Current language in Section 5.6.1 of C109, tells the user to check the tamper for design and dimensional requirements at least every 2.5 years. This is unacceptable timeframe as the rectangular rubber tampers become worn, rounded and can peel in much less than 2.5 years. New language will be proposed.
Keywordscompressive strength; hydraulic cement mortar; hydraulic cement strength; mortar strength; strength;
Ballot Item Approved as C109/C109M-2016A and Pending Publication