resilient modulus of pavement materials is a key property required for the pavement thickness design. this paper describes the results of an experimental study on the effects of temperature and loading frequency on the resilient modulus of a sbs polymer modified asphalt concrete under dry and saturated conditions. dynamic creep tests were conducted on dry and saturated specimens of the mixture ...

Pavement condition evaluation is a significant part of a good pavement management system for effective maintenance, rehabilitation, and reconstruction decision-making. One of the key components of pavement condition evaluation is the quantification of pavement distresses data. Cracking is the main form of early pavement distresses. Cracking of pavement affects road condition, driving comfort, t...

Concrete pavements located in cold climates have been experiencing premature joint deterioration. Entrapment of moisture in the joints saturates the surrounding concrete, rendering it susceptible to freeze–thaw damage. To identify and to isolate the variables that might be causing this localized deterioration, concrete cores were obtained from deteriorated and non-deteriorated sections of US 35...

The degradation of concrete pavements is often controlled by the transport of a deleterious species (chloride or sulfate ions, or water in the case of freeze/thaw) into the concrete. With this in mind, a three-year research project, funded by the Federal Highway Administration, has culminated in the development of sorptivity-based service life models for concrete pavements and bridge decks. To ...

Remaining life is an important indicator of pavement residual effective service time and directly related to maintenance decision-making with limited funds. This paper proposes a fast non-destructive model predict the remaining rigid PCC (Portland cement concrete) pavement, or without asphalt overlay. Firstly, was constructed according current Chinese design specifications for concrete integrat...

Roads are transportation infrastructure used by the Indonesian people to carry out daily mobilization activities so that volume of vehicles pass through these roads affects their capacity and carrying capacity. Along with developments in North Barito Regency, one which is road Lemo Village, it has become an alternative section capital city Central Kalimantan Province, Palangka Raya.Planning for...

A slab of concrete harnesses kinetic energy whenever it is stepped on. This energy, created by 5 millimeters of flex in the material, is then either stored by lithium polymer batteries contained within the slabs or transmitted immediately to streetlights or other electronics located close by. The current model, made from stainless steel, recycled car tires and recycled aluminum, also includes a...

A flatbed scanner is used to collect a digital image of a polished cross-section through a concrete pavement. Image processing software is used to classify each pixel in the image as either cement paste, aggregate, or air void. The distance to the nearest air void is calculated for each pixel classified as cement paste using an accumulated cost surface algorithm. The presence of aggregate is ac...

Over the past decade, the Texas Department of Transportation (TxDOT) focused research efforts on improving hot mix asphalt concrete (HMAC) mix design to preclude rutting in the early life of pavements. However, these rut-resistant stiff mixtures may be susceptible to long-term fatigue cracking due to oxidative aging. This project completed initial development of an HMAC mixture fatigue design a...