EFFECTIVENESS OF TRIETHANOLAMINE ON GRINDABILITY AND PROPERTIES OF PORTLAND CEMENT IN LABORATORY BALL AND VIBRATING DISC MILLS

An attempt was made to evaluate the effectiveness of one of the industrially most popular grinding aids, triethanolamine (TEA) on the grindability, setting and strength behaviour of Portland cement in laboratory ball and vibrating disc mills when added at the same amount of 0.06 wt%. The results sho...

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Published inCeramics (Praha) Vol. 58; no. 2; pp. 89 - 94
Main Authors Allahverdi, A, Babasafari, Z
Format Journal Article
LanguageEnglish
Published University of Chemistry and Technology, Prague 01.01.2014
Subjects
Ball mill
Cement
Compressive strength
Curing
Discs
Disks
Grindability
Grinding aid
Mills
Portland cements
Triethanolamine
Vibrating disk mill
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Summary:An attempt was made to evaluate the effectiveness of one of the industrially most popular grinding aids, triethanolamine (TEA) on the grindability, setting and strength behaviour of Portland cement in laboratory ball and vibrating disc mills when added at the same amount of 0.06 wt%. The results show that TEA is more effective in a ball mill than in a vibrating disc mill. It increases the Blaine specific surface area of mixtures of 95% clinker and 5% gypsum by 16 and 7.6% in ball and vibrating disc mills, respectively, compared to a reference test. The cement samples produced from the two mills were tested for their initial and final setting times, spread diameter as a consistency measure and compressive strengths after 3, 7 and 28 days of curing. In both mills, addition of TEA increases both initial and final setting times and decreases compressive strengths at 3-, 7- and 28-day curing ages. The effects, however, are more significant in a ball mill compared to a vibrating disc mill.
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ISSN:0862-5468
1804-5847