Road Maintenance

Crack repair /sealing is a localized treatment method used to prevent water and debris from entering a crack, which might include routing to clean the entire crack and to create a reservoir to hold the sealant. It is only effective for a few years and must be repeated. However, this treatment is very effective at prolonging the pavement life. Includes the following three crack repair methods (sealing, filling, full depths crack repair):

Used on all types of cracks, it involves using a hot air lance or compressed air to blow out the debris in the crack, then filling with a sealant. Crumb rubber Modified bitumen that we produce in Ziggurat oil is very effective in the clean-and-seal method.

Involves using a pavement saw to create transverse joints at regular intervals along a newly placed pavement, then filling with a sealant.

Used on transverse and longitudinal cracks. Involves using a pavement saw or router to create a reservoir centered over existing cracks, then filling with a sealant.

Differs from crack sealing mainly in the preparation given to the crack prior to treatment and the type of sealant used. Crack filling is most often reserved for more worn pavements with wider, more random cracking. Asphalt emulsion can be used as a crack filler. Hear in Ziggurat Oil we supply Asphalt Emulsions such as CSS-1, CSS-1h and SS-1h that use for crack filling.

A localized treatment method to repair cracks that are too deteriorated to benefit from sealing. Secondary cracking requires the reestablishment of the underlying base materials.

An application of diluted emulsion (typically at a rate of 1:1) to enrich the pavement surface and delay raveling and oxidation. Considered a temporary treatment. Slow-setting asphalt emulsion may be used for Fog seal.

Used to waterproof the surface, seal small cracks, reduce oxidation of the pavement surface, and improve friction.

An application of two single seal coats. The second coat is placed immediately after the first. This treatment waterproofs the surface, seals small cracks, reduces oxidation of the pavement surface, and improves friction

A mixture of fine aggregate, asphalt emulsion, water, and mineral filler, used when the primary problem is excessive oxidation and hardening of the existing surface. Slurry seals are used to retard surface raveling, seal minor cracks, and improve surface friction.

Commonly referred to as a polymer-modified slurry seal; however, the major difference is that the curing process for microsurfacing is a chemically controlled process, versus the thermal process used by slurry seals and chip seals. Also, may be used to fill ruts.

Includes dense, open, and gap-graded mixes that improve ride quality, reduce oxidation of the pavement surface, provide surface drainage and friction, and correct surface irregularities.

Includes using cold- and hot-asphalt mixture, spray injection methods, as well as slurry and microsurfacing materials, to repair distress and improve ride quality.

Table 1 lists each type of maintenance technique along with reasons for using each one: