Tag
#concrete
5 topics across all disciplines.
Foundations — how the soil report decides what you build
Safe bearing capacity, shallow versus deep foundations, why vibrating equipment needs a different design, and what the civil engineer needs from the other disciplines.
Concrete and reinforcement — why the mix is the easy part
What concrete grade actually means, why the water-cement ratio decides almost everything, what cover is protecting, and why curing is the most neglected step on site.
Concrete mix design — why the water-cement ratio decides almost everything
What the numbers on a mix submission mean, why water is the one ingredient that both makes concrete work and ruins it, what tricalcium aluminate has to do with sulphate attack, why pozzolans make concrete better and slower at the same time, and why durability usually sets the mix rather than strength.
Placing, curing and testing concrete in hot weather
Why curing is a chemical requirement rather than a finishing touch, what evaporation rate does to a slab before it has set, how cube specimens must be made and stored to mean anything, what the acceptance criteria actually say, and why a cold joint is a structural defect rather than a cosmetic one.
Reinforcement detailing and formwork — cover, laps and the things that move
Why cover is a durability dimension rather than a tolerance, what a lap length is actually doing, why site-made spacers cause the defect they were meant to prevent, which bars may be welded and which must never be, and why formwork rigidity decides whether any of it stays where it was put.