The effect of elevated curing temperatures on high ye'elimite calcium sulfoaluminate cement mortars
This study investigated the material properties and hydration characteristics of calcium sulfoaluminate cement (CSA) based mortars cured under 3 different initial curing temperatures. Two CSA cements with different M-values were selected. Obtained experimental results of mechanical properties, dimensional stability, and heat release were explained by hydration characteristics from X-ray diffraction, thermal gravimetric analysis, porosimetry, and thermodynamic modeling. Decomposition of ettringite decreased compressive strength but reformation of ettringite after additional curing at 30 °C helped to recover the strength in CSA cement with a high amount of calcium sulfate. CSA cement with a low amount of calcium sulfate which was designed to predominantly have monosulfate as the main hydration product, showed increased 1-day strength after higher temperature curing but this occurred was at the expense of decreased 28-day strength.
Digital Object Identifier (DOI)
Jeong, Yeonung; Hargis, Craig W.; Kang, Hyunuk; Chun, Sung Chul; and Moon, Juhyuk, "The effect of elevated curing temperatures on high ye'elimite calcium sulfoaluminate cement mortars" (2019). UNF Faculty Publications. 1000.