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Full Record Details
Persistent URL
http://purl.org/net/epubs/work/66589
Record Status
Checked
Record Id
66589
Title
Nano-scale hydrogen-bond network improves the durability of greener cements
Contributors
J Jacobsen
,
M Santos Rodrigues
,
MTF Telling (STFC Rutherford Appleton Lab.)
,
S Beraldo
,
S Francisco Santos
,
L Aldridge
,
H Bordallo
Abstract
More than ever before, the world's increasing need for new infrastructure demands the construction of efficient, sustainable and durable buildings, requiring minimal climate-changing gas-generation in their production. Maintenance-free "greener" building materials made from blended cements have advantages over ordinary Portland cements, as they are cheaper, generate less carbon dioxide and are more durable. The key for the improved performance of blends (which substitute fine amorphous silicates for cement) is related to their resistance to water penetration. The mechanism of this water resistance is of great environmental and economical impact but is not yet understood due to the complexity of the cement's hydration reactions. Using neutron spectroscopy, we studied a blend where cement was replaced by ash from sugar cane residuals originating from agricultural waste. Our findings demonstrate that the development of a distinctive hydrogen bond network at the nano-scale is the key to the performance of these greener materials.
Organisation
ISIS
,
ISIS-IRIS
,
STFC
Keywords
ISIS 2013
Funding Information
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Licence Information:
Language
English (EN)
Type
Details
URI(s)
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Year
Journal Article
Nature Scientific Reports 3 (2013): 2667.
doi:10.1038/srep02667
2013
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