C. Shi et al., QUALITY ANALYSIS QUALITY-CONTROL, TESTS FOR FIELD STABILIZATION SOLIDIFICATION .1. DRY CEMENTING ADDITIVES, Waste management, 15(4), 1995, pp. 265-270
As part of a field validation study of their proposed protocol for sol
idified waste evaluation, which will correlate laboratory test results
with field behaviour, the Wastewater Technology Centre investigated t
he applicability of several rapid tests for quality analysis and contr
ol of the field solidified waste. A pilot-scale landfill was construct
ed and 63 m(3) solidified are furnace dust placed in it using a cement
ing system consisting of blast furnace slag, lime, silica fume and sod
ium metasilicate. The ground blast furnace slag, hydrated high calcium
lime and silica fume were pre-blended before being trucked to the hel
d site and the sodium metasilicate was added in the mixing water. Avai
lable lime index using the rapid sugar method (ASTM C-25) and measurem
ent of specific gravity were used to determine the effect of mixing pr
ocedures and transportation on the homogeneity of the blended dry addi
tives. Experimental results indicate that the rapid sugar method can g
ive an accurate analysis of lime content in the pre-blended additives.
There is a good linear relationship between the slag content and spec
ific gravity because the lime and silica fume have a similar specific
gravity. However, the agglomeration of the blended additives affects t
he accuracy and precision of the method.