We used a mix of 1 part cement, 2 parts sand and 4 parts crushed rock (1:2:4). This is a normal mix which yields about 3500psi strength (24 megapascal's). This is suitable for most everyday jobs. We went through 2 1/4 bags of concrete and half of our sand. We rented a concrete vibrator again which makes it much easier to work with concrete overall. Especially when you are making walls.
The end result seemed to be good when we left it this evening. It will serve us plenty well for our application I would think for many years to come.
The sand loaded in our truck, exactly 0.74 tons according to the quarry.
Sand in Hawaii isn't like what you have in the mainland or elsewhere. Its more like crushed rock rather then sand. Using away their beaches for concrete wouldn't be smart.
Can't even trust the wheel axel anymore. Needs to be blocked up on wood before use.
Most of this mixer has rusted away, leaving nothing but air to hold it together.
Its literally see-through by now.
The large wheel did eventually fall off on the last load.
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