石墨烯-羧基化碳纳米管水泥基复合材料的高温力学性能研究

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发布时间：2020-01-06 00:00:00

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石墨烯-羧基化碳纳米管水泥基复合材料的高温力学性能研究

Study on Mechanical Properties of Graphene-carboxylated Carbon Nanotube Cement-based Composites at High Temperature

2023年第2期

石墨烯；羧基化碳纳米管；水泥基复合材料；抗压强度；抗折强度；耐高温性能

Graphene; Carboxylated carbon nanotube; Cement-based composites; Compressive strength; Flexural strength; High temperature resistance

2023年第2期

10.19761/j.1000-4637.2023.02.033.05

江苏省新型环保重点实验室开放基金资助项目（JBGS031）；江苏省自然科学基金项目（BK20220694）；盐城工学院校级科研项目（xjr2021009）；中铁城建集团项目[CJ01-FJ-YCDLDCCF-2020-（ZYFB）00026]。

王小凡，朱华，赵乙丁，鲍溢

盐城工学院土木建筑工程学院，江苏盐城 224051

王小凡，朱华，赵乙丁，鲍溢

王小凡,朱华,赵乙丁,等.石墨烯-羧基化碳纳米管水泥基复合材料的高温力学性能研究[J].混凝土与水泥制品,2023(2):33-38.

WANG X F,ZHU H,ZHAO Y D,et al.Study on Mechanical Properties of Graphene-carboxylated Carbon Nanotube Cement-based Composites at High Temperature[J].China Concrete and Cement Products,2023(2):33-38.

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摘要：测试了不同质量比的石墨烯-羧基化碳纳米管（G-CNT）水泥基复合材料在25、200、400、600 ℃下的质量损失、抗压强度和抗折强度。结果表明：400 ℃以内，添加G-CNT复合材料后水泥基复合材料的残余力学性能显著提高，对质量损失的影响较小，水泥基复合材料的耐高温性能提高；400 ℃时，掺入0.10%CNT和0.05%G的水泥基复合材料的抗压强度仅下降了21.43%；400~600 ℃时，结合XRD和SEM结果可知，水泥基复合材料的微观结构严重破坏，力学性能显著下降；G5C10组为最佳配比，25~400 ℃时，在最佳配比下，G、CNT复掺后可以延缓或抑制因为高温爆裂引起的微孔隙和裂缝的扩散，形成致密化结构，进而提高水泥基复合材料的耐高温性能。 Abstract: The effects of different mass ratio of graphene-carboxylated carbon nanotubes(G-CNT) on the mass loss and mechanical properties of cement-based composites at 25, 200, 400 and 600 ℃ were studied. The results show that within 400 ℃, the residual mechanical properties of cement-based composites are significantly improved after adding G-CNT composites, but the impact on mass loss is small, and the high temperature resistance of cement-based composites is improved. At 400 ℃, the compressive strength of cement-based composites with 0.10% CNT and 0.05% G decreases by only 21.43%. At 400~600 ℃, combined with XRD and SEM results, it can be seen that the microstructure of cement-based composites is seriously damaged and its mechanical properties are significantly reduced. G5C10 is the optimal ratio. At 25~400 ℃, under the optimal ratio, G-CNT can delay or inhibit the diffusion of micropores and cracks caused by high temperature explosion, and form a densified structure, thereby improving the high temperature resistance of cement-based composites.

英文名 : Study on Mechanical Properties of Graphene-carboxylated Carbon Nanotube Cement-based Composites at High Temperature

刊期 : 2023年第2期

关键词 : 石墨烯；羧基化碳纳米管；水泥基复合材料；抗压强度；抗折强度；耐高温性能

Key words : Graphene; Carboxylated carbon nanotube; Cement-based composites; Compressive strength; Flexural strength; High temperature resistance

刊期 : 2023年第2期

DOI : 10.19761/j.1000-4637.2023.02.033.05

文章编号 :

基金项目 : 江苏省新型环保重点实验室开放基金资助项目（JBGS031）；江苏省自然科学基金项目（BK20220694）；盐城工学院校级科研项目（xjr2021009）；中铁城建集团项目[CJ01-FJ-YCDLDCCF-2020-（ZYFB）00026]。

作者 : 王小凡，朱华，赵乙丁，鲍溢

单位 : 盐城工学院土木建筑工程学院，江苏盐城 224051

王小凡，朱华，赵乙丁，鲍溢

王小凡,朱华,赵乙丁,等.石墨烯-羧基化碳纳米管水泥基复合材料的高温力学性能研究[J].混凝土与水泥制品,2023(2):33-38.

WANG X F,ZHU H,ZHAO Y D,et al.Study on Mechanical Properties of Graphene-carboxylated Carbon Nanotube Cement-based Composites at High Temperature[J].China Concrete and Cement Products,2023(2):33-38.

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参考文献

引用本文

Abstract: The effects of different mass ratio of graphene-carboxylated carbon nanotubes(G-CNT) on the mass loss and mechanical properties of cement-based composites at 25, 200, 400 and 600 ℃ were studied. The results show that within 400 ℃, the residual mechanical properties of cement-based composites are significantly improved after adding G-CNT composites, but the impact on mass loss is small, and the high temperature resistance of cement-based composites is improved. At 400 ℃, the compressive strength of cement-based composites with 0.10% CNT and 0.05% G decreases by only 21.43%. At 400~600 ℃, combined with XRD and SEM results, it can be seen that the microstructure of cement-based composites is seriously damaged and its mechanical properties are significantly reduced. G5C10 is the optimal ratio. At 25~400 ℃, under the optimal ratio, G-CNT can delay or inhibit the diffusion of micropores and cracks caused by high temperature explosion, and form a densified structure, thereby improving the high temperature resistance of cement-based composites.

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