The role of phosphoric acid in improving the strength of magnesium oxychloride cement pastes with large molar ratios of H2O/MgCl2
作者： Tingjie Huang , Qiang Yuan , Dehua Deng
DOI: 10.1016/J.CEMCONCOMP.2019.01.013
关键词: Phosphoric acid 、 Magnesium 、 Molar 、 Electronic microscopy 、 Phase (matter) 、 Molar ratio 、 Materials science 、 Cement 、 Nuclear chemistry 、 Hydrate
摘要: Abstract Large H2O/MgCl2 molar ratio is good to the soundness of magnesium oxychloride cement (MOC), but detrimental its strength development. In this paper, addition H3PO4 was used prepare MOC with high (≥20) and desirable It revealed by X-ray diffraction (XRD) scanning electronic microscopy (SEM) that primary hydrate ratios Mg(OH)2, in became 5MgO·MgCl2·8H2O (phase 5) presence small amount H3PO4. The reaction type MgO MgCl2 formation conditions phase 5 were both modified
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