Resources

Resistance to freeze-thaw cycles is an important factor for the durability of concrete roads and structures in an outdoor environment. In many European countries, current national standards for concrete exposed to frost are limited to the composition of the mixture: minimum cement content, maximum water-cement ratio, and in some cases...

In this paper is given overview of mineral additives that are used to improve mechanical and durability properties of concrete used in concrete pavements. Use of mineral additives is possible in two different ways, as a cement additive during production and as a concrete additive during preparation. Mineral additives analyzed...

The AP-4 motorway connecting Seville with Cadiz in southern Spain was opened to traffic in 1971. About half its length has a concrete pavement designed in accordance with the Californian approach prevailing at that period (plain concrete pavement with undowelled joints, on a cement treated base). Pavements with asphalt concrete...

World’s and domestic experiences in constructing cement concrete pavements confirm that the concrete resistance to the action of frost and de-icing agents depends on the content of the conventially-closed air voids in hardened concrete. In Russia the requirements for the content of the air voids in hardened concrete based on...

Block or slab pavements with concrete or natural stones are mainly used for communal areas, where a variety in creation is welcome, but also the lifespan of the pavement is very important. At pedestrian precincts, which are also trafficked by trucks, often high vertical and horizontal loads occur. If the...

In this paper, the economic analysis has been done on both flexible and rigid pavements. These cost analyses play a great role on the decision-making stages in selection of pavement types. In this analysis initial cost of rigid and flexible pavements have been determined for both flexible pavements and rigid...

In June 2006, GISA a Public Company GISA, within the Department of Planning and Public Works of the Catalonian Regional Government, awarded CEDINSA the concession for the project of constructing and operating the projects of converting into a dual carriageway the stretch Vic-Ripoll of the C-17 highway. As a participant...

In view of increasing operation and maintenance requirements on existing concrete roads, it is im-portant to gain knowledge about their present bearing capacity. For this task, the Falling Weight Deflectometer (FWD) has proved to be of practical value for years in Germany and other countries worldwide. The FWD is a...

Argentina has a rich history in concrete pavement construction. However, in the late 70s this type of pavement begins to lose protagonism in national road activity. In order to reinstate this solution for paving and rehabilitation projects, the Instituto del Cemento Portland Argentino, in the mid-90s, carried out a series...

The Brazilian Army looked the Associação Brasileira de Cimento Portland (ABCP) for a strategic partnership, aiming to transfer technology and train the troops for such works. The result of this partnership was a full concrete pavement construction and control technology course, lasting two weeks, covering all stages, also including practical...

As an example of Spanish experience in the design of long-life pavements, this paper is going to examine the above-mentioned construction project for a stretch of motorway with a pavement of exposed aggregateexposed aggregate concrete. The cross-section of the pavement comprises: - 23 cm of HF 4.5 (concrete with a...

Prescriptions for concrete pavements issued by the Spanish Road Administration are included in two types of documents: the Standard for Structural Sections of Pavements (6.1 – IC) and the Specifications for Road and Bridge Works (PG 3). These documents were updated considering the latest advances in materials, construction processes and...