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采用X射线衍射结合Rietveld方法、红外光谱、差示扫描量热、扫描电镜及微量热分析等,研究了磷掺杂对阿利特晶体结构、多晶转变、微观形貌及水化性能等的影响。结果表明:在典型组成的阿利特中,掺1%P_2O5(质量分数,下同)可稳定R型阿利特,但其在650~850℃介稳,向低温晶型转变。低掺量P_2O5(≤0.2%)基本不影响阿利特水化性能。当P_2O5掺量在准同型相界附近(0.5%)时,阿利特早期水化活性最高。随P_2O5掺量增加,阿利特晶粒尺寸增大,早期活性降低,主水化反应减缓,但中后期活性增加。掺磷稳定R型阿利特可显著提高阿利特强度。
Abstract：The influence of phosphorus doping on the crystal structure, phase transformation, microstructure and hydration properties of alite was investigated by X-ray powder diffraction with the Rietveld method, differential scanning calorimetry and Fourier transform infrared spectroscopy, scanning electron microscopy and isothermal calorimetry, respectively. The results show that the P_2O5 addition of 1%(in mass fraction, the same below) can stabilize R-type alite. However, it is unstable at 650–850 ℃, which transforms into lower temperature forms. P_2O5 at a lower content(i.e., ≤0.2%) does not affect the hydration characteristics and strength properties of alite. When the content of P_2O5 is close to the morphotropic phase boundary, alite shows the highest early hydration reactivity. The length-diameter ratio of alite and the early hydration reactivity decrease, the main hydration slows down, but the rate of hydration increases during the deceleration period when the amount of P_2O5 increases. The stabilization of R-type alite can greatly improve the compressive strength of alite.
[1]TAYLOR H F W.Cement Chemistry[M].London:Thomas Telford Publishing,1997:4–111.
[2]DUNSTETTER F,de NOIRFONTAINE M-N,COURTIAL M.Polymorphism of tricalcium silicate,the major compound of Portland cement clinker:1.Structural data:review and unified analysis[J].Cem Concr Res,2006,36(1):39–53.
[3]LUDWIG H-M,ZHANG W.Research review of cement clinker chemistry[J].Cem Concr Res,2015,78:24–37.
[4]张文生,任雪红,欧阳世翕.离子固溶对硅酸三钙结构及性能影响的研究进展[J].硅酸盐学报,2011,39(10):1666–1672.ZHANG Wensheng,REN Xuehong,OUYANG Shixi.J Chin Ceram Soc,2011,39(10):1666–1672.
[5]STANěK T,SULOVSKYP.The influence of phosphorous pentoxide on the phase composition and formation of Portland clinker[J].Mater Charact,2009,60(7):749–755.
[6]DIOURI A,BOUKHARI A,ARIDE J,et al.Stable Ca3Si O5 solid solution containing manganese and phosphorus[J].Cem Concr Res,1997,27(8):1203–1212.
[7]DE NOIRFONTAINE M,TUSSEAU-NENEZ S,SIGNES-FREHEL M,et al.Effect of phosphorus impurity on tricalcium silicate T 1:From synthesis to structural characterization[J].J Chin Ceram Soc,2009,92(10):2337–2344.
[8]童雪莉,张晓东.P2O5对硅酸盐水泥熟料矿物组成影响的研究[J].硅酸盐学报,1986(01):56–63.TONG Xueli,ZHANG Xiaodong.J Chin Ceram Soc,1986(01):56–63.
[9]NASTAC D,FRUTH V,MUNTEAN M.Changes in the cell parameters of alite doped with phosphorus[J].Rev Rom Mater,2008,38(3):193–202.
[10]HALICZ L,NATHAN Y,BEN-DOR L.The influence of P2O5 on clinker reactions[J].Cem Concr Res,1984,14(1):11–18.
[11]马先伟,王培铭.P2O5对于高C3S水泥熟料烧成和水化性能的影响[J].材料科学与工程学报,2010(01):26–30.MA Xianwei,WANG Peiming.J Mater Sci Eng,2010(01):26–30.
[12]陈益民,郭随华,管宗甫.高胶凝性水泥熟料[J].硅酸盐学报,2004,32(7):873–879.CHEN Yimin,GUO Suihua,GUAN Zhongfu.J Chin Ceram Soc,2004,32(7):873–879.
[13]吴秀俊.磷、氟对磷工业废渣烧制水泥熟料的影响[J].水泥,2005(3):7–11.WU Xiujun.Cement(in Chinese),2005(3):7–11.
[14]王彬,任雪红,张文生.以不同磷酸钙盐形式引入P5+掺杂对阿利特结构及活性的影响[J].硅酸盐学报,2013(05):644–649.WANG Bin,REN Xuehong,ZXHANG Wensheng.J Chin Ceram Soc,2013(05):644-649.
[15]任雪红,张文生,欧阳世翕.多离子复合掺杂对阿利特介稳结构的影响[J].硅酸盐学报,2012(05):664–670.REN Xuehong,ZXHANG Wensheng,OUYANG Shixi.J Chin Ceram Soc,2012(05):664–670.
[16]BIGARE M,GUINIER A,MAZIHRES C,et al.Polymorphism of tricalcium silicate and its solid solution[J].J Am Ceram Soc,1967,50(11):609–619.
[17]URABE K,SHIRAKAMI T,IWASHIMA M.Superstructure in triclinic phase of tricalcium silicate[J].J Am Ceram Soc,2000,83(5):1253–1258.
[18]URABE K,NAKANO H,MORITA H.Structural modulations in monoclinic tricalcium silicate solid solutions doped with zinc oxide,M(I),M(II),and M(III)[J].J Am Ceram Soc,2002,85(2):423–429.
[19]DE NOIRFONTAINE M N,DUNSTETTER F,COURTIAL M,et al.Polymorphism of tricalcium silicate,the major compound of Portland cement clinker 2.Modelling alite for Rietveld analysis,an industrial challenge[J].Cem Concr Res,2006,36(1):54–64.
[20]NISHI F,TAKéUCHI Y,WATANABE I.Tricalcium silicate Ca3O[Si O4]:The monoclinic superstructure[J].Zeit Krist,1985,172(3/4):297–314.
[21]LL'INETS A M,MALINOVSKII Y A,NEVSKII N N.Crystal structure of the rhombohedral modification of tricalcium silicate Ca3Si O5[J].Sov Phys Dokl,1985,33(3):191.
[22]JEFFERY J W.The crystal structure of tricalcium Silicate[J].Acta Crystallogr,1952,5(26):24–35.
[23]KOLOVOS K G,TSIVILIS S,KAKALI G.Study of clinker dopped with P and S compounds[J].J Chin Ceram Soc,2004,77(3):759–766.
[24]MAKI I,KATO K.Phase identification of alite in portland cement clinker[J].Cem Concr Res,1982,12(1):93–100.
[25]THOMPSON R A,KILLOH D C,FORRESTER J A.Crystal Chemistry and Reactivity of the Mg O-Stabilized Alites[J].J Am Ceram Soc,1975,58(1/2):54–57.
[26]BOIKOVA A I.Chemical composition of raw materials as the main factor responsible for the composition,structure and properties of clinker phases[C]//8th ICCC,1986,1:19–33.
基本信息:
DOI：10.14062/j.issn.0454-5648.2017.08.04
中图分类号:TQ172.1
引用信息:
[1]任雪红,张文生,叶家元,等.磷掺杂对阿利特介稳结构及水化性能的影响[J].硅酸盐学报,2017,45(08):1073-1079.DOI:10.14062/j.issn.0454-5648.2017.08.04.
基金信息:
国家自然科学基金资助项目(51302256)
2016-11-02
2016
2017-06-01
2017
2017-06-26
1
2017-07-23
2017-07-23
2017-07-23