Regulation of graphene oxide on microstructure of cement composites and its impact on compressive and flexural strength

被引：0
|
作者：
Lü S. [1 ]
Zhang J. [2 ]
Zhu L. [1 ]
Jia C. [3 ]
机构：
[1] College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, Shaanxi
[2] College of Environment Science and Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, Shaanxi
[3] College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, Shaanxi
来源：
Huagong Xuebao/CIESC Journal | 2017年 / 68卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Agglomeration; Cement hydration crystals; Composites; Graphene oxide; Microstructure; Nanomaterials;
D O I：
10.11949/j.issn.0438-1157.20161575
中图分类号：
学科分类号：
摘要：
Graphene oxide (GO) was prepared by oxidation, and the intercalation composite of GO/P(AA-AM) was prepared by intercalation polymerization of GO with acrylic acid(AA) and acrylamide (AM). The testing results indicated that GO nanosheets in the GO/P(AA-AM) had smaller size and uniform dispersion. Meanwhile, it is found that GO nanosheets can regulate the cement hydration products to form regular needle-like, rod-like, or polyhedron-like crystal, also ordered microstructure and macrostructure. The cracks and harmful pores in the cement composites have obviously decreased. The compressive and flexural strength have significant increase compared with the control samples. The regulation mechanism of GO nanosheets on cement hydration crystals and the microstructure of cement composites were proposed. It thinks that GO nanosheets with active chemical groups have the promoting and template effects on forming regular shapes of cement hydration crystals. The initial regular crystals play a template role for later formed crystals, and finally form large-volume and regular shape crystals and ordered microstructure and macrostructure by crystals growing. © All Right Reserved.
引用
收藏
页码：2585 / 2595
页数：10
相关论文
共 35 条
  • [1] Guoxing S., Rui L., Zeyu L., Et al., Mechanism of cement/carbon nanotube composites with enhanced mechanical properties achieved by interfacial strengthening, Construction and Building Materials, 115, pp. 87-92, (2016)
  • [2] Li Z., Xin L.G., Chuang G., Et al., Investigation of the effectiveness of PC@GO on the reinforcement for cement composites, Construction and Building Materials, 113, pp. 470-478, (2016)
  • [3] Xie X., Zhou Z., Jiang M., Et al., Cellulosic fibers from rice straw and bamboo used as reinforcement of cement-based composites for remarkably improving mechanical properties, Composites Part B: Engineering, 78, pp. 153-161, (2015)
  • [4] Corsaro A., Chiacchio M.A., Pistara V., Regeneration of carbonyl compounds from the corresponding oximes: an update until to 2008, Current Organic Chemistry, 13, 5, pp. 482-501, (2009)
  • [5] Ghatefar A., El-Salakawy E., Bassuoni M.T., Early-age restrained shrinkage cracking of GFRP-RC bridge deck slabs: effect of environmental conditions, Cement and Concrete Composites, 64, pp. 62-73, (2015)
  • [6] Lameiras R., Barros J.A.O., Azenha M., Influence of casting condition on the anisotropy of the fracture properties of steel fibre reinforced self-compacting concrete (SFRSCC), Cement and Concrete Composites, 59, pp. 60-76, (2015)
  • [7] Wang J.J., Basheer P.A.M., Nanukuttan S.V., Influence of service loading and the resulting micro-cracks on chloride resistance of concrete, Construction and Building Materials, 108, pp. 56-66, (2016)
  • [8] Shen D.J., Jiang J.L., Shen J.X., Influence of curing temperature on autogenous shrinkage and cracking resistance of high-performance concrete at an early age, Construction and Building Materials, 103, pp. 67-76, (2016)
  • [9] Wille K., Naaman A.E., Ei-Tawil S., Et al., Ultra-high performance concrete and fiber reinforced concrete: achieving strength and ductility without heat curing, Materials and Structures, 45, 3, pp. 1-16, (2012)
  • [10] Li M., Yang Y.J., Guo X.Y., Mechanical properties of carbon fiber reinforced oil well cement composites, Acta Materiae Compositae Sinica, 32, 3, pp. 782-788, (2015)
1234