HI Rob, could i ask why your preference for is for 1:2:9 mortar mix, is this mainly due to its plasticising quality's, i use to love using the college mortars when i was an apprentice (just the lime mortar)
Love the videos but I have a question about this one I know that it is not practical but you are suppose to weigh the materials to gauge them not gauge by volume as for example when sand is wet it will have more volume, so with lime the calculations are correct and should not be half you just need a bigger box for the lime than the cement
yes, sand will increase in weight up to 30% this is why correct storage of aggregates is essential, on a tarpaulin on well drained ground and covered with polythene sheeting to prevent rainfall saturating it and giving inaccurate gauging.
Hi Matthew. Concrete plants gauge by weight when mixing loads as they have the computer systems to do this but on site a bucket is the best available method
How does English bong equate to double the amount of bricks? Are you talking in terms of labour as you are just splitting the brick in half and using both sides?
English bond, in the case mentioned, is a two rows of stretchers, one behind the other, and a row of headers, to bond the wall. So a wall built like this has no cavity, but is very strong. Houses in England were built using a variation of this, often five rows stretchers, one row headers, before the Great War (WW1).
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HI Rob, could i ask why your preference for is for 1:2:9 mortar mix, is this mainly due to its plasticising quality's, i use to love using the college mortars when i was an apprentice (just the lime mortar)
Yes, the least amount of cement in a mix the better
Thank you very much that deduction off lime was very useful tip...
Thanks for your videos rob! great help.
Could i ask howmuch Mortar per block? / Per sqm of block work standard 225x450 ?
There is a video on mortar for blockwork, please watch that
And thank you for watching
Love the videos but I have a question about this one I know that it is not practical but you are suppose to weigh the materials to gauge them not gauge by volume as for example when sand is wet it will have more volume, so with lime the calculations are correct and should not be half you just need a bigger box for the lime than the cement
yes, sand will increase in weight up to 30% this is why correct storage of aggregates is essential, on a tarpaulin on well drained ground and covered with polythene sheeting to prevent rainfall saturating it and giving inaccurate gauging.
Hi Matthew. Concrete plants gauge by weight when mixing loads as they have the computer systems to do this but on site a bucket is the best available method
How does English bong equate to double the amount of bricks? Are you talking in terms of labour as you are just splitting the brick in half and using both sides?
English bond, in the case mentioned, is a two rows of stretchers, one behind the other, and a row of headers, to bond the wall. So a wall built like this has no cavity, but is very strong. Houses in England were built using a variation of this, often five rows stretchers, one row headers, before the Great War (WW1).
Rob, are you sure with 2500 tons of sand? Shouldn't be 2,5 ton? (2500kg / 1000 = 2.5)
S it's 2.5T
Just a thought. You wouldn't need to calculate mortar for the brick wastage only the ones in the wall.