Drying shrinkage of hydrothermally cured cements with reactive magnesia and clay brick waste

Liu, B; Ray, AS; Thomas, P

Drying shrinkage of hydrothermally cured cements with reactive magnesia and clay brick waste

Liu, B Ray, AS Thomas, P

Permalink

Publisher:: Aalborg University
Publication Type:: Conference Proceeding
Citation:: Proceedings of the 12th International Inorganic-Bonded Fiber Composites Conference, 2010, pp. 90 - 95
Issue Date:: 2010-01

Open Access

Copyright Clearance Process

Recently Added
In Progress
Open Access

This item is open access.

Adobe PDF

Download full textAdobe PDF (2.69 MB)

View statistics

Full metadata record

Field	Value	Language
dc.contributor.author	Liu, B	en_US
dc.contributor.author	Ray, AS	en_US
dc.contributor.author	Thomas, P https://orcid.org/0000-0001-6962-2121	en_US
dc.contributor.editor	Sorensen, EV	en_US
dc.contributor.editor	Thygesen, HM	en_US
dc.date	2010-09-21	en_US
dc.date.issued	2010-01	en_US
dc.identifier.citation	Proceedings of the 12th International Inorganic-Bonded Fiber Composites Conference, 2010, pp. 90 - 95	en_US
dc.identifier.uri	http://hdl.handle.net/10453/16417
dc.description.abstract	In recent years, worldwide research and development in the cement industry has gathered momentum with an aim to explore innovative and sustainable methods to deliver environmentally responsible Portland Cement (PC) based construction products. This study investigated physical and mechanical properties of autoclaved cement-quartz sand blends with the addition of clay-brick waste (CB waste) and reactive magnesia (MgO) with the aim to lower CO2 emissions through the reduction of PC consumption. Mechanical properties and drying shrinkage showed improvements with the incorporation of CB waste due to increased amounts and crystallinity of Al-tobermorite. The addition of reactive MgO to PC in hydrothermal conditions was observed to have a negative effect on the compressive strength. XRD data indicated that MgO did not take part in the reaction during the hydration of the cement and may even retard tobermorite formation. However, the expansive nature from the hydration of MgO to brucite may have compensated for drying shrinkage.	en_US
dc.publisher	Aalborg University	en_US
dc.relation.ispartof	Proceedings of the 12th International Inorganic-Bonded Fiber Composites Conference	en_US
dc.relation.ispartof	International Inorganic-Bonded Fiber Composites Conference	en_US
dc.title	Drying shrinkage of hydrothermally cured cements with reactive magnesia and clay brick waste	en_US
dc.type	Conference Proceeding
utslib.location	Denmark	en_US
utslib.location.activity	Aalborg, Denmark	en_US
utslib.for	0905 Civil Engineering	en_US
dc.location.activity	Aalborg, Denmark	en_US
dc.location.activity	Shanghai, China
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/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
utslib.copyright.status	open_access
pubs.consider-herdc	true	en_US
pubs.place-of-publication	Denmark	en_US
pubs.start-date	2010-09-21	en_US

Abstract:

In recent years, worldwide research and development in the cement industry has gathered momentum with an aim to explore innovative and sustainable methods to deliver environmentally responsible Portland Cement (PC) based construction products. This study investigated physical and mechanical properties of autoclaved cement-quartz sand blends with the addition of clay-brick waste (CB waste) and reactive magnesia (MgO) with the aim to lower CO2 emissions through the reduction of PC consumption. Mechanical properties and drying shrinkage showed improvements with the incorporation of CB waste due to increased amounts and crystallinity of Al-tobermorite. The addition of reactive MgO to PC in hydrothermal conditions was observed to have a negative effect on the compressive strength. XRD data indicated that MgO did not take part in the reaction during the hydration of the cement and may even retard tobermorite formation. However, the expansive nature from the hydration of MgO to brucite may have compensated for drying shrinkage.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/16417