Cálculos Cálculos de Diseño Diseño de Lechadas Ing. Sigrid Escalona
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. Cemento H + 0,15%CF + 0,30%D + Agua Densidad = 16,2 lb/gal
Cemento H
94
3,14
0,03816
CF
50
1,31
0,09147
D
55
1,57
0,07633
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Calculemos el peso y volumen para el cemento, aditivos y agua. Peso = % aditivo * peso del saco de cemento Vol = Masa * Vol. Vol. Abs Abs
Cemento H
94
0,03816
3,5870
CF
0,141
0,09147
0,01290
D
0 ,2 8 2
0,07633
0,02153
Agua
8 ,34
-
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=
=
,, ,
=16,2 /
Despejamos X de la ecuación y obtenemos el Requerimiento:
Rendimiento = 3,6198 + X = 3,6198 + 4,5522 = 8,1720 8,1720 gal/saco El Rendimiento Rendimiento debe estar expresado en e n pie³/saco, por lo que se realiza la conversión de gal/saco a pie³/saco. 1 gal = 0,13368 pie³
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Cálculo del Porcentaje de agua (% Agua) % =
% =
8,34 × 94
8,34 × 4,5522 94
× 100
× 100 100 = 40,39 40,39% %
% = 40,39%
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Para calcular los gramos de cemento (g cmto) a pesar en el laboratorio se usa la fórmula:
=
=
=
904
,
= 827,513
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Para calcular los gramos de aditivos a pesar en el laboratorio se usa el porcentaje de aditivo en el diseño de lechada en base al peso de cemento.
= × % %
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Para calcular la cantidad de sacos de cemento a usar en campo se usa la fórmula:
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Para calcular la cantidad de aditivos a usar en el campo se usa el porcentaje de aditivo en el diseño de lechada en base bas e al peso de cemento (en libras).
= × % % = × 94
