This paper introduces a complex, low-cost road pavement measurement system designed primarily for pothole and crack detection. The onboard system is composed of a GPS/INS navigation unit, an image acquisition module, and a photogrammetric and imageprocessing subsystem. Due to the use of structured light and the availability of accurate navigation data, the 3D coordinates of the road points, in ...

The determination of pavement layer stiffness is an essential step in evaluating the performance of existing road pavements and in conducting pavement design and analysis using mechanistic approaches. Over the years, several methodologies involving static, dynamic, and adaptive processes have been developed and proposed for obtaining in-situ pavement layer moduli from Falling Weight Deflectomet...

The use of municipal solid waste incineration (MSWI) bottom ash in road construction may possess a risk to the environment due to the release of e.g. salt and heavy metals. In this study, two years of leachate data from a test road built of MSWI bottom ash and crushed rock in northern Sweden were evaluated. It was found that Cu, Cr, Al, Na, and Clwere leached in higher amounts from the bottom a...

This study integrates ground spectrometry, imaging spectrometry, and in-situ pavement condition surveys for asphalt road assessment. There is strong spectral evidence for asphalt aging and deterioration processes, hence field spectra showed that asphalt aging and deterioration produce measurable changes in spectra as these surfaces undergo a transition from hydrocarbon dominated new roads to mi...

An Automated Road Maintenance Machine (ARMM) for automatically sealing pavement cracks has been developed by the University of Texas at Austin. Automating pavement crack sealing can improve safety, productivity and quality and reduce road user costs as well. Recent initial field trials of the full scale crack sealer have indicated that automated pavement crack sealing is now technically , econo...

Road pavement workers are exposed to many known carcinogens in their complex occupational environment. The study makes an attempt to investigate exposure to polycyclic aromatic hydrocarbons (PAH) from the bitumen fumes among the road pavement workers engaged in different pavement sites at Coimbatore, Tamil Nadu and to thereby determine the genotoxic effects associated with it. The study include...

Pavements are important assets to the safety and serviceability of road networks. Due to their fast deterioration and stringent municipal budgets, allocating the limited rehabilitation funds becomes a complex task. In this paper, an efficient heuristic approach for fund allocation has been introduced. After prioritizing pavements based on different criteria, such as AADT, pavement IRI, and road...

Concrete blocks are an alternative surface coating for road construction made of a mixture cement, filler and water. The that will be redesigned with pavement thickness is the DR. Moh. Hatta section Pasar Baru - Gate Unand Padang. This has uphill contour so conventional roads unable to withstand flow water falling down, causing puddles can damage construction. Pavement planning paving block on ...

Permeable concrete is a new type of pavement material, which can effectively improve the urban flood discharge system, and great significance to construction sponge city. In order optimize use effect permeable application value in road engineering, combination rubber aggregate proposed, mix ratio mixture material designed, applied engineering Hunan Province, its comprehensive performance analyz...

This article describes the design and construction of structural rehabilitation bituminous pavement four roundabouts by means arrangement a 12 cm layer vibrated concrete with fibres very close joints (technique known as "thin whitetopping"). The roundabouts, which belong to N-II National Road it passes through La Jonquera (Spain), are subject high levels heavy vehicle traffic (IMDp > 4,000 v...