Water-cement ratio is the ration of mass of water to the mass of cement.
Numerically it is around 0.5, depending on the desired strength and workability.
A low ratio results in a dry mix which is difficult to compact, with a risk of developing voids in the final concrete.
A high ratio weakens the concrete, and is highly undesirable if strength is important.
To improve both the strength and workability of the concrete, sometime plasticizers are added.
It would have been appropriate to post this question in the Engineering section (if one is available).
Answer:
.2,.35,.39,.75
Step-by-step explanation:
u just arrang in order
Answer:
2 hours
Step-by-step explanation:
Train B's speed: 4/3 × 60 = 80
Combined speed = 80 + 60 = 120
Time = 240/120 = 2
Answer:
350 Stamps left
Step-by-step explanation:
First do 5/8*400= 250
Then take 1/5 of it 1/5*250
You end up with 50 so do 250-50= 200 and add the 150 Canadian stamps to get a total of 350 stamps.
