Depending on the environmental conditions during casting and hardening, actual temperature and moisture gradients in concrete pavement induce strains. These strains lead to deflections of the slabs or, when restrained, to stresses and in some cases, mainly in combination with traffic loads, to cracks. Concrete with recycled concrete aggregate (RC-Concrete)...
Influence of Moisture on the Deformation (Warping and Curling) of Concrete Road Pavements Consisting of One or Two Layers with and without Recycled Aggregate
Effects of Slags Produced in Turkey on Chloride Penetration of Concrete
In this study, effects of slags widely used as mineral admixture in concrete industry on chloride penetration of concrete were investigated. Three different slags were used as replacement of cement (PC42.5) by weight of 25%, 50%, 75%. Setting test , determination of specific gravity, determination of specific surface were carried...
Fibrous Ferrocement – An Ideal Material for Bridge Overlays
The overlays of highway bridges are usually subjected to stresses like impact stresses, longitudinal stresses, due to the application of brakes and wear and tear stresses. The moving loads on bridges have a jumping action due to uneven surface on which they move. This jumping causes shocks and vibrations of...
The Study of Mean Time Drying Shrinkage Behavior of Steel Fiber Reinforced Concrete Pavements
Concrete structures shrink when they are subjected to a drying environment. If this shrinkage is restrained, then tensile stress develop and concrete may crack. This shrinkage is a major concern for concrete structures especially for wall, slab and pavements. One of the methods to reduce the adverse effects of shrinkage...
Development of Cement Treated Asphalt Mixtures for Pavement Rehabilitation
Cement treated asphalt mixtures (CTAM), which are composed of an asphalt mixture and cement milk injected into voids of the asphalt mixture, were studied for use as a fast overlay material for airport pavements. The cement milk must have adequate fluidity for about 30 minutes and must develop a flexural...
High-Quality Concrete with Recycled Aggregates
New laboratory and field investigations showed that it is possible to achieve durable concrete by using recycled aggregate above 4 mm from old pavements with cracks but no frost- or concrete structure deterioration. The concrete compressive and tensile strengths were slightly higher and the cracking sensitivity was slightly lower for...
Suitability of Superplasticized Recycled Aggregate Concrete in Road Construction
Piubably, in the years to come, the use of recycled aggregates in concrete may become the need of the day. This is becasue of the nonavailability of natural aggregates in some urban areas. Also, the enviromental laws may force for the closing down of aggregate plants. Apart from this, in...
Roller Compacted Concrete Pavement Using Recycled Concrete Aggregate
Usage of recycled concrete aggregates produced from crushed demolished concrete has been limited due to its higher cost and the difficulty caused from its major ingredients, cement mortar, and by-product powder. However, the exhaustion of aggregate resources and increase demand of preserving the natural environment require developing an effective application...
Renovation of an Apron in Front of a Hangar on Brussels National Airport Using Quick-Setting Concrete
The pavement of the apron on Brussels National Airport, which was constructed in the early sixties, was forming cracks. Given that fragments of concrete could in time be a danger to the aircraft engines, a thorough renovation of the apron was imperative. The distinctive feature of the site is that...
On the Use of Perious Cement Concrete for Wearing Courses and Its Efficiency Against the Noise Emitted by Heavy Trucks
The experiment presented here has been carried out within the context of a partnership research contract signed between the Road Directorate (French Ministry of Civil Equipment) and the GTM Construction Company. The autors are thanking both partners, and the following organizations or companies, which contributed with equal success to the...
Use of Superplasticized Fiber Reinforced Concrete in the Construction of Pavements
Fibre Reinforced Concrete (FRC) by itself has opened up a new era in the field of Civil Engineering. FRC has given altogether a new dimension to concrete technology. It is even difficult to imagine that just the addition of fibres into concrete mass can change the entire properties of concrete....
Pharmaceutical Waste
Studies are being carried out on the influence of pharmaceutical waste at the Ukrainian University of Transportation, a especially the liquid waste on the physicomechanical 3roperties of cement concrete