Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Testing of Cementitious Materials Using a Dynamic MEMS Micro Rheometer

Published

Author(s)

Yong Sik Kim, Nicholas G. Dagalakis, Chiara C. Ferraris, Nicos Martys

Abstract

Incompatibility of cementitious materials with admixtures often requires time consuming testing. Usually, several mixtures need to be prepared either using concrete or paste to determine the optimum high range water reducer dosage (HRWRA) and type. The number of tests increases if the dosages of supplementary cementitious materials (SCMs) are also optimized. To help reduce testing time and amount of materials used, a high through-put micro rheometer is being designed that is based on an oscillatory parallel plate type rheometer. This novel device is a planar single-Degree of Freedom (DOF) motion stage based on Micro Electro Mechanical Systems (MEMS) fabrication methods. To meet the requirements for application to cement based materials, a single-DOF motion stage is driven by an electro-thermal actuator that is designed to provide a shear stress of up to 60 Pa. The device is small and inexpensive to manufacture and several of them can be used in parallel to test several mixtures of paste at the same time. A vision sensor recognizes a set of predetermined patterns embedded on the motion stages for monitoring their motions. Data were, obtained on a prototype, by measuring the rheological properties of Bentonite.
Proceedings Title
Proceedings of the 8th International RILEM Symposium in Self-Compacting Concrete- PRO100, ed.
Conference Dates
May 15-18, 2016
Conference Location
Washington, DC, US

Keywords

rheology, cement paste, MEMS, motion stage

Citation

Kim, Y. , Dagalakis, N. , Ferraris, C. and Martys, N. (2016), Testing of Cementitious Materials Using a Dynamic MEMS Micro Rheometer, Proceedings of the 8th International RILEM Symposium in Self-Compacting Concrete- PRO100, ed., Washington, DC, US, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=919900 (Accessed August 12, 2022)
Created May 17, 2016, Updated April 4, 2022