Contaminant transport analysis was performed for four selected solid waste landfill designs using the computer code POLLUTE. The diffusion coefficients were determined for the natural soils (aquitard) and compacted soils from the Urumia landfill site, using the diffusion tests. These coefficients along with the geometrical, physical, and chemical parameters of the natural soil and engineered la...

Radiation enhanced diffusion at the surface of metals has been observed and studied for low-energy nitrogen ions at the surface of copper. The displacement of the target atoms during irradiation creates vacancies and other defects near the surface, thus enhancing the diffusion of implanted materials toward the surface and also into the solid. The mechanism has been studied here by a specia...

The aim of this study is to investigate the durability concrete with fly ash as a fine aggregate (CFA) in chloride salt environments. natural diffusion method used analyze strength, ion concentration, and coefficient after erosion laboratory environment. In addition, scanning electron microscopy, X-ray diffraction, Mercury intrusion porosimetry are performed clarify deterioration mechanism resu...

Contaminant transport analysis was performed for four selected solid waste landfill designs using the computer code POLLUTE. The diffusion coefficients were determined for the natural soils (aquitard) and compacted soils from the Urumia landfill site, using the diffusion tests. These coefficients along with the geometrical, physical, and chemical parameters of the natural soil and engineered la...

The transport properties of various anion and cation exchange membranes were studied in different electrolyte solutions using chronopotentiometry technique to get insight about the influence of the counter ion on the transport properties of the membranes. The investigated samples include heterogeneous ion exchange membranes varying in the functionality of fixed charged gro...

The influence of a chloride-ion adsorption agent (Cl agent in short), composed of zeolite, calcium aluminate hydrate and calcium nitrite, on the ingress of chloride ions into concrete and mortar has been experimentally studied. The permeability of concrete was measured, and the chloride ion content in mortar was tested. The experimental results reveal that the Cl agent could adsorb chloride ion...

This study aims to investigate the chloride diffusion behavior of alkali activated slag and fly ash blends with different contents waste glass powder (GP) addition. The reaction heat flow slag/fly ash/waste is characterized. products are determined by X-ray diffraction thermogravimetric analysis (TGA). N2 adsorption (BET) used evaluate microstructure samples. accelerated penetration test (ACPT)...