SS 509-1:2015
[Current]
Code of practice for cleaning and surface repair of buildings – Part 1 : Cleaning of natural stone, brick, terracotta, concrete and rendered finishes
...1
Stones are naturally formed materials composed of a wide range of minerals and have extremely
diverse microstructures and fabrics...
...Formation Example of building material
Igneous By cooling, crystallization and
solidification of magma at or
below the Earths surface
Coarse-grained granite; fine-grained
basalt
Sedimentary By sediments composed of
particles of eroded rock beco...
...formed by chemical precipitation, mostly with
accumulation of shells and skeletons of sea
creatures
Metamorphic By effect of pressure and heat on
igneous or sedimentary rocks
Quartzite; marble; slate
NOTE 2 The terms in this table are sometimes...
