منابع مشابه
Modeling of Hydration Kinetics and Shrinkage of Portland Cement Paste
MODELING OF HYDRATION KINETICS AND SHRINKAGE OF PORTLAND CEMENT PASTE
متن کاملSEM investigation of microstructures in hydration products of portland cement
Portland cement is the one of the main ingredients in the manufacture of many building materials include concrete composites. The phase composition of hydration products is controlled by means of XRD and DTA/TG analysis. Observations of phase changes and microstructure of maturing cement pastes can also be observed using scanning electron microscopy (SEM) techniques combined with chemical analy...
متن کاملInteraction of tartaric acid during hydration of Portland cement
Hydration of Ordinary Portland cement (OPC) in the presence of tartaric acid has been studied by using different techniques. Calorimetric studies have shown a rapid enhanced heat evolution within 5 min of hydration in presence of 1.0 wt% tartaric acid with a strong retardation of silicate phase hydration. DSC and X-ray diffraction studies have confirmed the formation of calcium tartarate hydrat...
متن کاملHydration Study of Ordinary Portland Cement in the Presence of Zinc Ions
Hydration products of Portland cement pastes, hydrated in water and in the presence of zinc ions were studied comparatively at different ages. Hydration products were studied by X ray diffractions (XRD) and infrared spectroscopy (IR). Although IR is not frequently used in cement chemistry, it evidenced a new phase Ca(Zn(OH) 3 ) 2 . 2H 2 O formed during cement hydration in the presence of zinc. ...
متن کاملHydration Study of Ordinary Portland Cement in the Presence of Lead(II) Oxide
The aim of this work was to investigate the effect of the addition of lead(II) oxide on hydration heat and specific conductivity of a CEM I Portland cement. The heat released during hydration was determined by differential microcalorimetry up to 48 hours of hydration and the specific conductivity by a digital conductometer. Thermogravimetric analysis was employed in the characterization of the ...
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ژورنال
عنوان ژورنال: Journal of the Franklin Institute
سال: 1914
ISSN: 0016-0032
DOI: 10.1016/s0016-0032(14)90279-4