Top 20 accessed subjects
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1. Slump test
2. Basic properties
3. Consistence tolerance - slump test
4. Screeds – general
5. Masonry - Densities
6. Example of U value calculation
7. Floated and trowelled finishes
8. Air-entraining admixtures
9. Bleeding and segregation
10. Honeycombing of concrete.
11. Water absorption limits on aggregates
12. Flow table test
13. Friction between elements
14. Contiguous Bored Piles/Secant Piles
15. Batching by volume - DIY
16. U Values
17. Thermal mass of concrete
18. Time limit between placing fresh concrete layers
19. Surface regularity - straightedge method
20. Cold weather concreting
