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ASTM C780 cylinder storage question

ASTM C780 cylinder storage question

ASTM C780 cylinder storage question

(OP)
I am wondering if water storage tanks can be used instead of a moist room to cure mortar cubes until the desired break period is up.

Thanks for your time
jb

RE: ASTM C780 cylinder storage question

See ASTM C109, section 10.5 .  You keep the specimens in the moist room for 20 to 72 hours.  If removed from moulds before 24 hours, keep in moist room until 24 hours then immerse in lime saturated water.  Strange wording - the water storage tanks seems only to apply to the cubes removed from mould before 24 hours (editing problem?).
Section 10.6 says to test the specimens right away after removal from moist room/moist closet for 24 hr test or from storage water in other cases.

RE: ASTM C780 cylinder storage question

(OP)
Thanks for the info BigH. The wording in Section 10.6 is a little odd.

RE: ASTM C780 cylinder storage question

I work a concrete lab in NZ and  can tell you that most of the labs here use water curing tanks. with the temp set at 21 degrees..its a acceptable practise is I feel is better as they take less room....

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