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ACI Mix Design Example #5
Consider the following example: The 28-day.compressive strength shoutd be-60p0 psi. The slump should be betweén 1 and 2 in) The maximum aggregate size should not exceed 0.5 in. Exposure conditions are mild.
The properties of the materials are as follows:
Cement: Type l, specific gravity = 3.15
Coarse Aggregate: Bulk specific gravity (SSD) = 2.65; absorption capacity = 0.5%; dry-rodded unit weight = 98 lb./ft surface moisture = -0.2%
Fine Aggregate: Bulk specific gravity (SSD) = 2.60; absorption capacity = 1.1%; fineness modulus = 2.60; surface moisture = 0.5%
Maximum aggregate size (in.) Slumpin) 0.375 0.5 0.75 1.5 3 6
1 to 2 350 335 315 340-
300 325
275 260 220 190 3 to 4 385 365 300 285 245 210 6 to 7 410 385 360 340 315 300 270
Air Content 3.0% 2.5% 2.0% 0.2% 1.5% 1.0% 0.5% 0.3%
WATeR Maximum aggregate size (in.)
Slumpin) Tto 2
0.375 305
0-5 295
.75 1.5 2 3
251yd280 270 250 240 225 180 3 to 4 340 325 305 295 275 265 250 200 6 to 7 365 345 325 310 290 280 270
Air Content 4.0% 5.5%
Mild 4.5% 3.5% 3.0% 2.5% 2.0% 1.5% 1.0%
AIR Moderate 6.0% 5.0% 4.5% 4.5% 4.0% 3.5% 3.0% Extreme 7.5% 7.0% 6.0% 6.0% 5.5% 5.0% 4.0% .5%
4
ACI Mix Design Example #5
Consider the following example Ihe 28 day compressive strength should bye 6,000 psi. The slump should be between 1 and 2 in. The
maximum aggregate size should not exceed 0.5 in. Exposure conditions are mild The properties of the materials are as follows:
Cement: Type 1, specific gravity =3.15 Coarse Aggregate: Bulk specific gravity (SsD) = 2.65; absorption capacity = 0.5%, dry-rodded unit weight 98 lb./ft.3
surtace moisture = -0.2%
Fine Aggregate: Bulk specific gravity (SSD) = 2.60; absorption capacity = 1.1%; fineness modulus = 2.60;
surface moisture = 0.5%
|28-day Compressive Non-AE AE
Strength (psi) wc o32
2,000 0.82 0.74
3,000 4,000
0.68 0.59 215 14 0.57 0.48 5,000 6,000
CeMENT = 0.48 0.40
0.32 O32 0.41
7,000 0.33
= 2z
ACI Mix Design Example #5
Consider the following example: The 28-day compressive strength should be 6,000 psi. The slump should be between 1 and 2 in. The
maximum aggregate size should not exceed 0.5 in.Exposure conditions are mild.
The properties of the materials are as follows:
Cement: Type l, specific gravity = 3.15
Coarse Aggregate: Bulk specific gravity (SSD) = 2.65; absorption capacity = 0.59%; dry-rodded unit weight = 98 lb./ft.3
surface moisture = -0.2%
Fine Aggregate: Bulk specific gravity (SSD) = 2.60; absorption capacity = 1.19%6; fineness modulug = 2.60;
surface moisture = 0.5%
Fineness Modulus
2.6 0.48 0.57
Max Aggregate (in.) 2.4 2.5 2.7 2.8 2.9 3
0.375 0.50 0.47 0.46 0.45 0.44 0.49 0.58 0.500 0.59 0. .56 0.55 0.54 0.53
0.750 0.66 0.65 0.64 0.63 0.62 0.61 0.60
O57 R S7% 1.000 0.71 0.70 0.69 0.68 0.67 0.66 0.65
1.500 0.75 0.74 0.73 0.72 0.71 0.70 .69
2.000 0.78 0.77 0.76 0.75 0.74 0.73 0.72
3.000 0.82 0.81 0.80 0.79 0.78 0.77 0.76
6.000 0.8 7 0.86 0.85 0.84 0.83 0.82 0.81
o57 (27 A4) = IS,3aH7%8*
15.31 16 1b/- 1,5o8 b/4d
ACI Mix Design Example #5
Consider the following example: The 28-day compressive strength should be 6,000 psi. The slump should be between 1 and 2 in. The
maximum aggregate size should not exceed 0.5 in. Exposure conditions are mild.
The properties of the materials are as follows:
Cement: Type I, specific gravity 3.15
Coarse Aggregate: Bulk specific gravity (SSDY=2.65; bsorption capacity = 0.5%; dry-rodded unit weight = 98 Ib./ft.3
surface moisture = -0.2%
Fine AEeregate: Bulk specific gravity (SSDY= 2.60; apsorption capacity = 1.1%; fineness modulus = 2.60;
surface moisture = 0.5%
water (ft) 2a5 a4 1/4 = 4.73 4d Cement (ft) 22 18/315 x eZ4 1/4=4cA Z
Coarse Aggregate (t)5BY/2.5roZ4 |l/4*] =q1Z H78
Air (ft) 4 27A = 1.t43 219.62 t7% 27 f-162A74* - 738N743*
FA- 7.3etx7.oOx 624 t = 1,117 d
ACI Mix Design Example #5
Consider the following example: The 28-day compressive strength should be 6,000 psi. The slump should be between 1 and 2 in. The
maximum aggregate size should not exceed 0.5 in. Exposure conditions are mild.
The properties of the materials are as followsS:
Cement: Type l, specific gravity = 3.15
Coarse Aggregate: Bulk._pecific gravity (SSD) = 2.65; absorption capacity= 0.5%; ¥ry-rodded unit weight = 98 lb./ft.3
surface moisture= -0.2%
Fine Aggregate: Bulkspecific gravity (SSD) = 2.60; absorption capacity= 1.1%, fineness modulus = 2.660;
surface moisture- 0.5%
Weightstock Pile =Weightg(1+ MC) CA1,5c8 (1+.00s) = 1513 yd
FA ,/97 /4 (1 +Ool) = 1,2lo 1/4d
AWeightwater = Weightoo (SM)
CA 1,508 1L*(-o.coz) = - 3.0z ll/1d FA71,17 1b/4*( (o.os)- 511 6/yd
215 -(-3celb)-511
Zz L/ya* Adjusted Weightwater = WeightWater AWeightnater
ACI Mix Design Example #5
Consider the following example: The 28-day compresive strength should be 6,000 psi. The slump should be between 1 and 2 in. The maximum aggregate size should not exceed 0.5 in. Exposure conditions are mild.
The properties of the materials are as follows:
Cement: Type l, specific gravity =3.15
Coarse Aggregate: Bulk specific gravity (SSD) = 2.65; absorption capacity = 0.5%; dry-rodded unit weight 98 lb./ft.3 surface moisture = -0.2%
Fine Aggregate: Bulk specific gravity (SSD) = 2.60; absorption capacity = 1.1%; fineness modulus = 2.60;
surface moisture 0.5%
WATER
922 1b/yd CEMENT
C. AGGEGATE : 1,513 1b/yd
F. AGGRe4ATE : 1,Zi L/yd*
3,145 1b/y
4% 1L/y
