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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 426 Abstracts search results

Document: 

CI4804Hörmann-Gast2

Date: 

April 1, 2026

Author(s):

Andra Hörmann-Gast and Tara C. Hutchinson

Publication:

Concrete International

Volume:

48

Issue:

4

Abstract:

In the most recent updates to the ACI 355 prequalification standards, changes were made to the requirements for testing and assessment of anchors intended for use in seismic design environments (SDC C through F). These changes are reflected in ACI CODE-355.2-24 and ACI CODE-355.4-24. Both standards are referenced in ACI CODE-318-25, “Building Code for Structural Concrete—Code Requirements and Commentary.” This article provides background for these changes, including a historical perspective on seismic qualification and design of anchorage, supporting research, and ACI Committee 355 decisions.

DOI:

10.14359/51750637

Document: 

CI4804Parra-Montesinos

Date: 

April 1, 2026

Author(s):

Gustavo J. Parra-Montesinos, Sergio M. Alcocer, Martin A. Cuadra, and Rashid Ahmed

Publication:

Concrete International

Volume:

48

Issue:

4

Abstract:

ACI CODE-318-25 provisions for calculating horizontal joint shear force in beam-column joints of structures assigned to Seismic Design Category (SDC) A and B generally assume moment transfer to the joint is governed by the nominal flexural strength of the beam(s). There are cases, however, where moment transfer is governed by column flexural yielding or where both the beams and columns framing into the joint are expected to remain elastic. Examples can be found in roof joints and in joints with post-tensioned beams whose design is governed by serviceability conditions. Guidance is provided herein for determining horizontal shear force in joints where moment transfer is not governed by beam flexural yielding through an example roof joint between a cast-in-place post-tensioned beam and a reinforced concrete column.

DOI:

10.14359/51750641

Document: 

SP367_08

Date: 

March 1, 2026

Author(s):

Brock D. Hedegaard

Publication:

Symposium Papers

Volume:

367

Abstract:

This paper presents pedagogical tools that may be used in the instruction of torsional design of reinforced concrete beams for an advanced concrete design class geared for senior-level undergraduate and Master’s-level graduate students. Torsion design of reinforced concrete combines both with longitudinal steel requirements for flexural moments and transverse steel requirements for shear force, as therefore makes a useful framework for synthesizing many different beam design topics into an “advanced beam design” unit. For the benefit of the instructor, or even the enterprising student, this is followed by an overview of torsional demands and design in accordance with ACI 318-25. This paper presents course-level information about where and how a torsional design unit may be taught within an advanced concrete design course. Examples of physical demonstrations, example problems, and assessment methods are given to deliver content to students and to evaluate their ability to meet the stated learning objectives. The paper concludes with a discussion on the lessons that the author has learned from teaching this topic since 2020.

DOI:

10.14359/51750595

Document: 

SP367_01

Date: 

March 1, 2026

Author(s):

Sriramya Nair, Cameron D. Murray, Benjamin Z. Dymond

Publication:

Symposium Papers

Volume:

367

Abstract:

Teaching college students advanced concrete materials and structural concrete design is a challenging task because students have a myriad learning styles, and instructors are often ill equipped to meet students where they are with appropriate experience and teaching-related resources. This disconnect can create several bottlenecks to learning, especially within courses that present advanced concrete topics that are more complex and challenging. This paper outlines a special publication series related to best practices and lessons learned for teaching advanced concrete materials and structural design by experts in the field from across the United States. Furthermore, this introductory paper outlines the history of teaching and learning resources at the American Concrete Institute (ACI) and provides a high-level overview of other technical concrete-focused resources and teaching development resources that can be used to bridge the gap between teaching and learning challenging concrete subjects. The goal of this special publication is to provide a resource for anyone that accepts the challenge of teaching advanced concrete materials and structural design, from a new instructor to an experienced professor.

DOI:

10.14359/51750588

Document: 

CI4801Q&A

Date: 

January 1, 2026

Publication:

Concrete International

Volume:

48

Issue:

1

Abstract:

This month's Q&A discusses the new compliance requirements for field-cured specimens in ACI CODE-318-25 and other procedures approved by the licensed design professional to evaluate concrete strength.

DOI:

10.14359/51749392

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