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One measure ( 2 5 p t s ) It is desired to reduce the density of a Class A cement to 1 2 .

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(25pts) It is desired to reduce the density of a Class A cement to 12.8lbmgal by adding bentonite. Using the water requirements for Class A cement and bentonite given in Table 4.5, compute the weight of bentonite that should be blended with each sack of cement. Compute the yield of the slurry. What is the "percent mix" of the slurry?
Note: SG of cement=2.65; SG of bentonite=3.14; 1 sack of cement=94 lbm;
\table[[\table[[TABLE 4.5-WATER REQUIREMENTS OF CEMENTING MATERIALS],[(Halliburton 2001)]]],[Material,Minimum gal/hbm,Maximum gallbm],[API Class A cement,0.05532,0.05532],[API Class C cement,0.06702,0.06702],[API Class G cement,0.05319,0.05319],[API Class H cement,0.04574,0.04574],[Ciment Fondu,0.04787,0.04787],[Activated Charcoal,none,none],[Gilsonite,0.04,0.04],[Calcium Chloride,none,none],[Potassium Chloride,none,none],[Sodium Chloride,none,none],[Latex,0.0,0.8? sack],[Attapulgite,0.69,0.69],[Barite,0.0264,0.0264],[Bentonite,0.69,0.69],[Calcium Carbonate,none,none],[Calcium Chloride (dry),none,none],[Hydrated Lime,0.153,0.153],[Hematite,0.0036,0.0036],[Perlite (0 psi),0.5,0.5],[Sand,none,none],[Silica Flour,0.049,0.049]]
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