Compressive strength development of calcium aluminate cement-GGBFS blends

The compressive strength development of calcium aluminate cement (CAC) and ground granulated blast furnace slag (GGBFS) blends that were subjected to different curing regimes are investigated. The blends had GGBFS/CAC ratios between 0% and 80%, by mass. Mortar specimens, prepared with a water:binder:sand ratio of 1:2:6, were subjected to seven different curing regimes and the compressive strengths were monitored up to 210 days. In order to understand the effect of temperature on compressive strength development, XRD analyses were also conducted on paste specimens of CAC-GGBFS blends at 28 and 210 days. The experimental analysis results revealed that in CAC-GGBFS combinations, particularly where GGBFS was the main constituent, the formation of stable straetlingite (C(2)ASH(8)) instead of calcium aluminate hydrates hindered the unwanted conversion reactions.


Influence of ground perlite on the hydration and strength development of calcium aluminate cement mortars
Şengül, Kemal; Erdoğan, Sinan Turhan (Elsevier BV, 2021-01-10)
© 2020 Elsevier LtdCalcium aluminate cement (CAC) concretes are desirable owing to their rapid strength development and resistance to high temperatures, sulfates and acids. They suffer two drawbacks, however, high cost and strength loss due to conversion of water-rich hydration products to more stable structures, resulting in a drop in strength. Although its rate is dependent on temperature and moisture, the conversion process is thermodynamically inevitable but can be prevented by adding sufficient quantit...
Sulfate resistance of cementitious systems with mineral additives
Dilek, Faruk Tuncer; Tokyay, Mustafa; Department of Civil Engineering (2002)
Sulfate resistance of mortars containing limestone, trass, granulated blast furnace slag and fly ash has been evaluated using ASTM C 1012 test procedure. Prismatic and cubic mortar specimens have been stored in concentrated sodium sulfate and a mixture of sodium sulfate + magnesium sulfate solutions. Relative deterioration of the specimens has been determined by length change, weight change, strength and visual examination. From similar mixtures, cement paste specimens were prepared and structure/morphology...
Electrochemical production of molybdenum refractory metal powders
Akpınar, Bengisu; Karakaya, İshak; Department of Metallurgical and Materials Engineering (2019)
Molybdenum (Mo) is a refractory metal and mostly used as an alloying agent in cast iron, steels and superalloys to enhance hardenability, strength, toughness and corrosion resistance. It also finds other uses either in the form of a pure metal or an element in, for example, lubricants and catalysts. Traditional metal production methods are not suitable for molybdenum because pure molybdenum has a very high melting point and tends to be oxidized at low temperatures. Hydrogen reduction of molybdenum oxide is ...
Polylactide/organically modified montmorillonite composite fibers
Ozdemir, Esra; Hacaloğlu, Jale (2017-03-01)
Direct pyrolysis mass spectrometry technique was applied to investigate the characteristics of polylactide, (PLA) nanofibers containing organically modified montmorillonites, Cloisite 15A, (C15A) Cloisite 20A, (C20A) and Cloisite 30B, (GOB) prepared by electrospinning. As the amount of Cloisite present in the composites was increased, the fiber diameters became slightly narrower compared to neat PLA fiber due to the presence of quaternary ammonium salt as organic modifier increasing electrical conductivity....
Thermal Degradation of Polylactide and Its Electrospun Fiber
Ozdemir, Esra; Hacaloğlu, Jale (2016-01-01)
Thermal degradations of poly(lactic acid), (PLA) and its fiber were studied via direct pyrolysis mass spectrometry. As the amount of PLA pyrolyzed was increased the relative yields of protonated and cyclic oligomers were increased indicating that inter-molecular interactions were promoted. Hydrolysis reactions caused significant decrease in the relative yields of high mass products. Intermolecular trans-esterifications were more effective during the pyrolysis of PLA fiber. On the other hand, PLA fiber showe...
Citation Formats
O. Kirca, İ. Ö. Yaman, and M. Tokyay, “Compressive strength development of calcium aluminate cement-GGBFS blends,” CEMENT & CONCRETE COMPOSITES, pp. 163–170, 2013, Accessed: 00, 2020. [Online]. Available: