The preservation of stone

Journal Article · Thu Jun 01 00:00:00 EDT 1978 · Sci. Am.; (United States)

DOI:https://doi.org/10.1038/scientificamerican0678-126· OSTI ID:6872574

Gauri, K L

Novel chemical treatments are described which will retard the erosion of stone structures caused by weathering. In urban atmospheres rich in sulfur, nitrous oxides and carbon dioxide, stone decays quite rapidly. Consolidation of stone is accomplished by three methods: 1) replacement of the calcium of calcite or gypsum with barium; 2) precipitation of chemically resistant materials in the pore spaces of the stone; and 3) treatment with organic monomers and prepolymers. After such a substance has been introduced into the stone it is made to polymerize by means of a curing agent in the solution. On polymerization it recements the dislodged grains of the weathered stone. (JMT)

• Research Organization: Univ. of Louisville, KY
• OSTI ID: 6872574
• Journal Information: Sci. Am.; (United States), Vol. 238:6
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
36 MATERIALS SCIENCE
ACID RAIN
ENVIRONMENTAL EFFECTS
BUILDING MATERIALS
PRESERVATION
CARBON DIOXIDE
NITROGEN OXIDES
POLYMERS
USES
SULFUR
DAMAGE
AIR POLLUTION
ATMOSPHERIC PRECIPITATIONS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
ELEMENTS
MATERIALS
NITROGEN COMPOUNDS
NONMETALS
OXIDES
OXYGEN COMPOUNDS
POLLUTION
RAIN
500200* - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)
360400 - Polymers & Plastics- (-1987)