Effect of CaO Content and Microstructure on Hydration Resistance of MgO-CaO Clinkers

Hua Zhi Gu; Hou Zhi Wang; Yan Ruo Hong; Jia Lin Sun; Wen Jie Zhang

doi:10.4028/www.scientific.net/KEM.280-283.1679

Paper Titles

Study on Corrosion Mechanism of CAS Glass-Ceramic to Refractories by EPMA
p.1663

Study of Thermal Shock Resistance of Sagger Plate Used in Floppy Magnets Sintering
p.1667

Preparation and Characterization of Al₂O₃ Coated Graphite Powders
p.1671

Colloidal Process of Magnesia-Carbon Refractory and Its Sintering Characteristic
p.1675

Effect of CaO Content and Microstructure on Hydration Resistance of MgO-CaO Clinkers
p.1679

β-SiAlON Bonded Corundum Material and Its Application as Sliding Gate Plate for Continuous Casting
p.1683

Corrosion Behavior of BF Slag to SiAlON Bonded Corundum Refractories
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Slurry Erosive Wear Characteristics of Engineering Ceramics for Hydraulic Machinery
p.1689

Oxidation Properties of Three Dimensional (3-D) Carbon Fiber Preform Coated by SiC-SiO₂
p.1693

HomeKey Engineering MaterialsKey Engineering Materials Vols. 280-283Effect of CaO Content and Microstructure on...

Effect of CaO Content and Microstructure on Hydration Resistance of MgO-CaO Clinkers

Abstract:

Hydration resistance of three commercially available high-purity MgO-CaO clinkers were investigated and compared in the present paper. The results show that, as well as CaO content, microstructural morphology of MgO–CaO clinker affects its hydration resistance. The microstructure in which CaO is present at the grain boundaries of MgO leads to poorer hydration resistance, whereas the one in which CaO and MgO are distributed alternately confers much improved hydration resistance on the clinker, especially when MgO level is high enough to cover most of the CaO crystals.