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Pro084-1

EFFECTS OF NANOSIO2 AND NANOCA(OH)2 ON THE PROPERTIES OF HVFA CEMENTITIOUS MATERIALS



Author(s): Pengkun Hou, Xin Cheng, Jueshi Qian and Surendra P. Shah
Paper category: Proceedings
Book title: Proceedings of CONSEC13 Seventh International Conference on Concrete under Severe Conditions - Environment and Loading Volume I
Editor(s): Z.J. Li, W. Sun, C.W. Miao, K.Sakai, O.E. Gjørv, N.Banthia
ISBN: 978-2-35158-124-7
e-ISBN: 978-2-35158-134-6
Publisher: RILEM Publications SARL
Publication year: 2013
Pages: 310-319
Total Pages: 961
Language : English


Abstract: NanoSiO2 and nanoCa(OH)2 were introduced into high-volume fly ash (HVFA) cement- based materials. Results revealed that both nanoparticles were capable of enhancing the early age hydration process of cement, and thus increased the early age strength of the cementitious materials. However, due to the high pozzolanic reaction of nanoSiO2 with calcium hydroxide, produced from cement hydration, and the characteristics of its hydration products, the hydration process of both cement and fly ash was hindered by nanoSiO2 at later age. NanoCa(OH)2 was found to be effective of enhancing both the early and later age properties of HVFA cement-based materials.


Online publication : 2013
Publication type : full_text
Public price (Euros) : 0.00


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