Quantitative Backscattered Electron Analysis Techniques for Cement-Based Materials

17. COSA Tl CODES 18. SUBJECT TER~S (Continu • on ~ven • if ~Wt".-u.a,.;,lVI irl•,tifv bv block num.b.r) FIELD GROUP SUB-GROUP backscattered electron imaging, backscattering coef-ficient, calibration, cement paste,. cracking,. epoxy impregnation, gray levels, hydration, image analysis, 19. ABSTRACT ( ~ on......,.. if- ''Y MWI identify bp- numboq Backscattered electron imaging and x-ray microanalysis are used to identify phases within polished epoxy impregnated cement paste sections. A silicon-magnesium standard is applied and an objective procedure is developed for the calibration of the scanning electron microscope and the image analysis system, so that the L;tensity of individual phases in cement paste appears within reproducible ranges when using