Alkali Aggregate Reaction

Expansion Data Base

Site Under Construction


Image courtesy of Derek Cong (WJE/Austin)

Quick Link

to visualize beta version of site and provide comments.

Background

Alkali Aggregate Reaction (AAR) is increasingly a major source of concern in the aging of concrete structures, and as such much research is performed.

This research includes monitoring the expansion of mortar bars or concrete specimens under controlled conditions for both freshly cast mortar/concrete and cores recovered from sites.

Regretfully, experimental data are typically unpublished other than as charts in publications, and with limitied related information to faciitate data analysis.

Objectives

Given the lack of easily accesible expansion data, this site seeks to populate a database (aardb) which enables researchers to either upload or download data.

The process is quite simple:

  1. First users who would like to upload data should register by contacting me. A username and password will be issued. You register, and enter germane information (name, email, affiliation).
  2. Once registered, you could login to the data-entries portal, and upload as manny data sets as you wish. There is ample room for you to also upload many details about the concrete mix (both SI and USCS units), as these may be important for data comparaison.
  3. The data will be stored in an SQL data base. A python program will generate graphs in either set of units, and possibly a pdf file associated with each set of data.
  4. (Any one could then) Access/visualize/download data uploaded by others. A Search feature will allow users to request specific data sets.

Procedure

Operation with (aardb) is quite simple

Upload data

Register with the current database administrator (myself :-) by emailing a request to saouma [at]colorado[dot]edu. . During this trial period, this feature is deactivated.

Once a password has been issued, you could then login and register. Again, deactivated for now

Registered users then upload data .

Data Visualization

You need not be registered, anyone could access the web site to search and download.

Evaluation Phase

Following the initial development, and before further extension, I thought that it is time to seek comments from the potential user community by simply
  1. Opening the web site for all to access the data entry web page, note that data saving option is deactivated for now.
  2. Provide (at the end of the page) a feature which will allow potential users to provide comments. These in turn will be taken into account prior to further development.

Disclaimer

Though I am currently funded by the Nuclear Regualatory Committee and the Oak Ridge National Laboratory for AAR related research, and am chairman of RILEM TC 259-ISR Prognosis of deterioration and loss of serviceability in structures affected by alkali-silica reactions this development is entirely voluntary and does not imply endorsement from any of the above.

i.e. financial support to maintain this site will be nevertheless welcome ☺

Victor Saouma

University of Colorado,

Boulder, CO 80309-0428

URL

URL/AAR