Effects of Water-Binder Ratio and Coarse Aggregate Content on Interior Humidity, Autogenous Shrinkage, and Drying Shrinkage of Concrete
Publication: Journal of Materials in Civil Engineering
Volume 26, Issue 1
Abstract
Experimental studies on shrinkage and interior humidity of three series of concrete with three aggregate contents in each concrete under sealing and drying conditions were carried out. The results show that the development of interior humidity of concrete is influenced strongly by the water-binder ratio and curing status of the specimen. In dry conditions, a fast reduction of the interior humidity is accompanied with a fast increase of shrinkage strain of the unsealed specimen compared with that of the sealed specimen. The effect of coarse aggregate on the interior humidity is insignificant. The difference in interior humidity between exposed and sealed specimens decreases with the reduction of the water-binder ratio. For a given age, the autogenous and drying shrinkages decrease with the increase of coarse aggregate content. The addition of coarse aggregate has a more significant influence on drying shrinkage than autogenous shrinkage.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
This work has been supported by a grant from the National Science Foundation of China (number 50978143; 51178248) and a grant from the national basic research program of China (number 2009CB623200) to Tsinghua University.
References
Amziane, S. (2006). “Setting time determination of cementitious materials based on measurements of the hydraulic pressure variations.” Cement Concr. Res., 36(2), 295–304.
Bentur, A., Igarashi, S., and Kovler, K. (2001). “Prevention of autogenous shrinkage in high-strength concrete by internal curing using wet lightweight aggregates.” Cement Concr. Res., 31(11), 1587–1591.
Chanvillard, G., and Daloia, L. (1997). “Concrete strength estimation at early age: Modification of the method of equivalent age.” ACI Mater. J., 94(6), 220–227.
Kamen, A., Denarie, E., Sadouki, H., and Bruhwiler, E. (2008). “Thermo-mechanical response of UHPFRC at early age—experimental study and numerical simulation.” Cement Concr. Res., 38(6), 822–831.
Pane, I., and Hansen, W. (2002). “Concrete hydration and mechanical properties under nonisothermal conditions.” ACI Mater. J., 99(6), 534–542.
Sule, M., and van Breugel, V. K. (2001). “Cracking behavior of reinforced concrete subjected to early-age shrinkage.” Mater. Struct., 34(5), 284–292.
Zhang, J., Hou, D., and Han, Y. (2012). “Micromechanical modeling on autogenous and drying shrinkages of concrete.” Constr. Build. Mater., 29(3), 230–240.
Zhang, J., Hou, D. W., and Sun, W. (2010). “Experimental study on the relationship between shrinkage and interior humidity of concrete at early age.” Mag. Concr. Res., 62(3), 191–199.
Zhang, J., Qi, K., and Huang, Y. (2009). “Calculation of moisture distribution in early age concrete.” J. Eng. Mech., 871–880.
Zhang, T. (2005). “Studies on cracking sensitivity of concrete at early ages.” Ph.D. thesis, Tsinghua Univ., Beijing.
Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 26 • Issue 1 • January 2014
Pages: 184 - 189
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Feb 6, 2012
Accepted: Feb 11, 2013
Published online: Feb 13, 2013
Discussion open until: Jul 13, 2013
Published in print: Jan 1, 2014
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.