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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 420 Abstracts search results
Document:
CI4708ConcreteQA
Date:
August 1, 2025
Publication:
Concrete International
Volume:
47
Issue:
8
Abstract:
This month’s Q&A is a follow up to the February 2025 Q&A. It discusses changes in core conditioning requirements in ACI CODE-318 and ASTMC42/C42M that took place within the last 25 years and research findings that led to these changes. It also explains whether standard moisture conditioning requirements could be changed on some projects.
CI4708Abdullah
Author(s):
Saman A. Abdullah, Miki Mori, and John W. Wallace
Relevant test data for a comprehensive study of factors influencing bond-splitting behavior was identified from literature review. Based on this review, a database of 79 column and beam tests was compiled and studied to develop an alternative provision for bond splitting that was adopted in Section 18.7.4.3 of ACI CODE-318-25. The article summarizes the details of this study.
CI4706ConcreteQA
June 1, 2025
6
This month’s Q&A discusses changes in ACI CODE-318-25 for coefficient of friction for concrete placed against hardened concrete that is clean, free of laitance, and not intentionally roughened, as well as new provisions for determining if an intentionally roughened surface meets the 1/4 in. roughness specified in Table 22.9.4.2.
CI4705Bischoff
May 1, 2025
Peter H. Bischoff
5
This article, the fourth in a five-part series on calculating deflections using a new expression for the effective moment of inertia Ie introduced into ACI CODE-318-19, provides a deflection example. The example follows the procedure outlined in Part 1 to compute the deflection of reinforced concrete (nonprestressed) one-way slab with both ends continuous.
CI4704Bischoff
April 1, 2025
4
This is the third article in a five-part series. While Parts 1 and 2 review the procedure and basis for computing deflection of reinforced concrete with a new expression for the effective moment of inertia Ie first adopted in ACI CODE-318-19, this article examines the implications of this change for satisfying deflection limits of beams and one- and two-way slabs. A need is seen to revise current minimum thickness values for beams.
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