Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Microstructure and properties of the binder of fly ash-fluorogypsum-Portland cement
The hydration process, mortar microstructure, and properties of the binder consisting of fly ash, fluorogypsum, and Portland cement were investigated with X-ray diffraction, differential thermal analysis, scanning electron microscopy with energy dispersing spectrum, and mercury intrusion porosimetry. Its major hydrates are hydraulic gypsum solid solution, CSH gel, and ettringite. The addition of alum activator enhanced the formation of ettringite and the transformation of anhydrite into gypsum. They intermix uniformly to form a dense mortar structure with very low porosity and low proportion of large pores. The binder shows high strength, good volume stability, and excellent water resistance. The properties of the binder can be adjusted by the quantity of alum added to prepare shrinkage-free or microexpansive concrete.
Microstructure and properties of the binder of fly ash-fluorogypsum-Portland cement
The hydration process, mortar microstructure, and properties of the binder consisting of fly ash, fluorogypsum, and Portland cement were investigated with X-ray diffraction, differential thermal analysis, scanning electron microscopy with energy dispersing spectrum, and mercury intrusion porosimetry. Its major hydrates are hydraulic gypsum solid solution, CSH gel, and ettringite. The addition of alum activator enhanced the formation of ettringite and the transformation of anhydrite into gypsum. They intermix uniformly to form a dense mortar structure with very low porosity and low proportion of large pores. The binder shows high strength, good volume stability, and excellent water resistance. The properties of the binder can be adjusted by the quantity of alum added to prepare shrinkage-free or microexpansive concrete.
Microstructure and properties of the binder of fly ash-fluorogypsum-Portland cement
Yan, Pei-Yu (Autor:in) / Yang, Wenyan (Autor:in) / Qin, Xiao (Autor:in) / You, Yi (Autor:in)
Cement and Concrete Research ; 29 ; 349-354
1999
6 Seiten, 11 Quellen
Aufsatz (Zeitschrift)
Englisch
Microstructure and properties of the binder of fly ash-fluorogypsum-Portland cement
| British Library Online Contents | 1999
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