The Experts below are selected from a list of 3 Experts worldwide ranked by ideXlab platform
Craig W Hargis - One of the best experts on this subject based on the ideXlab platform.
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early age hydration of calcium sulfoaluminate synthetic ye elimite in the presence of gypsum and varying amounts of calcium hydroxide
Cement and Concrete Research, 2013Co-Authors: Craig W Hargis, Ana Paula Kirchheim, Paulo J M Monteiro, Ellis GartnerAbstract:Abstract Suspensions of synthetic ye'elimite ( C 4 A 3 S ¯ ) in a saturated gypsum ( C S ¯ H 2 ) and calcium hydroxide (CH) solution were examined in-situ in a wet cell by soft X-ray transmission microscopy and ex-situ by scanning electron microscopy. The most voluminous hydration product observed was ettringite. Ettringite commonly displayed acicular, filiform, reticulated, and Stellate Crystal habits. Additionally, pastes with C 4 A 3 S ¯ , 15% C S ¯ H 2 , and varying amounts of CH were prepared and examined with X-ray diffraction (XRD) and isothermal calorimetry. The XRD experiments showed that increasing CH content caused more solid solution (SO 4 2 − /OH − ) AFm phases to form at early ages ( 1 d). Calorimetry indicated that the increased production of solid solution AFm was accompanied with an increase in the initial (
Ana Paula Kirchheim - One of the best experts on this subject based on the ideXlab platform.
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early age hydration of calcium sulfoaluminate synthetic ye elimite in the presence of gypsum and varying amounts of calcium hydroxide
Cement and Concrete Research, 2013Co-Authors: Craig W Hargis, Ana Paula Kirchheim, Paulo J M Monteiro, Ellis GartnerAbstract:Abstract Suspensions of synthetic ye'elimite ( C 4 A 3 S ¯ ) in a saturated gypsum ( C S ¯ H 2 ) and calcium hydroxide (CH) solution were examined in-situ in a wet cell by soft X-ray transmission microscopy and ex-situ by scanning electron microscopy. The most voluminous hydration product observed was ettringite. Ettringite commonly displayed acicular, filiform, reticulated, and Stellate Crystal habits. Additionally, pastes with C 4 A 3 S ¯ , 15% C S ¯ H 2 , and varying amounts of CH were prepared and examined with X-ray diffraction (XRD) and isothermal calorimetry. The XRD experiments showed that increasing CH content caused more solid solution (SO 4 2 − /OH − ) AFm phases to form at early ages ( 1 d). Calorimetry indicated that the increased production of solid solution AFm was accompanied with an increase in the initial (
Paulo J M Monteiro - One of the best experts on this subject based on the ideXlab platform.
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early age hydration of calcium sulfoaluminate synthetic ye elimite in the presence of gypsum and varying amounts of calcium hydroxide
Cement and Concrete Research, 2013Co-Authors: Craig W Hargis, Ana Paula Kirchheim, Paulo J M Monteiro, Ellis GartnerAbstract:Abstract Suspensions of synthetic ye'elimite ( C 4 A 3 S ¯ ) in a saturated gypsum ( C S ¯ H 2 ) and calcium hydroxide (CH) solution were examined in-situ in a wet cell by soft X-ray transmission microscopy and ex-situ by scanning electron microscopy. The most voluminous hydration product observed was ettringite. Ettringite commonly displayed acicular, filiform, reticulated, and Stellate Crystal habits. Additionally, pastes with C 4 A 3 S ¯ , 15% C S ¯ H 2 , and varying amounts of CH were prepared and examined with X-ray diffraction (XRD) and isothermal calorimetry. The XRD experiments showed that increasing CH content caused more solid solution (SO 4 2 − /OH − ) AFm phases to form at early ages ( 1 d). Calorimetry indicated that the increased production of solid solution AFm was accompanied with an increase in the initial (
Ellis Gartner - One of the best experts on this subject based on the ideXlab platform.
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early age hydration of calcium sulfoaluminate synthetic ye elimite in the presence of gypsum and varying amounts of calcium hydroxide
Cement and Concrete Research, 2013Co-Authors: Craig W Hargis, Ana Paula Kirchheim, Paulo J M Monteiro, Ellis GartnerAbstract:Abstract Suspensions of synthetic ye'elimite ( C 4 A 3 S ¯ ) in a saturated gypsum ( C S ¯ H 2 ) and calcium hydroxide (CH) solution were examined in-situ in a wet cell by soft X-ray transmission microscopy and ex-situ by scanning electron microscopy. The most voluminous hydration product observed was ettringite. Ettringite commonly displayed acicular, filiform, reticulated, and Stellate Crystal habits. Additionally, pastes with C 4 A 3 S ¯ , 15% C S ¯ H 2 , and varying amounts of CH were prepared and examined with X-ray diffraction (XRD) and isothermal calorimetry. The XRD experiments showed that increasing CH content caused more solid solution (SO 4 2 − /OH − ) AFm phases to form at early ages ( 1 d). Calorimetry indicated that the increased production of solid solution AFm was accompanied with an increase in the initial (