An accelerated road-wear simulator employed by Norcem for experimental testing of abrasion resistance of highway concrete pavements subjected to heavy traffic by studded tyres was set up at Slemmestad, Norway in 1985. By increasing concrete strength from 50 up to 120 MPa, the abrasion was reduced by roughly 60-70 %....
High Strength Concrete For Highway Pavements Ano Bridge Decks
Precast Concrete Footway Paving Slabs That Resist Vehicular Overrun
This paper presents research into the design of square precast concrete paving flags ranging in plan size between 600 mm and 300 mm square. A design method for these paving flags overrun by vehicles is presented. The method shows that the existing test procedure underestimates the paving flag strength and...
Assessment of Survival Probabilities of Continuously Reinforced Concrete Pavements
This paper proposes a theoretically sound method of modeling the reliability function of pavement sections, using a statistical procedure that can correctly consider test sections that have not yet reached failure. Consistent and accurate reliability estimates were obtained applying this method to a continuously reinforced concrete pavements (CRCP) data base...
The Reconstruction of a Special Lane in Continuously Reinforced Concrete For Slow Vehicles on the A6 Along the Mountain Pass of Bessey En Chaume
Two different pavement structures as part of one and the same transverse profile, or a specific treatment for a slow lane extremely liable to rutting.
High Strength Roller Compacted Concrete
The present paper is devoted to the development of high strength, frost resistant roller compacted concrete. Effects of using silica fume, superplasticizer and air-entraining admixture in Ree are investigated in a comprehensive laboratory research program. It is demonstrated that it is possible through the use of these additives to achieve...
A New Design Method For Control of Cracking in Continuously Reinforced Concrete Pavement
Reinforcement stress and crack width has been in-vestigated in full scale experimental pavement ofContinuously Reinforced Concrete Pavement forthree years. The validity of designequation for pre-dicting crack width distributed through the thick-ness of the slab and reinforcement stress etc.,which is based on bond stress -slip relationshipconsidering the effect of both concrete...
A Contribution to the Study of Joints on Concrete Pavements
vlaterials used as joint sealants on concrete pavements are zenerally classified in: - Preformed sealants. - Field molded sealants. l'his work shows the demanded characteristics for preformed .ealants and field molded sealants. The last ones are divided in :wo types: thermosetting -two component systems- coldap-rlied, and thermoplastics --one component- bot...
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,...
Quality Assurance of Construction Materials For Concrete Roads in Germany
Heavy use of the pavements caused by traffic, cli-mate and winter service requires a highly resistantconcrete with high flexural strength. Correspon-ding requirements on road concrete are laid downin «Additional Technical Instructions for Cons-tructing Concrete Pavements» (ZTV Beton), partlyalso requirements on some concrete basicmaterials.All materials used for construction of concretepavements have...
Urban Road Pavements the Landscaped Pavement Concrete
The new concept of the urban fabric is taking on extension and is testifying increasingly to the fact that in our cities the street is not a road. Cement concrete designs have been staying abreast of these developments and architectural concrete is just one of the significant outgrowths of these...
A Programme of Comparative Tests on Plain Fabric Reinforced & Fibre Reinforced Concrete Ground Slabs
This paper reports on the first phase of a test programme which compares the performance of concrete ground slabs with (a) no reinforcement, (b) steel fabric reinforcement, (c) steel fibre reinforcement and (d) polypropylene fibre reinforcement. The slabs were 3.0m square, 0.15 and 0.13 m deep and subjected to a...
Cement Concrete Pavement on Granular Base Course of Graduated Concrete-Recycling-Ma Terlal
The hitherto used standard building method using hydraulic bound regulating and base course has been criticised for frequently faiîing. If existing concrete pavements are rehabilitated, the old road structures have to be involved into the new wearing system, so that the required bearing capacity E, ~ 50 Nz'mnr' may be...