In the sixties and seventies it used to be the traditional way to build paved country roads in full width in rural road construction. Economical consciousness, agricultural production zones -in the context of developing better economical systems-forced us to change our views. A very natural path is a wheel-track path...
Nature Related Constructions in Rural Districts Wheel-Track Paving with Concrete
Effects of Temperature and Moisture on Concrete Pavements
During hardening concrete pavements do not have a uniform distribution of temperature throughout the thickness. The calculation of tem-perature stresses has to start from the differencebetween the zero-stress-temperature and the actualtemperature. Itisadvantageous if (for example dueto wet-curing) the zero-stress-temperature is lowerat the top than in the middle of the slab....
Economic Analysis of Cement Fly Ash Bound Materials
In order to design a cement bound mixture for use in base/sub-base pavement layers, it isusually re-quired to obtain a certain minimun strength value.Ifonly one type of binder isused, the problem hasonly one restriction and one variable, so, one onlysolution. However, if more binders are added tothe mixture, asit happens...
The Development of Concrete Safety Barriers in France
The use of concrete safety barriers is currently increasing considerably. The area of use, limited for a long time to urban or suburban carriageways, has now spread to the whole of the road network. The appearance of sites longer than 10km had led companies to work in a different manner,...
The Influence of Dowel Deviation on Concrete Paving Slabs
A series of tests have been carried out to figure out the in-fluence of deviation of the dowels on concrete paving slabdowels with respect to slab movements through shrinking andthermal variations.The stresses produced in the slabs for various deviations withrespect to the theoretical position and according to the systemchosen to...
Reuse of Crushed Concrete as a Road Base Material
Aggregates from crushed road concrete were tried in 7 test sections, and 84 samples from some lOcrushing plants were :ested in the laboratory. lt has been shown that aggregates suitable for re-use in sub-Jases or road bases can be produced not only in fixed plants butalso by small mobile crushers,...
Rapid Reconstruction of Concrete Slabs on Airfield Runways
The rapid reconstruction of concrete slabs on airfield runways is a technology presented to airports operation authorities in order to strictly shorten the reparation period when the runway is unpracticable. The French airports and airbases engineering services proceeded with two demonstration works on the BORDEAUX and NlMES airports. The reconstruction...
5th International Symposium on Concrete Roads 1986 Aachen Germany
Closing ceremony from 5th International Symposium on Concrete Roads 1986 Aachen Germany
5th International Symposium on Concrete Roads 1986 Aachen Germany
Indexes, General Reports and Additional Contributions from 5th International Symposium on Concrete Roads 1986 Aachen Germany
5th International Symposium on Concrete Roads 1986 Aachen Germany
Index of Papers and Opening from Addresses from the 5th International Symposium on Concrete Roads 1986 Aachen Germany
Developments in concrete road construction – European survey
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....
Theoretical study of technical and economic improvements resulting from the use of equipment train in concrete pavement construction
The report deals with technical and economic improvements resultiRg from the use of a concrete paving train in the construction of concrete roads. The following parameters are investigated: number of trucks needed for the transport of concrete depending on the capacity of the mixing ~lantt the progress rate of the...