Open AccessThe effect of zinc, water to binder ratio and silica fume on the hydration and mechanical properties of Portland cement mixtures
Author(s) -
Pavel Šiler,
Iva Kolářová,
Jan Bednárek,
Martin Janča,
Jiří Másilko,
R. Novotny,
Tomáš Opravil
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/583/1/012008
Subject(s) - portland cement , silica fume , zinc , cement , materials science , clinker (cement) , raw material , calorimetry , composite material , metallurgy , chemical engineering , chemistry , organic chemistry , physics , engineering , thermodynamics
The amount of zinc in the clinker or in the secondary raw materials has been increasing in recent years mainly due to the processing of waste materials containing zinc. The aim of this work is to show the effect of zinc on hydration of Portland cement and mechanical properties. These effects were studied by isoperibol calorimetry and mechanical properties testing. Zinc was added to the cement in the form poorly soluble compound ZnO. The concentration of zinc added was chosen as 1wt. percent. The newly formed compounds during hydration were identified by X-ray diffraction method (XRD). Another objective is to show the effect of silica fume (microsilica, SF) as the secondary raw material and water to binder ratio on hydration of cement in the presence of zinc.