It hydrates significantly slower than
alite, but continues contributing to strength development for many years.
Compound Formula Notation wt.% Celite [Ca.sub.3] [C.sub.3]A 10 (tricalcium [Al.sub.2] [O.sub.6] aluminate) [3CaO x [Al.sub.2] [O.sub.3]] Brownmillerite [Ca.sub.4] [C.sub.4]AF 8 (tetracalcium [Al.sub.2] aluminoferrite) [Fe.sub.2] [O.sub.10] [4CaO x [Al.sub.2] [O.sub.3] x [Fe.sub.2] [O.sub.3]] Belite (dicalcium [Ca.sub.2] [C.sub.2]S 20 silicate) Si[O.sub.4] [2CaO x Si[O.sub.2]]
Alite (tricalcium [Ca.sub.3]Si [C.sub.3]S 55 silicate) [O.sub.5] [3CaO x Si[O.sub.2]] Sodium oxide [Na.sub.2]O N [less than or equal to] 2 Potassium oxide [K.sub.2]O K Gypsum (calcium CaS[O.sub.4] x CS[H.sub.2] 5 sulphate 2[H.sub.2]O [CaO x dihydrate) S[O.sub.3] x 2[H.sub.2]O] Adapted from [2]; http://www.engr.psu.edu/ce/courses/ ce584/concrete/library/construction/curing/ Composition%20of%20cement.htm.
The
alite is the most abundant mineral in Portland cement at 40-60% of the total.
The anhydrate calcium silicate of
alite and belite phases, detected in initially set materials at =940, 515, and 456 [cm.sup.-1] [22], decreased and shifted to 996, 524, and 449 [cm.sup.-1], respectively.
The remaining possibility to reduce the emissions from the sintering process consists in modification of the phase composition of clinker (
alite reduction).
Vendredi passe, Chabane Ouahioune,
alite depuis longtemps et quelque peu oublie, n'avait pas assiste a une ceremonie similaire dans son village natal .
1) demonstrated the presence of tricalcium silicate (
alite) as the primary clinker phase, as postulated previously by Henri Le Chatelier [2, 3] and observed by Tornebohm [4], and also indicated phases that are now called belite (dicalcium silicate), tricalcium aluminate, ferrite, and periclase.
His notable creations include a line of men's no necktie dress shirts, and vest look from his "
Alite" Collection.
In the first of two programmes McDonald arrives in New York, where he meets John
Alite.
John
Alite was released from prison after 10 years and now lives in his son's apartment.
John
Alite was released from prison after 10 years inside and now lives in his son's apartment.
