Materials: Concrete, Metals, Glass & Plastics is one of 9 topics in the Grade 12 Civil Technology CAPS syllabus, covered across 3 lessons on Study Vault. Below are real practice questions from this topic with full worked answers.
Sample practice questions
Easy
1. What is ready-mix concrete?
Concrete manufactured in a batching plant and delivered to site ready to pour
Concrete mixed entirely by hand on site using a wheelbarrow
Concrete that requires no curing at all
A type of reinforcement steel
Answer: Concrete manufactured in a batching plant and delivered to site ready to pour — Ready-mix concrete is batched and mixed at a plant, then delivered to site in a rotating drum truck ready to pour, rather than being mixed on site.
Easy
2. Which test measures the workability (consistency) of fresh concrete?
The slump test
The cube test
The tensile test
The impact test
Answer: The slump test — The slump test measures how much fresh concrete settles or "slumps" after a standard cone is lifted away, indicating its workability.
Medium
3. Name the process of keeping concrete moist and at a suitable temperature after placing, so it can gain its full strength.
Answer: curing — Curing keeps concrete moist and warm enough for cement hydration to continue, allowing the concrete to reach its full designed strength.
