Characterizing the nano and micro structure of concrete to improve its durability

被引：83
作者：
Monteiro, P. J. M. [1 ]
Kirchheim, A. P. [1 ]
Chae, S. [1 ]
Fischer, P. [2 ]
MacDowell, A. A. [3 ]
Schaible, E. [3 ]
Wenk, H. R.
机构：
[1] Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94720 USA
[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Ctr Xray Opt, Berkeley, CA 94720 USA
[3] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA
来源：
CEMENT & CONCRETE COMPOSITES | 2009年 / 31卷 / 08期
基金：
美国国家科学基金会;
关键词：
Concrete; Durability; Microscopy; Neutron; Tomography; X-ray; NEUTRON-SCATTERING; CEMENT PASTE; TRICALCIUM SILICATE; CALCIUM HYDROXIDE; HIGH-PRESSURE; IN-SITU; HYDRATION; DIFFRACTION; GEL; ETTRINGITE;
D O I：
10.1016/j.cemconcomp.2008.12.007
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
New and advanced methodologies have been developed to characterize the nano and microstructure of cement paste and concrete exposed to aggressive environments. High resolution full-field soft X-ray imaging in the water window is providing new insight on the nano scale of the cement hydration process, which leads to a nano-optimization of cement-based systems. Hard X-ray microtomography images of ice inside cement paste and cracking caused by the alkali-silica reaction (ASR) enables three-dimensional structural identification. The potential of neutron diffraction to determine reactive aggregates by measuring their residual strains and preferred orientation is studied. Results of experiments using these tools are shown on this paper. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：577 / 584
页数：8
相关论文
共 39 条
  • [1] A SMALL-ANGLE NEUTRON-SCATTERING STUDY OF CEMENT POROSITIES
    ALLEN, AJ
    WINDSOR, CG
    RAINEY, V
    PEARSON, D
    DOUBLE, DD
    ALFORD, NM
    [J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1982, 15 (09) : 1817 - 1833
  • [2] ALLEN AJ, 2007, NATURE MAT, V6
  • [3] Analysis of C-S-H gel and cement paste by small-angle neutron scattering
    Allen, Andrew J.
    Thomas, Jeffrey J.
    [J]. CEMENT AND CONCRETE RESEARCH, 2007, 37 (03) : 319 - 324
  • [4] [Anonymous], 2001, CLASSICS APPL MATH
  • [5] [Anonymous], 2006, REV MINERALOGY GEOCH
  • [6] [Anonymous], 2006, CONCRETE MICROSTRUCT
  • [7] Soft X-ray microscopy at a spatial resolution better than 15nm
    Chao, WL
    Harteneck, BD
    Liddle, JA
    Anderson, EH
    Attwood, DT
    [J]. NATURE, 2005, 435 (7046) : 1210 - 1213
  • [8] A neutron scattering study of the role of diffusion in the hydration of tricalcium silicate
    FitzGerald, SA
    Thomas, JJ
    Neumann, DA
    Livingston, RA
    [J]. CEMENT AND CONCRETE RESEARCH, 2002, 32 (03) : 409 - 413
  • [9] Proposed mechanism of C-S-H growth tested by soft X-ray microscopy
    Gartner, EM
    Kurtis, KE
    Monteiro, PJM
    [J]. CEMENT AND CONCRETE RESEARCH, 2000, 30 (05) : 817 - 822
  • [10] Implementation of a fast method for high resolution phase contrast tomography
    Groso, A.
    Abela, R.
    Stampanoni, M.
    [J]. OPTICS EXPRESS, 2006, 14 (18) : 8103 - 8110
1234