacity, conductivity, X-ray diffraction analysis (XRD), and scanning electron microscope (SEM) tests were further conducted. Analysis of the Taguchi experiment shows that the average soil electrical resistivity responses increased with dry density, test time, and quicklime content, and were highest at low water content. Whether the dry density, quicklime content, and test time are positively or negatively related to the average subgrade reaction modulus depends on the level of the water content. Regression equations are proposed to predict the average subgrade reaction modulus and soil electrical resistivity. The tested soils’ pH, conductivity, and cation ion exchange capacity properties were directly related to the test time, water, and quicklime content. The XRD showed nearly similar X-ray diffraction peaks. The SEM analysis confirmed marked changes in the microstructure of the samples that explained the changes in electrical resistivity and subgrade reaction modulus responses. The test results show that the resistivity plate loading device efficiently assesses compacted quicklime’s stiffness and physical properties at ease and instantaneously.

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“…It is well known that the vibratory drum and underlying compacted layer form a spring-mass-dashpot system. The response measured on the roller drum changes as the layer becomes stiffer (Foroutan et al, 2020; Mazari et al, 2017; Susante and Mooney, 2008). Therefore, to evaluate the compaction quality using output-only vibration signals, it is important to extract characteristics related to the stiffness of the vibratory drum-compacted layer system from the signal.…”

Section: Introductionmentioning

confidence: 99%

A data-driven method for real-time compaction quality evaluation of a cement-stabilized base layer

Cao

Lam

et al. 2022

Advances in Structural Engineering

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Adequate and uniform compaction is essential for the safety and durability of a pavement structure. The current compaction quality control, which relies on limited spot tests data, cannot provide timely feedback about compaction quality. The main objective of this paper is to develop a novel data-driven method for compaction quality assessment of cement-stabilized base in a real-time manner. The basic idea is to consider the drum of the vibratory roller together with the underlying cement-stabilized base layer as a spring-mass-dashpot system. The compaction level of the base is connected to the stiffness of the system and to the corresponding natural frequencies. In this study, the vibration of the drum was monitored during operation. The fundamental mode natural frequency of the system at different compaction levels of the base was identified by the fast Bayesian fast Fourier transform method. The results indicate that the natural frequency of the vibratory system has a positive correlation with the degree of compaction (DOC) of the underlying cement-stabilized base layer. Therefore, a novel and practical method for on-site compaction quality assessment utilizing measured natural frequency is proposed in this paper. A data-driven classification method based on support vector machine (SVM) was developed to realize the compaction quality evaluation. The classification results show that the proposed method can recognize signal patterns corresponding to different DOCs. The proposed method combines vibration theory and machine learning to provide a technical reference for the research of continuous compaction control with vibratory rollers.

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Evaluation of Correlations between Intelligent Compaction Measurement Values and In Situ Spot Measurements

Cited by 8 publications

References 12 publications

In-situ Spot Test Measurements and Icmvs for Asphalt Pavement: Lack of Correlations and the Effect of Underlying Support

In-situ Spot Test Measurements and Icmvs for Asphalt Pavement: Lack of Correlations and the Effect of Underlying Support

Experimental Evaluation of Stiffness Properties of a Quicklime-Stabilized Clay Subgrade Using a Resistivity Plate Loading Testing Device

A data-driven method for real-time compaction quality evaluation of a cement-stabilized base layer

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