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Ultrafine Grinding of Limestone with Sodium Polyacrylates as Additives in Ordinary Portland Cement Mortar
Author(s) -
Ohenoja Katja,
BreitungFaes Sandra,
Kinnunen Päivö,
Illikainen Mirja,
Saari Juha,
Kwade Arno,
Niinimäki Jouko
Publication year - 2014
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201300707
Subject(s) - grinding , portland cement , sodium polyacrylate , materials science , dispersity , cement , mortar , nano , chemical engineering , metallurgy , particle size , composite material , chemistry , polymer chemistry , organic chemistry , raw material , engineering
Abstract Sodium polyacrylates permit a higher solids concentration during grinding, reducing the resulting particle size and/or specific energy consumption. Their impact on fine and ultrafine grinding of limestone was studied. Sodium polyacrylate with a low polydispersity index was found to be the most effective grinding aid for limestone and consequently applied for further nano‐grinding experiments. Nano‐grinding was most energy‐efficient with the smallest grinding medium size. These ground nano‐sized CaCO 3 particles with sodium polyacrylate on the surface accelerated the hydration of ordinary Portland cement cement paste.