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氧化石墨烯对水泥基复合材料微观结构和力学性能的影响

王琴 王健 吕春祥 刘伯伟 张昆 李崇智

王琴, 王健, 吕春祥, 刘伯伟, 张昆, 李崇智. 氧化石墨烯对水泥基复合材料微观结构和力学性能的影响[J]. 新型炭材料, 2015, 30(4): 349-356. doi: 10.1016/S1872-5805(15)60194-9
引用本文: 王琴, 王健, 吕春祥, 刘伯伟, 张昆, 李崇智. 氧化石墨烯对水泥基复合材料微观结构和力学性能的影响[J]. 新型炭材料, 2015, 30(4): 349-356. doi: 10.1016/S1872-5805(15)60194-9
WANG Qin, WANG Jian, LU Chun-xiang, LIU Bo-wei, ZHANG Kun, LI Chong-zhi. Influence of graphene oxide additions on the microstructure and mechanical strength of cement[J]. NEW CARBOM MATERIALS, 2015, 30(4): 349-356. doi: 10.1016/S1872-5805(15)60194-9
Citation: WANG Qin, WANG Jian, LU Chun-xiang, LIU Bo-wei, ZHANG Kun, LI Chong-zhi. Influence of graphene oxide additions on the microstructure and mechanical strength of cement[J]. NEW CARBOM MATERIALS, 2015, 30(4): 349-356. doi: 10.1016/S1872-5805(15)60194-9

氧化石墨烯对水泥基复合材料微观结构和力学性能的影响

doi: 10.1016/S1872-5805(15)60194-9
基金项目: 北京市教委基金(KM201510016003); 北京高校创新团队建设与教师职业发展计划项目(IDHT2013);国家自然科学基金(51408622);北京市自然科学基金(8144043).
详细信息
    通讯作者:

    王琴,讲师.E-mail:wangqin@bucea.edu.cn

  • 中图分类号: TB332

Influence of graphene oxide additions on the microstructure and mechanical strength of cement

Funds: Beijing Municipal Commission of Education(KM201510016003); Beijing College Innovation Team-building and Teacher Career Development Project (IDHT2013); State Natural Sciences Foundation (51408622); Beijing Natural Sciences Foundation (8144043).
  • 摘要: 研究了不同掺量下氧化石墨烯(GO)对水泥石以及胶砂微观结构和力学性能的影响。含16.5%水的水泥浆、0.05%GO及3倍于水泥的沙子共混物作为添加剂制备成砂浆。通过SEM、液氮吸附仪和一系列标准实验分别对水泥石的微观形态、孔隙结构、抗压抗折强度以及水泥净浆的流动度、黏度、凝结时间进行表征;考察不同GO掺量下水泥水化放热的变化情况。结果表明:GO对水泥浆有显著增稠和促凝作用;GO的掺入可以有效降低水泥的水化放热量;GO对水泥石有显著的增强增韧效果,28天龄期时,GO质量分数为0.05%的水泥石,3、7和28 d抗压强度和抗折强度同比对照组分别增加52.4%、46.5%、40.4%和86.1%、68.5%、90.5%,胶砂的抗压强度和抗折强度同比对照组分别增加43.2%、33%、24.4%和69.4%、106.4%、70.5%;GO在水泥硬化过程中对水泥石中晶体产物的产生有促进作用并能规整晶体的排布而形成针状晶体簇,改善水泥石中的孔结构,降低水泥石中微孔的体积,增加水泥石的密实度,对水泥石有显著地增强增韧效果。
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出版历程
  • 收稿日期:  2015-04-20
  • 录用日期:  2015-09-07
  • 修回日期:  2015-08-01
  • 刊出日期:  2015-08-28

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