http://iaeme.com/Home/journal/IJCIET 531 [email protected] International Journal of Civil Engineering and Technology (IJCIET) Volume 10, Issue 12, December 2019, pp. 531-544, Article ID: IJCIET_10_12_052 Available online at http://iaeme.com/Home/issue/IJCIET?Volume=10&Issue=12 ISSN Print: 0976-6308 and ISSN Online: 0976-6316 © IAEME Publication STRUCTURAL PROPERTIES EVALUATION FOR FLEXIBLE PAVEMENT USING NON DESTRUCTIVE TESTING GPR LWD AND Vishal Kumar Narnoli Department of Civil Engineering, National Institute of Technology Patna, Patna, Bihar, India Sanjeev Kumar Suman Department of Civil Engineering, National Institute of Technology Patna, Patna, Bihar, India ABSTRACT The structural properties evaluation for in-service road is layer thickness, elastic modulus and stiffness value. The structural capacity of pavement, measured by deflection testing, is an important parameter for maintenance and rehabilitation of existing pavement. The increase or decrease in deflection of pavement layer indicates corresponding decrease or increase in structural capacity of pavement layers. In-situ investigation of flexible pavement sections was carried out using two non-destructive testing devices (NDT); the Light Weight Deflectometer (LWD) and Ground Penetrating Radar (GPR). The main motivation behind the research is to use the LWD and GPR over time-consuming, laborious, and unsafe destructive testing such as coring and costly falling weight deflectometer testing, as a support tool for pavement maintenance and rehabilitation decision. The analysis of GPR data showed lower accuracy in layer thickness prediction for appreciably deteriorated pavements but higher accuracy was found for newly constructed pavements. Elastic modulus value obtained using LWD showed high variability on pavement section with and without distresses. To look over the combined effect of thickness and elastic modulus value a single parameter is introduced known as stiffness that reflect the structural capacity of the pavement. Stiffness value shows a trend for good and poor road condition. However, sufficient data is required to create a limiting vale for stiffness related to pavement condition. Keywords: GPR, LWD, Deflection, Composite modulus, Stiffness, Pavement condition. Cite this Article: Vishal Kumar Narnoli, Sanjeev Kumar Suman Structural Properties , Evaluation for Flexible Pavement Using Non Destructive Testing GPR and LWD. International Journal of Civil Engineering and Technology 10(12), 2019, 531-544. http://iaeme.com/Home/issue/IJCIET?Volume=10&Issue=12
STRUCTURAL PROPERTIES EVALUATION FOR FLEXIBLE PAVEMENT USING NON DESTRUCTIVE TESTING GPR AND LWD
Jun 28, 2023
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