Frequently Asked Questions
General Questions | Paving Questions
Patching and Repair Questions | Sealcoating Questions
Crack Repair Questions | Concrete Repair Services
Cement Stabilization Questions | Glossary for Asphalt Paving Terminology
Concrete Repair and Services
What sort of maintenance is required to prolong the life of your parking lot?
Do you provide free estimates?
What kind of warranty is provided?
Will my business be shut down during construction?
How can you tell a good contractor from a bad contractor?
How do I get a fair estimate?
How long will my new asphalt surface last?
What is the minimum temperature for paving?
What is the asphalt index?
How soon can I use my newly paved surface?
Blemishing on newly paved asphalt?
What is the difference between asphalt paving and asphalt paving sealer?
Asphalt pavement sealer is a surface coating that is applied over the asphalt surface to beautify and protect existing asphalt. It is associated with the process of “asphalt sealcoating” which is usually applied every few years along with pavement marking and line striping. Asphalt sealcoating through asphalt pavement sealer will significantly increase the life of a parking lot by reducing the effects of oxidation and water on the surface of the parking lot. Contrary to what some may lead you to believe, pavement sealer will not reverse any effects of aging that have already occurred. Any cracking in the asphalt surface due to age or insufficient base must be corrected with a structural repair. Crack-filling can help the situation to some degree but should only be seen as a minor corrective measure that will only have limited success.
What is Stamped Asphalt and is it as good as paver blocks?
What is blacktop paving?
Can you pave over concrete?
What are the major contributors to pavement deterioration?
Why should I choose asphalt paving over other methods?
Patching and Repair
When is the best time to perform patchwork?
What causes potholes to form?
What are the different kinds of patch repairs?
What are the benefits to parking lot repair through asphalt seal coating?
What is the difference between asphalt sealer and pavement resurfacing?
Does the Asphalt Sealer fill in the pavement cracks?
How long should I wait before driving on a newly sealed surface?
Should a newly paved lot be seal coated right away?
When is the best time for a parking lot to be sealed?
Why should I fill in the cracks that have developed in my parking lot with asphalt crack filler?
Concrete Repair and Services
What sort of concrete services do you provide?
Is there a difference between cement and concrete?
Can concrete be placed in extremely hot or cold weather?
What causes concrete to crack?
Why does some concrete develop surface deterioration?
What causes discoloration of concrete?
How soon can new concrete be put into use?
What does FDR stand for?
Is stabilization guaranteed to work?
Is it messy to work with?
Glossary for Asphalt Paving Terminology
Asphalt(Asphalt Cement): A dark brown to black cementitious material in which the predominating constituents are bitumens, which occur in nature or are obtained in petroleum processing. Asphalt is a constituent in varying proportions of most crude petroleum and used for paving, roofing, industrial and other special purposes.
Aggregates: Usually various sized stones, crushed rock, gravel, etc. that make up approximately 92-96% of the asphalt mixture. (Asphalt Cement makes up the other 4-8 %.)
Asphalt Base: Asphalt mix where the largest stone used is no larger than 3/4 of an inch (typically #57 gradation). Base mixes are usually laid over a stone base at a minimum depth of 2 inches compacted.
Asphalt Binder: The asphalt layer between the base layer of rock or other aggregate and the driving surface layer. The asphalt binder layer is usually made up of coarser materials and is usually thicker than the surface layer. The binder layer can be used as either a first layer or a driving surface, but its use is actually fairly limited. The vast majority of jobs call for a stone base layer, an asphalt base layer, and then a surface layer.
Asphalt Leveling Course: A course of hot mix asphalt of variable thickness used to eliminate irregularities in the contours of an existing surface prior to placing the subsequent course.
Coal Tar: A by-product of coke ovens in the steel production industry. Refined coal tar has been used as a base for asphalt pavement sealers since 1938. It has become more expensive in recent years due to the shift in steel production to foreign countries.
Compaction: Compressing a given volume of material into a lesser volume. A compacted subgrade and base is essential.
Crusher-run: The total unscreened product of a stone crusher.
Density(thickness or compactness): Technically, density refers to the weight of a material at a specific volume (unit weight). A specific density of asphalt is achieved my mechanically compacting (rolling) the hot material after it has been placed by the paving equipment. To most consumers of asphalt, it means the compaction of the material versus a theoretical value that is usually derived in a laboratory.
Emulsion: Mechanically produced combination of ingredients, which do not normally mix. For example, asphalt emulsions are made by a procedure, which mechanically mills the warm asphalt into minute globules, dispersing them in water, and adding a small amount of an emulsifying agent.
Finished Grade: The final grade created as part of the project.
Full-depth Asphalt Pavement: The term full-depth certifies that the pavement is one in which asphalt mixtures are employed for all courses above the subgrade or improved subgrade. A full-depth asphalt pavement is placed directly on the prepared subgrade.
Geotextiles: Geotextile is the technical name for fabric like materials used in the paving process. Geotextiles are manufactured for specific uses and performance characteristics. Some uses include stabilization of base material to prevent migration into sub-grades, retarding of reflective cracking in asphalt overlays, and serving as a moisture barrier between pavement layers.
Grade-Slope: The degree to which a paved surface is angled to aid in the drainage of water. The act of leveling or sloping the subgrade or base layer before paving.
Heat Lance: Device using a combination of propane and compressed air ignited in a specially designed chamber to produce an extremely hot high-velocity stream of air. Used to remove debris and vegetation from pavement cracks prior to sealing. It also warms and dries the crack to better accept the sealant. When properly used federal research has determined this to be a most effective preparation method (SHRP H-106 Data). Although more expensive initially the combination of routing and heat lance preparation can provide 10 times the life of conventional crack sealing methods.
H.M.A.C: Hot Mix Asphalt Concrete. Abbreviation of the proper name for what is commonly referred to as “asphalt”, “hot-mix”, “blacktop” etc. This term should always be used in specifying asphalt pavement work to avoid any confusion or misinterpretation of the material desired. H.M.A.C. is produced in many different grades from coarse base mixes to specialized mixes for surfacing and repair. In most instances the grades are specified according to state department of transportation guidelines.
Joints: An asphalt joint is the area where two different “pulls” of asphalt meet. This area is usually highly visible after the paving operation and is sometimes referred to as a “seam.”
Lane Joint Cracks: longitudinal separations along the seems between two paving lanes.
Lift: A layer or course of paving material applied to a base or a previous layer. Polished aggregate: aggregate particles in a pavement surface that have been worn smooth by traffic.
Reflection Cracks: Cracks in asphalt overlays that reflect the crack pattern in the pavement structure below it.
Seal Coating: Application of a sealant (usually coal-tar emulsion or asphalt emulsion type) to preserve, protect, and beautify asphalt pavements. Generally used on low traffic streets or off-street locations.
Stone Base: The layer in the pavement system below the asphalt binder and driving surface. The base usually consists of crushed stones of varying sizes and gradations.
Subbase The course in the asphalt pavement structure immediately below the base course. If the subgrade soil has adequate support, it may serve as the subbase.
Subgrade: The soil prepared and compacted to support a structure, slab or pavement system.
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