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On more than one occasion I need to cut an expansion joint in old concrete. Usually I’m repairing a dog-legged crack and don’t want another crack to open up 2″ away. Right now I’m looking at resurfacing a 60’x18′ driveway with 1 expansion joint 11′ from the road separating the apron from the rest of the 49′ mess which is a single pour. (Tearing up the driveway and repouring is not an option.) I typically use a rental unit concrete saw, and we do our best to get a straight line – some results are better than others. I’ve thought of puting together a 2″x6″ and some stakes to act as a guide for the saw, but the way the wheels are on the machine defeats that idea.
Is there a reasonably priced machine out there that will cut a straight line in concrete driveways, sidewalks and patios? Or does someone have a technique on how to accomplish a straight cut with what’s out there on the market?
I might add that I do concrete resurfacing work. Thank goodness for all the poorly designed pours out there, the cheap contractors who won’t spend the extra few bucks on a good pour, and the unknowledgeable consumers who buy all the substandard work and accept it without a whimper – until they call me in!!!
Cliff. Johnston
Replies
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On more than one occasion I need to cut an expansion joint in old concrete. Usually I'm repairing a dog-legged crack and don't want another crack to open up 2" away. Right now I'm looking at resurfacing a 60'x18' driveway with 1 expansion joint 11' from the road separating the apron from the rest of the 49' mess which is a single pour. (Tearing up the driveway and repouring is not an option.) I typically use a rental unit concrete saw, and we do our best to get a straight line - some results are better than others. I've thought of puting together a 2"x6" and some stakes to act as a guide for the saw, but the way the wheels are on the machine defeats that idea.
Is there a reasonably priced machine out there that will cut a straight line in concrete driveways, sidewalks and patios? Or does someone have a technique on how to accomplish a straight cut with what's out there on the market?
I might add that I do concrete resurfacing work. Thank goodness for all the poorly designed pours out there, the cheap contractors who won't spend the extra few bucks on a good pour, and the unknowledgeable consumers who buy all the substandard work and accept it without a whimper - until they call me in!!!
Cliff. Johnston