A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Selective demolition of masonry unit walls with a soundless chemical demolition agent
Highlights SCDA insertion into unit masonry walls of new and historic bricks and mortar. Type N mortar exhibited slower but significantly more and wider cracking than lime only mortar. Partial demolition, though not selective unit removal, was achieved for the first time in masonry walls. Demonstrated viability of SCDAs for partial demolition of full-scale unit masonry.
Abstract A 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.
Selective demolition of masonry unit walls with a soundless chemical demolition agent
Highlights SCDA insertion into unit masonry walls of new and historic bricks and mortar. Type N mortar exhibited slower but significantly more and wider cracking than lime only mortar. Partial demolition, though not selective unit removal, was achieved for the first time in masonry walls. Demonstrated viability of SCDAs for partial demolition of full-scale unit masonry.
Abstract A 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.
Selective demolition of masonry unit walls with a soundless chemical demolition agent
Natanzi, Atteyeh S. (author) / Laefer, Debra F. (author) / Zolanvari, S.M. Iman (author)
2020-03-01
Article (Journal)
Electronic Resource
English
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