Natanzi, Atteyeh S.Atteyeh S.NatanziLaefer, Debra F.Debra F.LaeferZolanvari, S. M. ImanS. M. ImanZolanvari2024-05-242024-05-242020 Elsev2020-07-10Construction and Building Materials0950-0618http://hdl.handle.net/10197/26047A soundless chemical demolition agent was applied for selective demolition to unit masonry [2 full-scale concrete brick walls in Type N mortar and 2 wallettes in lime mortar – 1 historic brick and 1 concrete brick]. Typically, cracking began shortly after 9 h and ultimately produced an average crack length of 418 mm per hole and an average maximum 5.22 mm crack width. Samples in Type-N mortar exhibited slower but significantly more cracks and wider cracking. Ninety-three percent of cracking occurred within 4 days. No masonry units were damaged and partial demolition was successful, although selective unit removal was not due to confinement.enThis is the author’s version of a work that was accepted for publication in Construction and Building Materials. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Construction and Building Materials (248, (2020)) https://doi.org/10.1016/j.conbuildmat.2020.118635Soundless chemical demolition agentHistoric structuresCrackingMasonry structuresExpansive cementUnit masonryConcrete brickMortarJournal Article24810.1016/j.conbuildmat.2020.1186352021-06-2912/ERC/12534https://creativecommons.org/licenses/by-nc-nd/3.0/ie/