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Question:

why does concrete block crumble but driveways and sidewalk do not? (cement and car relate question)?

why does concrete block crumble but driveways and sidewalk do not?I don't have a driveway so basically i want to build a flat portable surface, made out of cement that my jack-stand (for my car) can stand on so the jack-stand wont have to be put directly in the grass.I would need it for the time that i need to take the tires off. any suggestion?

Answer:

Get a couple pieces of 3/4 plywood about 15 to 18 inches square and tack them together or a 2x10 or 2x12 board about 15 long for a jack base. That will support the weight of any car. If you use a cement slab it will be quite heavy, and also it might break. P.S. Please take a moment to award a Best Answer to one of those who answers your question. Not necessarily mine, but one of those who took their time to try to help.
May 11, 2017
use some bricks to support the car and the use of your jack and stands on bricks get a refrigerator box to slide on while working on the car ... much cheaper and less mess than concrete makings ...
May 11, 2017
your putting too much stress on the block if its crumbling
May 11, 2017
a piece of a plank or any thick wood
May 11, 2017

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