AZPW Maintenance Services Co., Inc. is a Houston based contractor providing asphalt paving services to numerous municipal and commercial industries. We offer the best service possible in all phases of the road building industry, parking lots, or athletic surfaces such as running tracks.
Serving the Houston area, we’re one of Texas’ most experienced asphalt contractors, dedicated to providing the finest roads, streets and parking lots. Our team of skilled employees is committed to doing the job right the first time. We stay up-to-date on recent advances in the road building industry and the newest technologies in laying new asphalt, and resurfacing damaged asphalt pavement.
- Construction Services
- New Construction
- Repairs and Resurfacing
- Excavation and Grading
- Soil Stabilization
- Parking areas and Roadways
- Shopping and Retail Centers
- Office Buildings
- Manufacturing Facilities
- Warehouses and Truck Terminals
- Strip Centers
- Apartment Complexes
- Schools and Parks
- Subdivisions
- Municipalities
We maintain equipment and qualified paving crews for large metropolitan projects which require the use of multiple pavers, smaller projects such as parking lots, or specialty projects.
Hot Mix Asphalt (HMA)
AZPW Maintenance Services Co., Inc. uses hot mix asphalt (HMA), consisting of a combination of crushed aggregate, air and liquid asphalt cement. The proper design of mixes, combination of aggregates, and liquid asphalt cement is essential to the production of durable pavement that will handle loads. We use only the best quality Hot Mix Asphalt to ensure the pavement meets all requirements.
Seal Coating
Seal coating is an effective treatment to protect your asphalt investment. Commercial Paving and Coating uses commercial-grade sealer with additives that enable your asphalt to resist leaks and offer protection against cracking and weakening.
Asphalt binder (tar) hardens when it is exposed to oxygen. This results in a brittle surface that will eventually crack. These pavement cracks allow rainwater and oxygen to the penetrate the asphalt pavement and it’s sub-base and shorten the pavement life by weakening it. Seal coating has many advantages to extend the life and appearance of your asphalt pavement.
Seal coating:
- Prevents oxidation
- Reduces pavement exposure to oxygen and water
- Fills asphalt surface gaps
- Seal coating asphalt pavement ultimately protects against deterioration, crumbling, and shrinking of the pavement. It provides resistance to elements that can soften asphalt.
Seal coating enhances asphalt appearance by restoring the original jet black color of the pavement. Seal coated pavement is easier to clean and maintain, and offers a solution to keeping your asphalt smooth and extending the overall life of the pavement.
Concrete Paving
AZPW Maintenance Services Co., Inc. has extensive experience in concrete pavement for commercial, industrial or municipal applications. Our paving crews are trained in the most recent procedures for producing quality concrete surfaces. We maintain modern mixing and paving equipment, ensuring your new surface or restoration project is the best quality available.
Traffic loads
The primary difference between concrete and asphalt road surfaces is that concrete is a rigid structure and asphalt is flexible. The significance of this is in how the pavements react to traffic loads and the environment. Each has its specific advantages and uses.
Durability
Concrete has a longer structural life. Typically, a concrete pavement is designed to last 25 to 30 years, and some are built with a life of 50 years. It doesn’t rut, washboard or shove out of its original position. Its rigid surface provides excellent durability.
Maintenance and Repair
Because it is built with a longer structural life, concrete requires less repair and maintenance. This means fewer delays for commuters due to closed roads under construction or repairs.
Concrete can Withstand Heavy Weight
Unlike asphalt, concrete is not affected by seasonal weakening of the sub grade during spring thaw. This feature allows heavy vehicles to maintain full weight on concrete highways all year round. Concrete is very well suited to heavy load truck traffic. It is especially useful for water courses and high weight loading areas. It is more expensive to install than asphalt but is a wise investment for locations that must withstand heavy loads.
Repairing/Filling Cracks
Cracks cause damage to your driveway, parking lots, and roads because they allow water to seep into the pavement. In Michigan the water freezes and eventually expands the width and depth of the cracks. As water penetrates the surface, the sub base begins to erode, and the pavement eventually takes on the appearance of the skin of an alligator’s back. This “alligator cracking” causes depressions and potholes. Once this occurs to an area of pavement, simple filling will not fix the problem, since the sub base is compromised. Rip out and replacement of the area is the only solution.
One crack leads to the formation of many; therefore, applying hot rubber fill when cracks are first noticed is the key to maintaining your surface before costly repairs are necessary.
In addition to the best materials available in the industry, the most important aspect for a quality outcome is the cleanliness of the area prior to product application. No expense is spared in area preparation. The industry’s leading debris cleaning blower system is used to clean dirt and debris from all cracks.
We only use commercial grade hot rubber fill on all cracks ¼ inch or wider. Hot rubber fill is far superior compared to cold fill purchased at a local home improvement center.
| Hot Rubber Crack Fill | vs. | Cold Rubber Crack Fill |
|---|---|---|
| Flexes with temperature variations | Not flexible, therefore the product cracks | |
| Adheres to asphalt because it is oil based | Does not adhere to existing asphalt | |
| Does not shrink in cold, keeping its bond to asphalt surface | Shrinks in cold, leading to widening of cracks | |
| Does not track in home or business | Product remains sticky and tracks in on shoes, pets, and kids |
Rip Out and Repair
Eventually routine maintenance on your driveway or parking lot will need to be supplemented with repair work. Repairing necessary areas ensures that damage will not continue to spread throughout the existing driveway, parking lot, or road. Pot holes, alligator cracking, standing areas of water, and depressions in asphalt are signs that seal coating and crack filling are no longer sufficient. Once these take place, structural problems to the sub base have occurred. If these problems comprise more then 35% of your property, a complete grade and pave overhaul of your property may be necessary.
Our technique:
1. In order to correctly address sub base issues, the problem area is saw cut and removed 1 foot beyond the visible defect. The sub base is checked and any undesirable debris such as clay or dirt is removed. Appropriate aggregate or asphalt millings are added to stabilize the sub base if necessary. The area is then machine rolled to industry compaction standards.
2. Next, tack coat is applied to the edges that have been saw cut to ensure proper bonding and adhesion to existing asphalt. This step is often skipped by companies offering too good to be true pricing. If this step is skipped, the newly laid asphalt will soon crack and pull away from existing asphalt, sending the area into the same spiral of cracking and sub base damage. Nothing will be changed.
3. Proper base asphalt is leveled and machine rolled with a vibratory roller. Vibratory rollers allow for better compaction compared to static rollers. This material is allowed to cool and then a second wearing coarse lift is applied. The existing grade of the pavement is matched so as not to be lifted by snow plows in the winter, and to prevent water pooling. Asphalt cannot be properly compacted in one lift. If it is applied in one lift the job will not have structural integrity.
Raveling
Raveling is the appearance of severe pitting and the presence of rocks being exposed in the surface of the asphalt. These areas are repaired by applying a slurry mix, if they are no more then ¼ inch in depth. A slurry mix is emulsified asphalt which contains double the percentage of latex modifiers and sand. It is then applied with a squeegee.
Surface Patching
Surface patching is the process of adding a new layer of asphalt to low puddling areas to raise the grade to match the surrounding surface. This process creates a lip and is easily lifted and destroyed by plow blades. Surface patching is a temporary fix, in effect a band-aid. It does not fix the structural defect that is causing the problem to occur.
Asphalt Overlays
Overlays are a cost effective choice to extend the life of your driveway or parking lot if the following conditions exist: the driveway is structurally sound, cracks are addressed to prevent reflective cracking, and less than 30% of the area to be paved needs rip out and repair.
If the area to be paved is simply overlaid with asphalt, the consumer will not be satisfied for very long. Simple overlays will show existing cracks within a few months or a year. The reason this occurs is that a gap between the new asphalt and old exists. This gap allows the asphalt to flex, and the old cracks reflect back up to the surface. This gap can be addressed by applying geotextile fabric. Geotextile fabrics create a barrier between the new and old asphalt and retard reflective cracking. Adding this fabric extends the life of your asphalt an additional 5-7 years.
Our technique:
1. Areas that need to be ripped out and repaired will be addressed. These areas are saw cut 1 foot beyond visible defect, structural sub base issues are addressed, tack coat is applied, and two lifts of asphalt are rolled and compacted.
2. Cracks ¼ or wider are machine blown and cleaned. Hot rubber crack fill is applied to cracks to ensure proper bonding to existing asphalt.
3. Tack coat is applied to the surface to be paved to ensure proper bonding to existing asphalt surface, or to ensure bonding of geotextile fabric to existing surface.
4. Next, installation of geotextile fabric is recommended to retard reflective cracking, and to prevent any existing sub-structural water that could affect the new surface.
5. 2.5 inches of new hot asphalt mix is applied, then machine-rolled and compacted to 2 inches.
Think of spending pennies on the dollar for the best repair. Extend the life of your pavement for 5-7 years instead of months. Apply geotextile fabric during the overlay process.