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[1]陈亚兵,严泽稷,鲁 娅,等.硅灰与氧化石墨烯对硬化水泥浆体的复合增强效应[J].武汉工程大学学报,2017,39(05):471-476.[doi:10. 3969/j. issn. 1674?2869. 2017. 05. 012]
 CHEN Yabing,YAN Zeji,LU Ya,et al.Compound Enhancement Effect of Silica Fume and Graphene Oxide on Hardened Cement Paste[J].Journal of Wuhan Institute of Technology,2017,39(05):471-476.[doi:10. 3969/j. issn. 1674?2869. 2017. 05. 012]
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
39
期数:
2017年05期
页码:
471-476
栏目:
材料科学与工程
出版日期:
2017-12-19

文章信息/Info

Title:
Compound Enhancement Effect of Silica Fume and Graphene Oxide on Hardened Cement Paste
文章编号:
20170512
作者:
陈亚兵1严泽稷2鲁 娅3林 康1李月星1张 芳1*
1. 武汉工程大学材料科学与工程学院,湖北 武汉 430205; 2. 中国地质大学工程学院,湖北 武汉 430074; 3. 武汉源锦商品混凝土有限公司,湖北 武汉 430064
Author(s):
CHEN Yabing1YAN Zeji2LU Ya3LIN Kang1LI Yuexing 1 ZHANG Fang 1*
1.School of Materials Science and Engineering,Wuhan Institute of Technology, Wuhan 430205, China; 2. School of Engineering,China University of Geosciences, Wuhan 430074, China; 3. Wuhan Yuanjin Reddy-mixed Concrete Co., LTD, Wuhan 430064, China
关键词:
氧化石墨烯复合聚羧酸减水剂硅灰复合增强
Keywords:
graphene oxide/polycarboxylate superplasticizer silica fume compound enhancement
分类号:
TU599
DOI:
10. 3969/j. issn. 1674?2869. 2017. 05. 012
文献标志码:
A
摘要:
研究了硅灰与氧化石墨烯复掺时对硬化水泥浆体力学性能的影响. 分别进行了普通水泥浆体、内掺质量分数10%的硅灰水泥、外掺质量分数0.8%的氧化石墨烯复合聚羧酸减水剂(GOPCs)水泥浆体以及同时内掺硅灰与外掺GOPCs的水泥浆体的配制. 对4种硬化水泥浆体的抗折强度、抗压强度以及90 d龄期孔隙率进行了测定,同时采用X射线衍射仪及扫描电子显微镜对水泥水化产物进行分析,并将4种样品的力学性能进行比较. 结果表明,当掺10%硅灰时,硬化水泥浆体90 d抗压强度比空白样提高了3.6%,抗折强度提高了9.6%;当只使用氧化石墨烯复合聚羧酸减水剂而不掺硅灰时,抗压强度提高了11.9%,抗折强度提高了15.3%;当硅灰与氧化石墨烯复掺时,抗压强度提高了22.7%,抗折强度提高了38.6%. 孔隙率的变化以及XRD、SEM分析证实了这一结果. 因此,硅灰与氧化石墨烯复合聚羧酸减水剂对硬化水泥浆体具有复合增强作用.
Abstract:
The influences of silica fume and graphene oxide on the mechanical property of hardened cement paste were investigated. First,the ordinary cement pastes were prepared. Then the cement pastes were prepared using 10% mass fraction of silica fume,0.8% mass fraction of graphene oxide/polycarboxylate superplasticizer (GOPCs) and silica fume/GOPCs respectively. The flexural strength,compressive strength,porosity of the samples have been tested on the 90th day. The hydration products of the samples were characterized by X-ray diffraction(XRD) and scanning electron microscopy(SEM). The results show that the compressive strength and flexural strength of hardened cement paste with silica fume,GOPCs and fume/GOPCs composite respectively increase by 3.6% and 9.6%,11.9% and 15.3%,and 22.7% and 38.6% compared with those of the ordinary hardened cement paste. The results were demonstrated by the data of porosity test, XRD and SEM images. Therefore,silica fume and GOPCs can enhance the mechanical property of hardened cement paste with a compound effect.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2017-01-06 基金项目:武汉工程大学科学研究基金(k201626);武汉市城建委科技计划项目(201610)作者简介:陈亚兵,硕士研究生. E-mail:[email protected]
更新日期/Last Update: 2017-10-25