Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Xiandong Cong"'
Structural Studies of Jennite and 1.4 nm Tobermorite: Disordered Layering along the [100] of Jennite
Publikováno v:
Journal of the American Ceramic Society. 80:3021-3028
Transmission electron microscopy of synthetic jennite reveals strong streaking in the electron diffraction patterns along the [100], along which dark-field imaging and lattice fringing confirm the presence of a layering with a striation-like morpholo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b5de0d9c75152f2249fce6e691e5ad96
https://doi.org/10.1111/j.1151-2916.1997.tb03228.x
https://doi.org/10.1111/j.1151-2916.1997.tb03228.x
Publikováno v:
Journal of the American Ceramic Society. 82:742-748
The mid-, near-, and far-infrared (IR) spectra of synthetic, single-phase calcium silicate hydrates (C-S-H) with Ca/Si ratios (C/S) of 0.41–1.85, 1.4 nm tobermorite, 1.1 nm tobermorite, and jennite confirm the similarity of the structure of these p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e847b7dac58fcf08d0f7c368ca241c1b
https://doi.org/10.1111/j.1151-2916.1999.tb01826.x
https://doi.org/10.1111/j.1151-2916.1999.tb01826.x
Publikováno v:
Advanced Cement Based Materials. 5:93-99
Raman spectra of single-phase calcium-silicate hydrate (C-S-H) samples with C/S ratios between 0.88 and 1.45 are consistent with a defect tobermorite model for the structure of these materials, in agreement with previously published nuclear magnetic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c8d29c8a34060047ca406c4436b22a7c
https://doi.org/10.1016/s1065-7355(97)00001-1
https://doi.org/10.1016/s1065-7355(97)00001-1
Publikováno v:
Advances in Cement Research. 9:31-36
Calcium K-edge (4038 eV) X-ray absorption spectroscopy (XAS) of wet and dry Ca-silicate hydrate (C—S—H) samples and model compounds (calcite, xonotlite, 11 Å tobermorite, and 14 Å tobermorite) show that the local structure of single-phase C—S
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1cdd5f063476ffc02bc81af958d4a970
https://doi.org/10.1680/adcr.1997.9.33.31
https://doi.org/10.1680/adcr.1997.9.33.31
Autor:
R. James Kirkpatrick, Xiandong Cong
Publikováno v:
Journal of the American Ceramic Society. 79:1585-1592
This paper presents the results of a systematic investigation of the structure of hydrothermally synthesized calcium silicate hydrate gel using 17O MAS NMR at 11.7 T and MAS frequencies up to 12 kHz. The results support the previously proposed defect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b8b70fca0436374e1727513165b79c1
https://doi.org/10.1111/j.1151-2916.1996.tb08768.x
https://doi.org/10.1111/j.1151-2916.1996.tb08768.x
Autor:
R. James Kirkpatrick, Xiandong Cong
Publikováno v:
Advanced Cement Based Materials. 3:144-156
This paper presents the results of a comprehensive investigation of single-phase calcium silicate hydrate (CSH) with known compositions using the combined capabilities of 29Si magic angle spinning (MAS) NMR, powder X-ray diffraction (XRD), and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17a63bc2d8cb2aa118b4d5abe825ffa7
https://doi.org/10.1016/s1065-7355(96)90046-2
https://doi.org/10.1016/s1065-7355(96)90046-2
Autor:
R. James Kirkpatrick, Xiandong Cong
Publikováno v:
Advanced Cement Based Materials. 3:133-143
This paper presents the results of a systematic investigation of the structure of 17O-enriched, hydrothermally synthesized 1.1-nm tobermorite, 1.4-nm tobermorite, jennite, calciochondrodite, xonotlite, and hillebrandite, using 29Si magic angle spinni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d3213995e5e3f73142095c81b4fdd69
https://doi.org/10.1016/s1065-7355(96)90045-0
https://doi.org/10.1016/s1065-7355(96)90045-0
Autor:
Xiandong Cong, R. James Kirkpatrick
Publikováno v:
Cement and Concrete Research. 25:1237-1245
This paper describes the structural changes of CSH caused by curing at different relative humidities (R. H.) and temperatures using XRD, 29Si NMR and thermal analysis. The results show that within the relative humidity range studied (9%–100%)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::75b16949295246d007f1381bc5ce25f3
https://doi.org/10.1016/0008-8846(95)00116-t
https://doi.org/10.1016/0008-8846(95)00116-t
Autor:
R. James Kirkpatrick, Xiandong Cong
Publikováno v:
Cement and Concrete Research. 23:1065-1077
17O and 29Si MAS and CPMAS NMR spectroscopy has been used to study the mechanism of hydration of β–C2S and the structure of calcium silicate hydrates (CSH) formed both during hydration of β–C2S and synthesized separately. β–C2S was reacted w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b74287ba9e5f8347edcd48219fcaadc
https://doi.org/10.1016/0008-8846(93)90166-7
https://doi.org/10.1016/0008-8846(93)90166-7
Publikováno v:
Cement and Concrete Research. 23:811-823
29 Si magic angle spinning NMR spectroscopy and 1 H 29 Si cross-polarization MAS results are reported for gels prepared by reactions of a nevada opal, Beltane opal, and cristobalite with KOH in the presence and Ca(OH 2 ). The extents of the reacti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a92a2b9bc36521b4c1994c04dd1b1b70
https://doi.org/10.1016/0008-8846(93)90035-8
https://doi.org/10.1016/0008-8846(93)90035-8