WEATHERING OF DOLOMITIC SANDSTONE UNDER AMBIENT CONDITIONS

The weathering of White Mansfield dolomitic sandstone has been studied under ambient atmospheric conditions. Specially constructed sampling devices, called ''micro-catchment units'', were installed to sample th e runoff water, i.e. the rain water that Bows over the stones. In a fi rst part of the study, the bulk run-off water was studied (some 500 sa mples), as well as individual particles in the runoff. The second part of the study was focussed on the stone material after three years of exposure. A whole range of modern analytical techniques has been used. An outline of the work and the results is given. (C) 1998 Elsevier Sc ience Ltd. All rights reserved.