Design

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...

The recently developed porous concrete techniques have been tried to apply to not only full-depth concrete pavements for new roads, but also thin bonded concrete overlay for rehabilitation works in Japan. This paper shows their performances as well as their designs and constructions.

The paper describes an application of ultra-thin white-topping on a bituminous factory pavement. Different road cement concrete mixes were studied: high-strength concrete, concrete with PP fibres added, concrete modified with latex, concrete made by tyre-rubber grains instead of natural aggregate and steel fibre reinforced concrete. The binder was CEM II/A-L...

In addition to the stresses caused by traffic loads concrete highway pavements may be subjected to considerable stresses due to environmental action effects and other related damaging mechanisms such as early age shrinkage, loss or absorption of moisture, temperature induced strain gradients and in some instances also alkali-silicareactions. Due to...

Axle loads are increasing all over the world including Turkey. Asphalt pavements are not able to carry this heavy traffic safely and economically. Using asphalt pavement for heavy traffic cause early deterioration of the pavement and higher cost of pavement maintenance. As an alternative, concrete pavements may be used instead...

Rigid pavement thickness design is either still based on the classical Westergaard solutions or is based on a more comprehensive finite element rigid pavement model to resolve the shortcomings of the layered elastic Burmister model. The latter gives a principally better representation of the slab edges and joints. However, because...

World practice (USA, Germany) has already noted the cases of continuous cracking of the surface layers of cement concrete pavements. Continuous cracking becomes evident several years later after completing construction and results, as a rule, in deterioration of the performance characteristics of the pavements. The paper shows the results of...

The strength development and permeability properties of two concretes prepared with natural pozzolanic cements, Trass Cement (TC) and Blended Cement (BC), were investigated and compared with those of an Ordinary Portland Cement (PC) concrete under varying water-curing periods. The mix design of concretes was made with an equal strength base...

The environmental performance of a Swedish concrete highway was analysed by use of Life Cycle Assessment (LCA). As a base, a similar study carried out in Finland was used [1, 2]. The system investigated include extraction of raw materials up to the user phase (traffic and lighting). The intention of...

The Zuidtangent is a free high quality public transport lane between the city of Haarlem and Schiphol Airpoprt. The full trajectoryi s built in continouusly reinforced concrete. In this paper some design aspects are described. Also the use of concrete as a wearing course on bridges and in tunnels is...

As a result of Urban Travel Plans implemented in major cities, public transport is being favoured as a convenient means of travel and mobility by all. Platforms (road- and trackbeds) designed for public transport must offer quality from the technical standpoint in order to handle channelled loads or the insertion...

It is known that concrete and flexible pavements are similar each other from the structural view point. Nowadays, especially, because of the innovations in airplane technology, airplane weights have been increased. Therefore airport maintenance has become more important. It is possible to obtain information about structural performance of a pavement...