Using rutile nano-TiO2 to modify the microstructure of alkali activated slag

Author(s): L. Y. Yang, Z. J. Jia, Y. Y. Yang and Y. M. Zhang
Paper category: Proceedings
Book title: Proceedings of the Seventh International Conference on Concrete under Severe Conditions – Environment and Loading
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: 995-1004
Total Pages: 10
Language : English

Abstract: There are some drawbacks existing in alkali-activated slag (AAS), such as high drying shrinkage and carbonation. These drawbacks are closely connected with the microstructure of AAS. In this paper, a study has been conducted to investigate the effects of nano material on the microstructure of alkali-activated slag paste(AASP). The investigation showed that the early hydration products of AAS became denser by adding 0.5% (in weight) rutile nano-TiO2 while the types of hydration products had little change. And the Ca/Si and Ca/Al ratios of AASP with rutile nano-TiO2 decreased comparing to the reference AASP at the same age. 0.5% rutile nano-TiO2 has effects on the microstructure of AAS.

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