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Bullitt County Kentucky | The contractor I worked for (40+ years) does quite a bit of airport runway construction. We NEVER used expansion joints. They saw concrete to create what is called a "control joint". The concrete is only sawed part of the way through the thickness of the slab. Extra re-enforcement is installed just below the depth of cut. Expansion crack(s) occur at that cut, allowing the re-enforcing to hold slab "sections" together and at same level. We poured some slabs that were several hundred feet in continuous length before sawing, some of which is STILL THERE, STILL IN SERVICE as long as 35 years after I was part of it being poured. (At what is now UPS freight hub, running fully loaded 747's across it daily)
As was mentioned, sub-surface prep is key to life of concrete. Proper drainage (both surface and subsurface) is vital to the life of ANY hard surface. Concrete poured correctly and ADEQUATELY will outlast the people who pour it. NEVER pour concrete on frozen ground. Avoid muddy ground. Do NOT add excessive water to concrete as it is poured. Keep it cooled in summer heat to avoid rapid drying. A GOOD ready mix provider can furnish you with specs to proper strength and conditions for your exact situation. There is more to pouring concrete than what meets the eye.
Edited by Farmwithjunk 6/9/2013 08:34
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Concreting driveway do you put expansion joints
