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...
Critical assessment of various construction techniques
The long-term behaviour of various types of road pavement construction can be estimated or prognosticated from a methodical assessment of the condition of the roads and the associated data collection. Prognoses can be made not only with regard to technical cri teria, but also with regard to overall cost trends...
A British Railway Slab Track Project
Paved concrete track (PACT) is a continuously reinforced profiled concrete slab laid by a purposedesigned sLi.pf'o rm paving train on which the rails are continuously supported. This paper traces the development of the system by British Rail and includes a detailed description of the components of the system and the...
UK practice for the design and construction of concrete roads
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
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...
An assesment of interlocking concrete block pavements
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
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
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
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...
New guidelines for the standardization of pavement structures 1986 edition (RStO 1986) – Comparative study at European level
The new standardization guidelines RStO 86 contain rules for the surfacing of roads and other trafficked areas with bituminous, concrete or block pavements, for fully cement-bound pavements as well as for cycle tracks and footpaths. Six pavement construction classes are distinguished, depending on traffic loading. For determining the construction class,...
Assessment of the evenness of cement concrete pavements and study of the means to achieve high quality evenness
Pavement evenness is one of the characteristics that are most directly felt by the road user. It determines not only driving comfort and safety for obvious reasons, but also the dependability and operation costs of vehicles. Evenness is measured using longitudinal profile surveys produced by the A.P.L. (longitudinal profile analyzer)....
Use of concrete block paving – Constructions in Belgium
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...