Thread: Portland cement
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adder1969 adder1969 is offline
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Default Portland cement

On Dec 17, 12:43 pm, "George" wrote:
"The Natural Philosopher" wrote in . net...





George wrote:
how long does it keep after opening the bag?


TIA


That entirely depends on local hunmidity.


I had a bag I got this summer for some odd jobs. Left outside in the old
landrover.


The outside and top had caked, but inside it was still powdery. It set
Ok when I had to put in two half bricks to tidy up some decorative
brickwork.


If you seal it against moisture,. it lasts forever. If it gets rained
on, its a solid lump the next day ;-)


If its still powdery, its OK.


Hah! yes sorry forgot to mention the bag has been kept inside with a
relatively good warmish condition.

Just checked, it has gone a bit hard on top.- Hide quoted text -


From my experience if it's still powdery (like new cement) then it
works fine. ..but I maybe wouldnt' use it on something critical if
it's a mix of powder and clumps.