02-11-2018, 12:09 PM
Concrete International February 2018 No. 2 Complete Issue
Author(s)/Editor(s): ACI | Size: 5.50 MB | Format: PDF | Quality: Original preprint | Publisher: ACI | Year: 2018 | pages: 55
Author(s)/Editor(s): ACI | Size: 5.50 MB | Format: PDF | Quality: Original preprint | Publisher: ACI | Year: 2018 | pages: 55
RCC Dam Construction
Key features of roller-compacted concrete (RCC) dams are highlighted, using various dam types as examples. Topics include lift interfaces, facing systems, spillways, intakes and outlets, internal galleries, and joints. Test sections are recommended for training and to demonstrate that the systems, methods, and equipment proposed for a project will meet project specifications.
ACI Concrete Sustainability Forum Celebrates 10 Years
ACI Concrete Sustainability Forum X was held in 2017 at The ACI Concrete Convention and Exposition in Anaheim, CA. The Forum featured presentations from eight speakers, including the presidents of both ACI and fib. Presented topics included sustainability activities within ACI, fib, and ISO, new technologies for sustainability, and actions for the next decade.
ACPA 2017 Excellence in Concrete Pavements Awards
The American Concrete Pavement Association (ACPA) named the recipients of its 28th Annual “Excellence in Concrete Pavements” awards, recognizing quality concrete pavements and honoring the associated contractors, engineers, and project owners. Gold and silver level awards were given to 29 projects constructed in 2016 in the United States and Canada. Gold level awards are summarized in this issue.
Three-Sided High-Rise in Mexico City
Torre Reforma, a 57-story mixed-use building, is a new addition to the skyline of Mexico City, Mexico. The building is triangular in plan with elevators and egress stairways contained in the apex of the triangle and long-span pyramidal floor trusses. The trusses conceal plumbing, electrical, and mechanical systems, and allow for maximum ceiling heights and a column-free interior, facilitating unobstructed views over the city from every-level.
Making Connections and Setting an Attendance Record
A record number of 2235 attendees participated at The ACI Concrete Convention and Exposition – Fall 2017, held in Anaheim, CA, October 15-19, 2017.
Concrete Q&A: Chloride Concentration in Soil and Exposure Classes, and Cleaning Slabs During Tilt-up Construction
I’m designing a structure that will be exposed to chlorides in soil, so I’m reviewing the requirements listed in Table 19.3.2.1 —Requirements for concrete by exposure class, in ACI 318- 14.1 The chloride concentration in the soil is lower than the concentration in seawater, so can I specify concrete with a strength value between 2500 and 5000 psi (17.2 and 34.5 MPa), based on C1 and C2 exposure classes, respectively? Does ACI provide recommendations on cleaning concrete slabs during tilt-up construction?
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