LESSON 7 Flashcards
in geology, it is a naturally occuring solid aggregate of one or more minerals (silicates and non-silicates)
stones or rocks
it is usually used as a building material because of its great durability and superior artistic quality
stones or rocks
a branch of geology that studies the origin, composition, distribution and structure of rocks
petrology
a branch of petrology that focuses on detailed description of rocks (shape and cleavage relief) lack of knowledge may lead to wrong diagnosis and faulty conservation practices
petrography
causes of stone decay
- earthquake
- fire
- terrorism
- vandalism
- neglect
- tourism
- previous treatment
- wind
significantly contribute to masonry decay by causing structural damage, mortar detoriations and foundation issues
earthquake
high temperatures during a fire can cause chemical changes in masonry material
fire
___ attacks contribute masonry decay by causing physical damage, exposing structures to harsh environmental conditions
terrorism
action involving deliberate destruction of or damage to public or private property, willful or malicious destruction or defacement of public or private property
vandalism
fail to care for property, to pay no attention or too little attention to; disregard
neglect
heavy tourist traffic may lead to wear and tear of the concrete floor surface, pollution caused by increased vehicular traffic, vandalism and theft
tourism
the harmful intervention or prior restoration works
previous treatment
wind forces can break the building’s load path or punch a hole in the building envelope. sometimes the actual force of high winds can cause a door or window to break open. other times nearby debris can be picked up in the wind and projected against the building envelope
wind
other causes of stone decay
- flood
- rain
- frost
- temperature fluctuations
- chemical attack
- salt growth
- pollution
- bio-detoriation
- intrinsic factors
- maintenance
