Diamond Products 6" x .095" First-Cut / Soff-Cut Early Entry Concrete Saw Blade 68407

What are True Early Entry Control/Relief Joints?
As concrete is placed and being finished, chemical reactions begin to take place causing the slab to increase in temperature. Stress, caused by shrinkage, begins to accumulate rapidly. At this time the concrete is looking for relief. If not relieved in a timely manner the concrete will relieve itself, resulting in random cracks appearing across the surface of the slab. By placing True Early Entry joints at the appropriate spacing (normally 10' to 12' apart) the concrete finds the relief it's looking for and cracks directly beneath the cut. The timing of True Early Entry joints are critical! Controlling random cracking is all about the timing of the cut, not the depth of the cut. Cuts must be placed between the initial set and the final set of the concrete. This CONTROL ZONE is the optimal cutting time to give concrete relief when it is looking for it the most.