Influence of the storage conditions on the dimensional changes of heat-cured mortars
作者： C Famy , K.L Scrivener , A Atkinson , A.R Brough
DOI: 10.1016/S0008-8846(01)00480-X
关键词: Moisture 、 Mineralogy 、 Chemical engineering 、 Electron microprobe 、 Chemistry 、 Scanning electron microscope 、 Ettringite 、 Concentration effect 、 Relative humidity 、 Cementitious 、 Leaching (metallurgy)
摘要: Some cementitious materials cured at elevated temperature may expand on subsequent exposure to moisture. Concern has been expressed as the relevance of small laboratory specimens field concretes, in particular due potential leaching ions into storage solution. The work presented here aims investigating this effect. Mortars identical fashion were subsequently stored 90-100% relative humidity (RH) and water, a LiOH solution, KOH solutions various concentrations. largest most rapid expansion occurred with mortars immersed water. samples RH expanded more slowly. Expansion was even slower when or solutions. same studied by scanning electron microscopy (SEM) X-ray diffraction (XRD). These techniques indicated that ettringite had formed over time all samples, little apparent relation degree expansion. composition C-S-H gel changed time, differently for different conditions. © 2001 Elsevier Science Ltd.
elsevier.com
sci-hub.se 参考文章(21)
J Stark, K Bollmann, K Seyfarth, Ettringit - Schadensverursacher, Schadensverstaerker oder unbeteiligter Dritter? ZEMENT - KALK - GIPS ZKG INTERNATIONAL. ,vol. 51, ,(1998)
Stella L. Marusin, William G. Hime, Zvonimir T. Jugovic, Richard C. Mielenz, INVESTIGATION OF PRESTRESSED CONCRETE RAILWAY TIE DISTRESS Concrete international. ,vol. 17, pp. 62- 68 ,(1995)
Jaromir Jambor, Jan Skalny, Otra perspectiva sobre el deterioro del hormigón de cemento aluminoso Materiales De Construccion. ,vol. 46, pp. 5- 21 ,(1996) , 10.3989/MC.1996.V46.I241.537
Zhaozhou Zhang, Delayed ettringite formation in heat cured cementitious systems ,(1999)
ETTRINGITE IN HYDRATION OF PORTLAND CEMENT CONCRETE AND ITS OCCURRENCE IN MATURE CONCRETES Aci Materials Journal. ,vol. 98, pp. 350- 356 ,(2001) , 10.14359/10404
K.L. Scrivener, The effect of heat treatment of inner product CSH Cement and Concrete Research. ,vol. 22, pp. 1224- 1226 ,(1992) , 10.1016/0008-8846(92)90051-V
Renhe Yang, Christopher D Lawrence, Cyril J Lynsdale, John H Sharp, Delayed ettringite formation in heat-cured Portland cement mortars Cement and Concrete Research. ,vol. 29, pp. 17- 25 ,(1999) , 10.1016/S0008-8846(98)00168-9
M.C. Lewis, Karen L. Scrivener, S. Kelham, Heat curing and delayed ettringite formation MRS Proceedings. ,vol. 370, pp. 67- 76 ,(1994) , 10.1557/PROC-370-67
K. Pettifer, P.J. Nixon, Alkali metal sulphate — a factor common to both alkali aggregate reaction and sulphate attack on concrete Cement and Concrete Research. ,vol. 10, pp. 173- 181 ,(1980) , 10.1016/0008-8846(80)90074-5
J. Skalny, Ettringite — the sometimes host of destruction Cement and Concrete Research. ,vol. 30, pp. 505- ,(2000) , 10.1016/S0008-8846(99)00258-6