纳米压痕研究碳纳米管固井水泥石微观力学性能
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摘要
为更好探索碳纳米管增强固井水泥石力学性能的微观机理,采用纳米压痕技术对固井水泥石的微观力学性能进行研究。以空白固井水泥石和掺碳纳米管固井水泥石为研究对象。通过对压痕模量进行测试和统计分析,得到水化产物中毛细孔、低密度C-S-H、高密度C-S-H以及超高密度C-S-H的含量。结果表明:和空白水泥石相比,掺入碳纳米管的水泥石中孔隙含量更少,高密度C-S-H以及超高密度C-S-H的含量则更高。实验证明,碳纳米管的掺入能够加速水泥水化反应的进行,促进Ca(OH)_2的结晶化,并最终提高水泥石的宏观力学性能。
In order to better understand the micro mechanical properties of carbon nanotube reinforced well-cementing cement stone, nanoindentation technology was used to study the micromechanical properties of well-cementing cement stone The blank cement stone and carbon nanotube cement stone were researched. By testing and statistical analysis of the indentation modulus,the percentage of the pores,low density C-S-H (LD C-S-H),high density C-S-H (HD C-S-H) and ultra high density C-S-H (UHD C-S-H) in the hydration product can be obtained. The results show that compared to blank cement stone,the pores in the carbon nanotubes cement is less,but the content of LD C-S-H and UHD C-S-H is higher. Experiments results show that the incorporation of carbon nanotubes can accelerate the progress of cement hydration reaction,and promote the crystallization of Ca(OH)_2. Finally,the macroscopic mechanical properties of cement stone is improved.
In order to better understand the micro mechanical properties of carbon nanotube reinforced well-cementing cement stone, nanoindentation technology was used to study the micromechanical properties of well-cementing cement stone The blank cement stone and carbon nanotube cement stone were researched. By testing and statistical analysis of the indentation modulus,the percentage of the pores,low density C-S-H (LD C-S-H),high density C-S-H (HD C-S-H) and ultra high density C-S-H (UHD C-S-H) in the hydration product can be obtained. The results show that compared to blank cement stone,the pores in the carbon nanotubes cement is less,but the content of LD C-S-H and UHD C-S-H is higher. Experiments results show that the incorporation of carbon nanotubes can accelerate the progress of cement hydration reaction,and promote the crystallization of Ca(OH)_2. Finally,the macroscopic mechanical properties of cement stone is improved.
引文
[1]刘慧婷,刘硕琼,齐奉忠.紧密堆积优化固井水泥浆体系研究进展[J].硅酸盐通报,2014,33(9):2269-2274.
[2]Maka J M,Beaudoin J J.Carbon nanotubes and their applications in the construction industry[C].P.J.M.Bartos,J.J.Hughes,P.Trtik,W.Zhu(Eds.),Nanotechnology in construction,Proceedings of the 1st International Symposium on Nanotechnology in Construction,Royal Society of Chemistry,2004:331-341.
[3]李庚英,王培铭.碳纳米管-水泥基复合材料的力学性能和微观结构[J].硅酸盐学报,2005,33(1):105-108.
[4]罗健林.碳纳米管水泥基复合材料制备及功能性能研究[D].哈尔滨:哈尔滨工业大学,2009.
[5]Salvetat J P,Bonard J M,Thomson N H,et al.Mechanical properties of carbon nanotubes[J].Appl.Phys.A,1999,69(3):255-260.
[6]Belytschko T,Xiao S P,Schatz G C,et al.Atomistic simulations of nanotube fracture[J].Phys.Rev.B,2002,65(23):235430-235437.
[7]Makar J M,Margeson J,Luh J.Carbon nanotube/cement composites-early results and potential applications[C].Proceedings of the 3rd International Conference on Construction Materials:Performance,Innovations and Structural Implications,Vancouver,B.C.,Canada,2005:1-10.
[8]Li G Y,Wang P M,Zhao X.Mechanical behavior and microstructure of cement composites incorporating surface-treated multi-walled carbon naotubes[J].Carbon,2005,43(6):1239-1245.
[9]Li G Y,Wang P M,Zhao X.Pressure-sensitive and microstructure of carbon nanotube reinforced cement composites[J].Cem.Concr.Comp.,2007,29(5):377-382.
[10]Saez de Ibarra Y,Gaitero J J,Erkizia E,et al.Atomic force microscopy and nanoindentation of cement pastes with nanotube dispersions[J].Physica Status Solidi(a),2006,203(6):1076-1081.
[11]Wansom S,Kidner N J,Woo L Y,et al.AC-impedance response of multiwalled carbon nanotube/cement composite[J].Cem.Concr.Comp.,2006,28(6):509-519.
[12]Cwirzen A,Habermehl-Chirzen K,Penttala V.Surface decoration of carbon nanotubes and mechanical properties of cement/carbon nanotube composites[J].Adv.Cem.Res.,2008,20(2):65-73.
[13]Groert N.Carbon nanotubes becoming clean[J].Mater.Today,2007,10(1-2):28-35.
[14]Konsta-Gdoutos M S,Metaxa Z S,Shah S P.Highly dispersed carbon nanotube reinforced cement based materials[J].Cement&Concrete Research,2016,40(7):1052-1059.
[15]刘慧婷,刘硕琼,冯宇思,等.碳纳米管的掺入对油井水泥浆性能的影响[J].硅酸盐通报,2015,34(2):456-460.
[16]周伟玲,孙伟,陈翠翠,等.纳米压痕技术研究磨细矿渣对水泥基材料微观力学性能的影响[J].硅酸盐学报,2011,39(4):718-725.
[17]赵素晶.超高性能水泥基复合材料的力学性能和微结构研究[D].南京:东南大学,2016.
[18]Constantinides G,Ulm F J.The nanogranular nature of C-S-H[J].Journal of the Mechanics&Physics of Solids,2007,55(1):64-90.
[19]刘帅.碳纳米管的分散性及其水泥基复合材料耐久性能[D].大连:大连理工大学,2015.
[20]施韬,杨泽平,郑立炜.碳纳米管改性水泥基复合材料早龄期水化反应的傅里叶红外光谱[J].复合材料学报,2017,34(3):653-660.
[2]Maka J M,Beaudoin J J.Carbon nanotubes and their applications in the construction industry[C].P.J.M.Bartos,J.J.Hughes,P.Trtik,W.Zhu(Eds.),Nanotechnology in construction,Proceedings of the 1st International Symposium on Nanotechnology in Construction,Royal Society of Chemistry,2004:331-341.
[3]李庚英,王培铭.碳纳米管-水泥基复合材料的力学性能和微观结构[J].硅酸盐学报,2005,33(1):105-108.
[4]罗健林.碳纳米管水泥基复合材料制备及功能性能研究[D].哈尔滨:哈尔滨工业大学,2009.
[5]Salvetat J P,Bonard J M,Thomson N H,et al.Mechanical properties of carbon nanotubes[J].Appl.Phys.A,1999,69(3):255-260.
[6]Belytschko T,Xiao S P,Schatz G C,et al.Atomistic simulations of nanotube fracture[J].Phys.Rev.B,2002,65(23):235430-235437.
[7]Makar J M,Margeson J,Luh J.Carbon nanotube/cement composites-early results and potential applications[C].Proceedings of the 3rd International Conference on Construction Materials:Performance,Innovations and Structural Implications,Vancouver,B.C.,Canada,2005:1-10.
[8]Li G Y,Wang P M,Zhao X.Mechanical behavior and microstructure of cement composites incorporating surface-treated multi-walled carbon naotubes[J].Carbon,2005,43(6):1239-1245.
[9]Li G Y,Wang P M,Zhao X.Pressure-sensitive and microstructure of carbon nanotube reinforced cement composites[J].Cem.Concr.Comp.,2007,29(5):377-382.
[10]Saez de Ibarra Y,Gaitero J J,Erkizia E,et al.Atomic force microscopy and nanoindentation of cement pastes with nanotube dispersions[J].Physica Status Solidi(a),2006,203(6):1076-1081.
[11]Wansom S,Kidner N J,Woo L Y,et al.AC-impedance response of multiwalled carbon nanotube/cement composite[J].Cem.Concr.Comp.,2006,28(6):509-519.
[12]Cwirzen A,Habermehl-Chirzen K,Penttala V.Surface decoration of carbon nanotubes and mechanical properties of cement/carbon nanotube composites[J].Adv.Cem.Res.,2008,20(2):65-73.
[13]Groert N.Carbon nanotubes becoming clean[J].Mater.Today,2007,10(1-2):28-35.
[14]Konsta-Gdoutos M S,Metaxa Z S,Shah S P.Highly dispersed carbon nanotube reinforced cement based materials[J].Cement&Concrete Research,2016,40(7):1052-1059.
[15]刘慧婷,刘硕琼,冯宇思,等.碳纳米管的掺入对油井水泥浆性能的影响[J].硅酸盐通报,2015,34(2):456-460.
[16]周伟玲,孙伟,陈翠翠,等.纳米压痕技术研究磨细矿渣对水泥基材料微观力学性能的影响[J].硅酸盐学报,2011,39(4):718-725.
[17]赵素晶.超高性能水泥基复合材料的力学性能和微结构研究[D].南京:东南大学,2016.
[18]Constantinides G,Ulm F J.The nanogranular nature of C-S-H[J].Journal of the Mechanics&Physics of Solids,2007,55(1):64-90.
[19]刘帅.碳纳米管的分散性及其水泥基复合材料耐久性能[D].大连:大连理工大学,2015.
[20]施韬,杨泽平,郑立炜.碳纳米管改性水泥基复合材料早龄期水化反应的傅里叶红外光谱[J].复合材料学报,2017,34(3):653-660.
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