Ettringite and calcium sulfoaluminate cement: investigation of water content by near-infrared spectroscopy

被引：56

作者：

Gastaldi, Daniela ^{[1
]}

Canonico, Fulvio ^{[1
]}

Boccaleri, Enrico ^{[2
]}

机构：

[1] Buzzi Unicem SpA, I-15033 Casale Monferrato, AL, Italy

[2] Univ Piemonte Orientale, Dept Sci & Adv Technol, I-15121 Alessandria, Italy

来源：

JOURNAL OF MATERIALS SCIENCE | 2009年 / 44卷 / 21期

关键词：

THERMAL-DECOMPOSITION; DIFFRACTION;

D O I：

10.1007/s10853-009-3812-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Calcium sulfoaluminate (CSA) cement is a sulfate-based binder whose high-performance hydraulic behavior depends on the rapid formation of ettringite, when grinded clinker is hydrated in presence of gypsum. Ettringite is a calcium aluminum sulfate mineral characterized by high water content, estimated as 32 water molecules per formula unit. Three examples of utilization of near-infrared (NIR) spectroscopy are here shown. First of all, information on water distribution in pure ettringite was deduced and compared with infrared analyses. Then its thermal behavior has been followed up to 400 A degrees C, allowing to improve the knowledge about water loss and thermal decomposition of this hydrated phase. Finally, the obtained results have been employed in order to follow hydration of CSA cement sample, demonstrating thus that NIR spectroscopy, being highly sensitive to water amount and distribution, can be an extremely useful tool for hydration studies.

引用

页码：5788 / 5794

页数：7

共 20 条

[1] ADAMS LD, 1999, 19 INT C CEM MICR CI
[2] THERMAL-BEHAVIOR OF NEAR IR ABSORPTION OF H2O AND NACLO4 AQUEOUS-SOLUTIONS
ANDALORO, G
CHIRICO, P
GUZZIO, G
LEONE, M
PALMAVITTORELLI, MB
[J]. JOURNAL OF CHEMICAL PHYSICS, 1977, 66 (01) : 335 - 341
[3] NEAR-IR ABSORPTION OF H2O AND D2O IN THE LIQUID AND SUPERCOOLED RANGE
ANDALORO, G
LEONE, M
PALMAVITTORELLI, MB
[J]. NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA D-CONDENSED MATTER ATOMIC MOLECULAR AND CHEMICAL PHYSICS FLUIDS PLASMAS BIOPHYSICS, 1983, 2 (05): : 1239 - 1253
[4] Near-infrared spectra of water confined in silica hydrogels in the temperature interval 365-5 K
Cupane, A
Levantino, M
Santangelo, MG
[J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (43) : 11323 - 11328
[5] Raman scattering and X-ray diffraction study of the thermal decomposition of an ettringite-group crystal
Deb, SK
Manghnani, MH
Ross, K
Livingston, RA
Monteiro, PJM
[J]. PHYSICS AND CHEMISTRY OF MINERALS, 2003, 30 (01) : 31 - 38
[6] ETABLISSEMENT POLIET, Patent No. 780747
[7] Hydration water and microstructure in calcium silicate and aluminate hydrates
Fratini, Emiliano
Ridi, Francesca
Chen, Sow-Hsin
Baglioni, Piero
[J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 2006, 18 (36) : S2467 - S2483
[8] The use of Raman spectroscopy as a versatile characterization tool for calcium sulphoaluminate cements: a compositional and hydration study
Gastaldi, Daniela
Boccaleri, Enrico
Canonico, Fulvio
Bianchi, Manuela
[J]. JOURNAL OF MATERIALS SCIENCE, 2007, 42 (20) : 8426 - 8432
[9] Mineralogical characteristics of Ettringites synthesized from solutions and suspensions
Goetz-Neunhoeffer, F
Neubauer, J
Schwesig, P
[J]. CEMENT AND CONCRETE RESEARCH, 2006, 36 (01) : 65 - 70
[10] Thermal decomposition of ettringite Ca-6[Al(OH)(6)](2)(SO4)(3).26H(2)O
Hall, C
Barnes, P
Billimore, AD
Jupe, AC
Turrillas, X
[J]. JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1996, 92 (12): : 2125 - 2129

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