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VCCTL Software

(Return to Cement Hydration and Degradation Modeling Software)

The Virtual Cement and Concrete Testing Laboratory (VCCTL) software provides a virtual testing laboratory environment that can be used by concrete scientists, engineers, and technologists for virtual testing of cement paste and concrete materials. With this software the user can

  • create virtual materials, using carefully characterized cement powders, supplementary cementitious materials, fillers, and aggregates;
  • simulate the curing of these materials under a wide range of conditions; and
  • calculate their thermal, mechanical, and transport properties as a function of their processing

This software was developed in collaboration with the Virtual Cement and Concrete Testing Laboratory consortium.

New in Version 9

  • Upload, edit, and save cementitious materials and aggregates
  • Use experimental calorimetry or chemical shrinkage measurements to calibrate hydration kinetics
  • Option to add CSH seeds to binder for accelerating hydration
  • Support for conductive aggregate sources to simulate effects of lightweight aggregates
  • Mixing of spherical fly ash and silica fume with real-shape cement particles
  • Create and save aggregate gradings for easier mixing of mortar and concrete
  • Calculate relative conductivity of cement paste, mortar, or concrete
  • Calculate and display concrete elastic moduli and compressive strength
  • More control over mix design, including support for mixing different sources of aggregate
  • Optionally view 3D microstructure images with depth information or as simulated backscattered electron micrographs
  • View movies of hydrating microstructures
  • View histograms of pore size distribution within hydrated microstructures


Created December 6, 2010, Updated August 12, 2021