Design a PCC mix for the following scenario:
CE 20400 Spring 2020
Design Environment: Unreinforced Slab in Minneapolis,Minnesota
                                  Consider the city to be a cold climate with severe weather
Required design strength: 4500 psi
Slabthickness:Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 18 inches
Statistical data indicate a standard deviation of compressivestrength of 200 psi
     (more than 30 samples)
Only air entrainer allowed
Air entrainer: Manufacturer specification is: 0.20 fl oz/1%air/100 lb cement
Courseaggregate:            1 ½†nominal maximum size crushed stone
                                           Bulk oven dry specific gravity 2.5
                                           Absorption 0.2%
                                           Oven-dry rodded density 125 pcf
                                           Moisture content 1.5%
Fineaggregate:Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Natural sand
                                           Bulk oven dry specific gravity 2.45
                                           Absorption 0.2%
                                           Moisturecontent 4%
                                           Fineness modulus 2.8
Cement                              Specific gravity 3.15
                               Â
