Determination of Tricalcium Silicates Crystal Forms in Belite-Barium Calcium Sulphoaluminate Cement

Abstract:

Chemical method of extraction was adopted in the study, and aqueous solution of potassium hydroxide and sucrose (KOSH) was used to obtain the clinker rich in silicate phases (alite and belite) in order to get the crystal forms of tricalcium silicates (C₃S) in the belite-barium calcium sulphoaluminate cement clinker. The crystal forms of C₃S were finally determined by XRD (X-ray diffraction) spectrums through its characteristic windows of the diffraction spectrums. Results shows that, C₃S exists in the innovative cement system mainly in the form of M1; C_2.75B_1.25A₃ can completely dissolve in KOSH solution while its dissolution is inhibited in the cement system; after KOSH treatment, diffraction peaks of C₄AF disappear totally and peaks of C₃A has weakened to great extent; for the cement clinker, the clinker ground for 90min has the best extraction rate.

• Periodical: Applied Mechanics and Materials (Volumes 541-542)
• Pages: 204-208
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.541-542.204
• Online since: March 2014
• Authors: Yan Ting Zhao, Xi Chen, Ling Chao Lu*, Yong Bo Huang, Jie Zhang
• Keywords: Crystal Forms, Extraction, KOSH, Tricalcium Silicate

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DOI: 10.1154/1.1523079