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- Title
少层石墨烯对水泥净浆流动性能及力学性能 的影响.
- Authors
何威; 许吉航; 焦志男
- Abstract
The effects of few-layer graphene (FLG) on the fluidity and mechanical properties (compressive strength and flexural strength) of cement paste were systematically studied. The mechanism of the effect of FLG on the mechanical properties of cement paste was analyzed by SEM, XRD and EDS. Meanwhile, the layers and structures of FLG were characterized by AFM, Raman and SEM techniques. The results show that the number of FLG layers is 3-6, showing a hexagonal honeycomb structure with interlayer stacking. The incorporation of FLG can reduce the fluidity of the paste. The 3 days and 28 days compressive strength values of the paste increase by 27.84% and 13.52%, respectively, and the 3 days and 28 days flexural strength values increase by 12.92% and 19.68%, respectively. The template effect of FLG can promote the growth of cement hydration products, change the shape and size of hydration crystals, and make it form a complete and dense trend, and make the paste structure more dense.
- Subjects
FLEXURAL strength; HONEYCOMB structures; SCANNING electron microscopy; COMPRESSIVE strength; CEMENT; PASTE
- Publication
Acta Materiae Compositae Sinica, 2022, Vol 39, Issue 11, p5637
- ISSN
1000-3851
- Publication type
Article
- DOI
10.13801/j.cnki.fhclxb.20211112.001