ASTM-C231 Complete Document History
Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method

Complete Current Edition:
   2017A EDITION - Air Content of Freshly Mixed Concrete by the Pressure Method - June 15, 2017

Obsolete Revision Information:
   2017 EDITION - Air Content of Freshly Mixed Concrete by the Pressure Method - April 1, 2017
   2014 EDITION - Air Content of Freshly Mixed Concrete by the Pressure Method - July 15, 2014
   ADOPT WITHDRAWN - FYI ONLY: DOD ADOPTION WITHDRAWN - April 12, 2011
   2010 EDITION - Air Content of Freshly Mixed Concrete by the Pressure Method - Oct. 1, 2010
   2009B EDITION - Air Content of Freshly Mixed Concrete by the Pressure Method - Dec. 15, 2009
   2009A EDITION - Air Content of Freshly Mixed Concrete by the Pressure Method - July 1, 2009
   2009 EDITION - Air Content of Freshly Mixed Concrete by the Pressure Method - July 1, 2009
   2008C EDITION - Air Content of Freshly Mixed Concrete by the Pressure Method - Oct. 1, 2008
   2008B EDITION - Air Content of Freshly Mixed Concrete by the Pressure Method - June 1, 2008
   2008A EDITION - Air Content of Freshly Mixed Concrete by the Pressure Method - April 15, 2008
   2008 EDITION - Air Content of Freshly Mixed Concrete by the Pressure Method - Jan. 15, 2008
   2004 EDITION - Air Content of Freshly Mixed Concrete by the Pressure Method - July 1, 2004
   2003 EDITION - Air Content of Freshly Mixed Concrete by the Pressure Method - Sept. 10, 2003
   1997(E1) EDITION - EDITORIALLY CORRECTED - April 1, 1999
   1997 EDITION - Air Content of Freshly Mixed Concrete by the Pressure Method - Jan. 10, 1997
   1991B EDITION - Air Content of Freshly Mixed Concrete by the Pressure Method - Nov. 15, 1991
   1991A EDITION - Air Content of Freshly Mixed Concrete by the Pressure Method - Oct. 15, 1991
   DOD ADOPTION - FYI ONLY: DOD ADOPTED - June 28, 1991
   1991 EDITION - Air Content of Freshly Mixed Concrete by the Pressure Method - April 15, 1991
   1990 EDITION - Air Content of Freshly Mixed Concrete by the Pressure Method - June 21, 1990
   1989A EDITION - Air Content of Freshly Mixed Concrete by the Pressure Method - May 28, 1989
   1989A(E1) EDITION - EDITORIALLY CORRECTED - Jan. 1, 1989
   1971T EDITION - Air Content of Freshly Mixed Concrete by the Pressure Method - Jan. 8, 1971