Developments in concrete road construction – European survey

Conf-paper-iscr

A survey of European concrete road construction is presented on the occasion of the fifth International Symposium on Concrete Roads. The Synoptic Table 1986 c~nta~ns in tabul~r form the principal data and guidel~ nes for the des~gn and construction of motorways and other roads of con~rete in 15 European countries....

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...

An assesment of interlocking concrete block pavements

Conf-paper-iscr

A number of interlocking concrete block pavements (lCBP's) in applications ranging from residential streets to a quarry access road have been monitored. This wc.rkhas included the changing nature of the block layer; particularly its stiffness. The latter quali ty has been assessed by means of the force required to remove...

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...

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...

Road/trackway structure a system for the future

Conf-paper-iscr

In September 1984 the first West-European trial section with the Nikex system was constructed in Rotterdam. This sys~em was developed in the early seventies by the Public Transport Service of Budapest, a concrete manufacturer and Budapest University. By now, well over 225 km (single track) is in use in the...

UK practice for the design and construction of concrete roads

Conf-paper-iscr

1.1 Concrete roads constructed in the enited Kingdom based on the advice contained J.n Road Note 29 (3rd Edition) 1970 have generally proved to be satisfactory in that as far as is known there have been no failure of slabs due to traffic loading. l'lhere failures have occurred these have...

Joints in concrete roads – Aspects of construction and performance

Conf-paper-iscr

Increasing demands are bein~ made on joints in conérete roads by greater traffic 'voluines anld heavier loads. Most joints 'perform satisfactorily, yet a small proportion fail in service, resultinn in expensive remedial work. The paper reviews the main types of joints, and problems associated with their construction and performance. It...

Use of concrete block paving – Constructions in Belgium

Conf-paper-iscr

Concrete paving blocks are an ideal material for the sufacing of trafficked areas, storage yards and residential roads in urban built-up areas. A number of examples of block pavings installed at Hasselt illustrate how it i~ thereby possible to create a pleasing "street image" which complies wi th the rules...

Bond characteristics for concrete overlays

Conf-paper-iscr

Even though a bonded overlay has the advanta~es such as lower cose and fewer problems in matching adjacent facilities, ic has not been used widely in Japan. The reason is that bond characteristics in concrete overlays have not been revealed and insufficient bond in con~entional techniques has caused some problems...

Economic appraisal of cement concrete versus asphaltic concrete pavements

Conf-paper-iscr

1. Introduction Since 1962 no cement concrete had been used in the governmental road sy~tem as a paving material. After 1975 the need to use this material again was felt more and more. Somewhere about 1982, during the decision making period regardi~g the type of pavement to be chosen for...

New developments in the construction of railway track bases without ballast

Conf-paper-iscr

The conventional form of construction for permanent way, as first conceived about ISO years ago, adopted the ballast bed for supporting the railway track from what at that time was the most economical road building method, namely, macadam. By the same token, a p:esent-day innovative form of permanent way construt~...