具有大规模规整致密花状微观结构形貌高/超高性能氧化石墨烯/水泥基复合材料
|
摘要
通过掺入氧化石墨烯(GO)及调控水灰比制备了高性能及超高性能水泥基复合材料,当水灰比为0.26及GO掺量为0.03%和0.05%时,水泥基复合材料的抗压强度和抗折强度分别为125.6 MPa、146.7 MPa和15.6 MPa、18.3 MPa。当水灰比为0.18及GO掺量为0.03%和0.05%时,水泥基复合材料的抗压强度和抗折强度分别为168.6 MPa、181.3 MPa和26.9 MPa、29.4MPa。水泥基复合材料的抗渗透、抗冻融、抗碳化等性能得到了显著提高。通过SEM观察水泥基体的微观形貌,发现水泥水化产物成为了形状规整的水化晶体,并且交织交联成为规整致密的花状微观形貌。XRD结果表明,规整形状水化晶体是由多种水泥水化晶体复合杂化形成的复合晶体。
The high-and ultra-high-performance cement composites(HPC and UHPC)were prepared by doping graphene oxide(GO)and varying water-cement ratio.When water-cement ratio is 0.26 and GO dosage is 0.03%and 0.05%,the compressive and flexural strength of HPC were 125.6 MPa,146.7 MPa and 15.6 MPa,18.3 MPa,respectively.And while water-cement ratio is0.18 and with 0.03% and 0.05% GO,the compressive and flexural strength were 168.6 MPa,181.3 MPa and 26.9 MPa and 29.4 MPa,respectively.The penetration resistance,freeze-thaw resistance and carbonation resistance of the cement composites got remarkably improved by properly adding GO.The regular-shaped crystals of cement hydration products which gathered to form ordered and compact microstructures were observed in SEM microscopic morphology.XRD results indicated that the regular-shaped hydration crystals were constructed by complexing and hybridizing.of cement hydration crystals.
The high-and ultra-high-performance cement composites(HPC and UHPC)were prepared by doping graphene oxide(GO)and varying water-cement ratio.When water-cement ratio is 0.26 and GO dosage is 0.03%and 0.05%,the compressive and flexural strength of HPC were 125.6 MPa,146.7 MPa and 15.6 MPa,18.3 MPa,respectively.And while water-cement ratio is0.18 and with 0.03% and 0.05% GO,the compressive and flexural strength were 168.6 MPa,181.3 MPa and 26.9 MPa and 29.4 MPa,respectively.The penetration resistance,freeze-thaw resistance and carbonation resistance of the cement composites got remarkably improved by properly adding GO.The regular-shaped crystals of cement hydration products which gathered to form ordered and compact microstructures were observed in SEM microscopic morphology.XRD results indicated that the regular-shaped hydration crystals were constructed by complexing and hybridizing.of cement hydration crystals.
引文
1 Mo Zongyun,Gao Xiaojian.Research progress on the durability of metakaolin concrete[J].Mater Rev:Rev,2017,31(8):115(in Chinese).莫宗云,高小建.偏高岭土改性混凝土的耐久性研究进展[J].材料导报:综述篇,2017,31(8):115.
2 Liu Junliang,Xu Jinyu,Ren Weibo,et al.Dynamic mechanical properties of early-strength fiber reinforced concrete at different ages[J].Mater Rev:Res,2016,30(12):157(in Chinese).刘俊良,许金余,任韦波,等.纤维早强混凝土不同龄期的动态力学性能[J].材料导报:研究篇,2016,30(12):157.
3 Ngo T T,Park J K,Pyo S,et al.Shear resistance of ultra-high-performance fiber-reinforced concrete[J].Costruction Building Mater,2017,151:246.
4 Lian Huizhen.Reconsidered on the high performance concrete[J].China Concrete,2010(12):8(in Chinese).廉慧珍.对高性能混凝土的再反思[J].混凝土世界,2010(12):8.
5 Wang Dehui,Shi Caijun,Wu Linmei.Research and applications of ultra-high performance concrete(UHPC)in China[J].Bull Chin Ceram Soc,2016,35(1):142(in Chinese).王德辉,史才军,吴林妹.超高性能混凝土在中国的研究和应用[J].硅酸盐通报,2016,35(1):142.
6 Chen Baochun,Ji Tao,Huang Qingwei,et al.Review of research on ultra-high performance concrete[J].J Achitecture Civil Eng,2014,31(3):1(in Chinese).陈宝春,季韬,黄卿维,等.超高性能混凝土研究综述[J].建筑科学与工程学报,2014,31(3):1.
7 Yu R,Song Q L,Wang X P.Sustainable development of ultra-high performance fibre reinforced concrete(UHPFRC):Towards to an optimized concrete matrix and efficient fibre application[J].J Cleaner Production,2017,162:220.
8 Xu Libin,Dong Yi,Chen Shangwei.Research on the m ixture ratio design of ultra-high perform ance concrete[J].Concrete,2015(1):72(in Chinese).徐立斌,董艺,陈尚伟.超高性能混凝土的配合比设计研究[J].混凝土,2015(1):72.
9 Wan Chaojun,Yin Yaliu,Wang Xiaoqian,et al.Preparation of ultra-high performance concrete[J].Bull Chin Ceram Soc,2015,34(12):3676(in Chinese).万朝均,尹亚柳,王小茜,等.超高性能混凝土的制备[J].硅酸盐通报,2015,34(12):3676.
10 Qin Xiaochuan,Meng Shaoping.Relationship between mesoscopic freeze-thaw damage and compressive strength of high-strength concrete materials[J].Mater Rev:Res,2017,31(1):117(in Chinese).秦晓川,孟少平.高强混凝土材料细观冻融损伤与抗压强度的关系[J].材料导报:研究篇,2017,31(1):117.
11 Biskri Y,Achoura D,Chelghoum N,et al.Mechanical and durability characteristics of high performance concrete containing steel slag and crystalized slag as aggregates[J].Construction Building Mater,2017,150:167.
12 Nilforoush R,Nilsson M.Experimental evaluation of tensile behaviour of single cast-in-place anchor bolts in plain and steel fibre-reinforced normal-and high-strength concrete[J].Eng Structures,2017,147:195.
13 Shin H O,Min K H,Mitchell D.Confinement of ultra-high-performance fiber reinforced concrete columns[J].Compos Structures,2017,176:124.
14 Wijayawardane I S K.Flexural behaviour of glass fibre-reinforced polymer and ultra-high-strength fibre-reinforced concrete composite beams subjected to elevated temperature[J].Adv Structure Eng,2017,20(9):1357.
15 Luccioni B,Isla F,Codina R,et al.Effect of steel fibers on static and blast response of high strength concrete[J].Int J Impact Eng,2017,107:23.
16 Atmaca N,Abbas M L.Effects of nano-silica on the gas permeability,durability and mechanical properties of high-strength lightweight concrete[J].Construction Building Mater,2017,147:17.
17 Huang Zhengyu,Zu Tianyu.Influence of nano-CaCO3on ultra high performance concrete[J].Bull Chin Ceram Soc,2013,32(6):1104(in Chinese).黄政宇,祖天钰.纳米CaCO3对超高性能混凝土性能影响的研究[J].硅酸盐通报,2013,32(6):1104.
18 Lv S H,Ma Y J,Qiu C C,et al.Effect of graphene oxide nanosheets of microstructure and mechanical properties of cement composites[J].Construction Building Mater,2013,49:121.
19 Lv S H,Liu J J,Sun T,et al.Effect of GO nanosheets on shapes of cement hydration crystals and their formation process[J].Construction Building Mater,2014,64:231.
20 Lv S H,Deng L J,Yang W Q,et al.Fabrication of polycarboxylate/graphene oxide nanosheet composites using copolymerization,for reinforcing and toughening cement composites[J].Cem Concr Compos,2016,66:1.
2 Liu Junliang,Xu Jinyu,Ren Weibo,et al.Dynamic mechanical properties of early-strength fiber reinforced concrete at different ages[J].Mater Rev:Res,2016,30(12):157(in Chinese).刘俊良,许金余,任韦波,等.纤维早强混凝土不同龄期的动态力学性能[J].材料导报:研究篇,2016,30(12):157.
3 Ngo T T,Park J K,Pyo S,et al.Shear resistance of ultra-high-performance fiber-reinforced concrete[J].Costruction Building Mater,2017,151:246.
4 Lian Huizhen.Reconsidered on the high performance concrete[J].China Concrete,2010(12):8(in Chinese).廉慧珍.对高性能混凝土的再反思[J].混凝土世界,2010(12):8.
5 Wang Dehui,Shi Caijun,Wu Linmei.Research and applications of ultra-high performance concrete(UHPC)in China[J].Bull Chin Ceram Soc,2016,35(1):142(in Chinese).王德辉,史才军,吴林妹.超高性能混凝土在中国的研究和应用[J].硅酸盐通报,2016,35(1):142.
6 Chen Baochun,Ji Tao,Huang Qingwei,et al.Review of research on ultra-high performance concrete[J].J Achitecture Civil Eng,2014,31(3):1(in Chinese).陈宝春,季韬,黄卿维,等.超高性能混凝土研究综述[J].建筑科学与工程学报,2014,31(3):1.
7 Yu R,Song Q L,Wang X P.Sustainable development of ultra-high performance fibre reinforced concrete(UHPFRC):Towards to an optimized concrete matrix and efficient fibre application[J].J Cleaner Production,2017,162:220.
8 Xu Libin,Dong Yi,Chen Shangwei.Research on the m ixture ratio design of ultra-high perform ance concrete[J].Concrete,2015(1):72(in Chinese).徐立斌,董艺,陈尚伟.超高性能混凝土的配合比设计研究[J].混凝土,2015(1):72.
9 Wan Chaojun,Yin Yaliu,Wang Xiaoqian,et al.Preparation of ultra-high performance concrete[J].Bull Chin Ceram Soc,2015,34(12):3676(in Chinese).万朝均,尹亚柳,王小茜,等.超高性能混凝土的制备[J].硅酸盐通报,2015,34(12):3676.
10 Qin Xiaochuan,Meng Shaoping.Relationship between mesoscopic freeze-thaw damage and compressive strength of high-strength concrete materials[J].Mater Rev:Res,2017,31(1):117(in Chinese).秦晓川,孟少平.高强混凝土材料细观冻融损伤与抗压强度的关系[J].材料导报:研究篇,2017,31(1):117.
11 Biskri Y,Achoura D,Chelghoum N,et al.Mechanical and durability characteristics of high performance concrete containing steel slag and crystalized slag as aggregates[J].Construction Building Mater,2017,150:167.
12 Nilforoush R,Nilsson M.Experimental evaluation of tensile behaviour of single cast-in-place anchor bolts in plain and steel fibre-reinforced normal-and high-strength concrete[J].Eng Structures,2017,147:195.
13 Shin H O,Min K H,Mitchell D.Confinement of ultra-high-performance fiber reinforced concrete columns[J].Compos Structures,2017,176:124.
14 Wijayawardane I S K.Flexural behaviour of glass fibre-reinforced polymer and ultra-high-strength fibre-reinforced concrete composite beams subjected to elevated temperature[J].Adv Structure Eng,2017,20(9):1357.
15 Luccioni B,Isla F,Codina R,et al.Effect of steel fibers on static and blast response of high strength concrete[J].Int J Impact Eng,2017,107:23.
16 Atmaca N,Abbas M L.Effects of nano-silica on the gas permeability,durability and mechanical properties of high-strength lightweight concrete[J].Construction Building Mater,2017,147:17.
17 Huang Zhengyu,Zu Tianyu.Influence of nano-CaCO3on ultra high performance concrete[J].Bull Chin Ceram Soc,2013,32(6):1104(in Chinese).黄政宇,祖天钰.纳米CaCO3对超高性能混凝土性能影响的研究[J].硅酸盐通报,2013,32(6):1104.
18 Lv S H,Ma Y J,Qiu C C,et al.Effect of graphene oxide nanosheets of microstructure and mechanical properties of cement composites[J].Construction Building Mater,2013,49:121.
19 Lv S H,Liu J J,Sun T,et al.Effect of GO nanosheets on shapes of cement hydration crystals and their formation process[J].Construction Building Mater,2014,64:231.
20 Lv S H,Deng L J,Yang W Q,et al.Fabrication of polycarboxylate/graphene oxide nanosheet composites using copolymerization,for reinforcing and toughening cement composites[J].Cem Concr Compos,2016,66:1.