Top 20 accessed subjects
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1. Cold Joints
2. Consistence tolerance - slump test
3. Floated and trowelled finishes
4. Thermal mass of concrete
5. Masonry - Densities
6. Water absorption limits on aggregates
7. Surface finish specification
8. Core testing for compressive strength
9. Slump test
10. Suspended floors
11. Carbonation of concrete
12. High strength concrete
13. U Values
14. Spacing between reinforcing bars
15. Characteristic strength
16. Design working life
17. Methods and mixing small quantities by hand
18. Time limit between placing fresh concrete layers
19. Flow table test
20. Brushed finish
