My brick mortar mix AS I am doing it all in a wheel barrow is just:
I use a 10 litre water bucket,
into the barrow i put 3 x buckets of sand (30kg ish)
half a bucket of cement mix (5 kg ish) and a 1/4 of Lime (2.5kg ish)
I mix it all together and then add 5-6 litres of water
REMEBER, you can always add water you can't take it out !!!
What you want is somethign that sticks to your trowl but doesn't slide off your bricks, i mixed a REALLY wet mix once and it just was a wate as sooooo much disappeared into the brick holes, YES you want that but not toooooo much.
