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- W2550241036 abstract "In this study, shrinkage reducing admixture (SRA) was grafted on NanoSiO2 (NS) surfaces to synthesize novel core-shell ([email protected]) particles and improve dispersion of NS in cement paste. The synthesized [email protected] was characterized by Fourier transform infrared spectroscopy, dynamic light scattering, and thermogravimetric analysis. A series of tests were performed to investigate the effects of [email protected] addition on the compressive strength and shrinkage of cement paste. It is found that [email protected] increases the strength of cement paste, especially at later ages. Unlike conventional NS, which significantly increases autogenous shrinkage of cement paste, addition of [email protected] does not appreciably affect autogenous shrinkage of the paste at early ages. Based on dispersion and zeta potential measurements of NS and [email protected] particles in synthetic pore solution, we propose that hydration products around [email protected] may result in gradual separation of SRA from the core. The released SRA may reduce shrinkage and mitigate cracking of cement composites at later ages." @default.
- W2550241036 created "2016-11-30" @default.
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- W2550241036 date "2017-01-01" @default.
- W2550241036 modified "2023-10-16" @default.
- W2550241036 title "Characterizing cement paste containing SRA modified nanoSiO2 and evaluating its strength development and shrinkage behavior" @default.
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- W2550241036 doi "https://doi.org/10.1016/j.cemconcomp.2016.11.001" @default.
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