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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 348 Abstracts search results

Document: 

CI4806Q&A

Date: 

June 1, 2026

Publication:

Concrete International

Volume:

48

Issue:

6

Abstract:

Successful planning, forming, and installation of expansion joints requires coordinated design and construction decisions before concrete forming and placement. This coordination includes: 1) establishing construction tolerances for formwork and concrete placement; 2) reviewing the manufacturer’s printed installation instructions (MPII) for the specified expansion joint; 3) estimating slab movements that will occur after forming and placement but before joint installation; 4) defining the installation timing; and 5) joint protection and repair. Effective coordination of these factors is essential to achieving successful expansion joint construction.

DOI:

10.14359/51751766

Document: 

CI4806DOKA

Date: 

June 1, 2026

Author(s):

Jon Washburn

Publication:

Concrete International

Volume:

48

Issue:

6

Abstract:

In high-rise construction, crane-dependent climbing systems rely on crane lifts to reposition formwork and platforms, often competing with other operations. Self-climbing systems address this challenge by taking the crane out of the equation, allowing crews to climb on their own schedule and maintain a consistent rhythm from floor to floor. Recent advancements in system design and control are expanding where and how self-climbing systems can be applied. This article explains the benefits of self-climbing systems, highlights advancements, and discusses Doka’s application of the technology.

DOI:

10.14359/51751762

Document: 

CI4802Klinger

Date: 

February 1, 2026

Author(s):

James Klinger, Jeremiah Mistele, Frank Salzano, Eamonn F. Connolly, and Bruce A. Suprenant

Publication:

Concrete International

Volume:

48

Issue:

2

Abstract:

In this article, information is provided regarding top-of-column tolerances and their impacts on constructability and productivity. The authors recommend that key ACI committees provide guidance on top-of-column tolerance specifications.

DOI:

10.14359/51749509

Document: 

CI4707TechSpotlight

Date: 

July 1, 2025

Publication:

Concrete International

Volume:

47

Issue:

7

Abstract:

An Architecture PhD Student at Eidgenössische Technische Hochschule (ETH) Zürich, Zürich, Switzerland, has developed a lightweight, foldable, and reusable formwork system for vaulted floors. Known as Unfold Form, this system is easy to fabricate, transport, and use.

DOI:

10.14359/51748934

Document: 

CI4707ConcreteQA

Date: 

July 1, 2025

Publication:

Concrete International

Volume:

47

Issue:

7

Abstract:

This month’s Q&A focuses on issues related to meeting in-place concrete strength requirements for removing forms for reinforced concrete slabs. It explains how the contractor might accelerate the construction schedule by implementing concrete mixtures with compressive strengths exceeding those specified for the project.

DOI:

10.14359/51748941

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