Get to know what are the common methods sidewalk repair NYC uses to repair concrete.
When a sidewalk crumbles, the damage is so extensive that it leads to unsafe conditions and potential safety hazards. The results can be very costly in terms of injuries.
With the passage of time, harsh weather conditions, and heavy traffic, sidewalks deteriorate, requiring some maintenance as the years go by. Sidewalk damage can be caused by many conditions such as unsatisfactory grading, how the concrete was constructed, the soil beneath the slabs, and even animal damage.
Following are some of the standard methods sidewalk contractors use for repairing damaged sidewalks :
Concrete Raising or Slab jacking is a method that lifts the sidewalk slabs and places them back to their original position by injecting cement under the sidewalk with tremendous pressure.
After placing the slabs, numerous holes are drilled through the slab, and non-cement material such as grout is injected to fill the gaps under the slab and raise it. This method is relatively cost-effective than replacement, but it can only be used on sunken sidewalks. This method is quite effective when the concrete of the slabs is in satisfactory condition.
Concrete Grinding is a relatively new method used to remove hazards that causes tripping in concrete sidewalks by eliminating the protrusions on a surface by removing a thin layer of concrete. After grinding the surface, it is left even on both sides with a slope. This method is effective when the trip hazard between the concrete slabs is between 1 to 1/2 inches.
Precision Concrete Cutting
Sidewalk repair NYC often uses Precision Concrete Cutting as it is the most affordable and efficient method of repairing the concrete slabs than the traditional raising of sidewalks. In precision concrete cutting, the concrete is molded into a non-slip surface resulting in an aesthetically pleasing outlook. Apart from the physical appearance of the sidewalk, this method also ensures a far safer sidewalk.
When it comes to narrow cracks, Epoxy Injection is used. This method consists of establishing entry and exit ports at close intervals along the cracks and sealing the exposed surface cracks. After that, epoxy is injected with immense pressure.
Sealing Of Cracks
This method is used in conditions that require remedial repair and where structural repair is not necessary. The crack method’s sealing requires the enlargement of a crack along its exposed face and then filling and sealing it with a joint sealant.
The method is quite common for treating delicate patterns and large isolated cracks and is relatively simpler than the other methods used to repair concrete slabs of sidewalks.
Crack Repair By Stitching
Stitching is a method that involves drilling holes on either side of a crack, cleaning the holes and grouting in metal units with short legs that span the crack.
Gravity Filling Method
The cracks with a surface width of 0.001 to 0.008 inches can be sealed by gravity filling low viscosity epoxies and resins. Lower the viscosity, more refined and sleeker would be the cracks that can be filled. This method consists of cleaning the surface by air blasting or water blasting. Ideally, a wet surface should be allowed to dry for several days to obtain the best crack filling.
Dry Packing is a method that consists of hand placement of a minimal water content mortar, followed by ramming of mortar into place, ultimately producing intimate contact between the concrete and the mortar. This method is effective as it results in slight shrinkage due to the material’s low-water cement ratio. The patch remains tight and fixed, which has an excellent quality concerning strength, durability, and water tightness. Dry packing can be used for the repairing of dormant cracks.
Overlay Of Cracks
Fine cracks in the slabs and sidewalks’ surface can be repaired using the bonded overlay, whereas the unbounded overlay is used to cover the slab. This treatment is effective when the cracks do not wholly penetrate the slab of the sidewalk.
The treatment of excellent cracks is done through Surface Treatment. In this method, low viscosity resin-based systems and low solids are used to seal the concrete surfaces. Materials such as acrylics, epoxies, or polyesters are applied in the cracks.
Skid-resistant material is mixed into the material or applied over the surface to improve traction. Sidewalk repair NYC can be your mentor if your sidewalks are damaged. Make sure you get in touch with the best one.