Setting time and heat of hydration of wastepaper sludge ash-ground granulated blastfurnace slag blended cements

This paper reports the results of an investigation of the setting times and heats of hydration of WSA-GGBS and WSA-GGBS-PC blended pastes. Setting time tests were carried out in accordance with BS EN 196-3 and also at a constant w/b ratio (0.5). Regardless of the test procedure used, the setting tim...

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Main Authors: A. Chaipanich, J. Bai, M. O'Farrell, J. M. Kinuthia, B. B. Sabir, S. Wild
Format: Conference Proceeding
Published: 2018
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/62204
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-622042018-09-11T09:23:32Z Setting time and heat of hydration of wastepaper sludge ash-ground granulated blastfurnace slag blended cements A. Chaipanich J. Bai M. O'Farrell J. M. Kinuthia B. B. Sabir S. Wild Engineering This paper reports the results of an investigation of the setting times and heats of hydration of WSA-GGBS and WSA-GGBS-PC blended pastes. Setting time tests were carried out in accordance with BS EN 196-3 and also at a constant w/b ratio (0.5). Regardless of the test procedure used, the setting times of WSA-GGBS blended pastes were found to decrease with increasing WSA content. Gypsum and a plasticiser/retarder admixture were used to extend the initial setting time in order to aid mixing and casting of pastes. The latter was found to effectively extend the initial setting time similar to that of the PC pastes. However, it is apparent that only a small dosage is required and overdosing can lead to excessive retardation of the final set. Heat evolution results of WSA-GGBS pastes show that more heat is produced and the rate of heat evolution also increased with increasing WSA content. 2018-09-11T09:23:32Z 2018-09-11T09:23:32Z 2005-12-01 Conference Proceeding 2-s2.0-33644490571 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=33644490571&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/62204
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Engineering
spellingShingle Engineering
A. Chaipanich
J. Bai
M. O'Farrell
J. M. Kinuthia
B. B. Sabir
S. Wild
Setting time and heat of hydration of wastepaper sludge ash-ground granulated blastfurnace slag blended cements
description This paper reports the results of an investigation of the setting times and heats of hydration of WSA-GGBS and WSA-GGBS-PC blended pastes. Setting time tests were carried out in accordance with BS EN 196-3 and also at a constant w/b ratio (0.5). Regardless of the test procedure used, the setting times of WSA-GGBS blended pastes were found to decrease with increasing WSA content. Gypsum and a plasticiser/retarder admixture were used to extend the initial setting time in order to aid mixing and casting of pastes. The latter was found to effectively extend the initial setting time similar to that of the PC pastes. However, it is apparent that only a small dosage is required and overdosing can lead to excessive retardation of the final set. Heat evolution results of WSA-GGBS pastes show that more heat is produced and the rate of heat evolution also increased with increasing WSA content.
format Conference Proceeding
author A. Chaipanich
J. Bai
M. O'Farrell
J. M. Kinuthia
B. B. Sabir
S. Wild
author_facet A. Chaipanich
J. Bai
M. O'Farrell
J. M. Kinuthia
B. B. Sabir
S. Wild
author_sort A. Chaipanich
title Setting time and heat of hydration of wastepaper sludge ash-ground granulated blastfurnace slag blended cements
title_short Setting time and heat of hydration of wastepaper sludge ash-ground granulated blastfurnace slag blended cements
title_full Setting time and heat of hydration of wastepaper sludge ash-ground granulated blastfurnace slag blended cements
title_fullStr Setting time and heat of hydration of wastepaper sludge ash-ground granulated blastfurnace slag blended cements
title_full_unstemmed Setting time and heat of hydration of wastepaper sludge ash-ground granulated blastfurnace slag blended cements
title_sort setting time and heat of hydration of wastepaper sludge ash-ground granulated blastfurnace slag blended cements
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=33644490571&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/62204
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