Papers by Author: Juan Juan Li

Abstract: Dicalcium silicate, whose chemical formula is Ca₂SiO₄ = 2CaO·SiO₂, is a typical cementitious mineral phase, especially in Portland cement clinker. In the past, to study this mineral, it was common to use some conventional heating methods, e.g. flame heating, radiation heating etc. Whereas, in our study, the microwave (or MW in brief) heating method is used to synthesize this mineral, because MW heating method has several advantages in fabricating materials. In order to seek the characteristics of MW heating method in synthesizing this mineral, a conventional synthesizing method (i. e. electric radiation heating) is also used in our parallel experiments, so as to compare the results between experimental samples with both methods. All related samples are measured with XRD (X-ray diffraction) and SEM (scanning electron microscopy), then their results are discussed.

Abstract: The effects of a few added components, i.e. SnO2, Cr2O3 and Fe2O3, in porcelain glaze on thermal conductivity of porcelain glaze are studied in this paper. The thermal conductivities of several porcelain glaze samples with different contents of SnO2, Cr2O3 and Fe2O3 were measured with a special measuring apparatus at room temperature. The theoretical explanation for these measurement results is also sought according to the theory on heat transfer in solid materials, briefly.