Concrete normally attains its design strength in about ____

Author Question: Concrete normally attains its design strength in about _____. a. 14 days b. 21 days c. 28 days ... (Read 74 times)

Mr.Thesaxman

Hero Member
Posts: 514

on: Jul 24, 2018

Concrete normally attains its design strength in about _____.

a. 14 days
b. 21 days
c. 28 days
d. 30 days

Question 2

Steel is used for reinforcement because it _____.

a. will not corrode
b. has nearly the same temperature expansion and contraction rate as concrete
c. has a lower temperature expansion and contraction rate than concrete
d. is inexpensive

ryhom

Sr. Member
Posts: 366

Reply #1 on: Jul 24, 2018

Answer to Question 1

c

Answer to Question 2

b

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