Soft X-ray Spectromicroscopic Investigation of Synthetic C-S-H and C3S Hydration Products

被引：0
|
作者：
机构：
[1] [1,Bae, Sungchul
[2] Taylor, Rae
[3] Hernández-Cruz, Daniel
[4] Yoon, Seyoon
[5] Kilcoyne, David
[6] Monteiro, Paulo J.M
来源：
Monteiro, Paulo J.M (monteiro@ce.berkeley.edu) | 1600年 / Blackwell Publishing Inc., Postfach 10 11 61, 69451 Weinheim, Boschstrabe 12, 69469 Weinheim, Deutschland, 69469, Germany卷 / 98期
关键词：
Calcium silicate hydrates (C-S-H); the primary binding phase in concrete; is the most prominent physiochemical factor controlling the mechanical and chemical properties in the production of concrete. This paper reports the local-binding structure and morphological details of C-S-H as determined by high-resolution X-ray spectromicroscopy. Hydrated tricalcium silicate (C3S) was used to determine the properties and role of the outer products (Op) of C3S. C-S-H with different molar ratios of Ca/Si; were synthesized (Syn-CSH) to quantitatively evaluate the effect of silicate polymerization on Ca L and Si K edge of C-S-H. Near edge X-ray absorption fine structure (NEXAFS) spectroscopy of Syn-CSH showed no variation in peak positions and energy separation for CaLIII; II edge for the Ca/Si ratios investigated. Compared to Syn-CSH; C3S; when hydrated for 17 d; had a similar local structure around Ca. Si K edge NEXAFS analysis on Syn-CSH showed a tendency for the peak positions of both the Si K edge and the peak induced by multiple scattering to shift to higher energy levels. The results also indicated that the distance between the two peaks increased with a decrease of the Ca/Si ratio in Syn-CSH. Silicate polymerization influenced the multiple scattering of distant shell atoms more than the binding energy of the core atoms. Op of C3S had a uniform and higher degree of silicate polymerization compared to the core area. The results imply that Op reduces the hydration process of C3S into the core area thereby playing a key role on the properties of concrete upon formation. © 2015 The American Ceramic Society;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Journal article (JA)
引用
收藏
相关论文
共 50 条
  • [21] Implications for C3S kinetics from combined C3S/CA hydration
    Nehring, Joerg
    Naber, Christoph
    Neubauer, Juergen
    Goetz-Neunhoeffer, Friedlinde
    JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2018, 101 (09) : 4137 - 4145
  • [22] SIMILARITIES BETWEEN THE HYDRATION MECHANISMS OF C3S HYDRATED AS PASTE OR SUSPENSION AND SEEDING EFFECTS OF SIO2 AND C-S-H
    BARRET, P
    BERTRANDIE, D
    MENETRIER, D
    AMERICAN CERAMIC SOCIETY BULLETIN, 1981, 60 (03): : 387 - 387
  • [23] Alkaline Hydration Of C2S and C3S
    Jose Sanchez-Herrero, Maria
    Fernandez-Jimenez, Ana
    Palomo, Angel
    JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2016, 99 (02) : 604 - 611
  • [24] The effect of C3S on the early hydration of C(3)A
    ElAouni, E
    JOURNAL OF THERMAL ANALYSIS, 1995, 45 (06): : 1349 - 1357
  • [25] Characterisation of crystalline C-S-H phases by X-ray photoelectron spectroscopy
    Black, L
    Garbev, K
    Stemmermann, P
    Hallam, KR
    Allen, GC
    CEMENT AND CONCRETE RESEARCH, 2003, 33 (06) : 899 - 911
  • [26] THE PHASE COMPOSITION OF THE PRODUCTS FORMED IN THE HYDRATION OF C3S AND BETA-C2S
    BERKOVICH, TM
    KHEIKER, DM
    GRACHEVA, OI
    KUPREEVA, NI
    DOKLADY AKADEMII NAUK SSSR, 1958, 120 (02): : 372 - 375
  • [27] Effects of superplasticizers on the carbonation resistance of C3S and C3A hydration products
    He, Tingshu
    Shi, Chen
    Li, Guoxin
    Song, Xuefeng
    CONSTRUCTION AND BUILDING MATERIALS, 2012, 36 : 954 - 959
  • [28] Hydration of C3S thin films
    Rheinheimer, Vanessa
    Casanova, Ignasi
    CEMENT AND CONCRETE RESEARCH, 2012, 42 (04) : 593 - 597
  • [29] NEW DATA ON C3S HYDRATION
    MENETRIER, D
    JAWED, I
    SUN, T
    SKALNY, J
    AMERICAN CERAMIC SOCIETY BULLETIN, 1979, 58 (03): : 353 - 353
  • [30] STRESS AS A FACTOR IN THE HYDRATION OF C3S
    BALL, MC
    CEMENT AND CONCRETE RESEARCH, 1983, 13 (05) : 744 - 746
12345