17.5.6 - Step 6: Mix Calculations (Trial Mixes)
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Practice Questions
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Define what a trial mix is.
💡 Hint: Think about testing a small sample before the main batch.
What is flexural strength?
💡 Hint: Consider how a beam would act under a load.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the primary purpose of conducting trial mixes?
💡 Hint: Think about why we test before producing the final mix.
True or False: Flexural strength is not a significant consideration in pavement design.
💡 Hint: Remember the role of flexural strength in supporting weight.
1 more question available
Challenge Problems
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A trial mix resulted in a flexural strength of 3.5 MPa, whereas the target is 5.0 MPa. Suggest a plan to adjust the mix to achieve this target.
💡 Hint: Consider how altering these two factors could influence the output.
During a durability test, a concrete mix shows failure under freeze-thaw cycles. What adjustments would you recommend for future mixes?
💡 Hint: What types of admixtures can help improve durability in harsh environments?
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