Abrasion susceptibility of highway pavements has a great impact on the skid resistance, and consequently accident rate. A rotational abrasion device is introduced, providing the advantage of field simulation of wheel passage, in comparison with existing standard methods. The device was used to measure abrasion susceptibility of concrete pavements with different textures. The obtained results we...

Sealers are used to enhance concrete durability through their ability to prevent moisture penetration and chloride intrusion, consequently improving the freeze-thaw performance of the concrete and preventing corrosion of the steel reinforcement, respectively. This paper summarizes three years of comprehensive field and laboratory investigations which were undertaken at the University of Manitob...

This paper describes an in-depth evaluation of an abrasion testing procedure for concrete pavers developed in Australia The test involves abrasion of the paver surface by a rapidly rotating ball race under load. Water is used both to lubricate the race and to remove debris. The investigation included the study of factors affecting the test results such as the load applied to the ball-race, the ...

This paper deals with the state-of-the-art information on high-calcium, ASTM Class C fly ash use in cement-based construction materials, such as high-performance concrete, ready-mixed concrete, etc. The major topics included are: properties of fly ash, effects of fly ash inclusion on fresh and hardened concrete, and future research needs. The fresh concrete properties include workability, water...

There has been increased deconstruction and demolition of reinforced concrete structures due to the aging of the structures and redevelopment of urban areas resulting in the generation of massive amounts of construction. The production volume of waste concrete is projected to increase rapidly over 100 million tons by 2020. However, due to the high cement paste content, recycled aggregates have ...