EFFECT OF MINERAL ADDITIVES ON THE NEUTRALIZATION OF THE ALKALI–SILICA REACTION

Alwahed F. Abd; Yuri Krivoborodov

doi:10.62980/2076-0655-2026-485-494

UDC

691.32

CSCSTI

67.09

Russian Classification of Professions by Education

08.06.01

Russian Trade and Bibliographic Classification

5415

Russian Library and Bibliographic Classification

383

VAK Russia

2.1.5

EFFECT OF MINERAL ADDITIVES ON THE NEUTRALIZATION OF THE ALKALI–SILICA REACTION

Published in Technique and technology of silicates · Pages 485–494 · Rubric: MAIN RUBRIC

DOI: https://doi.org/10.62980/2076-0655-2026-485-494 · EDN: XHSNAA

Received: 20.10.2025 Accepted: 24.11.2025 Published: 25.12.2025 Language of publication: RUS

Authors

Alwahed F. Abd

Yuri Krivoborodov

Alwahed F. Abd

National Research Moscow State University of Civil Engineering Department of Construction Materials Science · Russian Federation · Moscow

Yuri Krivoborodov

Academic degree: doctor of technical sciences

Science rang: professor

National Research Moscow State University of Civil Engineering Professor · Department of Construction Materials Science · Russian Federation · Moscow

D. I. Mendeleev Russian University of Chemical Technology professor · Department of Chemical Technology of Composite and Binding Materials · Russian Federation · Moscow

ABSTRACT

This paper presents the results of an experimental study aimed at evaluating the effectiveness of mineral admixtures in suppressing the alkali–silica reaction (ASR) in concrete, which is one of the main causes of internal deterioration and reduced durability of reinforced concrete structures operated under humid conditions. The relevance of the study is due to the need to develop effective technological solutions that ensure the stability of the microstructure of cement stone and increase the service life of concrete structures, especially bridges, hydraulic engineering and infrastructure facilities. In the preparation of concrete, Khalaktyrsky sand (Kamchatka Krai, Russia) was used as fine aggregate. This sand contains an increased amount of reac-tive silica capable of reacting with the alkalis of cement, indicating a high probability of alkali–silica reaction (ASR) development in the absence of corrective admixtures. To reduce the intensity of ASR, the influence of two pozzolanic admixtures was investigated: silica fume (MKU-85) and the organomineral modifier MB2-50S, which represents a composition of silica fume and fly ash. The tests were carried out using an accelerated method regulated by GOST 8269.0, involving measurements of the relative linear expansion of fine-grained concrete specimens stored in an alkaline environment at a temperature of (80 ± 2) °C. The results showed that silica fume exhibited the strongest inhibiting effect: at a dosage of 15% by mass of cement, the measured ex-pansions decreased below the limiting level (0.1%) and stabilized, allowing the mixture to be classified as non-reactive. The MB2-50S modifier also demonstrated the ability to reduce the reaction intensity and improve the long-term stability of concrete behavior; however, its effectiveness was lower compared with silica fume. At the same time, increasing the content of MB2-50S above 15% may significantly enhance its inhibiting activity, making this admixture an economically justified alternative when adjusting the dosage.

KEYWORDS

alkali–silica reaction (ASR), silica fume, organomineral modifier, pozzolanic admixtures, reactive silica, linear expansion, concrete durability.

Funding

The work was carried out at NIU MSCU within the framework of the University Development Program “PRIORITY 2030”. Project 3.1 “Scientific breakthrough in the construction industry - new technologies, new materials, new methods”

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GOST

Abd Alwahed F., Krivoborodov Y. R. EFFECT OF MINERAL ADDITIVES ON THE NEUTRALIZATION OF THE ALKALI–SILICA REACTION // . 2026. pp. 485-494. DOI: https://doi.org/10.62980/2076-0655-2026-485-494. EDN: XHSNAA. (Date of access 19.08.2026).

MLA

Alwahed F. Abd, Krivoborodov Y. R.. "EFFECT OF MINERAL ADDITIVES ON THE NEUTRALIZATION OF THE ALKALI–SILICA REACTION." (2026): 485-494. DOI: https://doi.org/10.62980/2076-0655-2026-485-494. EDN: XHSNAA.

APA

Abd Alwahed F., Krivoborodov Y. R. (2026). EFFECT OF MINERAL ADDITIVES ON THE NEUTRALIZATION OF THE ALKALI–SILICA REACTION. , 485-494. https://doi.org/10.62980/2076-0655-2026-485-494 EDN: XHSNAA.

Chicago

Alwahed F. Abd, Krivoborodov Y. R.. "EFFECT OF MINERAL ADDITIVES ON THE NEUTRALIZATION OF THE ALKALI–SILICA REACTION." , no. (2026): 485-494. https://doi.org/10.62980/2076-0655-2026-485-494. EDN: XHSNAA.

WIKI

{{cite journal | author = Abd Alwahed F., Krivoborodov Y. R. | title = EFFECT OF MINERAL ADDITIVES ON THE NEUTRALIZATION OF THE ALKALI–SILICA REACTION | journal = | year = 2026 | pages = 485-494 | doi = 10.62980/2076-0655-2026-485-494 }} EDN: XHSNAA

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EFFECT OF MINERAL ADDITIVES ON THE NEUTRALIZATION OF THE ALKALI–SILICA REACTION

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