Some microstructure properties at early age of ettringite binder based on rich C12A7 calcium aluminate cement
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منابع مشابه
The Hydration Products of a Refractory Calcium Aluminate Cement at Intermediate Temperatures
The major hydraulic phase in all the calcium aluminate cements including ciment fondue is CA (CaAl2O4). Once hydrated, it starts to form the hexagonal crystals of CAH10 and C2AH8 that depending on the time and temperature of hydration convert to the cubic crystals of C3AH6 and AH3. The nature, sequence, ...
متن کاملThe Hydration Products of a Refractory Calcium Aluminate Cement at Low Temperatures
Calcium aluminates (CA) are the most important hydraulically setting cements used for preparing refractory castables, because they develop high strength at very early ages after placements. The anhydrous phases of this kind of cements are CA, CA2 and traces of C12A7 and alpha-alumina. The major hydraulic phase in all of the CA cements including ciment fondu...
متن کاملInvestigation of the effect of phosphate on the physical and microstructural properties of synthetic calcium aluminate cement
The aim of this study was to investigate the synthesis of calcium aluminate cement with and without phosphate additive by combustion synthesis. After preparing the gel from a solution containing aluminum and calcium nitrates and glycine fuel and ammonium dihydrogen Phosphate, its combustion was performed at 400 ° C. X-ray diffraction pattern and thermal analysis of the combustion sample showed...
متن کاملInfluence of Mixing Liquid on the Properties of Calcium Aluminate Cement
The effect of using Na2HPO4 solution as mixing liquid in the physicochemical and mechanical properties of calcium aluminate cement (CAC), with a view to a possible reinforcement additive of conventional α-TCP-based CPC was studied. The results showed that the degree of the hydration reaction of CaAl2O4 (CA) increased when Na2HPO4 solution was used as mixing liquid. The porosity of cement was al...
متن کاملLimestone reaction in calcium aluminate cement–calcium sulfate systems
Article history: Received 18 June 2014 Accepted 7 May 2015 Available online xxxx
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ژورنال
عنوان ژورنال: Journal of Science and Technology in Civil Engineering (STCE) - NUCE
سال: 2018
ISSN: 1859-2996,1859-2996
DOI: 10.31814/stce.nuce2018-12(3)-05