TY - JOUR
T1 - Carbonation of high-calcium lime mortars containing cactus mucilage as additive
T2 - a spectroscopic approach
AU - León-Martínez, F. M.
AU - Cano-Barrita, P. F.de J.
AU - Castellanos, F.
AU - Luna-Vicente, K. B.
AU - Ramírez-Arellanes, S.
AU - Gómez-Yáñez, C.
N1 - Publisher Copyright:
© 2020, Springer Science+Business Media, LLC, part of Springer Nature.
PY - 2021/2
Y1 - 2021/2
N2 - Abstract: Lime mortar is one of the oldest building materials. In Mexico, ingredients added to it to enhance its properties may include cactus mucilage, among others. We have evaluated the effect of adding, at two different concentrations, mucilage from Opuntia ficus-indica (prickly pear), Acanthocereous tetragonus (fairy castle cactus), and Hylocereus undatus (pitahaya or dragon fruit) in the accelerated carbonation of hydrated lime. The carbonation kinetics were followed by spectroscopic techniques such as Fourier transform mid-infrared (FTIR) spectroscopy, X-ray diffraction (XRD) spectroscopy, energy-dispersive X-ray (EDX) spectroscopy, and scanning electron microscopy (SEM). The results showed that mucilage promoted carbonation, functioning as a positive catalyst. Analysis of the infrared (IR) absorption corresponding to the in-plane asymmetric stretching v3 of the CO32- anion indicated that the carbonation rate increased with the percentage of mucilage, being directly dependent on the concentration of Opuntia and Acanthocereous mucilage at both concentration levels tested. SEM observations confirmed that the inclusion of mucilage promoted the creation of the aragonite polymorph of calcium carbonate (CaCO3). Graphical abstract: [Figure not available: see fulltext.].
AB - Abstract: Lime mortar is one of the oldest building materials. In Mexico, ingredients added to it to enhance its properties may include cactus mucilage, among others. We have evaluated the effect of adding, at two different concentrations, mucilage from Opuntia ficus-indica (prickly pear), Acanthocereous tetragonus (fairy castle cactus), and Hylocereus undatus (pitahaya or dragon fruit) in the accelerated carbonation of hydrated lime. The carbonation kinetics were followed by spectroscopic techniques such as Fourier transform mid-infrared (FTIR) spectroscopy, X-ray diffraction (XRD) spectroscopy, energy-dispersive X-ray (EDX) spectroscopy, and scanning electron microscopy (SEM). The results showed that mucilage promoted carbonation, functioning as a positive catalyst. Analysis of the infrared (IR) absorption corresponding to the in-plane asymmetric stretching v3 of the CO32- anion indicated that the carbonation rate increased with the percentage of mucilage, being directly dependent on the concentration of Opuntia and Acanthocereous mucilage at both concentration levels tested. SEM observations confirmed that the inclusion of mucilage promoted the creation of the aragonite polymorph of calcium carbonate (CaCO3). Graphical abstract: [Figure not available: see fulltext.].
UR - http://www.scopus.com/inward/record.url?scp=85095710057&partnerID=8YFLogxK
U2 - 10.1007/s10853-020-05514-5
DO - 10.1007/s10853-020-05514-5
M3 - Artículo
AN - SCOPUS:85095710057
SN - 0022-2461
VL - 56
SP - 3778
EP - 3789
JO - Journal of Materials Science
JF - Journal of Materials Science
IS - 5
ER -