International Concrete Abstracts Portal

Home > Publications > International Concrete Abstracts Portal

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 829 Abstracts search results

Document: 

CI4808CPCstatement

Date: 

August 1, 2026

Publication:

Concrete International

Volume:

48

Issue:

8

Abstract:

Differential curing occurs when variations in curing methods, materials, or site conditions result in inconsistent moisture loss, hydration, or temperature across a concrete floor slab. This inconsistency can produce significant performance and appearance issues in both plain and polished concrete floors. This article highlights the causes and effects of differential curing, and best practices to achieve uniform curing.

DOI:

10.14359/51751882

Document: 

CI4808TechNote213.1-24

Date: 

August 1, 2026

Publication:

Concrete International

Volume:

48

Issue:

8

Abstract:

This TechNote describes a process for determining equivalent curing durations for concrete made using conventional external curing and internal curing using prewetted FLWAs in ordinary portland cement (OPC) and SCM systems. A steel trowel was used to screed and finish the sample surface. In this process, equivalent performance is defined by the depth of the curing-affected zone (CAZ). However, the impact of the surface finishing method on the CAZ was not examined. The criteria presented offer one approach that can be used to determine the duration of external curing that is equivalent to internal curing. This would allow any benefits of using internally cured concrete on construction time to be quantified.

DOI:

10.14359/51751883

Document: 

SP370_10

Date: 

May 1, 2026

Author(s):

Janis Moye, Sylvia Keßler, Patrick Sturm

Publication:

Symposium Papers

Volume:

370

Abstract:

Supplementary cementitious materials (SCM) are promising alternatives for the reduction of CO2 emissions in the cement industry. Despite extensive research, their adoption, using Germany as an example, remains low due to potential disruption in manufacturing processes and standardization issues. Furthermore, the precursor output rate of e. g., fly ash and ground granulated blast furnace slag (GGBFS) is limited not only due to general cement substitution but for shortages in their respective industries. As a result, SCMs may only serve as a viable alternative binder in niche applications, such as concrete maintenance and repair. Additionally, the use of dry activators such as Na2CO3 facilitates conventional production methods.

This paper discusses results of sodium carbonate-activated slag mortars that were applied to concrete reference plates (A3-type as described in “Technische Regel Instandhaltung von Betonbauwerken,” eng. technical guideline for maintenance of concrete structures). The performance of alkali-activated slag (AAS) mortars was evaluated in terms of shrinkage behavior, compressive, flexural, and adhesive strength after dry thermal cycling and thunder-shower cycling. Interestingly, the results showed enhanced strength after exposure to these experimental conditions in comparison to ambient temperature curing. This highlights the critical role of proper curing, as AAS mortars are highly susceptible to increased shrinkage when not exposed to sufficient moisture.

The previous results show that AAS mortars - even without optimization - meet the required properties for structural repair class “R3” as defined in DIN EN 1504-3, promoting SCMs as promising alternative binders for these practical use cases.

DOI:

10.14359/51751753

Document: 

CI4804ASCCstatement

Date: 

April 1, 2026

Publication:

Concrete International

Volume:

48

Issue:

4

Abstract:

The contractor who is responsible for the site, typically the general or prime contractor, is responsible for: 1) secure location; 2) water sources; and 3) electrical power. The contractor requirement to meet ACI SPEC-301-20 requirements is supported by ACI PRC-132-2. ACI PRC-132-24 states the “testing agency has the responsibility to provide the means and methods for initial curing unless that responsibility has been assigned to another party in the contract documents.”

DOI:

10.14359/51750645

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

12345...>>

Results Per Page