A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Alite-ye'elimite cement: Synthesis and mineralogical analysis
Alite-ye'elimite cement is an alternative cement that combines desirable characteristics of calcium sulfoaluminate cements and Portland cement in that it shows improved strength development at early age while retaining high portlandite contents. The key problem in the clinkering process is to produce the alite-ye'elimite phase assemblage so that both phases can co-exist. In this study, a new synthesis method is proposed to achieve the coexistence of alite and ye'elimite consisting of a secondary heat treatment step at 1250 °C after regular Portland clinker firing at 1450 °C. Quantitative X-ray powder diffraction and electron microscopy were used to analyze the phase composition of clinker before and after the secondary heat treatment. The results show that ye'elimite develops during secondary heat treatment of calcium sulphate enriched clinker by reaction of C3A and sulphate phases. Additional ferrite is formed as result of rejection of Fe originally in solid solution with C3A during ye'elimite formation.
Alite-ye'elimite cement: Synthesis and mineralogical analysis
Alite-ye'elimite cement is an alternative cement that combines desirable characteristics of calcium sulfoaluminate cements and Portland cement in that it shows improved strength development at early age while retaining high portlandite contents. The key problem in the clinkering process is to produce the alite-ye'elimite phase assemblage so that both phases can co-exist. In this study, a new synthesis method is proposed to achieve the coexistence of alite and ye'elimite consisting of a secondary heat treatment step at 1250 °C after regular Portland clinker firing at 1450 °C. Quantitative X-ray powder diffraction and electron microscopy were used to analyze the phase composition of clinker before and after the secondary heat treatment. The results show that ye'elimite develops during secondary heat treatment of calcium sulphate enriched clinker by reaction of C3A and sulphate phases. Additional ferrite is formed as result of rejection of Fe originally in solid solution with C3A during ye'elimite formation.
Alite-ye'elimite cement: Synthesis and mineralogical analysis
Ma, Suhua (author) / Snellings, Ruben (author) / Li, Xuerun (author) / Shen, Xiaodong (author) / Scrivener, Karen L. (author)
Cement and Concrete Research ; 45 ; 15-20
2013
6 Seiten, 23 Quellen
Article (Journal)
English
Alite-ye'elimite cement: Synthesis and mineralogical analysis
| Elsevier | 2012
Alite-ye'elimite cement: Synthesis and mineralogical analysis
| Online Contents | 2013
Alite-ye'elimite cement: Synthesis and mineralogical analysis
| British Library Online Contents | 2013