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Virtual Testing of Cement and Concrete-USA 2004.


pdf icon Virtual Testing of Cement and Concrete-USA 2004. (211 K)
Garboczi, E. J.; Bullard, J. W.; Bentz, D. P.

Concrete International, Vol. 26, No. 12, 33-37, December 2004.

Keywords:

cements; concretes; color; virtual testing

Abstract:

A unique, multi-phase, random, complex, and composite material, concrete provides both strength and impermeability to engineered structures. Unlike most construction materials, the properties of concrete continue to develop over time and in place -- assisting processing and fabrication. Testing and quality assurance, however, become more complicated. For instance, having to wait 28 days to ensure performance compliance is a unique, but not necessarily an attractive, feature of concrete. Computer models today attempt to reduce the length of this waiting period through the prediction of cement and concrete properties by means of virtual testing. Based upon a detailed characterization of starting materials, such models predict a variety of properties of both fresh and hardening concrete. Successful prediction of properties with virtual testing will result in tremendous time and cost savings to the cement and concrete industry, and will play an important role in enabling the use of performance specifications. Virtual testing will also support the capability to rapidly perform a large number of "what-if" type computations to explore and optimize new material systems.