Inorganic Building Materials Group

Instrumentation

---

Parallel plate Rheometer:

It is used to measure the rheological properties of cement paste and mortar. These measurements are used to predict the rheological behavior of concrete and to determine incompatibility between cements and admixtures. Local Contact: Chiara Ferraris, clarissa.ferraris@nist.gov

Temperature and speed controlled mixer.

Cement paste and mortar are mixed with the same shear as encountered in concrete. It is used to prepare the specimens to be tested in the rheometer. Local Contact: Chiara Ferraris, clarissa.ferraris@nist.gov

Impedance spectroscopy measurements

Used to determine the diffusion coefficient of concrete. Local Contact: Kenneth Snyder, kenneth.snyder@nist.gov

X-Ray adsorption system

Utilized to measure spatial and temporal variations in the density of building materials, with a spatial resolution of 0.1 mm. For example, the unit has been used successfully to study the drying/curing of cement pastes and mortars, including the influences of organic shrinkage-reducing admixtures. Local Contact: Dale Bentz, dale.bentz@nist.gov

 

Privacy Policy/Security Notice/Accessability  |  Disclaimer  |  FOIA NIST is an agency of the U.S. Department of Commerce