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Virtual Cement and Concrete Testing Laboratory Educational Version 2.0 User Guide



Jeffrey W. Bullard


This document serves as the user’s guide for the educational version of the Virtual Cement and Concrete Testing Laboratory (VCCTL) software, version 2.0. Using the VCCTL, a user may create 3D microstructures of cement paste with clinker, calcium sulfate, fly ash, slag, limestone, and other materials. Hydration of these microstructures can be simulated under a variety of curing conditions, and the resulting hardened material can be analyzed for a number of properties including linear elastic moduli, compressive strength, and relative diffusion coefficients. The 3D packing of fine and coarse aggregates in mortar and concrete materials also can be created. The VCCTL software uses a relational database and plotting capabilities to facilitate viewing important characteristics of cement powders, supplementary cementitious materials, fillers, and aggregates. Finally, version 2.0 of the software gives the user control of the execution of his or her simulations.
NIST Interagency/Internal Report (NISTIR) - 7707
Report Number


building technology, computer modeling, cement and concrete


Bullard, J. (2010), Virtual Cement and Concrete Testing Laboratory Educational Version 2.0 User Guide, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed May 23, 2024)


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Created September 24, 2010, Updated November 10, 2018