Behaviour of Ca(OH)2 in the presence of the set styrene-acrylate dispersion

Autor:	D. Frtalova, L. Števula, I. Janotka, J. Madejová
Rok vydání:	1996
Předmět:	Scanning electron microscope Stereochemistry Carbonation Analytical chemistry Infrared spectroscopy Building and Construction Styrene law.invention chemistry.chemical_compound chemistry law Phase (matter) Carbonate General Materials Science Crystallization Dispersion (chemistry)
Zdroj:	Cement and Concrete Research. 26:1727-1735
ISSN:	0008-8846
DOI:	10.1016/s0008-8846(96)00156-1
Popis:	The action of the saturated Ca(OH) 2 solution on the surface of the set styreneacrylate dispersion was studied by scanning electron microscope and infrared spectroscopy. The slices of the set dispersion were immersed into the saturated Ca(OH) 2 solution. Action in such conditions on and near to the set dispersion surface was investigated in comparison with that in the saturated Ca(OH) 2 solution. The obtained results indicate, that first spherical and globular Ca(OH) 2 particles arise in the form of long fibres and of cluster habits on the set dispersion surface. Ca(OH) 2 is converted continually to the carbonate phase. The carbonate crystallization proceeds first through the aragonite-like and lately through the calcium-like carbonate rise. It is supposed, that air voids formed in the set dispersion surface serve as the CO 2 -giving supplies, in which the carbonation proceeds preferentially compared to the Ca(OH) 2 Solution.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7a6d8ccc036ff7f0bc2232f326496c51 https://doi.org/10.1016/s0008-8846(96)00156-1 Zobrazit plný text záznamu Full Text from ScienceDirect