Strength and drying shrinkage of reactive MgO modified alkali-activated slag paste
作者： Fei Jin , Kai Gu , Abir Al-Tabbaa
DOI: 10.1016/J.CONBUILDMAT.2013.10.081
关键词: Curing (chemistry) 、 Microstructure 、 Scanning electron microscope 、 Sodium hydroxide 、 Reactive magnesia 、 Mineralogy 、 Shrinkage 、 Cement 、 Chemical engineering 、 Thermogravimetric analysis 、 Materials science
摘要: Conventional alkali-activated slag (AAS) cements suffer from significant drying shrinkage which hinders their widespread application. This paper investigates the potential of using commercial reactive MgO to reduce the drying shrinkage of AAS. Two different reactive MgOs were added at a content of 2.5–7.5 wt% of the slag, which was activated by sodium hydroxide and water–glass. The strength and the drying shrinkage of those reactive MgO modified AAS (MAAS) pastes were measured up to 90 days. It is found that MgO with high …
core.ac.uk
sci-hub.se 参考文章(60)
Pavel Krivenko, Caijun Shi, Della Roy, Alkali-Activated Cements and Concretes ,(2003)
J Deja, R Andersson, H-E Gram, J Malolepszy, ALKALI-ACTIVATED SLAG CBI Research. ,(1988)
Mark A. Shand, The Chemistry and Technology of Magnesia ,(2006)
J. Dweck, P. F. Ferreira da Silva, P. M. Büchler, F. K. Cartledge, Study by thermogravimetry of the evolution of ettringite phase during type II Portland cement hydration Journal of Thermal Analysis and Calorimetry. ,vol. 69, pp. 179- 186 ,(2002) , 10.1023/A:1019950126184
T. Shimomura, K. Maekawa, Analysis of the drying shrinkage behaviour of concrete using a micromechanical model based on the micropore structure of concrete Magazine of Concrete Research. ,vol. 49, pp. 303- 322 ,(1997) , 10.1680/MACR.1997.49.181.303
Antonio A Melo Neto, Maria Alba Cincotto, Wellington Repette, None, Drying and autogenous shrinkage of pastes and mortars with activated slag cement Cement and Concrete Research. ,vol. 38, pp. 565- 574 ,(2008) , 10.1016/J.CEMCONRES.2007.11.002
Karen L. Scrivener, R. James Kirkpatrick, Innovation in use and research on cementitious material Cement and Concrete Research. ,vol. 38, pp. 128- 136 ,(2008) , 10.1016/J.CEMCONRES.2007.09.025
B. Lothenbach, A. Gruskovnjak, Hydration of alkali-activated slag: thermodynamic modelling Advances in Cement Research. ,vol. 19, pp. 81- 92 ,(2007) , 10.1680/ADCR.2007.19.2.81
Cengiz Duran Atiş, Cahit Bilim, Özlem Çelik, Okan Karahan, Influence of Activator on the Strength and Drying Shrinkage of Alkali-Activated Slag Mortar Construction and Building Materials. ,vol. 23, pp. 548- 555 ,(2009) , 10.1016/J.CONBUILDMAT.2007.10.011
Frank Collins, J.G Sanjayan, Microcracking and strength development of alkali activated slag concrete Cement & Concrete Composites. ,vol. 23, pp. 345- 352 ,(2001) , 10.1016/S0958-9465(01)00003-8