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The judging panel for the ACI Excellence in Concrete Construction Awards selected winners for 2020 based on architectural and engineering merit, creativity, innovative construction techniques or solutions, innovative use of materials, ingenuity, sustainability and resilience, and functionality. The Kennedy Center Expansion Project in Washington, DC, USA, won the Overall Excellence Award. It was also selected as the first-place winner in the Low-Rise Buildings category.
Available in the following language(s): Spanish
Constructed in 1984, Sound of the Sea II condominiums, Emerald Isle, NC, USA, underwent comprehensive repairs in 2007 and 2008. Repair and preservation technologies implemented on this project included impressed current cathodic protection (ICCP) on balconies and localized galvanic cathodic protection in corridors and roof parapet repairs. After 11 years in service, ICCP continues to provide protection within the original design parameters.
Available in the following language(s): Spanish
Extensive research and testing have shown that several types of ground glass can perform well as a pozzolanic material in concrete. Supported by these results, a new specification ASTM C1866/C1866M, “Standard Specification for Ground-Glass Pozzolan for Use in Concrete,” was published earlier this year. This article provides much of the background information and industry context that accompanied the balloting of this new document.
Available in the following language(s): Spanish
ACI’s mentorships are managed by the ACI Foundation through its fellowship program. Through this program, graduate and undergraduate students enrolled in concrete-related educational programs receive assistance in finding an industry mentor as well as monetary support toward their studies. The article discusses how mentorship has changed over time, mentor/mentee relationships, and characteristics of a strong mentorship from the mentee and the mentor perspectives.
Available in the following language(s): Spanish
This article is a response to “Brittle Failures in Precast Parking Structures” by William L. Gamble, Gordon H. Reigstad, and Jason Reigstad, published in CI in September 2019. It provides discussion on the original design concept for prestressed concrete double-tees with flanges reinforced primarily with carbon-fiber-reinforced polymer grid, their development and evaluation, and flange failures. A closure from the authors of the September 2019 CI article is also provided.
Available in the following language(s): Spanish