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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 937 Abstracts search results

Document: 

CI4802Giannini

Date: 

February 1, 2026

Author(s):

Eric R. Giannini, Brett A. Harris, Eric P. Koehler, M. Tyler Ley, Mohammed J. Uddin, Anis Ghanei, James J. Martinoski, and James M. Casilio

Publication:

Concrete International

Volume:

48

Issue:

2

Abstract:

With the concrete industry undergoing a period of innovation and a broadening spectrum of cements available in the market, a key question to consider is: What’s next after Type IL cement, and how can we use blended cements successfully in concrete construction? A panel of experts explored this question at the Hot Topic Session at the ACI Concrete Convention Fall 2025 in Baltimore, MD, USA.

DOI:

10.14359/51749506

Document: 

CI4708BrownTechSpotlight

Date: 

August 1, 2025

Author(s):

Daron Brown

Publication:

Concrete International

Volume:

47

Issue:

8

Abstract:

Internally cured concrete was used to repair bridge decks of the Wilson Dam in Muscle Shoals, AL, USA, and to provide a 100-year service life. The article discusses characteristics of internally cured concrete and the benefits of using it, as well as lightweight aggregates needed to produce such concrete and their properties.

DOI:

10.14359/51749081

Document: 

CI4702ConcreteQA

Date: 

February 1, 2025

Publication:

Concrete International

Volume:

47

Issue:

2

Abstract:

Should concrete core samples extracted from a structure be submerged in water until testing? This month’s Q&A provides answer to that question along with a discussion on proper and improper moisture conditioning of cores to be tested per ASTM C42/C42M.

DOI:

10.14359/51745617

Document: 

SP-362_68

Date: 

June 18, 2024

Author(s):

Troian Viacheslav, Gots Volodymyr, Bruno Alex, Panek Rafał, and Flatt Robert J.

Publication:

Symposium Papers

Volume:

362

Abstract:

It is known that the use of recycled coarse aggregates (RCA) can raise a variety of problems, which are mainly due to the porosity of the old mortar contained in RCA. One of the simpler ways to solve these problems is the pre-wetting of RCA, which allows not only to minimize disadvantages but also to obtain the advantages associated with the effect of internal curing. Undoubtedly, the strongest positive effect of pre-wetted RCA is on the rheology of recycled concrete. But there are also possible positive effects of internal curing for strength and durability of blended cement concretes, which require longer curing times compared to normal Portland cement concrete. In this paper, we mostly study the influence of porous RCA on the rheology of cement paste, based on slag cement with a 75% slag content. For this purpose, the absorption properties of RCA of different sizes were studied. From this, mathematical dependences of the workability of cement systems on w/c and time could be obtained. These further underline the positive effect of pre-wetting of RCA with regard to retaining the workability of cementitious systems. This lays the basis for a broader study of pre-wetting RCA on the rheology of mixtures, strength, and durability to be covered in future publications.

DOI:

10.14359/51742018

Document: 

SP-362_70

Date: 

June 18, 2024

Author(s):

Nader Ghafoori, Ariful Hasnat, and Aderemi Gbadamosi

Publication:

Symposium Papers

Volume:

362

Abstract:

This paper examines the influence of harvested fly ash on the properties of mortar and concrete. Class F and harvested fly ash were used at the substitution rate of 20% by weight of Portland cement. The investigated properties included heat release, consistency, setting time, compressive strength at different testing ages, absorption, the volume of permeable voids, surface resistivity, and drying shrinkage. The results revealed that the harvested fly ash produced the lowest released heat of hydration and longest setting times. Mixtures containing harvested fly ash displayed lower strength at all curing ages. Compared to traditional fly ash, harvested fly ash showed inferior transport properties for both absorption rate, permeable voids, and surface resistivity. Mixtures containing harvested fly ash showed comparable 120-day drying shrinkage when compared with the companion mortars made with traditional fly ash.

DOI:

10.14359/51742020

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