Field data to investigate the impact of initial air-voids on the performance of bituminous pavements – a case study
Source abstract
Abstract
The aim of this study was to examine the relationship between initial compaction and pavement performance of a road with low-volume traffic. Data was collected from Telangana State in India. Binder was extracted from the field core samples after measuring the volumetric properties. The binder rheology was then compared with laboratory-aged VG30 bitumen. Higher air-voids in the newly constructed bituminous surface have caused binder ageing and raveling. Flaky, water-absorptive trap-aggregate worsened the problem. The fine aggregate and bitumen were stuck to the rubber-coated steel wheel in the Hamburg wheel tracking study indicating raveling. Binder reduction due to raveling was shown by slicing 30 mm field cores into two sub-layers; the bitumen content was reduced in the top slice (5.3% to 4.3%) and not in the bottom. For roads with low-volume traffic, a target density of 94% Gmm is recommended instead of the usual 92% to minimize binder ageing and raveling.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Asphalt Pavement Performance Evaluation · Infrastructure Maintenance and Monitoring · High voltage insulation and dielectric phenomena
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Civil Engineering, Birla Institute of Technology and Science (BITS) Pilani, Hyderabad, India
Engineer-in-Chief, State Roads & Core Road Network, Roads and Buildings Department, Telangana State
Funding
Office of the Engineer-in-Chief, Roads & Buildings (R&B) Department
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