679.3(a) 679.3(b) Deflection x 100 Loaded Slab Corner Deflection
* Use the highest Loaded Slab Corner Deflection and the lowest joint efficiency at each joint or crack.
Exercise extra precautions in the handling of hot asphalt hose and nozzle. Provide hot asphalt workmen with safety masks, protective gloves, heavy clothing in two or more layers, closely fitted at the ankles, wrists , and neck.
determines that continued material placement at any specified location is no longer economically feasible, or vertical movement is going to occur, the Representative may direct the Contractor to cease pumping at that location.
tolerance, to the correct grade. Grind as specified in Section 514.3, except grind into the high slab.
or improper methods. Stop work until the cause is determined and corrected.
the entire slab at no additional cost to the Department as specified in Section 516 .
with a rapid set, non -shrink concrete patching material. Strike patches flush with the surface of the surrounding pavement.
or crack as specified in Section 679.3(a) 2. Regrout slabs that deflect 0.02 inch or more and retest. The Representative may accept any slab that continues to show movement, in excess of that specified, after two properly performed groutings; or direct the removal and replacement, with a full depth concrete patch, as specified in Section 516 and paid for separately.
1.a Grout Plant. Provide a satisfactory positive displacement cement injection pump and a satisfactory mixing machine, capable of operating at a minimum speed of 800 rpm and a maximum speed of 2000 rpm.
1.b Water Tanker. Supply water from a water truck with adequate capacity and pressure for delivery to the grout machine.
1.c Drill. Provide generator, core drill, and diamond -tip core barrels, or other satisfactory equipment capable of drilling the grout injection holes through the pavement and base material; and equipment in satisfactory condition and operated to produce holes that are