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Pro061

Effect of superplasticizer on early age hydration of cement



Title: Effect of superplasticizer on early age hydration of cement
Author(s): Y.Q. Jiang, M.Z. Gong
Paper category : conference
Book title: International Conference on Microstructure Related Durability of Cementitious Composites
Editor(s): W. Sun, K. van Breugel, C. Miao, G. Ye and H. Chen
Print-ISBN: 978-2-35158-065-3
e-ISBN: 978-2-35158-084-4
Publisher: RILEM Publications
Publication year: 2008
Pages: 153 - 160
Total Pages: 8
Nb references: 10
Language: English


Abstract: Microstructures of early age hydration products of cement superplasticized with three typical types of polycarboxylate ether type superplasticizer (PCE) were investigated and the numerical eigenvalues of cement hydration products were analyzed. According to experimental and analytical results, PCEs can accelerate hydration rate of cement minerals.
Typically, acrylic acid type polycarboxylate based superplasticizers increase formation rate of ettringite, and maleic anhydride type polycarboxylate based superplasticizer speeds up the formation rate of monosulfoaluminate. Therefore, earlier hydration of cement and engineering properties of concrete are dominated by the type of PCE. Suitable choice should be made according to application requirements of concrete engineering, and modification should be done by blending retarders, air entraining agents or defoaming agents if needed.


Online publication: 2009-06-09
Publication type : full_text
Public price (Euros): 0.00