ISIS Neutron and Muon Source Data Journal

Inhibition of alkali-silica reaction using tetraethyl orthosilicate silane (TEOS28 and TEOS40) for hardened cement-based materials

Abstract: The alkali-silica reaction (ASR) is one of the main deleterious processes that affects concrete structures around the world. When it comes to the durability of large-scale projects, such as hydroelectric plants, predicting the performance of aggregates and materials throughout their useful life becomes an important factor.In recent decades, the use of surface treatments has become a good option among existing materials to help minimize the impacts of the alkali-aggregate reaction (AAR). Applications of silanes/siloxanes in real structures, diagnosed with alkali-aggregate reaction, have already yielded positive results from the point of view of reducing expansion kinetics. The use of inorganic materials with certain hydrophobic properties related to the crystallization of hydrated products, such as ethyl silicate, has aroused greater interest due to the entry of aggressive agents, such as chlorides and sulfates. We propose to characterize the impact of adding TEOS to cement paste. This characterization will contribute to the study of the control mechanisms of concrete expansion. Therefore, the objective of this study is to evaluate the effectiveness of two TEOS-based products containing different compositions of SiO2, through the analysis of hydration data from cement components using the quasiellastic and inelastic neutron scattering technique.

Principal Investigator: Dr Margareth K.K.D. Franco
Local Contact: Dr Mohamed Aouane
Experimenter: Mr Rodrigo Rhinow
Experimenter: Dr Leide Cavalcanti
Experimenter: Mr Matheus Martins
Experimenter: Miss Lidiane Abadessa
Experimenter: Dr Fabiano Yokaichiya
Experimenter: Mr Marcio Bulla

DOI: 10.5286/ISIS.E.RB2420355

ISIS Experiment Number: RB2420355

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Dr Margareth K.K.D. Franco et al; (2025): Inhibition of alkali-silica reaction using tetraethyl orthosilicate silane (TEOS28 and TEOS40) for hardened cement-based materials, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2420355

Data is released under the CC-BY-4.0 license.