Concrete International March 2014 No. 3 Complete Issue
Click on the cover image for the flip book version.
ACI Unveils New Logo and “Always advancing” Tagline
Official rollout held at World of Concrete
2013 APA Awards
The Architectural Precast Association (APA) announced the winners of its 2013 APA Awards for Design & Manufacturing Excellence.
Decorative Concrete Council Award Winners for 2014
The Decorative Concrete Council, a specialty council of the American Society of Concrete Contractors, St. Louis, MO, has announced the winners of its Sixth Annual Decorative Concrete Awards competition.
The Nevada Living Learning Community
A special edition of ACI Committee 124’s Notable Concrete
A Swedish Home with Concrete Gables
Summerhouse Lagnö, in Västra Lagnö, Sweden, won the international House of the Year Award 2013. The client’s desire for a maintenance-free structure served as the inspiration to design the house as an integral part of nature. The terrace, interior floors, and facades of the building are made of exposed, natural-colored cast-in-place concrete formed using plywood formwork. The weight and color scale of concrete connects the house to the granite bedrock of the island setting.
Best Practices: Trowel-Finished Integrally Colored Concrete
ACI Names 26 New Fellows
Members to be awarded at the spring convention
Stability of Circular Bridge Column Reinforcing Bar Cages
This peer-reviewed article presents an investigation conducted to determine the behavior of bridge column reinforcing bar cages subjected to lateral loads. Two full-scale cages were tested until failure to determine the response to lateral displacement and identify progressive collapse sequences. Using the results from the experimental study, nonlinear static and dynamic finite element analyses were performed on computational models of the cages.
Concrete Sustainability Forum VI
ACI Concrete Sustainability Forum VI took place in conjunction with the ACI Fall 2013 Convention. The Forum contained presentations on low carbon and negative-carbon concrete, sustainable cement, sustainable concrete structures, standards, Product Category Rules (PCRs) and Environmental Product Declarations (EPDs), and sustainability standardization in Korea. The presentations were followed by a summary of discussion points and concluding remarks.
Microsphere-Based Admixture for Durable Concrete
BASF has developed a liquid microsphere-based admixture. At a dosage of 1% by volume of concrete, this new admixture will protect concrete exposed to cyclic freezing and thawing under saturated conditions. Full-scale fields trials using ready mixed concrete from both dry-batch and central-batch plants show that microsphere-treated concrete is easy to place and finish.
Concrete Q & A: Crack Width Determination
Can feeler-type gauges, such as gap tools or wire gauges, be used to measure crack widths in concrete members in lieu of traditional crack comparator cards or optical devices listed in ACI 224.1R-07?1 In my experience, feeler gauges can be better tools in low light conditions and where there is a lot of dust/debris on the concrete surface.