Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Alite zoned crystals

G. Ammonium chloride (saturated, aqueous) colors a hexagonal section of alite (perpendicular to the threefold crystallographic axis) light yellow. The slender hexagonal section of alite (parallel to the caxis) is colored blue. Zoned crystals in the slender hexagonal section show light-blue cores and dark-blue rims. Ono (1995) recommends an... [Pg.12]

The chemical reactions of cement paste with zinc (galvanized steel) result in the release of zinc to the solution and the formation of calcium zincate, CaZn2(OH)g 2H2O, covering the surface of metal [49], Simultaneously, there is no portlandite crystals in this transition zone because in the presence of zinc alite hydration is delayed (see Sect. 4.1.3.2). The coating of hydrated calcium zincate crystals on the surface of metal increases the bonding forces between paste and reinforcement by the roughness formation on its surface. [Pg.387]

Alite—crystal size, optics, zoning, fringing, habit, crystal form ... [Pg.54]

Chen, Conjeaud, and Lehoux (1985) estimated burn ing zone temperatures with three techniques by burnability studies of the raw mix, by electron micro probe analysis of alite in clinker, and by birefringence of alite. The latter method was said to be the least accurate, due possibly to clinker magnesium oxide and sulfate contents, kinetics of alite crystallization from a melt, raw mix particle size, and variable calcination rates. [Pg.56]

Overall increase in crystal size alite more than belite, which tends toward yellow color Lowering of feed to speed ratio, thinning clinker bed depth as burning zone moves uphill (Rader, 1985)... [Pg.65]

Dusty clinker high porosity, breaded nodules, agglomerated fine particles, alite-rich, large alite crystals, and relatively scarce liquid phase (a) Decomposition of outer clinker shell and concentration of liquid phase in clinker core (Allegre and Terrier, 1960) (b) Recycling of precipitator dust, reducing zones, lack of AljOj in raw slurry (Hofmanner, 1973)... [Pg.66]

Zoned alite, normally Mj over M, boundaries marked by liquid Inoluslons Crystallization over wide range of temperatures slow heating rate (Maki and Goto, 1982)... [Pg.77]

Photograph 7-75 Brown prismatic (alkali-rich) aluminate crystals, some entrapping alite and appearing zoned or twinned along a prism face. Dry-process kiln. (S A6693)... [Pg.107]

See other pages where Alite zoned crystals is mentioned: [Pg.117]    [Pg.31]    [Pg.53]    [Pg.55]    [Pg.56]    [Pg.61]    [Pg.12]    [Pg.82]    [Pg.312]    [Pg.69]    [Pg.118]    [Pg.30]    [Pg.31]    [Pg.38]    [Pg.45]    [Pg.52]    [Pg.68]    [Pg.74]    [Pg.81]    [Pg.141]    [Pg.141]   
See also in sourсe #XX -- [ Pg.30 , Pg.31 , Pg.56 ]



SEARCH



Alite

© 2024 chempedia.info