Browse Forums Building Standards; Getting It Right! Re: Brick Mortar 37Apr 19, 2010 2:15 pm The 6 sand ratio is a compromise between elasticity and compression strength, to allow for movement, less than 6 will reduce the ability to take up movement. Lime is added for workability during placement, but primarily to add a property know as autogenous healing to fix hairline movement cracking, detergent is a non approved additive and reduces the mortar strength dramatically, it does however improve workability, hence its use. if the specification is not met you don't accept it, its that simple, you can have it tested by a independent chemical engineer cheaply. Confiscate the detergent immediately!!! Hi, I am planning to select San Selmo reclaimed original for the fascade of my build. I have seen many photos on line of the brick varying from a rustic to a neat finish.… 0 4578 Building Standards; Getting It Right! Hi, sorry if this is the wrong place - I’m new to the property/building journey (trying to buy my first home) so not sure where/who to go with these sorts of… 0 19158 2 8876 |