Hydration of Strontium-doped Monocalcium Aluminate

Prodjosantoso, Anti Kolonial; Septiani,; Utomo, M. Pranjoto; Budiasih, Kun Sri

doi:10.13005/ojc/340148

Cited by 3 publications

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“…At ordinary temperature, the only stable hydrates are C 3 AH 6 and AH 3 . At temperatures below 50°C, the metastable phases are formed [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…The cubic form was produced from C 1-x Sr x Al 2 O 4 (the product of hydration was Sr-doped C 3 AH 6 ), Ca 7 ZrAl 6 O 18 (formation of C 3 AH 6 was strongly dependent on particle size and surface area), C 2 AH 8 (in the presence of polycarboxylic acid type waterreducer), in the presence of two doped nano-additives Fe-TiO 2 and V-TiO 2 , C 4 AF, mixture of Portland cement and CAC, industrial CAC containing CA and CA 2 , C 2 AH 8 and CAH 10 with different amount of Al 2 O 3 . Fine nodules of C 3 AH 6 were obtained from C 2 AH 8 ; the granular-shaped crystals from C 2 AH 8 (in the presence of alumina powder) and 10-100 nm layered nano-particles [4,8,[15][16][17][18][19][20][21][22][23]. Moreover, some authors reported that the presence of gypsum, deflocculants on the basis of polycarbonate ethers and the carbonation process was a favorable factor to give C 3 AH 6 [24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

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Structure, microstructure and thermal stability characterizations of C3AH6 synthesized from different precursors through hydration

Litwinek

Madej

2019

J Therm Anal Calorim

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In this paper, the influence of precursors (CA, C 7 A 3 Z, C 12 A 7 , C 6 SrA 3 Z, C 7 A 2 FZ and commercial calcium aluminate cement 'Gorkal 70') on the structure, microstructure and thermal stability characterizations of C 3 AH 6 through hydration was investigated. The materials were characterized by X-ray diffraction, differential thermal analysis-thermogravimetric analysis-evolved gas analysis and scanning electron microscopy combined with energy-dispersive spectroscopy 24 h and 72 h after starting the hydration process. Results of investigation confirmed the influence of precursor on shape and grain size of C 3 AH 6 . The CaO/Al 2 O 3 mass ratio of precursors before the hydration process affects the size of C 3 AH 6 crystals: the higher the CaO/Al 2 O 3 value, the larger the size of the crystals of C 3 AH 6 . Moreover, the presence of Sr and Fe affects the formation of stable C 3 AH 6 crystals.

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“…At ordinary temperature, the only stable hydrates are C 3 AH 6 and AH 3 . At temperatures below 50°C, the metastable phases are formed [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%