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 specificgravity (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 251yd 280 270 250 240 225 180 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
6
Embed
Cement: Type...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
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
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.
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.