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Titanium‐Bearing Dicalcium Silicates from Rice Hull Ash: Synthesis and Properties
Author(s) -
Romano Jonatas Silva,
Rodrigues Flávio Aparecido
Publication year - 2007
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2007.01663.x
Subject(s) - titanium , materials science , calcination , silicate , portland cement , mineralogy , chemical engineering , reagent , mortar , nuclear chemistry , metallurgy , cement , composite material , chemistry , organic chemistry , engineering , catalysis
This work describes the synthesis of dicalcium silicates doped with titanium. Rice hull ash was used as the source of silica. Starting reagents (SiO 2 , CaO, and TiO 2 ) were used in stoichiometric proportion in order to mantain a (Ca+Ti)/Si ratio=2. Aqueous dispersions were prepared and submitted to an ultrasonic bath for 60 min. After drying, the solids were calcined at 800°C. Chemical analyses were performed by X‐ray diffraction and infrared spectroscopy. Dicalcium silicates doped with 5% of titanium were obtained. Overall, the performance of mortars containing 20% of dicalcium silicate doped with titanium was similar to mortars prepared from portland cement.