The Virtual Cement and Concrete Testing Laboratory Educational Version 2.01 (eVCCTL) is now available for download. Please visit the official eVCCTL page for more information and to download the software.
Potential users are strongly urged to download the user guide and check the software and hardware requirements prior to attempting to install the software. Any questions or problems encountered should be directed to the eVCCTL administrator.
The Virtual Cement and Concrete Testing Laboratory Educational Version 2.0 (eVCCTL) was released to a small group of beta testers on 19 May 2010. Based on feedback from this initial beta test, we expect to make minor modifications to the software and issue a general release to the public in late summer 2010.
eVCCTL is a standalone application that runs on Windows XP, Service Pack 3. There is some evidence that it also runs on Windows Vista, but testing has been minimal on that system. Some of the operations that eVCCTL executes are computer-intensive. It is recommended that you install the software on a Windows computer with at least 4 GB of RAM, and preferably 8 GB or 16 GB. Also, multi-core processors are quite useful for executing multiple operations simultaneously without a significant loss in performance.
When released, the software will be distributed as a single executable installer. It will be available for download at this site, but the download is 320 MB and may take a while to download.
The Virtual Cement and Concrete Testing Laboratory (VCCTL) software has undergone major changes to make it more powerful and more intuitive to use. An educational version, called eVCCTL, is now being used by a handful of beta testers around the world. We expect to release eVCCTL to the public in Spring 2009.
When it is released, eVCCTL will be available at this location as a freely downloadable web-based application for computers running Windows XP or Linux operating systems. The software will come with detailed instructions for its installation and use.
If you would like to receive periodic updates about the status of eVCCTL, including a final announcement when it becomes available for download at this site, please e-mail the eVCCTL Administrator with the subject line "eVCCTL Updates".
In the meantime, the legacy software, VCCTL 1.1, which was previously available at this site, has been permanently removed. We regret any inconvenience that this may cause. If you were using VCCTL 1.1 at this location and have created data files that you would like to have, please e-mail the dVCCTL Administrator, specifying exactly which data file(s) you want. The file(s) will be e-mailed to you as an attachment or, if they exceed 2 MB, they will be mailed to you on a CD.
The purpose of VCCTL is to provide a web-based platform for a virtual testing laboratory that can be used by concrete scientists, engineers, and technologists to explore the properties of cement paste and concrete materials. With this software, the user can
The algorithms, procedures, and computer programs available here constitute a prototype system for a virtual laboratory for the testing of cement and concrete. They have been compiled from the best knowledge and understanding currently available, but have important limitations that must be understood and considered by the user. The eVCCTL system is intended for use by persons competent in the field of cement-based materials and with some familiarity with computers. It is intended as an aid in the materials selection, optimization, and design process.
This software was developed at the National Institute of Standards and Technology by employees of the federal government in the course of their official duties. Pursuant to Title 17 Section 105 of the United States Code this software is not subject to copyright protection and is in the public domain. eVCCTL is an experimental system. NIST assumes no responsibility whatsoever for its use by other parties, and makes no guarantees, expressed or implied, about its quality, reliability, or any other characteristic. We would appreciate acknowledgment if the software is used.
The U.S. Department of Commerce makes no warranty, expressed or implied, to users of eVCCTL and associated computer programs, and accepts no responsibility for its use. Users of the VCCTL assume sole responsibility under federal law for determine the appropriateness of its use in any particular application; for any conclusions drawn from the results of its use; and for any actions taken or not taken as a result of analyses performed using these tools.
Users are warned that eVCCTL is intended for use only by those competent in the field of cement-based materials and is intended only to supplement the informed judgment of the qualified user. The software package contains computer models which may or may not have predictive value when applied to a specific set of factual circumstances. Lack of accurate predictions by the models could lead to erroneous conclusions with regard to materials selection and design. All results should be evaluated by an informed user.