Answer Happy

materials lab
determination of hardened properties of concrete
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unit weight, compressive strength
28-day load vs dial gauge reading Guage length (in) = 4 Sample 10 - . Sample 11 Sample 12 Load, lb 0 2000 4000 6000 8000 10000 12000 14000 16000 18000 20000 22000 24000 26000 28000 30000 32000 34000 Deflection (in) 0 0.001 0.0025 0.004 0.005 0.0075 0.0095 0.014 0.0165 0.02 0.022 0.0245 0.03 0.0335 0.038 0.0425 0.049 0.055 Load, lb 0 2000 4000 6000 8000 10000 12000 14000 16000 18000 20000 22000 24000 26000 28000 30000 32000 34000 Deflection (in) 0 0 0.0005 0.001 0.002 0.0025 0.003 0.0035 0.004 0.005 0.0055 0.0065 0.007 0.009 0.0115 0.014 0.018 0.0225 Load, lb 0 2000 4000 6000 8000 10000 12000 14000 16000 18000 20000 22000 24000 26000 28000 30000 32000 34000 Deflection (in) 0 0 0.001 0.003 0.005 0.01 0.0125 0.0155 0.018 0.0195 0.022 0.0265 0.029 0.034 0.0395 0.043 0.0475 0.0515
7-day ID Diameter (in) Height (in) weight (lb) Unit weight (lb/ft”) Load (lb) Compressive strength (P1) 8.82 3.96 3.98 3.99 7.99 8.001 7.992 8.89 8.94 38362 40641 40176 3.97 8.97 51801 7.997 8.002 3.98 9.11 50499 3.99 7.997 9.03 52284 Sample 1 Sample 2 Sample 3 14-day Sample 4 Sample 5 Sample 6 21-day Sample 7 Sample 8 Sample 9 28-day Sample 10 Sample 11 Sample 12 3.98 8.001 9.12 9.12 4.01 7.998 57753 54870 57102 3.99 7.999 9.09 3.99 8 GO 83537 4.00 3.99 64374 9.13 9.15 9.13 8.01 7.998 63612