Water for concrete
Building and Construction · Grade 10 · about 40 minutes
Clean water hydrates cement and makes the mix workable; too little will not place, too much makes weak, segregated concrete.
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- 8 sections of explanation, worked examples and diagrams
- 1 practice task with hints and worked answers
- A quiz that marks itself as you go
- Your progress kept across every subject you take
Other lessons in this sub-strand
- Concreting
- What concrete is
- Cement as the binder
- Sand as fine aggregate
- Coarse aggregate (ballast)
- Water for concrete
- Mix proportions
- Hand tools for concreting
- Mixing platform and jua kali mixer
- Batching concrete
- Mixing concrete
- Transporting concrete
- Placing concrete
- Compacting concrete
- Curing concrete
- Safety when concreting
- Performing a concrete batch
- Workability and defects
- Why concrete is essential
- Care of materials and the environment