Model Korelasi Empiris antara Paramater Evd, CBR dan Kepadatan Tanah untuk Estimasi Kuat Dukung Tanah Dasar
DOI:
https://doi.org/10.23960/rekrjits.v30i2.152Keywords:
LWD, CBR, Kepadatan Tanah Subgrade, korelasi empiris, kuat dukung tanahAbstract
Assessing the subgrade bearing capacity is essential in the planning and building of road infrastructure. Traditional techniques, including the California Bearing Ratio (CBR) and soil density assessments, are frequently time-intensive and invasive. The utilization of a Light Weight Deflectometer (LWD) provides a rapid and effective non-destructive testing option. The relationship between the LWD modulus of elasticity (Evd), field CBR, and soil density necessitates additional refinement for specific local soil conditions.
This study seeks to establish an empirical correlation model linking Evd (LWD), field CBR, and soil density to estimate subgrade bearing strength. Assessments were performed at many road construction locations featuring diverse soil compositions and density variations. Linear and nonlinear regression analysis were employed to derive the optimal correlation model.
The findings demonstrate a robust correlation between Evd and CBR, with a coefficient of determination (R²) over 0.85 for the optimal model. Soil density greatly enhances Evd and CBR values. The resultant empirical model serves as an effective method for the quick assessment of subgrade bearing strength.
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References
AASHTO.,: Guide for Design of Pavement Structures American Association of State Highway and Transportation Officials, Washington, DC, 2002.
Makwana, P., and Kumar, R.,: Correlative Study of LWD, DCP and CBR for subgrade, International Journal of Engineering Trends and Technology (IJETT), Volume 67 Issue 9, 89-98, 2019.
Kongkitkul, W., Saisawang, T., Thitithavoranan, P., Kaewluan, P., and Posribink, T.,: Correlations between the Surface Stiffness Evaluated by Lightweight Deflectometer and Degree of Compaction, Tunneling and Underground Construction GSP 242, 65-75, ASCE 2014.
Kuttah, D.,: Strong correlation between the laboratory dynamic CBR and the compaction characteristics of sandy soil, International Journal of Geo-Engineering, 10, 7, 2019.
Erlingsson, S.,: On forecasting the resilient modulus from the CBR value of granular bases. Road Materials and Pavement Design, 8, 4, 783-797, 2007.
George, V., Rao, N. C., and Shivashankar, R.,: PFWD, DCP and CBR correlations for evaluation of lateritic subgrades. International Journal of Pavement Engineering, 10, 3, 189-199, 2009.
Guzzarlapudi, S.D., Adigopula, V.K., and Kumar, R., : Comparative studies of lightweight deflectometer and Benkelman beam deflectometer in low volume roads, 3, 5, 438-447, 2016.
Katte, V.Y., Mfoyet, S.M., Manefouet, B., Wouatong, A.S.L., and Bezeng, L.A.,: Correlation of California Bearing Ratio (CBR) Value with Soil Properties of Road Subgrade Soil, Geotech Geol Eng, Volume 37, 217–234, 2019.
ASTM E2835-11.,: Standard Test Method for Measuring Deflections Using a Portable Impulse Plate Load Test Device, ASTM International, West Conshohocken, PA, 2011.
Lacey, D., Look, B., and Marks, D.,: Use of the Light Falling Weight Deflectometer (LFWD) as a Site Investigation Tool for Residual Soils and Weak Rock, Geotechnical and Geophysical Site Characterisation 5 – Lehane, Acosta-Martínez & Kelly (Eds), 1009-1104, 2016.
Lange, V.S., Gupta S., Patni S., and Shahare P.,: Relationship Between Field CBR and Dynamic Deflection Modulus for BC Soil, International Journal of Civil Engineering and Technology (IJCIET), 8, 3, 2017, 546-553.
Makwana P., and Kumar R.: LWD Induced Flexible Pavement Rehabilitation Strategies. Lambert Academic Publishing, Germany, 2014
ASTM E2583-07.,: Standard Test Method for Measuring Deflections with a Light Weight Deflectometer (LWD), ASTM, International, West Conshohocken, PA, 2011.
Nazzal, M.D., Abu-Farsakh, M.Y., Alshibli, K. & Mohammad, L., : Evaluating the light falling weight deflectometer device for in situ measurement of elastic modulus of pavement layers, Journal of the Transportation Research Board, 2016, 13–22, 2007.
Singh, D., Jha, J.N., and Gill, K.S., : Strength Evaluation of Soil Subgrade Using In-Situ Tests, Civil Engineering and Architecture 4, 6, 201-212, 2016,
DOI: 10.13189/cea.2016.040601.
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