Degree of hydration of OPC and OPC/Fly ash paste samples conditioned at different relative humidity

Degree of hydration of cement paste controls many properties of hardened concrete and/or mortar such as compressive strength. During the drying process, the degree and the rate of hydration of cement paste in concrete/mortar samples are significantly affected by the ambient relative humidity of the...

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Main Authors:	Shafiq, Nasir, Nuruddin, M Fadhil
Format:	Article
Published:	Penerbit Universiti Tun Hussein Onn Malaysia 2010
Subjects:	TA401-492 Materials of engineering and construction. Mechanics of materials
Online Access:	http://eprints.uthm.edu.my/528/ http://eprints.uthm.edu.my/528/1/IJSCET_1_F5.pdf

id	uthm-528
recordtype	eprints
spelling	uthm-5282011-12-23T08:37:29Z Degree of hydration of OPC and OPC/Fly ash paste samples conditioned at different relative humidity Shafiq, Nasir Nuruddin, M Fadhil TA401-492 Materials of engineering and construction. Mechanics of materials Degree of hydration of cement paste controls many properties of hardened concrete and/or mortar such as compressive strength. During the drying process, the degree and the rate of hydration of cement paste in concrete/mortar samples are significantly affected by the ambient relative humidity of the exposure conditions. There are various parameters such as the amount of calcium hydroxide, Ca(OH)2 in the paste, quantity of the chemically bound water, specific gravity of the paste, fraction of un-hydrated cement, liberated heat of hydration and strength of the hydrated cement may be used to determine the degree of hydration of the cement paste. This paper presents the results of the experimental investigation for the determination of the degree of hydration of 100% cement paste and fly ash blended cement pastes. After 28 days moist curing, the samples were conditioned in 100%, 75%, 65%, 40% and 12% relative humidity. Conditioning of samples in different relative humidity had significant effects on the compressive strength of the mortar samples and the degree of hydration of the paste samples. Conditioning of samples in 100% RH resulted in higher compressive strength and the degree of hydration. Because of the 28 days moist curing and 12 weeks moisture conditioning in different RH, fly ash based samples showed better compressive strength than the OPC samples. Penerbit Universiti Tun Hussein Onn Malaysia 2010 Article PeerReviewed application/pdf http://eprints.uthm.edu.my/528/1/IJSCET_1_F5.pdf Shafiq, Nasir and Nuruddin, M Fadhil (2010) Degree of hydration of OPC and OPC/Fly ash paste samples conditioned at different relative humidity. International Journal of Sustainable Construction Engineering & Technology, 1 (1). pp. 47-56. ISSN 2180-3242 http://eprints.uthm.edu.my/528/
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Tun Hussein Onn Malaysia
building	UTHM Institutional Repository
collection	Online Access
topic	TA401-492 Materials of engineering and construction. Mechanics of materials
spellingShingle	TA401-492 Materials of engineering and construction. Mechanics of materials Shafiq, Nasir Nuruddin, M Fadhil Degree of hydration of OPC and OPC/Fly ash paste samples conditioned at different relative humidity
description	Degree of hydration of cement paste controls many properties of hardened concrete and/or mortar such as compressive strength. During the drying process, the degree and the rate of hydration of cement paste in concrete/mortar samples are significantly affected by the ambient relative humidity of the exposure conditions. There are various parameters such as the amount of calcium hydroxide, Ca(OH)2 in the paste, quantity of the chemically bound water, specific gravity of the paste, fraction of un-hydrated cement, liberated heat of hydration and strength of the hydrated cement may be used to determine the degree of hydration of the cement paste. This paper presents the results of the experimental investigation for the determination of the degree of hydration of 100% cement paste and fly ash blended cement pastes. After 28 days moist curing, the samples were conditioned in 100%, 75%, 65%, 40% and 12% relative humidity. Conditioning of samples in different relative humidity had significant effects on the compressive strength of the mortar samples and the degree of hydration of the paste samples. Conditioning of samples in 100% RH resulted in higher compressive strength and the degree of hydration. Because of the 28 days moist curing and 12 weeks moisture conditioning in different RH, fly ash based samples showed better compressive strength than the OPC samples.
format	Article
author	Shafiq, Nasir Nuruddin, M Fadhil
author_facet	Shafiq, Nasir Nuruddin, M Fadhil
author_sort	Shafiq, Nasir
title	Degree of hydration of OPC and OPC/Fly ash paste samples conditioned at different relative humidity
title_short	Degree of hydration of OPC and OPC/Fly ash paste samples conditioned at different relative humidity
title_full	Degree of hydration of OPC and OPC/Fly ash paste samples conditioned at different relative humidity
title_fullStr	Degree of hydration of OPC and OPC/Fly ash paste samples conditioned at different relative humidity
title_full_unstemmed	Degree of hydration of OPC and OPC/Fly ash paste samples conditioned at different relative humidity
title_sort	degree of hydration of opc and opc/fly ash paste samples conditioned at different relative humidity
publisher	Penerbit Universiti Tun Hussein Onn Malaysia
publishDate	2010
url	http://eprints.uthm.edu.my/528/ http://eprints.uthm.edu.my/528/1/IJSCET_1_F5.pdf
first_indexed	2018-09-05T10:42:46Z
last_indexed	2018-09-05T10:42:46Z
_version_	1610763905331625984

Degree of hydration of OPC and OPC/Fly ash paste samples conditioned at different relative humidity

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