freeze-thaw is one of the most powerful weathering agents that may cause a rapid change in the initial engineering properties of stones, and limit their durability. freeze-thaw induces stress over the pores’ surface of stones. consequently, stone durability is closely related to its engineering and physical properties. the purpose of this study is estimating the engineering properties of deteri...

Sandy beaches are the result of a dynamic interaction among physical conditions, biological processes and anthropic impact (essentially linked to natural resource direct or indirect exploitation). Monitoring health state coastal areas is fundamental tool for land-use management. Moreover, integrated sedimentological studies with multidisciplinary methodologies increasingly needed. This study ai...

cheshmeh-konan area is located ~15 km northwest of tasuj, east-azarbaidjan province. the most important lithologic units of the area are red sandstones, green-gray sandstones, shale, and marl (miocene). based on field evidence and petrographical investigations, the host sediments were deposited in a peritidal setting associated with a sabkha-type environment. copper mineralization in the area o...

In this study, the features of fly ashes originating from industrial-scale high volatile bituminous coal combustion and co-combustion with 10% admixture alternative fuel SRF (solid recovered fuel) are presented, emphasis on organic petrographical characteristics. The mineralogical data co-evaluated geochemical data, aim to provide a full classification studied ashes, as well base information to...

the badamu formation (upper toarcian-middle bajocian) mainly consists of limestone and shale and has is cropped out in east of iran. the badamu formation conformably overlays shemshak formation and is underlaid sharply by hojedk formation in kerman area and is underlaid gradually by baghamshah formation in tabas and southern khorasan areas. the aim of this work is petrographical study of rocks ...