In the Spring of 2004, Public Works and Government Services Canada (PWGSC) will be constructing a new low-rise office building in Yellowknife, NT. EBA Engineering Consultants (EBA) was retained to review the concrete specifications for the project and to complete the laboratory trials to assist in confirming the feasibility of using fly ash to repl...[more]
This report outlines the preliminary results of a research project aimed at optimizing the fly ash
content in concrete. Such fly ash concrete would develop an adequate 1-day compressive strength,
and would be less expensive than the normal Portland cement concrete with similar 28-day
compressive strength.
This paper presents results on the compressive strength of mortars in which 10 and 20% of ASTM Type I cement has been replaced by ground fly ash from two different sources. The results are compared with those of the mortars made with ASTM Type I cement, and with the mortar in which 10% of portland cement has been replaced by silica fume. The result...[more]
The ability to design and build structures that last for 500 years or more instead of 50 will in the long run increase the concrete industry’s resource productivity by tenfold. Meanwhile, substituting recycled materials for natural materials, as described in this article, it should be possible to substantially improve the resource productivity of t...[more]
In recent years, self-compacting concrete (SCC) has gained wide use for placement in congested reinforced concrete structures with difficult casting
conditions. For such applications, the fresh concrete must possess high fluidity and good cohesiveness. The use of fine materials such as fly ash can ensure the required concrete properties.
This report assesses the proposed use of EcoSmart concrete in the Metro Skate Park. Because this report was written prior to the construction of the park, construction experience is not included; rather, the scope of this report is to record the experience of the design team with the specification of high volume fly ash concrete. EcoSmart concrete...[more]
