Part of the 2006 Concrete Technologies for Sustainable Buildings workshop this presentation discusses the architect’s perspective on concrete design and construction. Nielsen describes reasons architects use concrete -structural expression form durability fire resistance etc.- as well as the environmental context in which building design and materials now exist. Nielsen further discusses LEED point systems and the incorporation of more sustainable types of concrete. He also describes the Centre for Interactive Research on Sustainability -CIRS- project and its sustainable design goals.

Presentation Author: Martin Nielsen, P. Eng, Busby Perkins + Will Architects Ltd.,

Part of the Concrete Technologies for Sustainable Buildings workshop Klein’s presentation provides another user perspective on concrete made with supplementary cementing materials -SCM- and large scale building projects. This presentation discusses issues such as early strength gain and the use of accelerators. It also discusses more sustainable building technologies and SCM concrete in aspects such as structural systems -BubbleDeck- and energy systems -thermodecks- . Klein refers to specific projects such as Technology Enterprise III -TEF III- at the University of British Columbia.

Presentation Author: Diana Klein, P.Eng., Read Jones Christoffersen Ltd,

Part of the Concrete Technologies for Sustainable Buildings workshop this presentation examines the environmental impact of Portland Cement concrete production and the associated greenhouse gas emissions. It also describes EcoSmart Concrete objectives and the risks and benefits of using supplementary cementing materials.

Presentation Author: Michel de Spot, P.Eng., EcoSmart Foundation,

This Study examined the nature of the risk to the engineer ready-mixed supplier and contractor in the production of concrete containing fly ash as a cement replacement. It also examined quality control -QC- as reducing real and perceived risks. The Study found that simply increasing QC would not reduce the risk sufficiently. More meaningful tests and QC processes that will relate directly to the performance of FA in concrete are needed such as those in a total quality management approach. The Study also identified the need for changes in standards -CSA A3001- and in mill certificates provided by the FA producer. The Study further identified a major role for the industry associations to implement Study results a leadership role for FA producers and a major role for EcoSmart in addressing the perceived risks.

Technical Report Author: Phil Seabrook, P.Eng.