Journal of thermal analysis

, Volume 33, Issue 4, pp 1147–1151 | Cite as

Investigation of concrete additives by evolved gas analysis

  • T. Gál
  • G. Pokol
  • L. Leisztner
  • S. Gál
Organic Chemistry, Polymers

Abstract

An evolved gas analysis method measuring the organic gases and vapours was applied in the investigation of concrete additives. Several commercial superplasticizers and solid cement mortars containing one of them in different concentrations were measured. EGA curves offer some information for the identification of additives, however, the thermal behaviour of the additives in the substantial form and in the mortar is different. The area under the EGA curve and characteristic intensities of the signal may be applied in the quantitative determination of the additives in cement mortars.

Keywords

Polymer Physical Chemistry Inorganic Chemistry Thermal Behaviour Quantitative Determination 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Zusammenfassung

Eine thermo-gasanalytische (EGA-) Methode zur Messung organischer Gase und Dämpfe wurde zur Untersuchung von Betonzusätzen verwendet. Einige kommerzielle Superverflüssiger sowie erhärtete Zementmörtel, die einen derselben in unterschiedlichen Konzentrationen enthalten, wurden untersucht. Die EGA-Kurven bieten einige Informationen zum Nachweis der Zusätze, deren Verhalten in substanzieller Form und im Mörtel jedoch differiert. Die Fläche unter dem EGA-Effekt und charakteristische Intensitäten des EGA-Signals können zur quantitativen Bestimmung der Zusätze im erhärteten Zement genutzt werden.

РЕжУМЕ

Дль ИсслЕДОВАНИь РАж лИЧНых ДОБАВОк-пРИсА ДОк Был ИспОльжОВАН МЕтО Д АНАлИжА ВыДЕльУЩЕг Ось гАжА (АВг). БылИ ИжМЕРЕН ы НЕскОлькО пРОДАжНы х плАстИФИкАтОРОВ И тВ ЕРДых цЕМЕНтНых РАстВОРОВ, сОДЕРжАЩИ х В РАжлИЧНОИ кОНцЕНт РАцИИ ОДИН Иж плАстИФИкАтОРОВ. к РИВыЕ АВг ДАУт НЕкОтОРУУ ИН ФОРМАцИУ ОтНОсИтЕль НО ИДЕНтИФИкАцИИ ДОБАВ Ок. ОДНАкО, тЕРМИЧЕскО Е пОВЕДЕНИЕ ДОБАВОк В И х ИсхОДНОИ ФОРМЕ И В ст РОИтЕльНых РАстВОРАх сОВЕРшЕНН О РАжлИЧНОЕ. плОЩАДь кРИВОИ АВг И х АРАктЕРНыЕ ИНтЕНсИВ НОстИ сИгНАлА МОгУт Быть Ис пОльжОВАНы Дль кОлИЧ ЕстВЕННОгО ОпРЕДЕлЕНИь ДОБАВОк В цЕМЕНтНых РАстВОРА х.

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Copyright information

© Wiley Heyden Ltd., Chichester and Akadémiai Kiadó, Budapest 1988

Authors and Affiliations

  • T. Gál
    • 1
  • G. Pokol
    • 2
    • 3
  • L. Leisztner
    • 1
  • S. Gál
    • 2
    • 3
  1. 1.Institute of Forensic ScienceBudapest
  2. 2.Institute for General and Analytical ChemistryTechnical University of BudapestBudapestHungary
  3. 3.Res. Group for Technical Chemical Analysis of the Hungarian Academy of SciencesBudapestHungary

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