Construction Materials
Cement, concrete, blocks, timber and steel at speed. A quick start for civil engineers.
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What are the main ingredients of concrete?
- Clay and straw
- Sand, lime and bitumen
- Cement, sand, coarse aggregate and water
- Cement and water only
Which is the most widely used type of cement?
- White cement
- High-alumina cement
- Ordinary Portland Cement
- Sulphate-resisting cement
Cement hardens through a chemical reaction with water called:
- Oxidation
- Evaporation
- Combustion
- Hydration
Mortar is a mixture of:
- Cement, gravel and water
- Bitumen and sand
- Lime and gravel only
- Cement, sand and water
What are steel bars placed in concrete called?
- Reinforcement (rebar)
- Aggregate
- Formwork
- Admixture
Plain concrete is:
- Strong in compression but weak in tension
- Strong in tension but weak in compression
- Weak in both
- Equally strong in both
Sandcrete blocks, common in Nigeria, are made of:
- Bitumen and gravel
- Timber and lime
- Cement, sand and water
- Burnt clay
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