Effect of Electron Beam and Heat Treatment on the Reactivity of Aggregates and Mineral Additives towards Alkali-Silica Reaction in Portland Cement Compositions

Aleksei B. Brykov; S.V. Mjakin; M.M. Sychov

doi:10.4028/www.scientific.net/MSF.992.3

Paper Titles

Effect of Electron Beam and Heat Treatment on the Reactivity of Aggregates and Mineral Additives towards Alkali-Silica Reaction in Portland Cement Compositions
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Disperse-Reinforced Polystyrene Concrete Modified by Silica-Containing Additive
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HomeMaterials Science ForumMaterials Science Forum Vol. 992Effect of Electron Beam and Heat Treatment on the...

Effect of Electron Beam and Heat Treatment on the Reactivity of Aggregates and Mineral Additives towards Alkali-Silica Reaction in Portland Cement Compositions

Abstract:

Electron beam (EB) and heat treatment of silica-containing aggregates and mineral additives for Portland cement mortars is shown to affect their activity in alkali-silica reaction (ASR) damaging concrete structures. In the case of ordinary mortar based on the sand free of alkali-reactive inclusions, both heating to 900°C and EB processing result in a significant increase of reactivity growing with the absorbed dose in the range from 100 to 600 kGy and correlating with the increase in the content of acidic hydroxyl groups on the surface. For sand with reactive chalcedony inclusions, EB treatment results in the growth of their reactivity while heating provides its significant decrease. In case of mineral additives such as silica fume and metakaolin known as very effective ASR-inhibitors, similar processing leads to the increase of their activity in mitigation of ASR. The observed effect is promising for simulation of expansion processes caused by ASR and enhancement of concrete structure resistance to alkali destruction during exploration.

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Periodical:

Materials Science Forum (Volume 992)

Pages:

3-8

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.992.3

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Online since:

May 2020

Authors:

Aleksei B. Brykov, S.V. Mjakin*, M.M. Sychov

Keywords:

Alkali-Silica Reactions, Chalcedoby, Electron Beam, Functional Groups, Heating, Metakaolin, Portland Cement, Pozzolanic Additives, Surface

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References

[1] J. Stark, B. Wicht, Dauerhaftigkeit von Beton, Bau-Praxis, Birkhäuser-Verlag, Basel, (2001).

Google Scholar

[2] Russian Standard GOST 8269.0-97, Crushed stone and gravel from dense rocks and industrial waste for construction works, Methods of physical and mechanical testing.

Google Scholar

[3] A.S. Brykov, M.E. Voronkov, Cement I ego primenenie (Cement and Its Application). 5 (2014) 87-94.

Google Scholar

[4] Durability of Concrete and Cement Composites, Ed. by C. L. Page, M. M. Page, CRC Press, (2007).

Google Scholar

[5] M.M. Sychov, N.V. Zakharova, S.V. Mjakin, Surface functional transformations in BaTiO3 – CaSnO3 ceramics in the course of milling, Ceramics International. 39 (2013) 6821–6826.

DOI: 10.1016/j.ceramint.2013.02.013

Google Scholar