Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is a harsh mix?
💡 Hint: Think about the characteristics of the mix.
Question 2
Easy
Name one cause of a harsh mix.
💡 Hint: Consider the types of aggregates in the mix.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the main cause of a harsh mix in RMC plants?
- Insufficient fines
- Too much water
- High ambient temperature
💡 Hint: Think about what helps to make the mix smooth.
Question 2
True or False: A harsher mix can improve the strength of the final concrete structure.
- True
- False
💡 Hint: Consider how workability affects the concrete application.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Calculate the optimal fine to coarse aggregate ratio to mitigate harshness in a mix. Given: 30% maximum coarse aggregate size and current fine aggregates at 20%.
💡 Hint: Think about what ratio usually works best for concrete and adjust accordingly.
Question 2
Case Study: During a site evaluation, a harsh mix was discovered causing placement issues. Suggest a step-by-step approach to resolve this, including material adjustments.
💡 Hint: Consider what the first steps in resolving a construction issue might involve.
Challenge and get performance evaluation