Early Hydration of Calcium Aluminate Cement Blended with Spent FCC Catalyst at Two Temperatures

Barbara Pacewska , Mariola Nowacka , Marius Aleknevičius , Valentin Antonovič

Abstract

The early hydration (up to 24h) of calcium aluminate cement (Al2O3 min. 40%) blended with spent FCC catalyst at two temperatures i.e. 10 ̊C and 25 ̊C was investigated. The calorimetric measurements were used to study cement pastes with constant ratio of water/binder = 0.5 (binder = cement + addition) and containing 0, 5 and 25% mass of mineral waste as replacement part of cement. In addition the kind of created products using X-ray diffraction method was identified. On the basis of obtained results it was found that the influence of spent FCC catalyst on early hydration of calcium aluminate cement strictly depends on temperature of hydration process. At the temperature of 25 ̊C this waste aluminosilicate accelerates setting and hardening of cement, but at the temperature of 10 ̊C acts as retarder. These changes are realized by variation of duration of the induction period and the bigger content of FBCC the bigger the effect is regardless of the temperature of hydration. The presence of this mineral waste causes a minor effect on the crystalline hydrates produced after 1 day of hardening although it clearly increases degree of CA hydration.
Author Barbara Pacewska (FCEMP / IC)
Barbara Pacewska,,
- The Institute of Chemistry
, Mariola Nowacka (FCEMP / IC)
Mariola Nowacka,,
- The Institute of Chemistry
, Marius Aleknevičius - [Vilniaus Gedimino technikos universitetas]
Marius Aleknevičius ,,
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, Valentin Antonovič - [Vilniaus Gedimino technikos universitetas]
Valentin Antonovič,,
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Journal seriesProcedia Engineering, ISSN 1877-7058
Issue year2013
Vol57
Pages844-850
Publication size in sheets0.5
Conference11th International Conference on Modern Building Materials, Structures and Techniques, 16-05-2013 - 17-05-2013, Wilno, Litwa
Keywords in English calcium aluminate cement; spent FCC catalyst; calorimetry measurements; X-ray diffraction; temperature
DOIDOI:10.1016/j.proeng.2013.04.107
URL http://www.sciencedirect.com/science/article/pii/S1877705813008400
Languageen angielski
Score (nominal)15
Score sourceconferenceIndex
ScoreMinisterial score = 10.0, 25-12-2019, ArticleFromJournalAndMatConfByConferenceseries
Ministerial score (2013-2016) = 15.0, 25-12-2019, ArticleFromJournalAndMatConfByConferenceseries
Publication indicators Scopus Citations = 16; WoS Citations = 10; GS Citations = 6.0
Citation count*6 (2016-01-24)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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