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Better Cement and Mortar

Snapshot from a simulation of the mortar SRM in a double-helix rheometer. The white plane shows the initial location of the top of the suspension before starting the rheometer.
Snapshot from a simulation of the mortar SRM in a double-helix rheometer.
Credit: NIST

Concrete is one of the most commonly used materials in the world, yet amazingly, is not completely understood. 

NIST provides concrete standard reference materials that the industry uses to calibrate devices that measure how concrete flows, called rheometers. 

To create these materials, NIST researchers carried out measurements and computer simulations, a novel approach for a standard reference material, using unique in-house computational resources and expertise. The resulting standard reference materials help industry improve the quality of cement and mortar products and ultimately help provide more predictable behavior of cement materials for construction and residential use.

Created March 17, 2025, Updated March 20, 2025