I am building a house in the tropics and can't get reliable specs for the varying concrete mixtures I will need. Every contractor has a different story. I believe the concrete will be stronger if mixed with sharp gravel aggregate. What is the best mix for: Foundations, large blocks (approx 49cm x 29cm x15cm), mortar, floor fill, steps. The house will be one story but needs to be strong enough in case we decide later to add a story.
Also does anyone know how many blocks of above dimensions i can expect to get out of a 50kg bag of cement (specify mixture)?
2007-03-24 02:29:13 · 2 answers · asked by cognoscible 2 in Home & Garden ➔ Other - Home & Garden
1:4 ratio is normal however 1:3 will be fine too, this is for the blocks. Concrete 1:3:4 ratio but it depends on the ground. Also use Sharpe sand for the foundation concrete but building sand for the block work.
2007-03-24 02:40:59 · answer #1 · answered by simo 1 · 0⤊ 0⤋
I will just say that you need to remember to take into account the humidity of the area where the concrete is being made.. this will affect your mix
2007-03-24 03:40:35 · answer #2 · answered by Nomio 2 · 0⤊ 0⤋