Resources

This document is a simple Excel spreadsheet which allows the user to input Air Temperature, Concrete Temperature, Relative Humidity & Wind Velocity to determine the Bleed Water Evaporation Rate. The formulae, developed by P Uno, are based on the well known ACI Bleed Water Evaporation Nomograph.

The ACI has released a new publication "Concrete Pavement Design, Construction and Performance written by Norbert Delatte. It is available through the ACI at www.concrete.org - go to their bookstore. "A pavement project may be envisioned as a three link chain, consisting of materials, design, and construction. Because the weakest...

The ASCP forum on Industrial Pavements provided valuable information on design, detailing, materials and construction issues related to industrial pavements. It also highlighted several differing opinions and challenges to existing practices. This presentation by Royce Ratcliffe covers: Fibres vs conventional reinforcement Testing of fibres How fibres increase load carrying capacity...

Among various construction activities, related to concrete pavement technologies, an important role is reserved to industrial floors; these structures, in many cases, present the same technical problems of road pavements. Characteristics, construction techniques, exercise conditions, maintenance and control of industrial pavements, in effect, are very similar to the ones usually...

In this study, possibility of top-down cracking in concrete pavement was investigated. The main cause of the crack is supposed to be tensile stress at the top of the concrete slab. 3DFEM simulations that took into account actual temperature distributions throughout slab depth were performed on concrete pavements for a...

It has been observed by many researchers that the subgrade behavior is load rate dependent. The apparent subgrade stiffness is much higher under the fast moving axle loading than during the slow developing temperature curling and moisture warping. However, traditionally a single k-value is used for both curling and axle...

The ability to spatially map the stiffness of the foundation layers under concrete pavements with intelligent compaction has created a need to define limits on the allowable stiffness variations in a given construction area as well as the maximum size of a non-complaint area which does not require remedial action....

In 2007 the Cement Association of Canada, industry members and the Centre for Pavement and Transportation Technology at the University of Waterloo partnered to carry out a study to evaluate the behaviour of pervious concrete pavement in the Canadian climate. Field sites have been constructed and monitored and laboratory testing...

As part of the Ministry of Transportation Ontario (MTO) drive to pursue innovation and have the “greenest” roads in North America, MTO is actively pursuing the use of pervious concrete pavement. Pervious concrete provides many environmental benefits and is recognized as a stormwater management best practice. There is also strong...

Pervious concrete pavement is drawing increasing attention for its high content of interconnected voids which is expected to reduce the environmental impact as concrete is often counted as a causal factor of the urban heat island phenomenon.  Performance of pervious concrete can be measured by water permeability, water  retentivity and...

For the last ten years, new composite pavement structures have raised a significant interest. Based on the association of a concrete layer bonded to an asphalt sub-base, they lead to a reduction of the layers thickness and cost. A long-lasting bond is essential. This paper focuses on the mechanical study...

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...