In this paper, annoyance ratings from traffic noise recorded on cobblestones, dense asphalt, and open asphalt rubber pavements are assessed with regard to car speeds and traffic densities. It was found that cobblestones pavements are the most annoying; also while open asphalt rubber pavement imposes less annoyance than dense asphalt it is not significantly different. Higher car speeds always le...

Putting Research Into Practice Page 10 The National Center for Asphalt Technology (NCAT) has just completed a National Cooperative Highway Research Program (NCHRP) Project: NCHRP 9-11, “Segregation in Hot Mix Asphalt Pavements.” Dr. Mary Stroup-Gardiner was the principal investigator on this project. Segregation has historically been defined to mean localized areas of coarse materials in some a...

Pavement maintenance is a key concern for pavement management authority. Countries (especially developing countries) are facing severe funding challenges regarding schemes. The existing methods goal-specific and lack integration of various indicators that significant low-cost PMSs. Thus, this paper investigates the possible defects may occur in flexible pavements as well relationships between d...

It is a well-recognized fact that our pavement design procedures are inadequate in general and seriously lacking in many particulars. The fact that this statement can be applied on a county, state or national basis is little consolation to those in Indiana who must design and build pavements, for ever-changing traffic conditions, in such mileage and at such unit costs compared to the funds avai...

The Federal Aviation Administration (FAA) has undertaken a major hot mix asphalt (HMA) research program for airfield pavements. The Airfield Asphalt Pavement Technology Program (AAPTP) was established in fiscal year (FY) 2004 through a cooperative agreement between the FAA and Auburn University. The program will be funded by the FAA and will be administered by Auburn University. A t o t a l o f...

IN TR O D U C TIO N The fact that the compressive strength of a soil is a function of the time required to reach the failure load has long been recognized. How­ ever, this area of soil mechanics has not been extensively explored and much work remains to be done, in order that the effects of this phenome­ non can be properly evaluated. The specific areas where this information would be of the gr...

Increasing environmental awareness has led to a great research effort towards the formulation of increasingly sustainable pavements, mainly by developing bituminous mixtures incorporating waste materials. Furthermore, some materials have been proved be useful for enhancing performance road bitumen and products, so their use is potential solution ensuring environmental, economic, also technical ...

Comment Over 10000 claims for compensation for injuries sustained as a direct result of tripping over broken, uneven, or loose paving stones were made against local authorities in England and Wales in 1987, and this figure seems to be rising (A Walker, Municipal Mutual Insurance Company, personal communication). The number of patients seen in fracture clinics, however, suggests that far more pe...