Plaster materials from waste calcium sulfate containing chemicals, organic fibers and inorganic additives

Plaster materials made of waste gypsum or flue-gas-desulferized (FGD) gypsum with chemicals;organic and inorganic additives were studied. Glucose;citric acid and sodium bicarbonate were incorporated to retard the hydration of plaster. Saw dust (SD);coconut fibers (CCF) and tobacco waste fiber (TWF)...

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Main Authors: Chindaprasirt P., Boonserm K., Chairuangsri T., Vichit-Vadakan W., Eaimsin T., Sato T., Pimraksa K.
Format: Article
Language:English
Published: 2014
Online Access:http://www.scopus.com/inward/record.url?eid=2-s2.0-79955586879&partnerID=40&md5=2ef66e9d28c625abef56a80285d08305
http://cmuir.cmu.ac.th/handle/6653943832/6479
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Institution: Chiang Mai University
Language: English
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spelling th-cmuir.6653943832-64792014-08-30T03:24:16Z Plaster materials from waste calcium sulfate containing chemicals, organic fibers and inorganic additives Chindaprasirt P. Boonserm K. Chairuangsri T. Vichit-Vadakan W. Eaimsin T. Sato T. Pimraksa K. Plaster materials made of waste gypsum or flue-gas-desulferized (FGD) gypsum with chemicals;organic and inorganic additives were studied. Glucose;citric acid and sodium bicarbonate were incorporated to retard the hydration of plaster. Saw dust (SD);coconut fibers (CCF) and tobacco waste fiber (TWF) were incorporated to improve the thermal property. Diatomaceous earth (DE);fly ash (FA) and bottom ash (BA) were incorporated to improve the mechanical and thermal properties. Citric acid;TWF;sodium bicarbonate and glucose could be used to retard the setting time of fresh FGD-plaster to approximately 25 min comparable to that of commercial plaster while the other additives did not retard the hydration. In presences of these retarding additives;needle shaped gypsum changed into lower aspect ratio particles. SD;CCF;DE;FA and BA modified gypsum crystal growth and reduced the crystal length. These changes in morphology consequently gave significant alterations of mechanical and thermal properties of the materials. The additions of organic and inorganic additives resulted in a reduction of bulk density and increases in water absorption;and similar strength compared to commercial gypsum. A good thermal insulating property was obtained from the samples with the incorporation of coconut fiber;BA and DE. In addition;these samples had a good performance in fire proof. © 2011 Elsevier Ltd. All rights reserved. 2014-08-30T03:24:16Z 2014-08-30T03:24:16Z 2011 Article 9500618 10.1016/j.conbuildmat.2011.03.004 CBUME http://www.scopus.com/inward/record.url?eid=2-s2.0-79955586879&partnerID=40&md5=2ef66e9d28c625abef56a80285d08305 http://cmuir.cmu.ac.th/handle/6653943832/6479 English
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
language English
description Plaster materials made of waste gypsum or flue-gas-desulferized (FGD) gypsum with chemicals;organic and inorganic additives were studied. Glucose;citric acid and sodium bicarbonate were incorporated to retard the hydration of plaster. Saw dust (SD);coconut fibers (CCF) and tobacco waste fiber (TWF) were incorporated to improve the thermal property. Diatomaceous earth (DE);fly ash (FA) and bottom ash (BA) were incorporated to improve the mechanical and thermal properties. Citric acid;TWF;sodium bicarbonate and glucose could be used to retard the setting time of fresh FGD-plaster to approximately 25 min comparable to that of commercial plaster while the other additives did not retard the hydration. In presences of these retarding additives;needle shaped gypsum changed into lower aspect ratio particles. SD;CCF;DE;FA and BA modified gypsum crystal growth and reduced the crystal length. These changes in morphology consequently gave significant alterations of mechanical and thermal properties of the materials. The additions of organic and inorganic additives resulted in a reduction of bulk density and increases in water absorption;and similar strength compared to commercial gypsum. A good thermal insulating property was obtained from the samples with the incorporation of coconut fiber;BA and DE. In addition;these samples had a good performance in fire proof. © 2011 Elsevier Ltd. All rights reserved.
format Article
author Chindaprasirt P.
Boonserm K.
Chairuangsri T.
Vichit-Vadakan W.
Eaimsin T.
Sato T.
Pimraksa K.
spellingShingle Chindaprasirt P.
Boonserm K.
Chairuangsri T.
Vichit-Vadakan W.
Eaimsin T.
Sato T.
Pimraksa K.
Plaster materials from waste calcium sulfate containing chemicals, organic fibers and inorganic additives
author_facet Chindaprasirt P.
Boonserm K.
Chairuangsri T.
Vichit-Vadakan W.
Eaimsin T.
Sato T.
Pimraksa K.
author_sort Chindaprasirt P.
title Plaster materials from waste calcium sulfate containing chemicals, organic fibers and inorganic additives
title_short Plaster materials from waste calcium sulfate containing chemicals, organic fibers and inorganic additives
title_full Plaster materials from waste calcium sulfate containing chemicals, organic fibers and inorganic additives
title_fullStr Plaster materials from waste calcium sulfate containing chemicals, organic fibers and inorganic additives
title_full_unstemmed Plaster materials from waste calcium sulfate containing chemicals, organic fibers and inorganic additives
title_sort plaster materials from waste calcium sulfate containing chemicals, organic fibers and inorganic additives
publishDate 2014
url http://www.scopus.com/inward/record.url?eid=2-s2.0-79955586879&partnerID=40&md5=2ef66e9d28c625abef56a80285d08305
http://cmuir.cmu.ac.th/handle/6653943832/6479
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