Can I prevent my poured concrete driveway from cracking?

Folks in the concrete business like to say they guarantee poured concrete against two things only: theft and fire. In fact, a concrete surface is bound to crack.   

You can patch cracks in your concrete driveway, but more cracks will take their place--unless you find out what is causing them.
 
The most likely cause: standing water. Once it penetrates a porous concrete surface, it will expand and contract as the outdoor temperature fluctuates, and that can push the concrete apart. Other causes: sprawling tree roots, salt and chemicals used for de-icing, the impact of a fallen object or the weight of an oversized truck. 

Move your sprinklers away from your concrete driveway, sidewalk and patio. And if you're pouring a new driveway, leave sufficient expansion and contraction joints so the material has some room to flex.
 
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