伯利特
偏高岭土
抗压强度
材料科学
微观结构
水泥
复合材料
复合数
扫描电子显微镜
硅酸盐水泥
熟料(水泥)
作者
Xingyi Wang,Peide Han,Shiwei Niu,Bin He,Fuli Ma,Tiantian Guo,Jinchuan Xu
标识
DOI:10.1007/s11595-023-2703-7
摘要
The effects of coal metakaolin on the mechanical properties of high-belite sulphoaluminate cement under compressive loading were investigated. The composition and microstructure of hydration products at different hydration times were analyzed by X-ray diffraction and scanning electronic microscopy. The hydration process of blended cement was studied via electrochemical impedance spectroscopy. In particular, replacing a part of cement with CMK (10%, 20%, and 30%) was found to promote the hydration process, to refine the pore size, and to improve the compressive strength of the composite. The best compressive strength of the cement was achieved at a CMK content of 30% after 28 days hydration, being improved by 20.13 MPa, or 1.44 times relative to that of undoped specimens. Furthermore, the compressive strength is shown to correlate with the impedance parameter RCCP, which allows the latter to be used for nondestructive assessment of the compressive strength of blended cement materials.
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