View Document Here - Hanford Site

^- -'^
WHC-SD-W100-TI-003 Rev. 0
-----mai-erial,- TaYle 4-4 suarfzes the formulations that were used to prepare the
waste form specimens.
Table 4-4. Formulation Parameters.
Formulation parameter Type 1 Type 2 Type 3 Type 4
Waste/binder ratio, ( kg/kg) 4/2 3/3 4/2 3/2
Binder type 411-45 470-45 411-45 470-45
Catalyst dose ( wt% of binder) 2.5_ 7.5 2.5 5.0
Promoter dose ( wt% of binder) 0.1 2.0 0.1 1.0
Total mixing time ( minutes) 25 8.5 8.5 10.5
Peak-m}xing power (W) ---- 45 12.3 -9.9 13.9
Peak exotherm (°C) 38.2 70 57.5 63
Peak exotherm time ( minutes) 75 30 120 25
SPECIMEN PREPARATION
Test specimens were prepared from waste surrogates at the Stock Equipment
Company laboratories. Batch size was approximately 4.7 L (1.25 gal).
A variable speed laboratory mixer with propeller blade operating at 1,800 rpm
was used. Each set of specimens was made from a single batch and poured into
cylindrical molds. The tests described in Section 2.0 were performed on the
specimens. Replicate tests were performed as described in Table 4-5.
--- Table 4-5. Repiicate Specimens Tested.
Performance test Number of replicates tested
Compressive strength 10 @ 5-day cure, 10 @ 90-day cure
Biodegradation 3
Radiation stability 3
Leachability/immersion 6 spiked, 6 unspiked
7hermai cycling 3
I Toxicity characteristic 2 + 1@ independent lab
4-10
i1
-syr