Rheo-IR: A combined setup for correlating chemical changes via FTIR spectroscopy and rheological properties in a strain-controlled rheometer

Autor: Roxana Figuli, Christian Fengler, Manfred Wilhelm, Christopher O. Klein, Nonkululeko W. Radebe

Publikováno v: Journal of Rheology. 65:681-693

Fourier-transform infrared (FTIR) spectroscopy is a common tool for determining, both qualitatively and quantitatively, the chemical composition of a material in the solid, liquid, or gas phase. It is additionally used as a technique to monitor the r

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1c903f8e549b96e9fc98ba0c66da1e56
https://doi.org/10.1122/8.0000251

Interlaboratory study on rheological properties of cement pastes and reference substances: comparability of measurements performed with different rheometers and measurement geometries

Autor: Joachim Jürgen Riedmiller, Mareike Thiedeitz, Shirin Fataei, Hans-W. Krauss, Tabea von Bronk, Manfred Wilhelm, Inga Hauschildt, Steffen Jesinghausen, Irina Ivanova, Viktor Mechtcherine, Sebastian Pawelczyk, Dietmar Stephan, Christian Baumert, O. Mazanec, Christoph Gehlen, Christopher O. Klein, Sarah Leinitz, Egor Secrieru, Dario Cotardo, Ludger Lohaus, Michael Haist, Nonkululeko W. Radebe, Hans-Joachim Schmid, Dirk Lowke, Ursula Pott, Wolfram Schmidt, Mahmoud Eslami Pirharati, Julian Link, David Nicia, Harald Garrecht

Publikováno v: Materials and structures, 53 (4), Art. Nr.: 92
Materials and Structures 53 (2020), Nr. 4

This paper presents the results of an interlaboratory study of the rheological properties of cement paste and ultrasound gel as reference substance. The goal was to quantify the comparability and reproducibility of measurements of the Bingham paramet

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f129a44be6ef73192d3e332027ada183
https://doi.org/10.1617/s11527-020-01477-w

Effect of Different Molecular Weights and Chemical Composition of Superplasticizers on the Structural Build-up of Cement Paste Using Dynamic Oscillatory Rheology

Autor: Christopher O. Klein, Lei Lei, Manfred Wilhelm, Nonkululeko W. Radebe

Publikováno v: 3rd International Conference on the Application of Superabsorbent Polymers (SAP) and Other New Admixtures Towards Smart Concrete ISBN: 9783030333416

Two polycarboxylate ether (PCE) superplasticizers with different molar masses and functionalities were studied in relation to their strain and time-dependant rheological properties. The effect of dosage on cement paste fluidity and structural-build u

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f80b5e8a581f779e93c49ab3a0d27631
https://doi.org/10.1007/978-3-030-33342-3_21

Gradient-induced mechanical vibration of neural interfaces during MRI

Autor: Erwin Fuhrer, Mazin Jouda, Manfred Wilhelm, Jan G. Korvink, Christopher O. Klein

Publikováno v: IEEE Transactions on Biomedical Engineering
IEEE transactions on biomedical engineering, 67 (3), 915-923

Objective: Resonant vibrations of implanted structures during a magnetic resonance imaging (MRI) procedure pose a risk to the patient in the form of soft tissue irritation and degradation of the implant. In this paper, the mechanical behavior of impl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9ff933ff435689b776adff5581a71802

A review of nonlinear oscillatory shear tests: Analysis and application of large amplitude oscillatory shear (LAOS)

Autor: Jung Gun Nam, Kyu Hyun, Gareth H. McKinley, Manfred Wilhelm, Seung Jong Lee, Randy H. Ewoldt, Christopher O. Klein, Kwang Soo Cho, Kyung Hyun Ahn

Publikováno v: MIT Web Domain

Dynamic oscillatory shear tests are common in rheology and have been used to investigate a wide range of soft matter and complex fluids including polymer melts and solutions, block copolymers, biological macromolecules, polyelectrolytes, surfactants,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a053cc0716863f472988e386b1577e8e
https://doi.org/10.1016/j.progpolymsci.2011.02.002