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CONFORMITY AND RISK LEVEL APPLIED IN THE CLASSIFICATION OF ROCKS USED IN CONSTRUCTIONS
Abstract
Given their wide spectrum of utilizations, the interest for mapping new reserves and prospective areas of useful rocks becomes crucial. On the Romanian territory the natural occurrence of useful rocks is widely spread on the foreland zone, and on the Carpathian structures. These rocks have multiple uses in constructions and various other civil/industrial sectors. Besides being used as raw material in buildings, roads and a variety of miscellaneous engineering works, depending on their petrographic type, these useful rocks are also used for ornamental-decorative purposes. This interest is enhanced by the rapid development of the construction industry, with special emphasis on terrestrial transportation infrastructures. In order to acquire the desired construction quality of the terrestrial transportation infrastructures, a thorough understanding of the used materials and their behavior under heavy traffic and weathering factors is required. Geomechanical assessment of rocks requires knowledge of phenomena that occur under the influence of internal and external factors at a macroscopic or microscopic scale, when rocks are submitted to different actions. A new ranking method is proposed, based on considering the rock characteristics as indicators of quantitative assessment, and the grading system, by given points, allowing the rocks framing in admissibility classes. The proposed method constitutes an appropriate instrument for assessment and verification of the requirements regarding the quality of rocks used for sustainable construction.
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