氧化石墨烯水泥基复合材料的流动性、力学性能及其作用机理探究
|
摘要
氧化石墨烯(graphene oxide,GO)对水泥基复合材料的调控与增强效应成为了研究的热点问题.文中系统研究了GO对水泥胶砂的流动性和物理力学性能的影响,并借助X-射线衍射(X-ray diffraction,XRD)、扫描电子显微镜(scanning electron microscope,SEM)等手段进行微观表证.结果表明,水泥胶砂的流动性随GO掺量的增加而降低,GO对水泥水化行为具有显著的促进作用,对水泥水化产物有调控作用,能够使水泥水化产物有序规整发展,减少微观缺陷,实验证明GO掺量为0.1%时可大幅提高水泥基复合材料的抗折强度与抗压强度.
The regulation and enhancement effect of graphene oxide(GO) on cement-based composites has become a hot issue. This paper investigates the effect of GO on fluidity, physical and mechanical properties of cement mortar systematically. As is shown by the results, the fluidity of cement mortar decreases with the increase of GO content. GO has remarkable regulation effect on the hydration behavior of cement, and it has a regulating effect on the hydration products of the cement which can make cement hydration products develop in an orderly manner and reduce micro defects. It is shown from the experiment that when GO content is 0.1%, the flexural strength and compressive strength of cement-based composites can be greatly improved.
The regulation and enhancement effect of graphene oxide(GO) on cement-based composites has become a hot issue. This paper investigates the effect of GO on fluidity, physical and mechanical properties of cement mortar systematically. As is shown by the results, the fluidity of cement mortar decreases with the increase of GO content. GO has remarkable regulation effect on the hydration behavior of cement, and it has a regulating effect on the hydration products of the cement which can make cement hydration products develop in an orderly manner and reduce micro defects. It is shown from the experiment that when GO content is 0.1%, the flexural strength and compressive strength of cement-based composites can be greatly improved.
引文
[1]ANTONIO B,TULLIO M,FRANCESCO B,et al.Modeling of concrete cracking derived from corrosion process of reinforcement bars[J].Cement Concrete Research,2015,71(5):78-92.
[2]HOLT E,FERREIRA M,KUOSA H,等.多重劣化机制作用下混凝土的性能和耐久性[J].硅酸盐学报,2015,43(10):1420-1426.HOLT E,FERREIRA M,KUOSA H,et al.Performance and durability of concrete under effect of multi-deterioration mechanisms[J].Journal of the Chinese Ceramic Society,2015,43(10):1420-1426.(in Chinese)
[3]CHAKRABORTY S,KUNDU S P,ROY A,et al.Effect of jute as fiber reinforcement controlling the hydration characteristics of cement matrix[J].Industrial&Engineering Chemistry Research,2013,52(3):1252-1260.
[4]AQEL M,PANESAR D K.Hydration kinetics and compressive strength of steam-cured cement pastes and mortars containing limestone filler[J].Construction and Building Materials,2016,113:359-368.
[5]TENNICH M,KALLEL A,OUEZDOU B M.Incorporation of fillers from marble and tile wastes in the composition of self-compacting concretes[J].Construction and Building Materials,2015,91:65-70.
[6]ZHANG Wei,ZONG Lan,ZHANG Shiping.Effects of hybrid fibers on the resistance to cracking of the highperformance concrete at early age[J].Concrete,2016(8):16-19.
[7]吕生华,马宇娟,邱超超,等.氧化石墨烯对水泥石微观结构及性能的影响[J].混凝土,2013(8):51-54.DOI:10.3969/j.issn.1002-3550.2013.08.014.LShenghua,MA Yujuan,QIU Chaochao,et al.Effects of graphene oxide on microstructure of hardened cement paste and its properties[J].Concrete,2013(8):51-54.DOI:10.3969/j.issn.1002-3550.2013.08.014.(in Chinese)
[8]高党国,马宇娟.氧化石墨烯与聚羧酸减水剂单体共聚物的制备与性能[J].精细化工,2015,32(1):103-107,120.GAO Dangguo,MA Yujuan.Preparation and properties of copolymer of graphene oxide and monomers of polycarboxylate superplasticizer[J].Fine Chemicals,2015,32(1):103-107,120.(in Chinese)
[9]吕生华,崔亚亚,孙婷,等.氧化石墨烯对水泥净浆流动度及水泥石结构和性能的影响[J].功能材料,2015(4):4051-4056.LV Shenghua,CUI Yaya,SUN Ting,et al.Effects of graphene oxide on fluidity of cement paste and structure and properties of hardened cement paste[J].Journal of Functional Materials,2015(4):4051-4056.(in Chinese)
[10]吕生华,刘晶晶,邱超超,等.纳米氧化石墨烯增强增韧水泥基复合材料的微观结构及作用机理[J].功能材料,2014,25(4):4084-4089.LV Shenghua,LIU Jingjing,QIU Chaochao,et al.Microstructure and mechanism of reinforced and toughened cement composites by nanographene oxide[J].Journal of Functional Materials,2014,25(4):4084-4089.(in Chinese)
[11]LV S,MA Y,QIU C,et al.Effect of graphene oxide nanosheets of microstructure and mechanical properties of cement composites[J].Construction and Building Materials,2013,49:121-127.
[12]QIU C,ZHOU Q,LV S,et al.Regulation of GO on cement hydration crystals and its toughening effect[J].Magazine of Concrete Research,2013,65(20):1246-1254.
[13]吕生华,孙婷,马宇娟,等.纳米氧化石墨烯对水泥复合材料中水化晶体结构的控制及增韧作用[J].混凝土,2013(11):1-6.LU Shenghua,SUN Ting,MA Yujuan,et al.Regulation of grapheme oxide on microstructure of hydration crystals of cement composites and its impact on reinforcing toughenss[J].Concrete,2013(11):1-6.(in Chinese)
[14]LV S,ZHANG J,ZHU L,et al.Preparation of cement composites with ordered microstructures via doping with graphene oxide nanosheets and an investigation of their strength and durability[J].Materials,2016,9(11):924.
[15]KOVTYUKHOVA N I,OLLIVIER P J,MARTIN B R,et al.Layer-by-layer assembly of ultrathin composite films from micron-sized graphite oxide sheets and polycations[J].Chemistry of Materials,1999,11(3):771-778.
[2]HOLT E,FERREIRA M,KUOSA H,等.多重劣化机制作用下混凝土的性能和耐久性[J].硅酸盐学报,2015,43(10):1420-1426.HOLT E,FERREIRA M,KUOSA H,et al.Performance and durability of concrete under effect of multi-deterioration mechanisms[J].Journal of the Chinese Ceramic Society,2015,43(10):1420-1426.(in Chinese)
[3]CHAKRABORTY S,KUNDU S P,ROY A,et al.Effect of jute as fiber reinforcement controlling the hydration characteristics of cement matrix[J].Industrial&Engineering Chemistry Research,2013,52(3):1252-1260.
[4]AQEL M,PANESAR D K.Hydration kinetics and compressive strength of steam-cured cement pastes and mortars containing limestone filler[J].Construction and Building Materials,2016,113:359-368.
[5]TENNICH M,KALLEL A,OUEZDOU B M.Incorporation of fillers from marble and tile wastes in the composition of self-compacting concretes[J].Construction and Building Materials,2015,91:65-70.
[6]ZHANG Wei,ZONG Lan,ZHANG Shiping.Effects of hybrid fibers on the resistance to cracking of the highperformance concrete at early age[J].Concrete,2016(8):16-19.
[7]吕生华,马宇娟,邱超超,等.氧化石墨烯对水泥石微观结构及性能的影响[J].混凝土,2013(8):51-54.DOI:10.3969/j.issn.1002-3550.2013.08.014.LShenghua,MA Yujuan,QIU Chaochao,et al.Effects of graphene oxide on microstructure of hardened cement paste and its properties[J].Concrete,2013(8):51-54.DOI:10.3969/j.issn.1002-3550.2013.08.014.(in Chinese)
[8]高党国,马宇娟.氧化石墨烯与聚羧酸减水剂单体共聚物的制备与性能[J].精细化工,2015,32(1):103-107,120.GAO Dangguo,MA Yujuan.Preparation and properties of copolymer of graphene oxide and monomers of polycarboxylate superplasticizer[J].Fine Chemicals,2015,32(1):103-107,120.(in Chinese)
[9]吕生华,崔亚亚,孙婷,等.氧化石墨烯对水泥净浆流动度及水泥石结构和性能的影响[J].功能材料,2015(4):4051-4056.LV Shenghua,CUI Yaya,SUN Ting,et al.Effects of graphene oxide on fluidity of cement paste and structure and properties of hardened cement paste[J].Journal of Functional Materials,2015(4):4051-4056.(in Chinese)
[10]吕生华,刘晶晶,邱超超,等.纳米氧化石墨烯增强增韧水泥基复合材料的微观结构及作用机理[J].功能材料,2014,25(4):4084-4089.LV Shenghua,LIU Jingjing,QIU Chaochao,et al.Microstructure and mechanism of reinforced and toughened cement composites by nanographene oxide[J].Journal of Functional Materials,2014,25(4):4084-4089.(in Chinese)
[11]LV S,MA Y,QIU C,et al.Effect of graphene oxide nanosheets of microstructure and mechanical properties of cement composites[J].Construction and Building Materials,2013,49:121-127.
[12]QIU C,ZHOU Q,LV S,et al.Regulation of GO on cement hydration crystals and its toughening effect[J].Magazine of Concrete Research,2013,65(20):1246-1254.
[13]吕生华,孙婷,马宇娟,等.纳米氧化石墨烯对水泥复合材料中水化晶体结构的控制及增韧作用[J].混凝土,2013(11):1-6.LU Shenghua,SUN Ting,MA Yujuan,et al.Regulation of grapheme oxide on microstructure of hydration crystals of cement composites and its impact on reinforcing toughenss[J].Concrete,2013(11):1-6.(in Chinese)
[14]LV S,ZHANG J,ZHU L,et al.Preparation of cement composites with ordered microstructures via doping with graphene oxide nanosheets and an investigation of their strength and durability[J].Materials,2016,9(11):924.
[15]KOVTYUKHOVA N I,OLLIVIER P J,MARTIN B R,et al.Layer-by-layer assembly of ultrathin composite films from micron-sized graphite oxide sheets and polycations[J].Chemistry of Materials,1999,11(3):771-778.