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Beitrag Zur Beurteilung Des Zementsteingefuges in Abhangigkeit Von Der Mahlfeinheit Dem Wasserzementwert Und Der Hydratationstemperatur
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Beitrag Zur Beurteilung Des Zementsteingefuges in Abhangigkeit Von Der Mahlfeinheit Dem Wasserzementwert Und Der Hydratationstemperatur (Paperback)

£41.99
Usually despatched within 3 weeks.

Synopsis

DIe blslang veroffenthchten Untersuchungen sprechen dafiir, da/3 dIe Hydra- tahon der vier Klinkermineralien TricalclUmsillkat, DlcalclUmsllikat, Tn- calciumalummat und Tetracalciumaluminatferrlt 1m erhartenden Zement- stem annahernd gleich fortschreitet. Auf Jeden Fall 1St dIe ReaktlOnsge- schwmdlgkelt nlcht derart unterschiedllch, Wle es von den Klmkerphasen bekannt 1st, wenn Jede ftir slch hydratisiert wird. Anzelchen emer unter- schledhch gro/3en Hydratationsgeschwmdlgkelt der Klmkerphasen wurden nur bel sehr C S-relchen Portlandzementen festgestellt (36). DIe Propor- tlOnalltat zWisdben physlkal1schen bzw. chemlschen Elgenschaften und dem gebundenen Wasser erharten dIe Vorstellung, da/3, sobald das Anfangssta- dlUm der HydratatlOn abgeschlossen 1st, mfolge der gleichen HydratatlOns- geschwmdlgkelt stets das glelche Gemlsch von Hydratphasen geblldet wlrd. Allerdmgs konnte m der Llteraturtibersicht gezelgt werden, da/3 dIe emzel- nen Mogllchkelten zur Bestlmmung des HydratatlOnsfortschnttes mIt emer gewlssen Problematlk behaftet smd. Bel der ubhchen Methode den HydratatlOnsgrad uber dIe Rontgenbeugung zu ermltteln, bestehen dIe Schwlengkeiten vorwlegend darin, da/3 slch dIe KonzentratlOnsverhaltmsse der Proben unterschelden und slch dIe Reflexe verschledener Bestandtelle tiberlagern konnen. DIe mdlrekten Methoden smd mtegrale Verfahren. Sle wtirden nur dann zu- verlasslge zeltunabhanglge Aussagen tiber den HydratatlOnsgrad llefern, wenn dIe ReaktlOnsprodukte wahrend des ganzen ReaktlOnsverlaufs die glel- chen bheben. Wahrend der frtihen HydratatlOn treten Jedoch Wle oben er- wahnt und spater naher behandelt (Abschmtt 3.2.6) andere Produkte auf als m den spateren Stadlen.

Science & MathematicsMathematicsApplied mathematicsScience & MathematicsScience: general issuesScientific standardsMensuration & systems of measurementTechnicalElectronics & communications engineeringElectronics engineeringAutomatic control engineering Publisher: Springer Fachmedien Wiesbaden Publication Date: 01/01/1973 ISBN-13: 9783531023304  Details: Type: Paperback Format: Books
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