Abstract
Accurate characterisation of static yield stress evolution with time enables correct evaluation of the structural build-up rate for cement-based materials. This parameter is fundamentally important for many construction processes, including conventional in-situ concrete construction, various digital fabrication techniques, well cementing, etc. The paper at hand presents a parameter study on determination of structural build-up by means of constant shear rate test. It is shown, how the choice of single or multiple samples as well as different constant shear rates and pre-shear regimes influences the apparent time-dependent static yield stress evolution of cementitious materials and, hence, the accuracy of structural build-up rate evaluation. Respective recommendations for decreasing error in measurements of static yield stress are provided.
Keywords
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsReferences
Roussel N, Ovarlez G, Garrault S, Brumaud C (2012) The origins of thixotropy of fresh cement pastes. Cem Concr Res 42(1):148–157
Mahaut F, Mokéddem S, Chateau X, Roussel N, Ovarlez G (2008) Effect of coarse particle volume fraction on the yield stress and thixotropy of cementitious materials. Cem Concr Res 38:1276–1285
Yuan Q, Zhou D, Li B, Huang H, Shi C (2018) Effect of mineral admixtures on the structural build-up of cement paste. Constr Build Mater 160:117–126
Khayat KH, Omran AF, Naji S, Billberg P, Yahia A (2012) Field-oriented test methods to evaluate structural build-up at rest of flowable mortar and concrete. Mater Struct 45:1547–1564
Nerella VN, Beigh MAB, Fataei S, Mechtcherine V (2019) Strain-based approach for measuring structural build-up of cement pastes in the context of digital construction. Cem Concr Res 115:530–544
Perrot A, Rangeard D (2015) Pierre A (2015) Structural built-up of cement-based materials used for 3D- printing extrusion techniques. Mater Struct 49:1213–1220
Roussel N (2006) A thixotropy model for fresh fluid concretes: theory, validation and applications. Cem Concr Res 36(10):1797–1806
Omran AF, Khayat KH, Elaguab YM (2012) Effect of SCC mixture composition on thixotropy and formwork pressure. J Mater Civ Eng 24(7):876–888
Acknowledgements
This work is a part of I. Ivanova’s PhD research. The project 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 also express sincere gratitude to HeidelbergCement AG for providing Portland cement used in this study.
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
Ivanova, I., Mechtcherine, V. (2020). Evaluation of Structural Build-Up Rate of Cementitious Materials by Means of Constant Shear Rate Test: Parameter Study. 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_25
Download citation
DOI: https://doi.org/10.1007/978-3-030-22566-7_25
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-22565-0
Online ISBN: 978-3-030-22566-7
eBook Packages: EngineeringEngineering (R0)