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Recommendation for the maintenance of concrete roads in the Federal Republic of Germany

Conf-paper-iscr

The "Code of practice for the maintenance of concrete roads" ("Merkblatt für die Erhaltung von Betonstrassen") was published in the Federal Republic of Germany in 1985. It is based on the 1968 edition, but clearly reflects further developments in maintenance techniques, e. g., improved drainage. The code forms part of...

Surface treatment of limestone concrete slab with the chipping technique

Conf-paper-iscr

Since 1980 the technique of pavement construction with thick concrete slabs has been applied on 100 km of the A.26 motorway (Calais - Reims) in northern France. The concrete employed is made with regional limestone aggregates. In order to counteract lowered skidding resistance due to wear of these materials, a...

Continuous quality control of high performance concretes for road – within the framework of site supervision – using a new field tested BASIC-MC programme

Conf-paper-iscr

Introduction and statement 'of problems: This paper closes the gap in concrete highway engineering technology by evaluating complex compactionphenomena and by deriving mathematical relationships between the concrete-technological, dynamic (thixotropic- plasticized) and physical parameters. It is based on the latest experience, e.g., including the construction of the concrete pavements of the...

Cost- effective restoration of jointed concrete pavements

Conf-paper-iscr

This paper will summarize results from a major research project on the repair of jointed concrete pavements in the USA. The study approach involved: (I) a comprehensive evaluation of current and new alternate methods of joint/crack repairs, (2) selection of the most promising techniques, (3) the development of design and...

Repair of concrete pavement surfacing with cement mortar finishing coats

Conf-paper-iscr

The surfaces of concrete carriageways are subject to continuous wear due to the action of traffic and also to that of frost and the application of de-icing salts. The deteriorative damage affecting the concrete can range from mere surface wear by abrasion to loosening oi the structure of the material...