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Kinetic study of the hydrothermal reaction between lime and rice-husk-ash silica

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Main Authors: Khangaonkar, P R, Azmi, Rahmat, Assoc. Prof. Dr., Jolly Kutty, K. G.
Other Authors: azmirahmat@unimap.edu.my
Format: Article
Language:English
Published: Elsevier Limited 2014
Subjects:
Rice husk ash
Hydrothermal reactions
Lime > reaction kinetics
Concrete aggregates
Online Access:http://dspace.unimap.edu.my:80/dspace/handle/123456789/35125
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spelling my.unimap-351252014-06-06T01:40:39Z Kinetic study of the hydrothermal reaction between lime and rice-husk-ash silica Khangaonkar, P R Azmi, Rahmat, Assoc. Prof. Dr. Jolly Kutty, K. G. azmirahmat@unimap.edu.my Rice husk ash Hydrothermal reactions Lime--reaction kinetics Concrete aggregates Link to publisher's homepage at http://www.sciencedirect.com/ The paper describes a study of the reaction between lime and amorphous silica obtained from rice-husk (93-94% SiO2) under hydrothermal conditions, in the range 80-140°C. The progress of the reaction, conducted in stainless steel bombs was followed by analysing unreacted lime. It was observed that the reactionfollows two-stage progress pattern similar to the one reported earlier for lime-quartz hydrothermal reactions. X-ray diffractometry and DTA on the reactionproducts of both stage 1 and stage 2 indicated the formation of CSH (1), calcium-silicate-monohydrate in both the stages. An earlier model by Bezjak and coworkers developed for two-stage transformation observed in lime-quartz hydrothermal reaction was examined for a possible application to the data from the present work. Calculations were made following the general assumptions of the model, which could be applied satisfactorily to the first stage, but not the second stage, possibly because of the relatively more rapid reaction between lime and amorphous silica in the first-stage, creating sluggishness in the second stage. 2014-06-06T01:40:39Z 2014-06-06T01:40:39Z 1992 Article Cement and Concrete Research, vol.22(4),1992, pages 577-588 00088846 http://www.sciencedirect.com/science/article/pii/000888469290008J# http://dspace.unimap.edu.my:80/dspace/handle/123456789/35125 en Elsevier Limited
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Rice husk ash
Hydrothermal reactions
Lime--reaction kinetics
Concrete aggregates
spellingShingle Rice husk ash
Hydrothermal reactions
Lime--reaction kinetics
Concrete aggregates
Khangaonkar, P R
Azmi, Rahmat, Assoc. Prof. Dr.
Jolly Kutty, K. G.
Kinetic study of the hydrothermal reaction between lime and rice-husk-ash silica
description Link to publisher's homepage at http://www.sciencedirect.com/
author2 azmirahmat@unimap.edu.my
author_facet azmirahmat@unimap.edu.my
Khangaonkar, P R
Azmi, Rahmat, Assoc. Prof. Dr.
Jolly Kutty, K. G.
format Article
author Khangaonkar, P R
Azmi, Rahmat, Assoc. Prof. Dr.
Jolly Kutty, K. G.
author_sort Khangaonkar, P R
title Kinetic study of the hydrothermal reaction between lime and rice-husk-ash silica
title_short Kinetic study of the hydrothermal reaction between lime and rice-husk-ash silica
title_full Kinetic study of the hydrothermal reaction between lime and rice-husk-ash silica
title_fullStr Kinetic study of the hydrothermal reaction between lime and rice-husk-ash silica
title_full_unstemmed Kinetic study of the hydrothermal reaction between lime and rice-husk-ash silica
title_sort kinetic study of the hydrothermal reaction between lime and rice-husk-ash silica
publisher Elsevier Limited
publishDate 2014
url http://dspace.unimap.edu.my:80/dspace/handle/123456789/35125
_version_ 1643797713646518272
score 13.222552

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