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Mine activity and acid mine drainage formation is one of the biggest environmental problems related not only to environment components influence (soil, biosphere, plants and surface water) but also to man-made materials as concrete degradation because of its chemical composition and microorganisms’ content. Corrosion associated with microorganisms has been recognized for over 50 years and yet the study of microbial involved corrosion is relatively new. Generally, microbial involved corrosion is caused by the exc...

The incorporation of industrial by-products such as fly ash, slag, silica fume in concrete can significantly enhance its basic properties in both the fresh and hardened states. These materials greatly improve the durability of concrete through control of high thermal gradients, pore refinement, depletion of cement alkalis, resistance to chloride and sulphate penetration, and continued microstructural development through a longterm hydration and pozzolanic reaction. The utilisation of by-products as the partial rep...

The presence of aerosol particles is strongly related with increased morbidity and mortality even at the ordinary aerosol concentration levels that occur in the urban environment. Aerosols contamination of indoor environment can originate from both outdoor and indoor sources (cooking, smoking etc.). Dangerous effect of particles consists in their penetration and deposition into human respiratory system. Because of inhalation exposure not only particulate size is important, but also particulate matter’s chemical ...

This work began with the hypothesis that buildings are designed and built to enhance the quality of our life. Many buildings fail to perform adequately and cause illness and productivity losses to the occupants. A lot of US and Europe studies have made the adverse health effects caused by indoor environmental exposure become more and more apparent. The growing impact of indoor pollution problem and property values, and its rise at the subject of litigation, has shown that limitations and the lack of comprehensiven...

The utilization possibilities of secondary raw materials in civil engineering are presented in this paper. Three various solid waste kinds were tested as a partial cement or natural aggregate material replacement in construction applications. The influence of mechanically and chemically activated coal fly ash as 25 wt. \% cement replacement and steel slag and recycled concrete as aggregate fraction replacement on compressive strength development of composites during hardening was investigated. The addition of the ...