A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Active sulfate-rich belite sulfoaluminate cement
This work focuses on the activation of belite to improve the strength development of sulfate-rich belite sulfoaluminate cements. Borax was used to act as an activator to promote stabilisation of high-temperature belite polymorphs. The phase compositions of clinkers were analysed by using quantitative X-ray powder diffraction. The transformation of β -belite (C 2 S) to α '-C 2 S mainly depends on the dosage of borax, and the change in polymorphs is almost complete when the dosage of borax reaches 5%. The formation of α '-C 2 S can significantly increase the compressive strength and the concentration of borax has a great effect on the strength development of the activated cements. The hydration products of activated cements were also investigated. The results show that the activation of belite can promote the formation of ettringite. Moreover, the crystallisation of ettringite is also affected by the polymorphs of belite, and a fine microstructure of ettringite is found in the activated cement paste.
Active sulfate-rich belite sulfoaluminate cement
This work focuses on the activation of belite to improve the strength development of sulfate-rich belite sulfoaluminate cements. Borax was used to act as an activator to promote stabilisation of high-temperature belite polymorphs. The phase compositions of clinkers were analysed by using quantitative X-ray powder diffraction. The transformation of β -belite (C 2 S) to α '-C 2 S mainly depends on the dosage of borax, and the change in polymorphs is almost complete when the dosage of borax reaches 5%. The formation of α '-C 2 S can significantly increase the compressive strength and the concentration of borax has a great effect on the strength development of the activated cements. The hydration products of activated cements were also investigated. The results show that the activation of belite can promote the formation of ettringite. Moreover, the crystallisation of ettringite is also affected by the polymorphs of belite, and a fine microstructure of ettringite is found in the activated cement paste.
Active sulfate-rich belite sulfoaluminate cement
Shen, Yan (author) / Yang, Dingyi / Zhang, Ming / Qian, Jueshi
2017
Article (Journal)
English
Active sulfate-rich belite sulfoaluminate cement
| Online Contents | 2017
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