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Posted: Thu Feb 01, 2018 8:38 am
by matt_north
Just a very quick question. Is there a good reason for using Plasticiser with a moist mix (rather than a wet mix). Just wondering if it will increase it's workability while still remaining relatively dry leaving a fairly solid working surface when laying, or am i taking away the advantages of a moist mix?
Posted: Thu Feb 01, 2018 5:13 pm
by lutonlagerlout
generally using a plasticiser means you require les water which is a good thing
we just use 150 ML of SBR per mix grit sand to cement 5:1
LLL
Posted: Fri Feb 02, 2018 7:28 am
by matt_north
Thanks LLL for the reply.
Posted: Sun Feb 04, 2018 10:22 am
by Tony McC
You'll also find that it's a bit easier to settle flags onto a moist mix bed when it's been prepared using a plasticiser. It does what it says: it plasticises, making the mortar more fluid, easier to move, easier to spread.
Try it for yourself. Try an unplasticised mortar. See how awkward it is to handle, how it falls apart when moved, how it's harder to squeeze and therefore harder to lay onto. You'll soon be back on a plasticised mortar! 
Posted: Tue Feb 06, 2018 1:00 pm
by matt_north
Thanks Tony, i was initially thinking of using a plasticiser. Just need someone to turn the temperature up!
Posted: Tue Feb 06, 2018 1:42 pm
by Tony McC
I'm doing what I can! 