Impact of Liquid Whey Waste on Strength and Stiffness of Cement Treated Clay

Pham Ngoc, T; Fatahi, B; Khabbaz, M

Impact of Liquid Whey Waste on Strength and Stiffness of Cement Treated Clay

Pham Ngoc, T

Fatahi, B

Khabbaz, M

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Publisher:: Springer, Cham
Publication Type:: Conference Proceeding
Citation:: New Developments in Soil Characterization and Soil Stability, 2018, pp. 1 - 10 (10)
Issue Date:: 2018-07-19

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Field	Value	Language
dc.contributor.author	Pham Ngoc, T https://orcid.org/0000-0003-4827-3924	en_US
dc.contributor.author	Fatahi, B https://orcid.org/0000-0002-7920-6946	en_US
dc.contributor.author	Khabbaz, M https://orcid.org/0000-0001-6637-4601	en_US
dc.contributor.editor	Frikha, W	en_US
dc.contributor.editor	Kawamura, S	en_US
dc.contributor.editor	Wen-Cheng, L	en_US
dc.date	2018-07-23	en_US
dc.date.issued	2018-07-19	en_US
dc.identifier.citation	New Developments in Soil Characterization and Soil Stability, 2018, pp. 1 - 10 (10)	en_US
dc.identifier.uri	http://hdl.handle.net/10453/127217
dc.description.abstract	The reuse of whey waste, a by-product of the dairy industry, is an emerging issue due to the environmental impacts. Some previous experimental studies have indicated that whey waste can be used as an admixture for cement-based materials, including mortar and concrete, to reduce the setting time and increase the workability, thus reduce the amount of required cement. However, influence of whey waste on cemented soil has not received sufficient attention. This study investigates variations of unconfined compressive strength (UCS) and Young's modulus (E) of cemented Kaolin clay when water in cement slurry was replaced by different whey waste proportions. Unconfined compression tests were conducted on treated specimens after two different curing times, namely 14 days and 56 days. Stress-strain relationship in each test was used to compute UCS and E at different dosages of cement and whey waste. Results of the experiments show improvements of UCS and E only for specimens when less than 10% water in cement slurry was replaced by liquid whey waste at 56 day-curing age, regardless of cement dosage. For the other cases, the presence of whey waste resulted in reductions of both UCS and E, indicating that although whey waste can be used to improve mechanical properties of cement treated clay, the optimum dosage should be selected very carefully to minimize the adverse effects. Different responses of UCS and E with curing age, dosages of cement and liquid whey waste are explained while discussing about the effects of lactose (milk sugar) available in whey waste acting as a retarding agent.	en_US
dc.publisher	Springer, Cham	en_US
dc.relation.ispartof	New Developments in Soil Characterization and Soil Stability	en_US
dc.relation.ispartof	Civil Infrastructures Confronting Severe Weathers and Climate Changes Conference	en_US
dc.title	Impact of Liquid Whey Waste on Strength and Stiffness of Cement Treated Clay	en_US
dc.type	Conference Proceeding
utslib.location.activity	Hangzhou, China	en_US
utslib.for	0905 Civil Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
utslib.copyright.status	closed_access
pubs.consider-herdc	true	en_US
pubs.finish-date	2018-07-25	en_US
pubs.publication-status	Published online	en_US
pubs.start-date	2018-07-23	en_US

Abstract:

The reuse of whey waste, a by-product of the dairy industry, is an emerging issue due to the environmental impacts. Some previous experimental studies have indicated that whey waste can be used as an admixture for cement-based materials, including mortar and concrete, to reduce the setting time and increase the workability, thus reduce the amount of required cement. However, influence of whey waste on cemented soil has not received sufficient attention. This study investigates variations of unconfined compressive strength (UCS) and Young's modulus (E) of cemented Kaolin clay when water in cement slurry was replaced by different whey waste proportions. Unconfined compression tests were conducted on treated specimens after two different curing times, namely 14 days and 56 days. Stress-strain relationship in each test was used to compute UCS and E at different dosages of cement and whey waste. Results of the experiments show improvements of UCS and E only for specimens when less than 10% water in cement slurry was replaced by liquid whey waste at 56 day-curing age, regardless of cement dosage. For the other cases, the presence of whey waste resulted in reductions of both UCS and E, indicating that although whey waste can be used to improve mechanical properties of cement treated clay, the optimum dosage should be selected very carefully to minimize the adverse effects. Different responses of UCS and E with curing age, dosages of cement and liquid whey waste are explained while discussing about the effects of lactose (milk sugar) available in whey waste acting as a retarding agent.

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http://hdl.handle.net/10453/127217