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

LÜ Shenghua; ZHANG Jia; ZHU Linlin; JIA Chunmao

doi:10.11949/j.issn.0438-1157.20161575

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

更新时间：2025-12-10

- Regulation of graphene oxide on microstructure of cement composites and its impact on compressive and flexural strength
- CIESC Journal Issue 6, Pages: 2585-2595(2017)
- 作者机构：
  
  1. 陕西科技大学轻工科学与工程学院,陕西,西安,710021
  2. 陕西科技大学环境科学与工程学院,陕西,西安,710021
  3. 陕西科技大学化学与化工学院,陕西,西安,710021
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20161575
  CLC： U528.572
- Online First：05 June 2017，
  
  Published：05 June 2017
- 稿件说明：
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LÜ Shenghua, ZHANG Jia, ZHU Linlin, et al. Regulation of graphene oxide on microstructure of cement composites and its impact on compressive and flexural strength[J]. CIESC Journal, 2017, (6): 2585-2595.
DOI：

LÜ Shenghua, ZHANG Jia, ZHU Linlin, et al. Regulation of graphene oxide on microstructure of cement composites and its impact on compressive and flexural strength[J]. CIESC Journal, 2017, (6): 2585-2595. DOI： 10.11949/j.issn.0438-1157.20161575.

摘要

通过氧化法制备得到氧化石墨烯（GO），通过GO与丙烯酸（AA）和丙烯酰胺（AM）进行插层聚合反应制备得到插层复合物GO/P（AA-AM）。检测结果表明，GO在插层复合物中具有较小的尺寸和均匀的分布，将GO/P（AA-AM）掺入水泥基复合材料中，发现水泥水化产物成为规整的针状、棒状或多面体状晶体，并且能够聚集形成具规整形貌的微观结构和宏观结构，水泥基复合材料中的裂缝及有害孔洞比对照样品明显减少，其抗压强度和抗折强度比对照样品有明显提高。提出了GO纳米片层对于水泥基复合材料规整结构的调控机理，认为GO纳米片层及活性基团能够促进水泥化产物形成规整形状的水化晶体，最初形成的水化晶体成为后续水化晶体形成的模板，通过晶体的生长最终形成规整水化晶体及规整的微观结构和宏观结构。

Abstract

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.

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