one of the main factors of premature deterioration of concrete structures is the corrosion of reinforcements. chloride penetration of concrete is one of the main reasons of this phenomenon. therefore, to have durable structure, it is necessary to have concretes with low permeability.there are various methods to evaluate permeability of concrete. finding a relationship between them can be useful...

The magnetotelluric (MT) sounding of a layered Earth model involving transitional layer has been widely studied, and MT responses the with dipping anisotropic conductivity have also treated. However, incorporating both anisotropy seldom considered. analytical solution such geoelectrical including three layers was derived in this study. middle exponentially varying depth, which covered by homoge...

Landslides in the Thompson River Valley, British Columbia, Canada, threaten serviceability of two railway lines that connect Vancouver to rest Canada and US. To minimise impact slope instability on vital transport infrastructure, as well terrestrial aquatic ecosystems, public safety, communities, local heritage, economy, better inform decision making, there is a need for monitoring. Since 2013,...

Abstract Infrastructure development in the northern coast of Java continues to take place. The study and support subsurface geological data value hydrogeological parameters is one important sustainable development. existence well exploration reportedly can researchers for model validation calibration. We carried out One-Dimensional Two-Dimensional geoelectrical acquisition along with drilling K...

The article presents the comparison of the implementation of the inverse problem in geoelectrical methods in two different parallel computational environments. Combination of Monte Carlo method and Multistart algorithm was applied in the inversion process. Parallelization was done by fine grain decomposition. Execution time, speed-up and efficiency received for parallel algorithms in both compu...

Landslides can be occurred in almost every natural slope or artificial slowly suddenly with without any prior signs. The main reason for collapse is the increase shear stress landslide, decrease strength, both. Landslide problems result loss of life and property, damage to environment, infrastructure, public facilities, disrupt livelihood generally. detected by exploration subsurface. geoelectr...

The method of time domain electromagnetic (TDEM) migration is used for fast imaging of subsurface geoelectrical structures. The computation of the migration field is based on downward extrapolation of the observed field in reverse time. In this paper we examine an effective method of EM migration based on the operator of an integral transformation in the spatial-temporal domain. The migration c...

magnetotelluric (mt) method is an electromagnetic technique that uses the earth natural field to map the electrical resistivity changes in subsurface structures. because of the high penetration depth of the electromagnetic fields in this method (tens of meters to tens of kilometers), the mt data is used to investigate the shallow to deep subsurface geoelectrical structures and their dimensions....

Geoelectrical resistivity measurements were conducted in five locations within the eastern portion of Dahomey basin for purpose subsurface evaluation and detecting saturated zones. The are Covenant University (L1), Bells (L2), Oju-Ore-Ilogbo Road (L3), Obasanjo-Ijagba (L4), Iyana Iyesi (L5). study was carried out to avert common challenges drilling low-yield groundwater boreholes area. A total ...