Statistical analysis of mechanical properties for main cement phases by nanoindentation technique

2018 International Conference on Advanced Electronic Materials, Computers and Materials Engineering

材料科学;无线电电子学;计算机科学

Fu, Jia^1,2 ; Bernard, Fabrice^1 ; Kamali-Bernard, Siham^1 ; Cornen, Marilyne^3

LGCGM, National Institute of Applied Sciences, Rennes

35708, France^1

Material Science and Engineering, Xi'An Shiyou University, Xi'an

710065, China^2

UMR CNRS 6226, Institut Sciences Chimique de Rennes/Chimie-mé Allurgie, INSA de Rennes, Rennes Cedex 7

35708, France^3

关键词: Cement based material;    Cement paste;    Cement phasis;    Limestone filler;    Load-depth curves;    Microstructure and mechanical properties;    Nanoindentation techniques;    Young modulus;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/439/4/042018/pdf
DOI  :  10.1088/1757-899X/439/4/042018

来源: IOP

【 摘 要 】

This work focuses on mechanical properties of some phases of cement-based materials, portlandite (CH), calcite and clinker. Nano-indentation experiment is done on CSM instrument to verify the values of these cement pastes, Young moduli obtained by the averaged experimental load-depth curve is close to other references. The results show that: 1) the Young's modulus of CH averaged by nano-indentation experiment is 39.88GPa, which is in relative good agreement with the 40.30GPa by Constantinides, 36.00GPa by Acker and 45.95GPa by Laugesen. 2) By nano-indentation experiment, elastic moduli of CH, LD C-S-H, HD C-S-H, limestone filler and clinker are separately within the region of 38.8-50.6 GPa, 17.1-27.6GPa, 30.54-36.50 GPa, 79.8-90.6GPa and 94.26-114.18GPa. The elastic moduli are determined by experiment and the SEM image of these phases are verified, which is used to describe the microstructure and mechanical properties of this typical phases in cement paste.