• The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

International Concrete Abstracts Portal


Title: Design of Concrete Pumping Circuit

Author(s): Denis Kaplan, Francois de Larrard, and Thierry Sedran

Publication: Materials Journal

Volume: 102

Issue: 2

Appears on pages(s): 110-117

Keywords: cylinder; pumping; test

DOI: 10.14359/14304

Date: 3/1/2005

Pumping is a common process to transport fresh concrete. To date, however, there is no rigorous, scientifically based method to design a pumping circuit that is to predict the relationship between pressure and flow rate as a function of circuit dimensions and fresh concrete behavior. Such a method was developed and is presented in this paper. A 150 m-long experimental pumping circuit was mounted that permitted a number of full-scale pumping tests to be carried out. In addition, the fresh concrete rheological and steel-concrete interface behaviors were measured in the laboratory with a rheometer equipped with accessories. Finally, an analytical model using the Bingham constants (yield stress and plastic viscosity) and the interface constants could be validated. A further validation was acquired on two real job sites. A complete set of tools (guide, laboratory devices, and software) is now available to apply this method in practice.