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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 2970 Abstracts search results

Document: 

CI4809Huso

Date: 

September 1, 2026

Author(s):

Deborah R. Huso

Publication:

Concrete International

Volume:

48

Issue:

9

Abstract:

A team of researchers at the Massachusetts Institute of Technology (MIT), Cambridge, MA, USA, investigated the development of concrete-powered capacitors. Combining cement, water, and ultrafine nanoscale carbon black can form a conductive “nanonetwork” inside concrete, and this material can be used to create electrodes. When combined with additional materials, everyday structures like walls, sidewalks, and bridges could create capacitors that can store and release electrical energy. This article describes how structural energy storage works, the MIT Electron-Conducting Carbon-Cement-Based Materials Hub’s (MITEC3) research findings, and the future feasibility of this technology.

DOI:

10.14359/51752031

Document: 

CI4809-Tech-Note

Date: 

September 1, 2026

Publication:

Concrete International

Volume:

48

Issue:

9

Abstract:

Various roadmaps have been developed by the cement and concrete industry that highlight the need for a significant reduction of carbon dioxide (CO2) emissions associated with concrete production. One strategy to reduce emissions is to reduce the clinker content in concrete. This can be accomplished by optimizing aggregate gradations or chemical admixtures to reduce total cement content used or use cementitious materials that have a low percent of clinker in them. However, low-clinker (content) concretes may, or may be perceived to, suffer from lower early-age strengths, which have limited their application in practice. This TechNote discusses low-clinker concrete, primarily obtained through the use of supplementary cementitious materials (SCMs), and provides practical advice concerning the strength of these mixtures at early ages (from setting to 7 days).

DOI:

10.14359/51752032

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: 

SP370_17

Date: 

June 1, 2026

Author(s):

Vlastimil Bilek, Lukas Prochazka, Filip Khestl, Katerina Matyskova

Publication:

Symposium Papers

Volume:

370

Abstract:

Hybrid cements contain a small amount of Portland cement; the rest of the binder is made up of pozzolanic or latent hydraulic admixtures. Another component is an alkaline activator. These binders, therefore, combine the advantages of alkaline activation and Portland cement. In this work, a combination of Portland cement, ground granulated blast furnace slag (GBFS), siliceous fly ash (FA), and ground recycled masonry (GRM) is chosen. The GRM mainly contains ground bricks - i.e., heat-treated clay with potential pozzolanic properties and usually about 7-8% CaCO3 from the original mortar. Sodium water glass modified with potassium hydroxide is used as an activator. Potassium ions improve the workability of the mixture and limit the efflorescence of the hardened mixture. The dose of cement was optimized, as well as the dose of the activator. Furthermore, mixtures with different GBFS or FA and GMR ratios were tested. With an optimal composition and a water-to-binder ratio of 0.50, it is possible to achieve compressive strengths between 15 and 20 MPa at the age of 28 days, with the expectation of further improvement.

DOI:

10.14359/51751779

Document: 

SP370_18

Date: 

June 1, 2026

Author(s):

M. Ojo, A. Rocha, A. Corraya, L. Frame, K. Wille

Publication:

Symposium Papers

Volume:

370

Abstract:

Concrete specimens containing iron sulfide-bearing aggregates were investigated under electrochemical acceleration to evaluate potential damage mitigation strategies. Cylinders were prepared with different aggregate sizes, sulfide contents, water-to-cement ratios, cement types, and pozzolanic replacements, and subjected to controlled electrochemical exposure to reproduce field-like deterioration within weeks. Damage progression was monitored using resonance frequency measurements, visual crack quantification, and microstructural analysis. Results showed that higher sulfide contents accelerated modulus loss and crack initiation, with coarser aggregates producing visible cracking and greater stiffness reductions, while finer aggregates largely avoided macrocracking. Higher water-to-cement ratios further accelerated deterioration, whereas lower ratios delayed both onset and propagation. Cement type and pozzolanic additions also influenced deterioration, with all mixtures exhibiting damage under electrochemical acceleration. Specimens containing Type I white Portland cement demonstrated greater resilience against rapid failure, while partial cement replacement with glass powder delayed early crack propagation. These findings demonstrate that electrochemical acceleration provides a reliable platform for evaluating potential mitigation strategies and show how mixture design parameters influence deterioration progression in iron sulfide-bearing concrete, offering insights that support the development of practical approaches to manage this durability problem.

DOI:

10.14359/51751780

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