Crack is produced when the tensile strendth of concrete exceeds its compressive strength. It must be considered three conditions: the size of the deformation, the degree of constraints, real-time tensile strength under the constraints of the deformation of the tensile stress generated more than real-time tensile strength.
What should we before the crack filling:
First, it must do some inspection about materials, crack router, crack sealing machine and other road maintenance equipments.
Second, when we choose the sealants, it is necessary to based on temperature, traffic and pedestrian traffic requirements. And it is important that sealant must be sampled and tested prior before install.
Third, equipment inspections are also important before the crack sealing. For hot applied sealants, an indirectly heated double boiler type melter with effective agitation is being used. Temperature gauges are calibrated and checked for accuracy. And it is also need proper wand for desired application are used.
Forth, there are also need other application equipments, for example, pump for cold applied sealant functions correctly, pour pots are in good working order and material squeegees or other shaping/forming tools are clean, in good condition, and of appropriate configuration to produce desired sealant shape.
Finally, it is time to use crack router to crack the pavement and use the crack sealing machine to fill the crack.
If you have other questions about crack sealing, welcome to contact with us at any time, we will request you as soon as receive your letter.
