Concrete Technology

4. Used for general concrete work.
7. The determination of the exact amount of each ingredient that is ti be placed into a specific mix.
9. Cement suitable for use in foundations where there a re low levels of sulphate.
12. A special equipment used in volume batching
13. Used to measure the workability of the concete.
15. This is essential to ensure a good mix.
16. A combination of limestone, silica and water.
17. Cement that contains aluminum ore.
20. The second number in the ratio 1:2:3 mix.

1. This is mixed with cement powder to form a paste.
2. The increase in volume of a given quantity of sand due to moisture in any concrete mix.
3. The more reliable system of batching.
5. A substance the binds the aggregates together into a very dense material.
6. A test that shows the best possible strength concrete can reach in perfect condition.
8. The chemical process of cement absorbing water.
10. A mixture of cement, fine aggregates and water.
11. A type of mixing method.
14. To ensure adequate strength Concrete should be left to cure for a minimum of......
18. An equipment needed to perform the slump test.
19. The ability of wet concrete to be able to be placed and worked with ease.