Title: Semi-flowable self-consolidating concrete and its application

Authors: Gilson R. Lomboy; Kejin Wang

Addresses: Department of Civil, Construction and Environmental Engineering, Iowa State University, Ames IA, 5001, USA ' Department of Civil, Construction and Environmental Engineering, Iowa State University, Ames IA, 5001, USA

Abstract: Semi-flowable self-consolidating concrete (SFSCC) was developed to address the issue of shape stability while possessing self-consolidation properties in pavement concrete. In an unrodded flow test using a standard slump cone, SFSCC has a flow diameter of 27.9-33.0 cm, slump of 15.2-20.3 cm and symmetric cone shape. The green strength of a freestanding fresh concrete cylinder in compression ranges from 1.3-2.5 kPa and the compaction factor should be ≥ 0.98. Applications to slip-form paving and sloping pavements are discussed based on two field constructions. The first is a bike path and the second is a street pavement. Both pavements were constructed without mechanical vibrators and were finished and cured in the same method as conventional concrete pavements.

Keywords: semi-flowable concrete; self-consolidating concrete; SFSCC; slip-form paving; shape-holding ability; shape stability; pavement concrete; flow diameter; slump; green strength; compaction factor; sloping pavements; bicycle paths; cycle paths; bike paths; street pavements; concrete curing.

DOI: 10.1504/IJMSI.2015.071110

International Journal of Materials and Structural Integrity, 2015 Vol.9 No.1/2/3, pp.61 - 71

Published online: 12 Aug 2015 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article