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3 cards from this section. Quick, good the night before a test.
What is a trial mix?
Think about why we prepare a batch before the final mix.
Why is flexural strength important?
Consider what happens when concrete is loaded.
What is the first action to take after conducting trial mix tests?
Think about which step ensures we can replicate success.
True or False: Only flexural strength is important in trial mixes.
Recall the tests we conduct on trial mixes.
A trial mix resulted in a flexural strength of only 3 MPa when the target was 4.5 MPa. Outline the steps you would take to adjust the mix to achieve the desired strength.
Look at each element of the mix and think about how changing each could impact strength.
You have recorded that a batch has too much workability but passes flexural strength tests. How would you adjust the mix to find a balance?
Identify components that enhance workability and consider their impacts when adjusting.
6 more questions in this section. Enroll free to practise them all.
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