Tag Archives: Concrete

An ultra-high-performance upgrade

The Rotman School of Management at the University of Toronto (U of T) has grown substantially over the last 12 years. Consequently, this innovative business school has outgrown its downtown space, resulting in a $91.8-million expansion project that includes construction of a new 15,004-m2 (161,500-sf) building clad with a curtain wall system incorporating ultra-high-performance concrete (UHPC).

+ Read More

Do you know what’s in your concrete?

From towering skylines and massive dams to modern bridges and centuries-old temples, concrete structures are the basis for much of civilization’s infrastructure and its physical development. Concrete is used worldwide, more than any other manufactured product—twice as much of it is used throughout the world than all other building materials combined. Each year, approximately four tonnes are used for every one of the nearly seven billion people on Earth. (This information comes from the 2009 U.S. Geological Survey).

+ Read More

Will this concrete help build a better bridge?

When a reinforced concrete bridge deck is subjected to freeze-thaw cycles and de-icing salts over a number of years, the ensuing deterioration drastically reduces the structure’s service life and results in costly maintenance or early replacement. In such severe environments, high-performance concrete (HPC) is often required because of its superior strength and low permeability. Unfortunately, HPC also has a tendency to crack prematurely if not properly cured.

+ Read More

Designing structural anchorage to concrete

Annex D of Canadian Standards Association (CSA) A23.3-04, Design of Concrete Structures, introduces a new and comprehensive limit states design (LSD) procedure for determining factored tension and shear resistance of both cast-in-place (CIP) anchors and pre-qualified post-installed mechanical anchors installed in cracked and uncracked concrete.

+ Read More