The method for IR spectrum currently stated in C494-13 is outdated. More modern methods are available and are being used. The ballot item will be to add E1252 to C494 as an alternate method for IR spectrum.
Keywordsaccelerating; chemical admixtures; concrete; physical requirements; retarding; specific performance; testing; water reducing;
Ballot Item Approved as C494/C494M-2015A and Pending Publication