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Structure and Reactivity of Chromium‐Doped Tricalcium Silicate
Author(s) -
FIERENS PAUL,
VERHAEGEN JEANPIERRE
Publication year - 1972
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.1151-2916.1972.tb11292.x
Subject(s) - reactivity (psychology) , silicate , chromium , doping , materials science , analytical chemistry (journal) , crystal (programming language) , conductivity , activation energy , mineralogy , chemistry , inorganic chemistry , metallurgy , environmental chemistry , medicine , alternative medicine , optoelectronics , organic chemistry , pathology , computer science , programming language
The correlation between the structure and reactivity of Cr‐doped tricalcium silicate was studied by ir spectrophotometry and X‐ray diffractometry. A very sensitive method of detection of defects (thermostimulated exoelectron emission) allowed differentiation of three types of electron traps; the activation energy for the third trap was 0.8 eV. These crystal defects seem to be associated with sites of high Cr concentration (disordered structure) which may also be responsible for the increased reactivity of the doped phases. The reactivity of the system tricalcium silicate‐H 2 O ( w/c =0.6) was studied by an electrical conductometric method. Curves of conductivity vs time for tricalcium silicate with varied Cr concentrations indicated significant differences in hydration kinetics.