概述了小角散射的基本原理,总结了小角散射数据纪尼叶(Guinier)近似处理和Porod近似处理及其应用,综述了利用小角散射技术研究硬化水泥浆体纳米凝胶粒子尺寸、凝胶粒子分形结构和孔隙孔径分布.结果表明,小角散射技术能在无破坏、无侵入条件下实时、重复表征硬化水泥浆体纳米结构特征及其演化.受到有效散射中子源获取困难、仪器投资巨大及分析测试模型过于简化等条件的影响,小角散射技术特别是中子小角散射技术在硬化水泥浆体微结构表征与应用上的研究需要不断发展和完善.
This paper summarizes the principal theory of small-angle scattering technique (SAS), including Guinier approximation, Porod approximation and function of the two approximations. Application of SAS in nano-CSH particle diameter, fractal structure of nano-CSH and pore structure distribution in hardened cement pastes is also described in the paper. Advantage of the technique is nondestructive, noninvasive, and could be used repeatedly in the real-time characterization of the microstructure and its evolution. SAS, especially small-angle neutron scattering technique (SANS), also has its limit because effective neutron source is difficult to obtain, analysis of test model is too simplistic far from real fact, and experiment is costly and non-portable.
参考文献
| [1] | Karen L. Scrivener;R. James Kirkpatrick .Innovation in use and research on cementitious material[J].Cement and Concrete Research,2008(2):128-136. |
| [2] | J. Francis Young .Looking ahead from the past: The heritage of cement chemistry[J].Cement and Concrete Research,2008(2):111-114. |
| [3] | James J. Beaudoin .The 12th International Congress on the Chemistry of Cement[J].Cement and Concrete Research,2008(2):109-110. |
| [4] | Fredrik P. Glasser;Jacques Marchand;Eric Samson .Durability of concrete--Degradation phenomena involving detrimental chemical reactions[J].Cement and Concrete Research,2008(2):226-246. |
| [5] | Characterization And Modeling Of Pores And Surfaces In Cement Paste: Correlations To Processing And Properties[J].Journal of advanced concrete technology,2008(1):5-29. |
| [6] | Jorgen Skibsted;Christopher Hall .Characterization of cement minerals, cements and their reaction products at the atomic and nano scale[J].Cement and Concrete Research,2008(2):205-225. |
| [7] | Jean-Philippe Gorce;Neil B. Milestone .Probing the microstructure and water phases in composite cement blends[J].Cement and Concrete Research,2007(3):310-318. |
| [8] | Korb J P .Microstructure and texture of cementitious porous materials[J].Magnetic Resonance Imaging,2007,25:466-469. |
| [9] | Peter J. McDonald;Jonathan Mitchell;Mike Mulheron .Two-dimensional correlation relaxometry studies of cement pastes performed using a new one-sided NMR magnet[J].Cement and Concrete Research,2007(3):303-309. |
| [10] | Nikolaus Nestle;Petrik Galvosas;Jorg Karger .Liquid-phase self-diffusion in hydrating cement pastes - results from NMR studies and perspectives for further research[J].Cement and Concrete Research,2007(3):398-413. |
| [11] | 孟昭富.小角X射线理论及应用[M].长春:吉林科学技术出版社,1995:1-74. |
| [12] | A.P. Radlinski;M. Mastalerz;A.L. Hinde;M. Hainbuchner;H. Rauch;M. Baron;J.S. Lin;L. Fan;P. Thiyagarajan .Application of SAXS and SANS in evaluation of porosity, pore size distribution and surface area of coal[J].International Journal of Coal Geology,2004(3/4):245-271. |
| [13] | Fratzl P. .Small-angle scattering in materials science - a short review of applications in alloys, ceramics and composite materials[J].Journal of Applied Crystallography,2003(3 Pt.1):397-404. |
| [14] | Allen, AJ .Characterization of ceramics by X-ray and neutron small-angle scattering[J].Journal of the American Ceramic Society,2005(6):1367-1381. |
| [15] | Andrew J. Allen;Jeffrey J. Thomas .Analysis of C-S-H gel and cement paste by small-angle neutron scattering[J].Cement and Concrete Research,2007(3):319-324. |
| [16] | 张剑;敬登伟;马利静 .散射技术[EB/OL].http://www.chm.bris.ac.uk/pt/eastoe/,2004. |
| [17] | Kalliopi K Aligizaki.Pore structure of cement-based materials:testing,interpretation and requirements[M].Lond and Newyork:Taylor and Francis Group,2006:247-285. |
| [18] | Ficker T;Len A;Nemec P .Notes on hydrated cement fractals investigated by SANS[J].Journal of Physics, D. Applied Physics: A Europhysics Journal,2007(13):4055-4059. |
| [19] | Hamlin M. Jennings;Jeffrey J. Thotnas;Julia S. Gevrenov .A multi-technique investigation of the nanoporosity of cement paste[J].Cement and Concrete Research,2007(3):329-336. |
| [20] | James J. Beaudoin;Rouhollah Alizadeh .A discussion of the paper "A multi-technique investigation of the nanoporosity of cement paste" by Hamlin M. Jennings, Jeffrey J. Thomas, Julia S. Gevrenov, Georgios Constantinides and Franz-Josef Ulm[J].Cement and Concrete Research,2007(9):1373-0. |
| [21] | Hamlin M. Jennings;Jeffrey J. Thomas;Julia S. Gevrenov .Reply to discussion of the paper "A multi-technique investigation of the nanoporosity of cement paste"[J].Cement and Concrete Research,2007(9):1374-1375. |
| [22] | 吉林大学化学系《催化作用基础》编写组.催化作用基础[M].北京:科学出版社,1980:421-425. |
| [23] | Lin J S;Hendricks R W .Microporosity and micromineralogy of vitrinite in a bituminous coal[J].Journal of Applied Crystallography,1978,11:621-625. |
| [24] | I.G. Richardson .The calcium silicate hydrates[J].Cement and Concrete Research,2008(2):137-158. |
| [25] | I.G.Richardson .The nature of C-S-H in hardened cements[J].Cement and Concrete Research,1999(8):1131-1147. |
| [26] | H.M.Jennings .A model for the microstructure of calcium silicate hydrate in cement paste[J].Cement and Concrete Research,2000(1):101-116. |
| [27] | Jennings H M .Reply to the discussion of the paper "A model for the microstructure of calcium silicate hydrate in cement paste" by Ivan Odler,em.Concr Res[J].Cement and Concrete Research,2000,30(08):1339-1341. |
| [28] | H. M. Jennings .Colloid model of C-S-H and implications to the problem of creep and shrinkage[J].Materials and structures,2004(265):59-70. |
| [29] | Hamlin M. Jennings .Refinements to colloid model of C-S-H in cement: CM-II[J].Cement and Concrete Research,2008(3):275-289. |
| [30] | Jennings H M;H M Jennings .Reply to the discussion by J.J.Beaudoin and R.Alizeadab of the paper "Refinements to colloid model of C-S-H in cement:CM-II"[J].Cement and Concrete Research,2008,38(07):1028-1030. |
| [31] | Feldman R F;Sereda P J .A model for hydrated Portland cement paste as deduced from sorption-length change and mechanical properties[J].Materials and Structures,1968,1(06):509-520. |
| [32] | J J. Thomas;H.M. Jennings .A colloidal interpretation of chemical aging of the C-S-H gel and its effects on the properties of cement paste[J].Cement and Concrete Research,2006(1):30-38. |
| [33] | G.W.Scherer .Structure and properties of gels[J].Cement and Concrete Research,1999(8):1149-1157. |
| [34] | Powers T C .Structure and physical properties of hardened Portland cement paste[J].Journal of the American Ceramic Society,1958,41:1-6. |
| [35] | Odler I;Chen Y .Investigations on the aging of hydrated tricalcium silicate and Portland cement pastes[J].Cement and Concrete Research,1995,25(05):919-923. |
| [36] | Beaudoin J J;Alizadeh R;Hamlin M Jennings .A discussion of the paper "Refinements to colloidal model of C-S-H in cement:CM-II"[J].Cement and Concrete Research,2008,38(07):1026-1027. |
| [37] | Allen AJ;Thomas JJ;Jennings HM .Composition and density of nanoscale calcium-silicate-hydrate in cement[J].Nature materials,2007(4):311-316. |
| [38] | 李永鑫,陈益民,贺行洋,韦江雄,张文生,张洪滔,郭随华.粉煤灰-水泥浆体的孔体积分形维数及其与孔结构和强度的关系[J].硅酸盐学报,2003(08):774-779. |
| [39] | Haubler F;Eichhom F .Monitoring of the hydration process of hardening cement pastes by small-angle neutron scattering[J].Cement and Concrete Research,1990,20(04):644-654. |
| [40] | Constantinides, G;Ulm, FJ .The nanogranular nature of C-S-H[J].Journal of the Mechanics and Physics of Solids,2007(2):64-90. |
| [41] | Jennings H M;Thomas J J;Gevrenov J S.Relating the nanostructure of concrete to engineering properties[A].RILEM Publications SARL,2006:1-10. |
| [42] | Jeffrey J. Thomas;Andrew J. Allen;Hamlin M. Jennings .Structural Changes to the Calcium-Silicate-Hydrate Gel Phase of Hydrated Cement with Age, Drying, and Resaturation[J].Journal of the American Ceramic Society,2008(10):3362-3369. |
| [43] | Allen A J;Oberthur R C;Pearson D et al.Development of the fine porosity and gel structure of hydrating cement[J].PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANIC,1987,56(03):263-288. |
| [44] | Winslow D;Bukowski J M;Young J F .The fractal arrangement of hydrated cement paste[J].Cement and Concrete Research,1995,25(01):147-156. |
| [45] | Hinde AL .PRINSAS - a Windows-based computer program for the processing and interpretation of small-angle scattering data tailored to the analysis of sedimentary rocks[J].Journal of Applied Crystallography,2004(0):1020-1024. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%