Title:
Field Measurements of SCC Lateral Pressure—Toronto 2014
Author(s):
Gardner, N.J.; Keller, L.; Khayat, K.H.; Lange, D.A.; and Ahmed R. Omran
Publication:
Concrete International
Volume:
38
Issue:
6
Appears on pages(s):
42-50
Keywords:
thixotropy, reinforcement, vibration, hydrostatic
DOI:
10.14359/51689048
Date:
6/1/2016
Abstract:
A large-scale experimental investigation to measure the form pressures exerted by self-consolidating concrete (SCC) was performed in Toronto, ON, Canada. The experimental program is described and measured lateral pressures are compared with values calculated using various predictive approaches available in the published literature. A key recommendation: Unless the stiffening characteristics of the SCC mixture are prequalified and verified by field measurements, formwork should be designed to resist full hydrostatic pressure.
Related References:
1. Billberg, P.H.; Roussel, N.; Amziane, S.; Beitzel, M.; Charitou, G.; Freund, B.; Gardner, N.J.; Grampeix, G.; Graubner, C.-A.; Keller, L.; Khayat, K.H.; Lange, D.A.; Omran, A.F.; Perrot, A.; Proske, T.; Quattrociocchi, R.; and Vanhove, Y., “Field Validation of Models for Predicting Lateral Form Pressure Exerted by SCC Concrete,” Cement & Concrete Composites, V. 54, Nov. 2014, pp. 70-79.
2. Omran, A.F.; Naji, S.; and Khayat, K.H., “Portable Vane Test to Assess Structural Buildup at Rest of Self-Consolidating Concrete,” ACI Materials Journal, V. 108, No. 6, Nov.-Dec. 2011, pp. 628-637.
3. Khayat, K.H.; Omran, A.F.; and Pavate, T.V., “Inclined Plane Test Method to Determine Structural Buildup at Rest of Self-Consolidating Concrete,” ACI Materials Journal, V. 107, No. 5, Sept.-Oct. 2010, pp. 515-522.
4. Lange, D.A.; Birch, B.; Henchen, J.; Liu, Y.-S.; Tejeda-Dominguez, F.; and Struble, L., “Modelling Formwork Pressure of SCC,” 3rd North American Conference on the Design and Use of Self-Consolidating Concrete (SCC 2008): Challenges and Barriers to Application, S.P. Shah, ed., 2008, pp. 295-300.
5. Gardner, N.J.; Keller, L.; Quattrociocchi, R.; and Charitou, G., “Field Investigation of Formwork Pressures Using Self-Consolidating Concrete,” Concrete International, V. 34, No. 1, Jan. 2012, pp. 41-47.
6. Gardner, N.J., “Pressure of Self-Consolidating Concrete on Formwork,” Concrete International, V. 36, No. 7, July 2014, pp. 53-58.
7. Khayat, K.H., and Omran, A.F., “State-of-the-Art Review of Form Pressure Exerted by Self-Consolidating Concrete,” Final Report, Ready Mixed Concrete (RMC) Research and Education Foundation, American Concrete Institute (ACI), and Strategic Development Council (SDC), Dec. 2009, 549 pp., www.concretesdc.org/projects/SCCreport.htm.