ESCSI Weekly 34
Expanded Shale, Clay and Slate Institute
ESCSI is the association for manufacturers of rotary kiln-produced expanded shale, clay and slate lightweight aggregate.
American Concrete Institute announced the winners of the Ninth Annual ACI Excellence in Concrete Construction Awards. The first place in the High-Rise Structures category was the Salesforce Tower in Chicago, IL, a 57-story skyscraper at 1119 ft (341 m). "The structure uses lightweight concrete decks supported by steel pans connected to a central core specified at a modulus of elasticity of 6.6 × 106 psi (45,500 MPa)." The award announcement in #ConcreteInternational continues, "This tower was the first high-rise in Chicago to specify third-party-verified Environmental Product Declarations (EPDs) for all concrete designs to certify carbon impact." According to @Hines post, "Salesforce Tower Chicago achieved a 27% reduction in carbon emissions with the production of concrete used and a 9% reduction in emissions with the steel production," thanks to the tower's design using "concrete construction and new concrete technologies in several unique ways," including ESCS lightweight concrete. Nominator: ACI Illinois Chapter Owners: Hines, The Kennedy Family, and AFL-CIO Building Investment Trust Corporation Architectural Firm: Pelli Clarke & Partners Engineering Firm: Magnusson Klemencic Associates General Contractor: Walsh Construction Co. Concrete Supplier: Prairie Materials
The recently published UCLA research indicates that ESCS alleviates the negative impact of soil compaction in the clear zone. Experimentation showed that replacing sand with ESCS in soil enhanced the infiltration capacity by 220% and increased plant available water by 58%. The paper highlights that soil with ESCS-biochar outperforms sand-biochar for E. coli and heavy metals removal and ESCS amendment could increase the climate resilience of roadside soil in clear zones."Use of expanded shale, clay, and slate aggregates and biochar in the clear zone of road infrastructures for sustainable treatment of stormwater"
Tonoy Das, Onja Davidson Raoelison, Hamid Rehman, Yuhui Zhang, Wendy Chau, Lisa Thamiz, Michael K. Stenstrom, Sanjay Mohanty
Department of Civil and Environmental Engineering, UCLA Department of Environmental Sciences, Quaid-i-Azam University
It's not too late to register for the second free webinar in The Concrete Durability Series, "Don't Patch It, Repair It," taking place today at 2 p.m. EST. Join the National Concrete Bridge Council, Vector Corrosion Technologies,?and VCS Engineering?to learn about the development and long-term performance of discrete galvanic anodes on bridge structures, as well as typical applications such as concrete repairs, joint repairs, and bridge widening. This webinar series offers valuable insights on developing sustainable and resilient infrastructure. Learn more and register for any or all of the virtual workshops here: https://lnkd.in/gzEdWAys
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If you haven’t had a chance to submit your abstract for fib ICCS 2024 (11-13 September 2024 in Guimar?es, Portugal), you are in luck! The deadline has been extended until 15 December 2023. For more information and to submit your abstract, please visit https://fibiccs.org/.