Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 231, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2019.117139
Keywords
Calorimetry; Hydration kinetics; SEM-EDX; Thermal analysis; X-ray diffraction; Cement by-pass dust
Categories
Funding
- National Center for Research and Development (Polish NCBR) [TECHMATSTRATEG1/349326/9/NCBR/2017]
Ask authors/readers for more resources
Cement kiln dusts (CKD) generated during the production of Portland cement clinker differ markedly in composition and, hence, in properties. These dusts are commonly used as an addition to cement. In this article the way in which the selected dusts obtained from the cement kiln bypass system (CBPD) react with water and the phenomena accompanying this process at early stage are discussed. For this purpose, the kinetics of hydration was investigated using the calorimetric method and volume change observations. Phase and microstructural changes were investigated by X-ray diffraction (XRD), thermogravimetry (TG) and scanning electron microscopy (SEM). It was found that the CBPD hydration process is primarily associated with the presence of free lime. It is characterized by a significant initial heat emission, which is accompanied by swelling the paste as a result of calcium hydroxide and calcium chloride salts formation. (C) 2019 The Author(s). Published by Elsevier Ltd.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available