Some New Perspective on the Reaction Mechanism of MgO–SiO 2 –H 2 O System
Source abstract
Abstract
The application of MgO–SiO 2 –H 2 O system, one of the most popular basic refractories, is greatly limited because of the hydration of MgO. In this work, the phase and morphological development of MgO–SiO 2 –H 2 O system during aging were analyzed using various techniques. It is found that Mg(OH) 2 initially appears and the amount increases after 10 days aging at room temperature. At elevated temperature, the heat treatment can facilitate the hydration reaction. Mg(OH) 2 covers the surface of silica fume particles. The combination product connects with each other and distributes homogeneously around MgO particles to produce M–S–H gels, which inhibit the further hydration.
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Research context
OpenAlex topics: Magnesium Oxide Properties and Applications · Advanced ceramic materials synthesis · Concrete and Cement Materials Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China
Collaborative Innovation Center of Steel Technology University of Science and Technology Beijing Beijing 100083 China
Funding
National Natural Science Foundation of China
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