Conf. Paper (EUPAVE)

Application of steel fiber in concrete would increase modul of rapture (MR) and module of elasticity (E), which in turn decrease slab thickness in rigid pavements. Hence, damaging stresses due to thermal and moisture is reduced. Where as concrete mixes with Silica Fume (SF) would perform the same behavior with...

The aim of this research is to improve the properties of the soil by using phosphogypsum with cement stabilizing agent.Phosphogypsum and cement were used with the locally available soils in different portions and Atterberg limits, maximum dry density, optimum moisture content and unconfined compressive strength test were determined. It was...

Concrete motorways providing high performance and durable operation have been manufactured for many decades; nevertheless, continuous advancements are necessary to fulfill changing boundary conditions. Major challenges here are posed by increases in the volume of traffic as special requirements of traffic safety, environmental compatibility and economy. In order to develop...

In the literature of speciality there are studies about the calculus and behavior of continuously reinforced concrete pavements for alignment areas. In our paper we present some aspects of temperature variation and shrinkage stress in curve areas, taking also into account friction, which is determined experimentally in the laboratory. The...

Measures of increasing the crack-and frost resistance of a cement concrete pavement are presented in the paper: -use of control joints in the fresh concrete, only placed in the morning time; - increase by20% of the amount of plasticizer, mixing duration and compaction time of concrete mix.

The use of local aggregates of limestone nature for the producing of road cement concrete leads to obtaining numerous technical - economic advantages. Romania owns great limestone resources (over 3 milliards tons with an ensurance degree up to 999 years) smoothly spread over the entire surface of the country. In...

An industrial pavement with high durabilily iequiieiiieiils iiiade with "semi-continuous concrctc", high performance concrete with low cost materials and equipment is described.

is important to have the knowledge about the connections between different costs and different surface characteristics of a pavement. The costs are for the road, traffic safety, road user and environment etc. The surface characteristics are things like friction, micro- and macro structure, iuts, evenness, cracks, sloping and drainage etc....

The continuously reitifoteed concrete road executed in Monselice (Padua, Italy) is mainly devoted to heavy traffic. During construction works, the road had been fitted with suitably devised equipment to monitor the operating performance over a sufficiently long time period. The present paper is aimed at gathering significant data recorded in...

Roundabouts have already been used in Belgium for several years to regulate traffic at major road intersections. The surfaces at roundabouts are particularly subject to tangential stresses that result from centrifugal forces and from the overload on the outside wheels by the more or less significant tilting of the vehicles...

The effectiveness of thin bonded overlays depends upon the adhesion level at the interface with the existing concrete pavement. It appears that shrinkage, particularly at the very early ages (18-24 hours), is mainly responsible for delamination, i.e. separation between old pavement and overlay. The present paper discusses the results of...

The context resulting from the development of tfansportations and the requirements of a better accoustic confort. • Characteristics of the noise: sound speed; accoustic pressure; accoustic diagram; directiveness of the sound; accoustic spectrum. • Environment impact of the noise. Comparison of the railway and roadway noise. Most important factors that...