We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Damage Functions and Mechanism Equations Derived from Limestone Weathering in Field Exposure.
- Authors
Delalieux, F.; Cardell-Fernandez, C.; Torfs, K.; Vleugels, G.; Van Grieken, R.
- Abstract
In this article damage functions and mechanism equations are elaborated for Massangis limestone, exposed to ambient atmospheric conditions. Limestone slabs were placed in five different environments in Belgium and run-off water was collected for chemical analyses, over a 3 yr period. To elucidate the weathering mechanism and the relative contributions of different deleterious factors, calcium concentrations in run-off water were regressed versus the total (wet + dry) deposition of ions onto the stone, gaseous atmospheric pollutant concentrations and meteorological parameters. The data matrix (30 000 analytical results) was interpreted using Multiple Linear Regression (MLR) and Partial Least Squares Regression (PLS). Mechanism equations and damage functions were first established for each of the five studied sites separately and subsequently pooled regressions were calculated. A damage function is proposed and compared with limestone damage functions found in the literature, after introducing the field data presented in this work into the respective functions. Massangis limestone mass loss is best predicted with a PLS model. Rainwater volume is the most decisive factor in causing mass loss at all sites, and sulphate and bicarbonate are the most important weathering products. Models established using MLR result in less reliable predictions of mass loss compared to PLS.
- Subjects
LIMESTONE; WEATHERING; ANALYTICAL chemistry; REGRESSION analysis; POLLUTANTS; CARBONATE rocks
- Publication
Water, Air & Soil Pollution, 2002, Vol 139, Issue 1-4, p75
- ISSN
0049-6979
- Publication type
Article
- DOI
10.1023/A:1015827031669