Experimental modelling of replacement of calcite and marble by gypsum in connection with a problem of city monuments protection
|
| RMS-DPI code: |
2007-1-67-0 |
 |
| Scientific session: |
Session 3. Synthesis of crystalline materials and experimental mineralogy |
|
| Author listing: |
Sinay M.Yu., Mosyagin A.V., Timasheva M.A., Esipova I.V., Frank-Kamenetskaya O.V. |
|
| Principal author: |
Sinay Marina |
|
| Language: |
Russian |
|
Abstract - Summary
(short description): | |
| Calcite and marble replacement by gypsum is one of the most dangerous destructive processes for city monuments. Details of this process and mechanisms of transformation of SO2 to [SO4]2- on building surfaces have been investigated. Modelling experiment has shown that gypsum growth on calcite occurs if solutions contains [SO4]2- as well as [SO3]2- ions. The supposed scheme of the process is: 1) SO2+H2O = H2SO3; 2) 2CaCO3 + 2H2SO3 + O2 = 2CaSO4 + 2H2O + 2CO2. An additional factor influenced morphology of gypsum crystals can be chlorides or organic acids in solutions. |
|
|
| RMS-DPI code: |
2007-1-67-0 |
|
Proceeedings volume
in the RMS catalogue: | Crystallogenesis and Mineralogy |
|
| Pages: |
129-131 |
|
File of proceedings
(PDF): |
361 K
|
|
| Status: |
printed |
|
| Recieved: |
15/05/2007 |
|
| Accepted: |
16/05/2007 |
|
| Published on-line: |
05/01/2008 |
|
| Permanent address of publication: |
http://www.minsoc.ru/2007-1-67-0/ |
|
| Contact author(s): |
Sinay, Marina |
|
Presentations
NEW !!! 
minsoc.ru ()