Abstracts Book - IMRC 2018

• SF5-O047
ADDITIONS OF TiO2 NANOPARTICLES IN ALKALI ACTIVATED
CEMENTS
Erika Agustina Llano Guerrero 1 , Lauren Yolanda Gomez Zamorano 1
1 Universidad Autónoma de Nuevo León, Programa Doctoral en Ingeniería de Materiales,
Facultad de ingeniería mecánica y eléctrica, Mexico.
Alkaline activated cements also known as geopolymers are a new class of
materials that receive considerable attention due to their good physical and
mechanical properties, good resistance to acid attack and low energy
consumption during processing which requires up to 60% less compared to the
energy needed to manufacture ordinary portland cement. In this work we
studied the effect of additions of TiO 2 nanoparticles in alkali activated cements
based metakaolin and ground granulated blast furnace slag to establish their
effect on mechanical and photocatalytic properties (as self-cleaning material).
Geopolymer pastes were characterized by scanning electron microscopy, X-ray
diffraction and Fourier Transform Infrared Spectroscopy (FT-IR). In addition, its
compressive strength at 28 days was evaluated. The characteristic bands of
aluminosilicate were observed by FT-IR, which evidenced the geopolymerization
process. Self-cleaning property was evaluating by degradation of rhodamine b
under artificial UV. The addition of nanoparticles increased their mechanical
resistance, and self-cleaning properties were also observed.
Keywords: Nanoparticles, Alkali activated materials, Photocatalysis
Presenting authors email: erikallano89@gmail.com