Effect of saccharides on the hydration of ordinary Portland cement

•The influence of saccharides on OPC was investigated.•HPAEC and GC were used to characterised monomeric sugars and uronic acids.•The influence of the fibre leachates on ordinary Portland cement was characterised.•The pH of the leachates was correlated with the GAA and GLA acid concentration. Recent...

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Bibliographic Details
Published in:Construction & building materials 2017-09, Vol.150, p.268-275
Main Authors: Kochova, K., Schollbach, K., Gauvin, F., Brouwers, H.J.H.
Format: Article
Language:English
Subjects:
Analysis
Cellulose
Cements (Building materials)
Chemical composition
Chemical properties
Fibers
Hydration
Natural fibres
Retarding effect
Sugars
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Summary:•The influence of saccharides on OPC was investigated.•HPAEC and GC were used to characterised monomeric sugars and uronic acids.•The influence of the fibre leachates on ordinary Portland cement was characterised.•The pH of the leachates was correlated with the GAA and GLA acid concentration. Recently, the use of natural fibres as a sustainable alternative for reinforcements in cement-based materials has increased significantly. However, these lignocellulose fibres containing saccharides can have important retarding effects on cement hydration. The objective of this study is to characterise the effect of different organic compounds present in lignocellulose fibres on the cement hydration reactions. For a better understanding of this process, sugars such as fructose, glucose and sucrose, lignin and cellulose have been added to a cement paste as well as leachates of fibres. Experimental results show that glucose, mannose and xylose in fibre leachates had a significant impact on the cement hydration, slowing down the hydration for up to 2days.
ISSN:0950-0618
1879-0526
DOI:10.1016/j.conbuildmat.2017.05.149