Excavating & Grading
The accuracy in preparing any ground surface for further development by excavation and grading needs an experienced and resourceful firm like Accurate Road Construction to guarantee an uncompromising outcome within your budget…
Sewer and Water Mains
Collapsed pipes and blocked storm drains demand a quick and efficient solution. Our well-trained team has the proficiency to undertake any sewer and water main installation, maintenance or emergency repair type jobs…
We are equipped with the latest equipment, qualified workers and a commitment to carrying out all sizes of asphalt work – whether it’s a complete parking lot re-construction, asphalt repairs and patches, or resurfacing…
Asphalt Patch Repair
The asphalt around the pothole must be removed, including a foot of undamaged asphalt radiating around the perimeter of the pothole.Accurate Road Construction team members prep the work area by delineating a rectangle or square around the pothole that includes this surrounding foot of good asphalt; this area is the piece of asphalt that will be removed. The asphalt is removed, and the hole is cleared of debris and cleaned.
Next, tack is applied to the bottom and sides of the hole to help the new asphalt adhere. The hole is then filled with hot or cold asphalt (determined by the season,) and the new asphalt is compressed using a multi-ton vibratory plate or roller.
Finally, the edges of the filled hole, or patch, are sealed using hot or cold asphalt and aggregate chips or sand. In some cases, the base rock underneath the asphalt pavement may also need to be replaced.
Accurate Road Construction will evaluate the structural damage to your asphalt pavement and determine whether the entire pavement must be removed, or whether parts of the pavement are strong enough to remain in place so that only partial removal and replacement is necessary.
The process of asphalt removal will begin with breaking up of the perimeter around the damaged area or areas using a saw cutter or jackhammer. The damaged asphalt will then be removed and hauled away.
At this point, we will examine the sub-base for any problems there. These can include shallow utilities, excessive moisture, general structural deficiencies, or a sub-base that was improperly prepared in the first place.
These problems must be corrected before the asphalt pavement can be replaced, and they often are not apparent until the damaged asphalt has been removed.
Once any problems with the substrate have been corrected, it will be re-graded and compacted. Then replacement can begin. The edges of the replacement area will be cleaned, and a sticky, adhesive tack coat will be applied in order to help the new asphalt that will be poured in bond to the stone base and to the adjacent asphalt.
Resurfacing or Overlay
Signs that it is time to resurface your asphalt include: depressions in the pavement, such as ruts or wheel depressions, often noticeable by puddles of water that sit in them after a rain; surface erosion, noticeable by pitting or pock marks on the surface of the asphalt and a generally rough and uneven appearance; significant areas of alligator cracking or fatigue cracking, which looks like the skin on an alligator’s back because the intersecting cracks form a series of little blocks in the asphalt; patch repairs in various areas, marking previous sites of isolated structural failure.
Resurfacing is a multi-step process that involves cleaning the asphalt area to be resurfaced, leveling out irregular rises or dips in the asphalt surface, modifying all drainage structures within the area, and much more, most of which is specific to the site. There are different techniques used during resurfacing, including geotextile reinforced resurfacing or Petromat, butt joint or grinding, and leveling binder.
Petromat is a nonwoven, geotextile fabric that increases the life span of asphalt overlays. The fabric is laid over the old layer of asphalt before pouring on the new one, and serves as a waterproof seal between the two layers and structural support for both. Before it is laid, the Petromat is coated with asphalt cement tack in order to waterproof it and help it bond the old and new layers of asphalt. In addition to forming a waterproof barrier, the Petromat will also absorb stress on the surface layer, prevent cracks in the old asphalt from spreading to the new asphalt (otherwise known as reflective cracking,) and protect the old layer of asphalt from the external destructive elements that affect the new asphalt, which could otherwise damage the old asphalt and necessitate removal of both layers.
Butt joint or grinding is necessary to join the new overlay surface with an adjacent existing surface, such as a concrete pavement. The old asphalt must be removed from the border area along the other surface and then replaced in order to ensure that the asphalt repaving is level with the edge of the other surface. The overlay itself should never be tapered or ground down to meet adjacent surfaces because this severely impairs the strength of the overlay. Instead, adjacent surfaces themselves should be ground down to meet the overlay.
Leveling binder is used in resurfacing to enhance grades and improve the strength of the asphalt. Hot asphalt is poured into dips in the existing asphalt, filling them to varying depths. This adjusts the degree or angle of the asphalt surface to restore the original, appropriate gradient or slope.
We have proven that we contain the abilities too finishing concrete works for all types of clients with an exceptional attention to details to deliver you sturdy concrete surfaces that can take any amount of traffic over the years…
130 Healey Road, Unit 8, Bolton, Ontario, L7E 5B3