<abstract xmlns="http://www.w3.org/1999/xhtml"> The paper gives an overview of concrete noise barrier application in several EU countries and in Croatia. It describes a process of introducing different noise protection solutions on Croatian market in the phase of intensive motorway construction in recent years. Namely, an extensive motorway network has been constructed in Croatia in the last 10 years. Following the process of motorway construction, noise protection walls have also been erected. Usage of different building materials and installation processes as well as variations in building expenditures has led to a comparative analysis of several types of noise protection solutions (expanded clay, wood fibre) including a new eco-innovative product RUCONBAR, which incorporates rubber granules from recycled waste tyres to form a porous noise absorptive layer.</abstract>

sc. novice, MCE, University of Zagreb, Faculty of Civil Engineering, Fra Andrije Kačića-Miošića 26, 10 000 Zagreb, Croatia

assistant, MCE, University of Zagreb, Faculty of Civil Engineering, Fra Andrije Kačića-Miošića 26, 10 000 Zagreb, Croatia

prof., PhdCE, University of Zagreb, Faculty of Civil Engineering, Fra Andrije Kačića-Miošića 26, 10 000 Zagreb, Croatia

Croatian Experience in Road Traffic Noise Management - Concrete Noise Barriers

<abstract xmlns="http://www.w3.org/1999/xhtml"> Road bridges with steel arches are used efficiently for medium and large spans. These solutions show advantages determined by the arches geometry, by the number and distributions of hangers and by the form and type of the arches bracing system. The appearance of the welding as standard connection procedure for steel bridges, for road bridge decks two solutions are mainly used: - the solution with a concrete slab acting together with the stringers and cross beams (the composite solution); - the solution with orthotropic deck (the orthotropic deck consists in a network formed by the continuous longitudinal stiffeners and cross beams connected at the upper part by a steel plate). In this paper a comparative study of the strength and fatigue checks performed on the new road bridge over river Argeşel near Mioveni in Argeş county is presented. The results are obtained using the Romanian standards STAS 1844-75 and SR 1911-1998 and the European norms SR EN 1990, SR EN 1993 and SR EN 1994. The deck was designed with two parallel steel arches, which are sustaining through vertical hangers a concrete slab connected with steel girders at the way level. The aim of the paper is to outcome the safety factors obtained from checks performed on steel hangers using the Romanian standards with respect with those obtained using Eurocodes.</abstract>

Design of the New Arch Bridge at Mioveni

<abstract xmlns="http://www.w3.org/1999/xhtml"> Thessaloniki is the second largest city in Greece and its transportation system (development and operation) is hampered by the city’s geographical position and surrounding relief. Specifically, the city has been developed and expanded through the years along the coastline, the sea boundary on the southwest, and a second physical boundary, a forest, on the east side. The Thessaloniki Ring Road (divided in western and eastern part) was constructed in the early ‘90s, in order to relief the road network of the city centre from the transit traffic and confront the gradually increasing congestion. The absence of alternatives other than road transport and the increase of car ownership over the years led to an increase of motorized traffic. So even that this Ring Road had been designed to serve 30,000 vehicles daily it became to serve more than triple traffic just before the impacts of the economic crisis on transport and mobility have been made visible. The Western Internal Ring Road of Thessaloniki (<bold>WIRRT</bold>) has length of 8.4km. It has three lanes per direction separated by a median and no emergency lanes. The traffic increase and moreover the existence of eight at grade intersections along the WIRRT degrade the provided level of service. For the elimination of these intersections an upgrade project is underway for implementation that includes the construction of five grade separated intersections and several interventions on the adjacent road network. This paper presents in brief the methodology and the results of the project’s Cost-Benefit Analysis, which assessed the expected socioeconomic benefits, emerging mainly from minimising the delays for users due to the elimination of the at grade signalised intersections.</abstract>

PhD Transport Engineer, Researcher, Department of Transportation & Hydraulics Engineering, Faculty of Rural & Surveying Engineering School of Technology, Aristotle University of Thessaloniki, GR-541 24 Thessaloniki, Greece, Tel: +30 2310 996126, Fax: +30 2310 996030

PhD Transport Engineer (City Logistics), Researcher, Department of Transportation & Hydraulics Engineering, Faculty of Rural & Surveying Engineering School of Technology, Aristotle University of Thessaloniki, GR-541 24 Thessaloniki, Greece, Tel: +30 2310 996126, Fax: +30 2310 996030

Quantifying the Benefits from a Major Infrastructure Improvement: The Case of Thessaloniki Western Ring Road Upgrade to Eliminate at Grade Signalised Intersections

<abstract xmlns="http://www.w3.org/1999/xhtml"> The benefits of WMA technologies include reduced fuel usage and emissions in support of sustainable development, improved field compaction, which can facilitate longer haul distances and cool weather pavement, and better working conditions. Since this is a relatively new technology, it is necessary to determine the behavior and the performances of this type of asphalt mixture depending on additive percent. These technologies tend to reduce the viscosity of the asphalt and provide for the complete coating of aggregates at lower temperatures. WMA is produced at temperatures 20 to 30°C lower than typical hot-mix asphalt (HMA). The paper presents the results obtained in the Road Laboratory of Technical University of Civil Engineering Bucharest on an asphalt mixture with fibers (MASF16) prepared according to the “warm mix” technology with chemical additive. Different percent of additive are used in laboratory to draw up the “master curves” of asphalt mixture obtained by 4PB-PR stiffness modulus results.</abstract>

Assoc. Prof. Dr. Eng., Technical University of Civil Engineering Bucharest, Department of Roads, Railways and Construction Materials

Lecturer Dr. Eng., Technical University of Civil Engineering Bucharest, Department of Roads, Railways and Construction Materials

Additive Percent Influence on “Warm Mix” Behavior

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Romanian Journal of Transport Infrastructure

Through its appearance (twice per year) magazine aims to be a high-quality scientific source of information for researchers, academics, engineers, practitioners, policy – makers, PhDs, students and anyone interested in various issues related to transport infrastructure: roads, bridges, railways and geotechnics.  The aim of the journal is to reflect the results of fundamental and applied research at a high level, maintained through a rigorous peer review performed by specialists, well known in the field, both at national and international level.  Romanian Journal of Transport Infrastructure (RJTI) involves the design, manufacture and maintenance of all categories of roads, airports, bridges, railways, tunnels and all types of transportation mean. The journal deals also with the materials and technologies in transport infrastructure and transportation engineering.  Welcome to receive original research papers involving latest discoveries and improvements in this area.  Archiving  Sciendo archives the contents of this journal in Portico - digital long-term preservation service of scholarly books, journals and collections.  Plagiarism Policy  The editorial board is participating in a growing community of Similarity Check System's users in order to ensure that the content published is original and trustworthy. Similarity Check is a medium that allows for comprehensive manuscripts screening, aimed to eliminate plagiarism and provide a high standard and quality peer-review process. 