Engineering, 19.04.2021 16:00 lucypackham9
A minimum compressive strength of at least 4500 psi, after 180 days of curing (aging), is specified for concrete used in a bridge deck project. It is further specified that a water-cement ratio of 0.5, a slump of 3.5 in, and air entrainment of 4% are to be used. To provide a curing protocol that will produce the required compression strength, the concrete should first be moist cured and then cured:
a. In air for 3 days.
b. In air after 7 days.
c. In air after 14 days
d. A compressive strength of at least 4500 psi cannot be attained.
Answers: 3
Engineering, 04.07.2019 12:10
On a average work day more than work place firs are reorted
Answers: 1
Engineering, 04.07.2019 18:10
Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?
Answers: 3
Engineering, 04.07.2019 18:20
How much power could a wind turbine produce if it had the following specifications? cp = 0.45 -d=1.2kg/m3 d=50m v 5m/s
Answers: 2
Engineering, 04.07.2019 18:20
A2-m rigid tank initially contains saturated water vapor at 100 kpa. the tank is connected to a supply line through a valve. steam is flowing in the supply line at 600 kpa and 300 c. the valve is opened, and steam is allowed to enter the tank until the pressure in the tank reaches the line pressure, at which point the valve is closed. a thermometer placed in the tank indicates that the temperature at the final state is 200°c. determine (a) the mass of steam that has entered the tank (b) the amount of heat transfer.
Answers: 3
A minimum compressive strength of at least 4500 psi, after 180 days of curing (aging), is specified...
Mathematics, 16.09.2021 17:50
Mathematics, 16.09.2021 17:50
Biology, 16.09.2021 17:50
Mathematics, 16.09.2021 17:50
History, 16.09.2021 18:00
History, 16.09.2021 18:00
Mathematics, 16.09.2021 18:00
Biology, 16.09.2021 18:00
Medicine, 16.09.2021 18:00
World Languages, 16.09.2021 18:00