IP0073 - EFFICIENT INFRASTRUCTURE MANAGEMENT. RESILIENT PAVEMENTS. HIGHWAYS A3 AND A31 IN CUENCA (SPAIN) (.pdf - 143Ko)

Autovía Conquense (100% FCC Construcción) is the company that manages the A3 and A31 highways concession in Cuenca, Spain. The concession comprises of 100 km of flexible pavements and 36 km of rigid pavements, subjected to the harsh conditions of a continental climate, with cold winters and very hot summers. Additionally, traffic volume is characterized by notable seasonal peaks, as they are highways [...]

IP0301 - Effect of winter road maintenance on the asphalt road surface - experience in Slovakia and the Czech Republic (.pdf - 182Ko)

The properties of asphalt mixtures and the quality of their design are the key factors for their service life and durability in the pavement structure. This article deals with the influence of winter maintenance (using chemical de-icing salt) on asphalt pavements. For practical verification, asphalt mixtures standardly used in Slovakia and the Czech Republic in the surface course - asphalt concrete [...]

IP0363 - Use of Non-Potable Water in Pavement Construction: A Laboratory Study using Treated Wastewater (.pdf - 40Ko)

Construction processes rely on the use of potable water. In road construction, the moisture content (amount of water), is an important factor that affects the density of a road material. An average of 50 litres of potable water per cubic meter of granular pavement material is required for road compaction. Given that South Africa has a network of over 22 000 km of road, there is a need to re-evaluate [...]

IP0170 - Mechanistic Analysis of Treated Subgrade soils at Freezing Temperatures (.pdf - 10Ko)

Calcium-based stabilizing agents such as cement and lime have been extensively used to improve the engineering properties of base and subgrade layers of pavement systems. Recently, polymers and chemical stabilizers have become popular due to cost efficiency, ease of application, and fast curing times. In this study, different laboratory tests are performed to determine the engineering properties of [...]

IP0173 - Incorporating temperature based finite element approach in effectively assessing the structural capacity of flexible pavements (.pdf - 57Ko)

Deflection based Non-Destructive Testing (NDT)s are utilized to assess the structural conditions of pavement sections in various transportation agencies. One popular deflection-based analysis method is the falling weight deflectometer (FWD), which has been widely utilized in multiple temperature locations. This study accounts for the actual FWD testing device simulation with a finite element approach [...]

IP0109 - Pavement structure compatible for Mongolia (.pdf - 2.0Mo)

The study on the possibility of creating a suitable pavement structure for the Mongolian environment has been summarized below. Methodology for determining soil design parameters of Mongolia based on their moist content to estimate embankment stability was studied and found the possibility of creating suitable pavement structure has been presented in one of my research works for Ph.D. studies. [...]

IP0319 - Sustainable, resilient asphalt roads and the consequences for asset management (.pdf - 2.6Mo)

The topic of environmental protection and recycled asphalt in road construction is not new. Recycled asphalt has already been used successfully for many decades for new road construction or maintenance. Why something new now? Against the background of increasingly dwindling natural resources, the question of reuse is becoming more and more urgent. At the same time, more and more asphalt pavements [...]

IP0176 - Development of a Pavement Adaptation Support Tool (PAST) in view of Climate Change in Canada (.pdf - 93Ko)

In light of climate change, pavements in Canada are now more than ever exposed to extreme environments. Canada is warming about double the global rate, and thus it is crucial to account for the effect of climatic factors on pavement performance as results of projected climate changes. There is a lack of climate-change oriented tools and numerically robust adaptation algorithms for predicting pavement [...]

IP0192 - Performance of Recycled Base for Road Resilience (.pdf - 238Ko)

Currently, the scarcity of natural resource becomes national and global concerns. Thailand is one of many countries that have been encountering this situation over decades. Large amount of natural rock, aggregate, sand, and lateritic soil from quarries and buried pits have been utilized in the road construction industries for engineered pavement structure in accordance with the local highway standard [...]

IP0118 - Estimation of Causes of Asphalt Pavement Distresses under Severe Climate Conditions in Mongolia (.pdf - 63Ko)

Mongolia is located at about 42-52 degrees north latitude and has an area of about 1.57 million square km at an altitude of more than 1,000 meter. Mongolia has and manages 49,250km length of road network including 4,286km of the Asian highways. Mongolia has a continental climate with long and frigid winters and short summers. Air temperatures sometimes drop to -40 degrees Celsius in winter, on the [...]

IP0361 - Dynamics of sediment delivery and runoff coefficients as determinants of unpaved roads deterioration by rainfall erosion (.pdf - 83Ko)

Abstract: Erosion of soils is increasingly becoming a pertinent challenge to the sustainability and serviceability of unpaved roads. About 70% of the world road network is unpaved and critically threatened by water erosion processes which lead to soil loss and formation of erosion features such rills and ephemeral gullies that hamper serviceability of unpaved road in rainy seasons. To investigate [...]

IP0178 - Program Efforts towards Designing More Resilient Pavements (.pdf - 542Ko)

Pavement resilience is becoming an increasing critical consideration for highway and transportation engineers. The U.S. Department of Transportation Strategic Plan for FY 2018-2022 identifies the development and deployment of technological tools as a key strategy to improve the durability and resilience of the Nation’s transportation infrastructure. Furthermore, indications from the recent Appropriation [...]

IP0211 - Proactive Pothole Patching and Prevention for More Resilient Roads (.pdf - 751Ko)

Snow and ice control is commonly perceived as the primary function of winter road service. However, there is another major activity that is just as important; the prevention and patching of potholes. Potholes hinder the flow of traffic, cause considerable damage to vehicles, contribute to collisions, and are a hazard to pedestrians and cyclists. According to the American Automobile Association, the [...]

IP0212 - Modification de l'asphalte avec un pneu en caoutchouc émietté (.pdf - 824Ko)

Roads are considered one of the most important elements of infrastructure and they play an essential role in our daily lives. Over the years, road structures have deteriorated more rapidly due to increases in service traffic density, axle loading and low maintenance services. To minimize the damage of pavement surface, increase resilience and durability of flexible pavement, this research works suggest [...]

IP0312 - Amélioration de la résilience des chaussées grâce à une surveillance continue des vibrations (.pdf - 106Ko)

Almost all road administrations around the world conduct road condition monitorings periodically to gather information about the ride comfort and the development of substance indicators such as cracks and potholes. The periods vary, but cover mostly timeframes between 3 and 5 years. Preparation, conduction and evaluation is a time consuming effort with each campaign. Especially in emergencies or as [...]

IP0342 - Dégâts hivernaux sur les chaussées routières (.pdf - 481Ko)

Lors de l’hiver 2009-2010, de nombreuses dégradations sont apparues sur les réseaux routiers du nord-est de la France. Suite à cet épisode, différents rapports d’experts ont été rédigés, tentant d’apporter des explications au phénomène constaté. Un suivi particulier de ce qui a été appelé « dégâts hivernaux » (décollement par plaques, nids de poule, faïençage, arrachements, [...]

IP0165 - DÉVELOPPEMENT DU REVÊTEMENT D'ASPHALTE EN CE QUI CONCERNE LES PROPRIÉTÉS THERMO-PHYSIQUES ET PHOTOMÉTRIQUES DU MATÉRIAU (.pdf - 550Ko)

Analyses of climate simulations carried out by the German Weather Service to derive future climate boundary conditions have shown that there will be a climatic warming in Germany in the near future. The intensity of the increase will vary regionally and will increase once more in the distant future. In order to counteract the negative consequences of these climatic changes, material adaptations with [...]

IP0104 - ÉTUDE COMPARATIVE POUR LA STABILISATION DES REVÊTEMENTS ROUTIERS GRANULAIRES AVEC DES STABILISATEURS CHIMIQUES DANS LA VILLE DE PUNTA ARENAS. (.pdf - 32Ko)

The increase in vehicular traffic on unpaved roads, in the urban extension area of Punta Arenas, Magallanes and Chilean Antarctica region, directly influences the need for maintenance for the comfort of the community, remaining as the entity in charge of carry out road repairs, the Municipality of Punta Arenas, many times exceeded in its capacity for work. The need to reduce the periodicity of maintenance [...]

IP0068 - ÉTUDE DES DÉGÂTS SUR L’ASPHALTE POREUX ET ANALYSE DES COÛTS DU CYCLE DE VIE EN CAS D’UTILISATION DE SMA HAUTE PERFORMANCE DANS LES RÉGIONS FROIDES ET ENNEIGÉES DU JAPON (.pdf - 61Ko)

In Hokkaido—one of Japan’s snowy, cold regions—national highways had traditionally been paved with porous asphalt in an effort to improve road safety during the winter and in rainy conditions. In fact, porous asphalt pavement has proven effective in increasing driving safety. However, porous asphalt has been found to have durability issues. Japan’s snowy, cold regions receive some of the heaviest [...]

IP0193 - Étude du comportement d'autoréparation des liants bitumineux modifiés par des nano-argiles. (.pdf - 58Ko)

In light of climate risks and increasing traffic loads in Canada, flexible pavements are more than ever subject to exacerbated deteriorations and reduced service lives. In response to these challenges, asphalt binder modification with nanomaterials is the prominent technology to enhance the rheological properties of composites. This study investigates the intrinsic healing behavior of nanoclay modified [...]

IP0240 - La surcharge, un facteur essentiel de la résilience des chaussées (.pdf - 263Ko)

La résilience des chaussées fait généralement référence à leur capacité à retrouver leur fonctionnalité après un événement extraordinaire, généralement associé à des phénomènes météorologiques extrêmes, à des tremblements de terre de forte intensité et, dans certains cas, à des actions terroristes. Dans le réseau routier du Mexique et, peut-être, dans d'autres pays, il existe [...]

IP0218 - Le suivi du gel et du dégel dans les chaussées au Québec (.pdf - 1.7Mo)

Le ministère des Transports du Québec (MTQ) décrète une période de restriction des charges des véhicules lourds à la fin de chaque hiver en raison de l’affaiblissement structural des chaussées lors du dégel. Lors de celle-ci, les limites de charges permises pour les véhicules lourds sont réduites de manière à protéger le réseau routier dont la capacité portante est plus faible. La [...]

IP0155 - Prime de charges hivernales et endommagement des chaussées (.pdf - 1000Ko)

Climatic conditions have a tremendous impact on flexible pavement response and performance. In cold climates, seasonal frost penetration in the layered system causes an important increase in its bearing capacity. Pavement strengthening in the winter period is the main reason associated with the choice of some agencies around the world to allow winter premiums for the transportation industry. Nevertheless, [...]

IP0292 - Recherche et application de nouvelles technologies et de nouveaux équipements d'entretien des routes dans les zones froides (.pdf - 79Ko)

In the cold area of northern China, due to its complex geological conditions? bad weather conditions and large temperature difference between day and night, road construction and maintenance has attracted much attention. In order to solve the crack problem of semi-rigid base asphalt pavement in cold area, the method of comparing the test with ordinary mixing and vibration mixing was carried out, the [...]

IP0244 - RECONSTRUCTION D'UNE VIEILLE CHAUSSÉE RIGIDE POUR AUGMENTER LA RÉSILIENCE DU POINT DE VUE DE LA PERFORMANCE DE LA CHAUSSÉE ET DE LA RÉSISTANCE AU GEL (.pdf - 44Ko)

In the paper is documented the case study of more successful implementations in Slovakia of a hydraulically bound base layer with robust final thickness of 40 cm, made by technology of cold recycling in situ (in the high quality of equivalent CBGM C5/6), called from the influence in the pavement structure point of view as "Homogenisation Layer", with abbreviation "HMG". The paper consists of following [...]

IP0377 - UTILISATION DE POLYMÈRES DE NOUVELLE TECHNOLOGIE DANS LES CHAUSSÉES POUR STABILISER LES SOLS DU SITE (.pdf - 59Ko)

The consumption of natural resources due to the maintenance or construction of a road is considerable. Besides, the impact on the environment is disturbing. By using native soil it is possible to obtain a durable and resilient pavement able to attend to the demands of users and climate change, considerably reducing the exploitation of banks and hauling, as well as CO2 emissions. Those soils that do [...]