Vliv použití recyklované vody s příměsí sádry na hlavní parametry čerstvého a ztvrdlého betonu

Abstract

The subject of this thesis is to assess the impact of recycled water on the properties of mortar . In the theoretical part of the thesis describes the production of concrete , concrete elements and chemical nature hardening . Subsequently, chemical additives used in the manufacture of concrete , use , composition , chemical nature and impact of recycled water ingested into the concrete. The assessment was used cement CEM I 42.5 R and sodium sulphate in the initial water concentration in the 2000, 3000 , 4000 mg / l . The work is done determining the consistency of fresh mortar , strength testing hardened concrete at different times and determine the shrinkage channeling method. Finally , analyzes were made of hardened mortar