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Y. T151't~G RESli(.TS <br />5Af General <br />The follgwing sections provide a summary of the results of labonrory testing conducted on <br />the demonstrtttign SCB backfill ntix design. <br />5.02 Soil-Cement-Bentonite i4fix Design <br />5.03 Density <br />The wet density of the SCB mix design is provided in Table V. The wet density of the mix <br />was recorded as [08 pcf. <br />5.04 Perme3bitity <br />The result of the permeability test is provided in Table V, The permeability of [he mix was <br />recorded as 5.0 x t0~ centimeters per second (cmtsec). The mix design mee[s the <br />engineering criteria for a minimum permeability of 5.0 x 10'' cm/sec. <br />5.05 Unconfined Compressive Strength <br />The results of the unconfined compressive strength tests on cast cylinders of backftlt are <br />I provided in Table V. The unconfined compressive strength of [he mix design after 7 days of <br />curing was 38 pounds per square inch (psi} and after 14 days of cunng was d$ psi. The 28- <br />day strength Witt be provided as an addendum tq this report. The mix design appears [hat it <br />will suf!"icient meet the performance criteria of 30 [0 106 psi for unconfined compressive <br />strem_th at the 28 davs curing. <br />9j+ .~ i. NR~ p< <T'.. i> Lu elc~ L`. i•c ?-i 6eI Dc _a. ~;mim- m nvuin de, n; rA0A 't: i'~lR I J.w <br />