Studies of Surface Area and Pore Structure on Portland Cement Produced in Bajil and Amran, Yemen

Portland cement pastes of various porosities were prepared using water/cement ratios of 0.30, 0.35, 0.40, 0.45, 0.50 and 0.55; and were hydrated for various time intervals ranging from 0.021 to 28 days. Pore structure and VL–t plots (plots of volume vs. thickness) of the hardened cement pastes were...

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Main Authors:	A.M. Saad, Abdul-Basit A. Saleh, Fatima A. Al-Kadri, Abdulla S. Babaqi, Abdulla A. Basissa, S.A. Abo El-Enein
Format:	Article
Language:	English
Published:	Sultan Qaboos University 2008-06-01
Series:	Sultan Qaboos University Journal for Science
Subjects:	Surface area Pore size Portland cement Cement paste Adsorption.
Online Access:	https://journals.squ.edu.om/index.php/squjs/article/view/349

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spelling	doaj-9ba61fb7789540a6a4b9e78a851ae7bb2020-11-25T00:33:47ZengSultan Qaboos UniversitySultan Qaboos University Journal for Science1027-524X2414-536X2008-06-01130132510.24200/squjs.vol13iss0pp13-25348Studies of Surface Area and Pore Structure on Portland Cement Produced in Bajil and Amran, YemenA.M. Saad0Abdul-Basit A. Saleh1Fatima A. Al-Kadri2Abdulla S. Babaqi3Abdulla A. Basissa4S.A. Abo El-Enein5Department of Chemistry, Faculty of Science, Sana'a University, P.O. Box 11923, Sana'aDepartment of Physics, Faculty of Science, Sana'a University, P.O.Box 8211, Sana'a, YemenDepartment of Chemistry, Faculty of Science, Sana'a University, P.O. Box 11923, Sana'aDepartment of Chemistry, Faculty of Science, Sana'a University, P.O. Box 11923, Sana'aDepartment of Chemistry, Faculty of Science, Sana'a University, P.O. Box 11923, Sana'aDepartment of Chemistry, Faculty of Science, Ain-Shams University, EgyptPortland cement pastes of various porosities were prepared using water/cement ratios of 0.30, 0.35, 0.40, 0.45, 0.50 and 0.55; and were hydrated for various time intervals ranging from 0.021 to 28 days. Pore structure and VL–t plots (plots of volume vs. thickness) of the hardened cement pastes were measured using nitrogen gas as the adsorbate. The results were found to be related to the mechanism of hydration as controlled by the pore system of the hardened pastes. Type ІІ adsorption isotherms of nitrogen were obtained for all hardened cement pastes. The adsorption-desorption isotherms indicated the existence of closed hysteresis loops for most of the investigated samples and in some other cases, these isotherms were fully reversible.https://journals.squ.edu.om/index.php/squjs/article/view/349Surface areaPore sizePortland cementCement pasteAdsorption.
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	A.M. Saad Abdul-Basit A. Saleh Fatima A. Al-Kadri Abdulla S. Babaqi Abdulla A. Basissa S.A. Abo El-Enein
spellingShingle	A.M. Saad Abdul-Basit A. Saleh Fatima A. Al-Kadri Abdulla S. Babaqi Abdulla A. Basissa S.A. Abo El-Enein Studies of Surface Area and Pore Structure on Portland Cement Produced in Bajil and Amran, Yemen Sultan Qaboos University Journal for Science Surface area Pore size Portland cement Cement paste Adsorption.
author_facet	A.M. Saad Abdul-Basit A. Saleh Fatima A. Al-Kadri Abdulla S. Babaqi Abdulla A. Basissa S.A. Abo El-Enein
author_sort	A.M. Saad
title	Studies of Surface Area and Pore Structure on Portland Cement Produced in Bajil and Amran, Yemen
title_short	Studies of Surface Area and Pore Structure on Portland Cement Produced in Bajil and Amran, Yemen
title_full	Studies of Surface Area and Pore Structure on Portland Cement Produced in Bajil and Amran, Yemen
title_fullStr	Studies of Surface Area and Pore Structure on Portland Cement Produced in Bajil and Amran, Yemen
title_full_unstemmed	Studies of Surface Area and Pore Structure on Portland Cement Produced in Bajil and Amran, Yemen
title_sort	studies of surface area and pore structure on portland cement produced in bajil and amran, yemen
publisher	Sultan Qaboos University
series	Sultan Qaboos University Journal for Science
issn	1027-524X 2414-536X
publishDate	2008-06-01
description	Portland cement pastes of various porosities were prepared using water/cement ratios of 0.30, 0.35, 0.40, 0.45, 0.50 and 0.55; and were hydrated for various time intervals ranging from 0.021 to 28 days. Pore structure and VL–t plots (plots of volume vs. thickness) of the hardened cement pastes were measured using nitrogen gas as the adsorbate. The results were found to be related to the mechanism of hydration as controlled by the pore system of the hardened pastes. Type ІІ adsorption isotherms of nitrogen were obtained for all hardened cement pastes. The adsorption-desorption isotherms indicated the existence of closed hysteresis loops for most of the investigated samples and in some other cases, these isotherms were fully reversible.
topic	Surface area Pore size Portland cement Cement paste Adsorption.
url	https://journals.squ.edu.om/index.php/squjs/article/view/349
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Studies of Surface Area and Pore Structure on Portland Cement Produced in Bajil and Amran, Yemen

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