The Office of Materials has tested several concrete aggregate sources for potential alkali-silica reactivity.
The 14 day expansion test results are summarized for years 2007 and newer using the Office of Materials and Road Research's LIMS database.  
Results are summarized for years 2006 and older from the Maplewood Cement Lab's Access database.
To begin, choose the county and pit number, then click "View Report".
                        Concrete ASR Report Data

                        Choose County Name: 



                        Choose Pit Number: