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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Showing 1-5 of 7 Abstracts search results
Document:
CI4706Allred
Date:
June 1, 2025
Author(s):
Bryan Allred, Frank Malits, and Neel Khosa
Publication:
Concrete International
Volume:
47
Issue:
6
Abstract:
For all concrete structures, cost effectiveness is heavily influenced by the timing of formwork cycling. For post-tensioned structures, review and approval of elongation records is a critical step within each formwork cycle. This article explores the timeliness of reviews, purpose of elongations and tolerances, evaluation of stressing records, and reasonable expectations for all stakeholders.
SP-355_15
July 1, 2022
Johann Plank, Lei Lei
Symposium Papers
355
Polycarboxylates (PCEs) currently dominate the global superplasticizer market. Among them, HPEG and IPEG PCEs have attained a prominent position as they present the most cost-effective PCEs known at present. Recently, novel vinyl ether PCEs designated as EPEG and GPEG PCEs were introduced, thus broadening the family of VPEG PCEs, and their overall performance is still evaluated. Well documented are now the advantages of novel phosphated comb polymers which can significantly reduce the stickiness of concrete e.g. in UHPC. In spite of many attempts, so far no overall cost-effective clay tolerant superplasticizer has been identified, the challenge being that such a structure must include side chains that however do not contain polyethylene glycol/polypropylene glycol (PEG/PPG) or polyamines. Fortunately, for calcined clay blended cements, HPEG PCEs of specific molecular design as well as zwitterionic (amphoteric) PCEs have proven to be highly effective. Moreover, AAS binder systems were successfully fluidized with APEG or HPEG PCEs exhibiting particularly short side chains (nEO < 10). This review underlines the critical role that innovation in chemical admixtures will play in the future to facilitate a successful migration to low-carbon binders.
DOI:
10.14359/51736021
CI4407DestreeMobasher
Xavier Destrée and Barzin Mobasher
44
7
The authors discuss an article by J.L. Silfwerbrand, “Industrial Fiber Concrete Floors,” published in the May 2021 issue of CI. Focusing on Belgian/Continental and Swedish approaches to the design of steel fiber-reinforced concrete slabs, the article presents an alternative perspective based on recent publications and latest developments in design and testing.
CI4309Q&A
September 1, 2021
Jim Klinger
43
9
Q. I’m working on a project that requires my team to place concrete on various substrates prepared by other subcontractors. What should I focus on when accepting these substrates to avoid any unnecessary issues?
CI4306ConcreteQ&A
June 1, 2021
Bruce Suprenant
Q.Who is responsible for coordinating construction tolerances on a project: the designer or the contractor?
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