D Question 15 If the compressive strength of concrete after 7 days of curing was (4.23 ksi), what is a possible compress

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D Question 15 If The Compressive Strength Of Concrete After 7 Days Of Curing Was 4 23 Ksi What Is A Possible Compress 1 (30.62 KiB) Viewed 35 times

D Question 15 If the compressive strength of concrete after 7 days of curing was (4.23 ksi), what is a possible compressive strength on the 21st day? O 71.3 ksi O 2.69 ksi O 6.91 ksi O 4.23 ksi Question 16 A plain concrete sample has a young's modulus of elasticity of 4,000,000 psi, the compressive strength (f'c) of the concrete is most nearly: O 9,656 psi O 4,925 psi O 7,365 psi O 2,456 psil 0.5 pts 0.5 pts