As leaders in the St. Louis asphalt industry, we feel it is our duty to provide more than just great paving solutions, but knowledge that everyone can utilize in preserving their parking lot. While asphalt is tough in nature, it will develop cracks over time. Unfortunately cracks are completely unavoidable; however they can be easily repaired.
In this blog entry, we explain exactly what goes into the repairing process.
#1 Clean the Surface: It is extremely important we clean any loose debris that sits within the cracks. Once we loosen all the broken asphalt using a heat lance or abrasion wheel, we will go over the infected area with a high pressure blower or power broom to remove any loose material.
#2 Fill the Cracks: We use hot applied rubberized crackfill material specifically designed for cracks in asphalt surfaces. This type of material is heated in large double wall burners and is usually only available to professionals in the asphalt industry. The proper material and equipment makes all the difference in preserving your asphalt surface.
#3 Let Dry: Crackfilled areas can be opened to traffic in a relatively short period of time. We do not recommend applying crackfill material in current weather conditions as the material will not set up properly and will remain “tacky” to foot and vehicle traffic. One of our pavement professionals will explain the necessary drying period before the project is completed.
For almost 30 years, the folks at Leritz & Busy Bee have been supplying the St. Louis area with innovative paving methods. If you have any questions regarding our asphalt solutions, please feel free to reach out! Remember: for all your commercial and residential paving needs, think Lertiz & Busy Bee!
At Lertiz & Busy Bee, we’re dedicated to not only supplying superior paving solutions, but providing leadership in the asphalt community. When new technologies arise, it is our goal to educate customers on the benefits we could bring to their paving projects. In this blog entry, we would like to explore the slew of advantages warm-mix asphalt has over conventional paving methods.
Warm-mix asphalt gained notoriety in Europe several years back for its positive impacts on the environment. Since then several communities here in the U.S. have adopted the process—including St. Louis—making it a popular alternative paving method. In 2011, over 200,000 tons of warm-mix asphalt was laid in the tri-county St. Louis area alone.
While some of the advantages may seem obvious, here is a basic rundown of the benefits warm-mix asphalt can bring.
- Reduction in emissions: VOC and CO2 can be reduced by up to 60%. This process allows the contractor to lower the temperature of the asphalt by over 50 degrees, thus dramatically reducing the production of greenhouse gases.
- Energy Savings: It’s quite common for asphalt plants to see a reduction of over 30% in energy costs.
- Less Fuel: Because the temperatures run so much cooler, less fuel is used during the mixing.
- Less Odor: Traditional asphalt emits not only a cloud of smoke, but also a very strong odor. If you’re running a business that is open to the public, do you really want them greeted this way? Warm mix asphalt produces less odor and yields little to no gas during the paving process.
- Safer: Working with traditional hot-mix asphalt can be a very dangerous process. With warm-mix asphalt, not only will the contractor be exposed to less odor and smoke, but the risk of severe burns is reduced.
- Faster: Because the compaction process is quicker, it allows roads and parking lots to open up to traffic sooner. For any business, time is money. For example, the longer a retail parking lot is closed the longer it serves as a burden to its customers.
- Less Cracks: The binding process requires less ageing, which in return will increase the longevity of the asphalt.
For almost 30 years, the folks at Leritz & Busy Bee have been supplying the St. Louis area with innovative paving methods. If you have any questions regarding warm-mix asphalt, please feel free to reach out! Remember: for all your commercial and residential paving needs, think Lertiz & Busy Bee!
Recent record-setting heat is causing serious problems in some parts of the country; recent pavement blowups in Iowa have forced the Department of Transportation to issue a warning to motorists, urging them to pay special attention to pavement surfaces when driving in temperatures above 90 ° F.
Pavement blowups occur when a wet period is followed by periods of extreme heat. Water stays in the cracks in pavement surface, then thermal expansion forces the pavement to buckle and shatter. The blowups pose a safety risk for motorists as well as costing the state additional money for repairs. The Iowa Department of Transportation estimates that pavement blowups cost the state $400,000 annually in road repair as well as an additional 2-4,000 hours of manpower making temporary repairs.
Motorists are urged to use caution and reduce speed when approaching broken pavement areas.
Spring has sprung! And with it comes warmer temperatures, flowers… and potholes. But how do potholes form and why are they more present in the spring?
Potholes are holes in the road that vary in size and shape, they are caused by the expansion and contraction of ground water after water has entered the ground under the pavement. When water freezes, it expands. Think of when you make ice cubes — a tray full of water is put into the freezer, and when you remove the tray from the freezer, the water has expanded.
This same effect happens when water gets into the ground under the pavement. If it has a chance to freeze, it will take up more space under the pavement and the pavement will expand, bend, and crack, which weakens the material pavement. When the ice melts the pavement contracts and leaves gaps or voids in the surface under the pavement, where water can get in and be trapped. If the water freezes and thaws over and over, the pavement will weaken and continue cracking. As the weight of cars and trucks pass over the weak spot in the road, pieces of the roadway material weaken, which cause the material to be displaced or broken down from the weight, creating the pothole.
What happens when salt is brought into the picture? Water freezes at 32 degrees Fahrenheit. When salt is used, it lowers the temperature at which water will freeze. This creates an artificial freeze-thaw cycle that permits more occurrences of the damaging cycle to occur. This happens more often in the spring because of the melting that takes place and because the temperatures fluctuating above and below the freezing point very frequently.
Source: Summit County Engineer’s Office, www.SummitEngineer.net
Even the most well-designed asphalt pavement system can’t escape the damaging effects of Mother Nature. How can facility owners or building managers know which preventative maintenance strategies are best for them?
In relatively new pavement showing the beginning signs of deficiencies such as surface cracking, preventative maintenance can add years to the life of an asphalt pavement system. Planning a pavement maintenance program early on can save both time and money.
Here are some helpful processes for maintaining your commercial asphalt system:
Crackfilling – Crackfilling typically refers to the process of blowing out and cleaning cracks prior to installation of a crackfiller material. This is also known as the “blow-and-go” method. If properly done, crackfilling reduces the infiltration of water into the crack, which protects the pavement system from being weakened by moisture. Crackfilling should be used for wider-type, non-working cracks.
Cracksealing – The cracksealing process involves an additional step that’s highly recommended for longer-term performance, and involves routing of the crack. Cracksealing includes grinding out the crack to a wider, 0.5-inch by 0.5-inch to 0.75-inch by 0.75-inch square, providing a reservoir for the rubberized crackseal material.
Surface Treatments – There are many surface-treatment options to choose from. General categories of surface treatments include: coatings (asphalt or coal tar emulsions), penetrating or rejuvenating sealers or aggreagate-based seals such as slurry seals, chip seals and micro-surfacing.
Be sure to call Leritz / Busy Bee to inquire if any of these practices will work for your commercial pavement system!
Source: Buildings.com, full article at www.buildings.com/ArticleDetails/tabid/3321/ArticleID/6701/Default.aspx