Abstract
The paper at hand quantifies the influence of aggregate volume fraction on pumping behaviour of concretes with distinct flow behaviours, i.e. plug or shear flow type. For this purpose, conventionally vibrated concretes (CVC), and self-compacting concretes (SCC) containing different volume fraction of aggregates are designed, and their rheological properties are investigated. The results indicate that the concrete pumpability, in terms of delivery rate for a given pressure, decreases by at least 30% for 10% increase in aggregates content by volume. The relative decrease in pumpability is more pronounced for CVC. Furthermore, it is shown that under certain experimental conditions the rheological properties of the lubricating layer (LL) can be approximated to those of the constitutive mortar in pumped concrete. Accordingly, the measurements on constitutive mortar can be used as a basis for the analytical prediction of pumping pressure. The obtained knowledge is a prerequisite for evaluating flow-induced particle migration (FIPM) during pumping and LL formation.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Kaplan D, De Larrard F, Sedran T (2005) Design of concrete pumping circuit. ACI Mater J 102:110–117
Feys D, De Schutter G, Verhoeven R (2012) Parameters influencing pressure during pumping of self-compacting concrete. Mater Struct 46:533–555
Choi M, Roussel N, Kim Y, Kim J (2013) Lubrication layer properties during concrete pumping. Cem Concr Res 45:69–78
Le HD, Kadri E, Aggoun S, Vierendeels J, Troch P, De Schutter G (2015) Effect of lubrication layer on velocity profile of concrete in a pumping pipe. Mater Struct 48:3991–4003
Spangenberg J, Roussel N, Hattel JH, Stang H, Skocek J, Geiker MR (2012) Flow induced particle migration in fresh concrete: theoretical frame, numerical simulations and experimental results on model fluids. Cem Concr Res 42:633–641
Feys D, Khayat KH, Perez-schell A, Khatib R (2014) Development of a tribometer to characterize lubrication layer properties of self- consolidating concrete. Cem Concr Compos 54:40–52
Phillips RJ, Armstrong RC, Brown RA, Graham AL, Abbott JR (1992) A constitutive equation for concentrated suspensions that accounts for shear- induced particle migration. Phys Fluids A Fluid Dyn 4:30–40
Jo SD, Park CK, Jeong JH, Lee SH, Kwon SH (2012) A computational approach to estimating a lubricating layer in concrete pumping. Comput Mater Contin 27:189–210
Secrieru E, Fataei S, Schröfl C, Mechtcherine V (2017) Study on concrete pumpability combining different laboratory tools and linkage to rheology. Constr Build Mater 144:451–461
Kwon SH, Jang KP, Kim JH, Shah SP (2016) State of the art on prediction of concrete pumping. Int J Concr Struct Mater 10:75–85
Guazzelli É, Pouliquen O (2018) Rheology of dense granular suspensions. J Fluid Mech 852:P11–P173
Heirman G, Hendrickx R, Vandewalle L, Van Gemert D, Feys D, De Schutter G, Desmet B, Vantomme J (2009) Integration approach of the Couette inverse problem of powder type self-compacting concrete in a wide-gap concentric cylinder rheometer. Cem Concr Res 39:171–181
Secrieru E (2018) Pumping behaviour of modern concretes – Characterisation and prediction. PhD thesis, TU Dresden
Mechtcherine V, Secrieru E, Schröfl C (2015) Effect of superabsorbent polymers (SAPs) on rheological properties of fresh cement-based mortars—development of yield stress and plastic viscosity over time. Cem Concr Res 67:52–65
Kasten K (2010) Gleitrohr – Rheometer, Ein Verfahren zur Bestimmung der Fließeigenschaften von Dickstoffen in Rohrleitungen, TU Dresden
Kwon SH, Park CK, Jeong JH, Jo SD, Lee SH (2013) Prediction of concrete pumping: part II—analytical prediction and experimental verification. ACI Mater J 110:657–668
Browne RD, Bamforth PB (1977) Tests to establish concrete pumpability. ACI J Proc 74:93–203
Choi MS, Kim YJ, Jang KP, Kwon SH (2014) Effect of the coarse aggregate size on pipe flow of pumped concrete. Constr Build Mater 66:723–730
Acknowledgement
This paper is a part of the first author’s PhD dissertation. The research is funded by German Research Foundation (DFG) within the priority program SPP 2005: Opus Fluidum Futurum – Rheology of reactive, multiscale, multiphase construction materials. The authors gratefully acknowledge the supply of binder by HeidelbergCement AG and admixtures by BASF Construction Solutions GmbH.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2020 RILEM
About this paper
Cite this paper
Fataei, S., Secrieru, E., Mechtcherine, V. (2020). Influence of Aggregate Volume Fraction on Concrete Pumping Behaviour. In: Mechtcherine, V., Khayat, K., Secrieru, E. (eds) Rheology and Processing of Construction Materials. RheoCon SCC 2019 2019. RILEM Bookseries, vol 23. Springer, Cham. https://doi.org/10.1007/978-3-030-22566-7_35
Download citation
DOI: https://doi.org/10.1007/978-3-030-22566-7_35
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-22565-0
Online ISBN: 978-3-030-22566-7
eBook Packages: EngineeringEngineering (R0)