Subject of this paper is the effect of MoO~, Nh~O=, WO~ and Zr02 on the properties of clinker originated from raw mixes containins the above oxides. This effect was studied by means of differential scanning calorimetry, X-Ray diffraction, optical and scanning electron microscopy. Final discussion co
Investigation of the effect of Zn oxide on the formation of Portland cement clinker
โ Scribed by G. Kakali; G. Parissakis
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 417 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0008-8846
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โฆ Synopsis
Subject of this paper is to investigate the effect of ZnO during the sintering process of cement raw meal. The effect was studied by means of differential scanning calorimetry and X-ray diffraction. Besides, the rate of CaO consumption during the sintering of raw meals was measured. Final discussion concerns the action of the above oxide on raw material sintering and its incorporation in the phases of the clinker.
๐ SIMILAR VOLUMES
## ABSTP~ACT The relationship between specific power consumption (Id.~/t) and Blaine fineness attained during grinding of the Portland clinker is represented by an exponential function. This function varies by stages. For each stage the following equation may be written: In k~.~/t = a + bS, where
Six cements made from clinkers containing the phases C& CdA,,, C.+AF and CzS in different proportions and ground with different amounts of gypsum were studied with respect to their hydration kinetics as well as composition ans physico-mechanical properties of the hydrated material. Th3 obtained resu
The mineralizing effect of 0.5% F-as CaF on the high-temperature reactions in the quaternary system CaO-Al$OS-Fe20S-Si02 was studied in the presence of minor amounts of MgO and K2SO4. The partitioning of fluorine between the calcium aluminate and calcium silicate phases was detennined in relation to
Na20 and K20 in absence of S03 are incorporated preferentially into the C3A phase of portland clinker altering its modification from cubic to orthorhombic. The hydration of Na20 doped C3A is retarded and that of K20 doped C3A accelerated in the resultant cements. The progress of C3S hydration and st
Crystallization of a liquid similar to that present in Portland cement at clinkering temperatures has been studied. Its composition (in wt %) is CaO = 54.8, A~203 = 22.7, Fez03 = 16.5, Si02 = 6.0. Prolonged crystallization or slow cooling yields the equilibrium phases: C3A, ferrite close to C,AF, an