historic bricks and type N mortar
historic bricks and type N mortar
(OP)
Came across a project in new england, where the mason completely rebuilt some 7ft tall triple-wythe brick masonry piers with 150+ yr old bricks using type N mortar. it is common knowledge that this is a no-no if it were a repointing job with lime mortar behind... but, most of the references out there don't discuss full reconstruction with old cleaned brick. all the references discuss matching mortar and brick hardness, but i see this as a brick spalling concern for point loading at the cementious repoints, and i have a hard time imagining the failure mechanism if the bricks are fully bedded. Also, it doesn't appear that there is a lot of info about strength testing on bricks to get a sense of the quality compared to today's stronger bricks. there isn't much out there about full rebuild in the Historic Preservation references so i figured i'd throw it out to the web and see what your thoughts are.






RE: historic bricks and type N mortar
Dik
RE: historic bricks and type N mortar
RE: historic bricks and type N mortar
Dik