| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Material Parameters and Anisotropy Research of 3D Printing Mortar After Incorporating with Aeolian Sand |
| ZHOU Gangming1, HANG Meiyan1,*, LU Lan2, WANG Hao1, JIANG Minghui1
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1 School of Civil Engineering,Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia, China
2 Hangzhou Guanli Intelligent Technology Co., Ltd., Hangzhou 311200, China |
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Abstract On the basis of a lager number of the previous research, the mix proportions of two groups of aeolian sand 3D printing mortar were obtained, the material parameters were tested by 3D printing test, and the anisotropy of printed specimens was studied in this study. The results indicated that the 3D printing mortar of the two groups of aeolian sand showed better printing performance, the flexural strength of mortar after curing for 28 d was slightly lower than that of the reference group 3D printing mortar, the compressive strength of mortar was sligthtly higher than that of the reference group 3D printing mortar. Meanwhile, when the printing process parameters of the materials were the same, the anisotropy of spe-cimens existed same law; when the material proportion was different, the dispersion degree of anisotropy was different and changed with different curing ages. Moreover, the bond state of fiber interface and aggregate interface was investigated by the scanning electron microscope (SEM) test, and the result showed that the surface of polypropylene fiber was smooth and the bond with cement stone was poor; the surface of aeolian sand attached to more hydration products, and it showed good bonding with cement stones.
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Published: 10 May 2022
Online: 2022-05-09
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2022, Vol. 36 
