Khanlari,G.R., Heidari,M. and Momeni,A.A.(2012): Assessment of weathering processes effect on engineering properties of Alvand granitic rocks (west of Iran), based on weathering indices. Environ. Earth Sci., 67, 713-725.

『風化インデックスを基にした、アルバンド花崗岩類(西部イラン)の工学的性質に与える風化過程の評価』


Abstract
 The Alvand batholith is one of the largest plutonic bodies in the west of Iran. In this research, several physico-mechanical tests have been performed on granodiorite and porphiroid monzogranite consisting of five degrees of weathering in Hamedan area, west of Iran. Furthermore, weathering process of Alvand granitoid is studied by chemical analysis and petrographical studies. The results indicated that engineering properties of weathered granodiorite and monzogranite vary over the wide range depending on the degree of weathering. On the other hand, this research is focused on the assessment of relationship between weathering indices and uniaxial compressive strength. For this reason, some of the most important weathering indices are reviewed. It should be noted that, application of these chemical, engineering and petrographical indices are good quantitative indicators for describing the degree of weathering. Using these indices for the assessment of uniaxial compressive strength of granodiorite and monzogranite rocks, yields suitable and meaningful results.

Keywords: Weathering indices; Granodiorite; Monzogranite; Alvand granitoid』

Introduction
Geological setting
A review of the weathering indices
 Petrographical indices
 Engineering indices
 Chemical indices
Materials and methods
 Material identification
 Sampling and laboratory studies
Results and discussion
 Mineralogical characteristics
 Chemical analysis
 Physical and mechanical properties
 Weathering indices
 Correlation between UCS and weathering indices
Conclusions
Acknowledgments
References


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