Visualization and quantification of soil laboratory impact compaction
As important methods to guide the field soil compaction, the standard and modified Proctor tests for laboratory compaction have remained unchanged for decades, which should be improved to better understand the compaction process and the properties of soils. In this study, an accelerometer was instal...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-04-01
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| Series: | Journal of Rock Mechanics and Geotechnical Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1674775521000950 |
| _version_ | 1819157713287905280 |
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| author | Wei Hu Pawel Polaczyk Hongren Gong Yuetan Ma Baoshan Huang |
| author_facet | Wei Hu Pawel Polaczyk Hongren Gong Yuetan Ma Baoshan Huang |
| author_sort | Wei Hu |
| collection | DOAJ |
| description | As important methods to guide the field soil compaction, the standard and modified Proctor tests for laboratory compaction have remained unchanged for decades, which should be improved to better understand the compaction process and the properties of soils. In this study, an accelerometer was installed on a Marshall impact compactor to capture the dynamic response of three types of soils during compaction. The experimental test results indicated that the acceleration curve for each blow gradually evolved to a stable pattern following the progress of compaction, and the impact and gyratory locking points were linearly related with coefficient of determination R2 equal to 0.59. The impact compaction curve could be further constructed by filtering the structural resonance, which can be used to quantify the compactability of soil materials. Although each type of soil had a unique set of compaction curves, the slope and value of compaction curve altered accordingly as the moisture content changed for the same soil. In addition, the average acceleration value at the final compaction stage could serve as the target value of soil stiffness. |
| first_indexed | 2024-12-22T16:13:08Z |
| format | Article |
| id | doaj.art-94029f179a004400b1d05dd152124891 |
| institution | Directory Open Access Journal |
| issn | 1674-7755 |
| language | English |
| last_indexed | 2024-12-22T16:13:08Z |
| publishDate | 2022-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Rock Mechanics and Geotechnical Engineering |
| spelling | doaj.art-94029f179a004400b1d05dd1521248912022-12-21T18:20:25ZengElsevierJournal of Rock Mechanics and Geotechnical Engineering1674-77552022-04-01142616624Visualization and quantification of soil laboratory impact compactionWei Hu0Pawel Polaczyk1Hongren Gong2Yuetan Ma3Baoshan Huang4Department of Civil and Environmental Engineering, University of Tennessee, Knoxville, 851 Neyland Dr, Knoxville, TN, 37996, USADepartment of Civil and Environmental Engineering, University of Tennessee, Knoxville, 851 Neyland Dr, Knoxville, TN, 37996, USAKey Laboratory of Road and Traffic Engineering of Ministry of Education, Tongji University, Shanghai, 201804, ChinaDepartment of Civil and Environmental Engineering, University of Tennessee, Knoxville, 851 Neyland Dr, Knoxville, TN, 37996, USADepartment of Civil and Environmental Engineering, University of Tennessee, Knoxville, 851 Neyland Dr, Knoxville, TN, 37996, USA; Corresponding author.As important methods to guide the field soil compaction, the standard and modified Proctor tests for laboratory compaction have remained unchanged for decades, which should be improved to better understand the compaction process and the properties of soils. In this study, an accelerometer was installed on a Marshall impact compactor to capture the dynamic response of three types of soils during compaction. The experimental test results indicated that the acceleration curve for each blow gradually evolved to a stable pattern following the progress of compaction, and the impact and gyratory locking points were linearly related with coefficient of determination R2 equal to 0.59. The impact compaction curve could be further constructed by filtering the structural resonance, which can be used to quantify the compactability of soil materials. Although each type of soil had a unique set of compaction curves, the slope and value of compaction curve altered accordingly as the moisture content changed for the same soil. In addition, the average acceleration value at the final compaction stage could serve as the target value of soil stiffness.http://www.sciencedirect.com/science/article/pii/S1674775521000950Impact compactionSoil compactionLocking pointAccelerometerDynamic response |
| spellingShingle | Wei Hu Pawel Polaczyk Hongren Gong Yuetan Ma Baoshan Huang Visualization and quantification of soil laboratory impact compaction Journal of Rock Mechanics and Geotechnical Engineering Impact compaction Soil compaction Locking point Accelerometer Dynamic response |
| title | Visualization and quantification of soil laboratory impact compaction |
| title_full | Visualization and quantification of soil laboratory impact compaction |
| title_fullStr | Visualization and quantification of soil laboratory impact compaction |
| title_full_unstemmed | Visualization and quantification of soil laboratory impact compaction |
| title_short | Visualization and quantification of soil laboratory impact compaction |
| title_sort | visualization and quantification of soil laboratory impact compaction |
| topic | Impact compaction Soil compaction Locking point Accelerometer Dynamic response |
| url | http://www.sciencedirect.com/science/article/pii/S1674775521000950 |
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