Mechanical properties and microstructure of nano-ZrO2 reinforced cementitious composites

2nd International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Lu, Shichao^1 ; Wang, Xiaoyan^1 ; Ke, Yangchuan^1

Nanochemistry Key Laboratory of China National Petroleum Corporation, College of Science, State Key Lab of Heavy Oil Processing, China University of Petroleum, Beijing, China^1

关键词: Cement slurry;    Cement stones;    Cementitious composites;    Microstructure analysis;    Properties and microstructures;    Reinforced cementitious composites;    Rheological property;    Uniaxial stress;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/490/2/022070/pdf
DOI  :  10.1088/1757-899X/490/2/022070

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

A series of nano-ZrO2 reinforced cementitious composites were prepared through mixing prepared nano-ZrO2 suspension with Class G oil well cement in rotary mixer. The rheological properties of cement slurry, the mechanical properties and microstructure of cementitious composites were studied. The results indicated that the addition of nano-ZrO2 below 1 wt% meet the requirements of cementing construction. The early compressive strength of cement stone for 1 day was about 35.6 MPa∼41.8 MPa when the amount of nano-ZrO2 was 0.05 wt%∼1 wt%. The elastic modulus of nano-ZrO2 cement stone was 8.14 GPa under uniaxial stress state. Microstructure analysis revealed that nano-ZrO2 could enhance the toughness of cement paste.