Hu, W; Shu, X; Jia, X and Huang, B (2017) Recommendations on intelligent compaction parameters for asphalt resurfacing quality evaluation. Journal of Construction Engineering and Management, 143(9): 04017065, ISSN 0733-9364
Abstract
Intelligent compaction (IC) technology provides an innovative way for continuously and instantaneously evaluating asphalt compaction quality. However, there is a lack of well-accepted standard as to what IC parameters should be used and how they should be interpreted during the compaction. In this study, by analyzing IC parameters in six asphalt resurfacing projects in Tennessee, the feasibility of adopting IC parameters in IC specifications for the asphalt compaction quality was evaluated. Comprehensive laboratory tests were performed on the field cores, including bulk specific gravity, permeability, and indirect tensile (IDT) strength. Results indicated that there is linear relationship among the laboratory test results. Although there were no significant relationships between the final compaction meter value (CMV) and the core results, the difference in 1/CMV between two passes in one project showed significant correlations with the laboratory results. Other IC parameters, especially the starting surface temperature of the breakdown roller, also had a strong correlation with the core density. Based on the results from this study, it is recommended that three IC parameters - the difference in 1/CMV, the starting surface temperature of compaction (>110°C), and the total number of passes (>2 passes) - be adopted for evaluating the compaction quality of the resurfacing asphalt.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | compaction meter value; compaction quality; construction materials and methods; indirect tensile strength; intelligent compaction |
| Index terms: | surface temperature, specification, tensile strength, laboratory, permeability, density, construction material |
| Subjects: | building materials, research management, analytical methods, contractual condition, thermal systems, material properties and characteristics |
| Topics: | Construction Materials, Engineering Principles, Urban Studies, Research Practice, Contract Administration |
| Descriptive scope: | 2 PC |
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