Morphology-structural change of C-A-S-H gel in blended cements

نویسندگان

چکیده

Pastes of white Portland cement (wPC) and wPC-30 % pulverized fuel ash (PFA), -60 ground granulated blast furnace slag (GGBS), -30 or 60 inert filler (anatase-type TiO2) blends were prepared to investigate the dominant factors for morphological change outer product (OP) C-A-S-H gel in blended systems. The OP SCMs-blended cements changes its morphology from fibrillar-like mixed fine-fibrillar/foil-like when Ca/(Si + Al) ratio < 1.30 Al/Si > 0.15. Meanwhile, has mean length aluminosilicate chain longer than 7– 8, which, [SiO4] bridging site occupancy factor (SOFBT) is higher 0.6 [AlO4] SOFBT 0.3. pore solutions show characteristics effective saturation index (ESI) CH −0.15 ESI jennite-based C-S-H 0.10. remains fibrillar throughout hydration.

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ژورنال

عنوان ژورنال: Cement and Concrete Research

سال: 2023

ISSN: ['0008-8846', '1873-3948']

DOI: https://doi.org/10.1016/j.cemconres.2023.107156