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Powdered waste sludge from the production of technical stone (TSW), produced by theTechniStone® Company (Hradec Kralove, Czech Republic), was surface modified withFe2+ and Mn2+ inorganic salts and then testified as a potential adsorbent ofenvironmentally important oxyanions (phosphate PO43-, arsenate AsO43- and chromateCrO42-) from contaminated waters. The surface modification in principle consisted increating a thin layer of hydrated Fe/Mn ions in reactive form on the TSW surface.Thanks to the change of the surfa...

In the presented study, new types of lightweight plasters for passive moderation of interior climate were designed and tested. The examined plasters were composed of blended mineral binder (cement-lime or gypsum-lime), silica sand, perlite, chemical additives, and batch water. For the basic characterization of studied materials, bulk density, specific density, and total open porosity were measured. The mechanical resistance of the developed plasters was assessed in flexural and compressive strength tests. The ther...

The reduction of carbon dioxide emissions become the global effort of entire scientific community. Various environmental friendly technologies are currently developed and also applied worldwide. The concrete is the most used building material on Earth and its production is still rising. Its production is related to huge emissions of carbon dioxide due to Portland cement production and generation of waste such as concrete slurry waste (CSW). Sedimented CSW contains considerable amount of cement, calcium and fine fi...

Natural hydraulic lime (NHL) belongs to traditional binders used in civil engineering for centuries. Hydraulic lime (both natural or artificial) may be considered as binder which properties represents a transition between air lime (pure CaO or Ca(OH)2) and Portland cement (PC). It means that NHL contains hydraulic compounds (as PC) and CaO/Ca(OH)2. The significant difference is in calcination temperature ? NHL is calcined at lower temperature than Portland clinker i.e. there is lower energy consumption (and carbon...