mixing the load part 2

Mixing cement in a front loader continued. One thing You need to know is what type of mix is it 2500 psi 3000 3500 4000 4500 5000psi the higher the number the more water you will need in the load. another thing is the outside temp if it's cold and damp or just

rained then You will need less water.with this said from lesson one can somebody tell me what the word slump means in the cement industry.and what slump is normal to leave the plant,