Hydration and mechanical properties of water-entrained cement-based materials

Luis Pedro Esteves

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Abstrakt

In this work, the relation between compressive strength and the hydration of waterentrained silica fume modified cement-based materials is analysed. A model developed in previous research is used to determine both pozolanic and internal curing activity. This is done taking as base-input the thermal decomposition of SF-added and plain cement-based systems. It is found that the addition of superabsorbent polymers enhances both primary and secondary reactions within hydration. There is also a clear indication that the physical properties of the cement paste influences the course of the secondary reaction. Furthermore, the compressive strength of the composites was analysed in non-restrained and in restrained systems, referring to cement pastes and cement mortars respectively. The measured compressive strength is lower in the case of water-entrained unrestrained cement-based materials. However, in restrained systems, the addition of superabsorbent polymers is beneficial. The relation between hydration degree and strength development is discussed for water-entrained cement-based materials. Further research is required to verify the degree of cracking of these systems.
OriginalsprogEngelsk
TitelProceedings of the 9th International Symposium on High Performance Concrete
Antal sider8
ForlagNew Zealand Concrete Society
Publikationsdato2011
ISBN (Trykt)047319287X, 9780473192877
StatusUdgivet - 2011
Udgivet eksterntJa

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  • Citationsformater

    Esteves, L. P. (2011). Hydration and mechanical properties of water-entrained cement-based materials. I Proceedings of the 9th International Symposium on High Performance Concrete New Zealand Concrete Society.