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Performance improvement of fine-grained concrete by the input of SiO2 nanopowders and sols (separately and together with superplasticizersстатья
- Авторы: Potapov V.V., Kashutin A.N., Cerdan A.A.
- Сборник: AIP Conference Proceedings, 2016
- Том: 1785
- Год издания: 2016
- Место издания: AIP Publishing
- Аннотация: The influence of sols, nano-SiO2 and silica fume (separately and together with AQ1 superplasticizer “Relamiks T2”) on characteristics of the cement–water, and cement–sand–water systems has been studied. Nanoparticles were isolated from natural hydrothermal solutions by the two-stage scheme: cryochemical membrane concentration and vacuum freeze-drying silica sols. SiO2 nanopowder has been introduced into the cement–water system. The sol SiO2, silica fume and superplasticizer “Relamiks T2” have been introduced into the cement–sand–water system. Characteristics of solid samples were measured at different ages (from 3 to 28 days). The effect of nanoadditives on the density, dialling speed and the AQ2 final strength of cement specimens under compression and in flexure has been established. Keywords: nanopowder, silica sol, silica fume (microsilica), superplasticizer cement–sand–water system, mixing water, compressive strength, flexural strength
- Добавил в систему: Сердан Анхель Анхелевич (ст.)