Posts Tagged ‘proper maintenance’

Crack Sealing: An indispensable pavement protection procedure

Thursday, May 31st, 2012

There is no argument that all asphalt cement (AC) pavements crack. Cracks in asphalt pavements are inevitable. Neglect and lack of proper maintenance lead to accelerated cracking and/or potholing, further reducing the serviceability of the pavement. There are numerous reasons, which can be broadly categorized, in four distinct classes.

  • Pavement Construction: Examples in this category include flaws in the selection of the right type of asphalt mix, poor mix design, engineering defects, unsuitable ambient conditions, etc. If all of these factors meet design criteria, bpoor workmanship may be considered as a cause for premature failure of the pavement.
  • Traffic Frequency & Load: Fatigue cracking and rutting are the two principal considerations in the pavement design process because they are the primary mode of deterioration of asphalt pavements.
  • Deterioration of the asphalt cement binder, primarily due to weathering under the degrading effects of ultraviolet radiation.
  • Climatic conditions, and pavement expansion and contractions due to temperature variations, and freeze thaw cycles.

Once cracks develop, water easily penetrates into the base and sub-base of the pavement and damages the structural integrity of the aggregate materials. Pavement joint and crack sealants are designed to protect the pavement by minimizing water infiltration and by preventing the accumulation of debris. It has been amply demonstrated and documented that sealing cracks in flexible pavements is a sound preventive maintenance procedure, which adds many years to the life of the pavement, especially when used in conjunction with other preventive techniques such as slurry seal, chip seals and sealcoating.

  • Crack sealing is one of the most cost-effective ways to prolong the pavement life, as much as 3- 8 years.

To help prolong, improve or replace the pavement in your world, contact the experts!

If you have any further questions about Asphalt Crack Sealing or have a project that you need completed, then contact PTG Enterprises aka My Pavement Guy today by calling 410-636-8777 or click here today! The asphalt experts here have managed hundreds of pavement projects and have the experience you need.

Give me the opportunity to impress you. I can be your one stop ‘Pavement Guy,’ for any pavement project regardless of size or scope.

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The Deterioration of Asphalt Pavement and its Causes

Thursday, July 21st, 2011

Even the most durable paved surfaces, like asphalt pavement, are susceptible to deterioration, distress, and cracking. However, knowing what causes these problems can help you prolong the life of your asphalt. This article from can help. It outlines the major causes of pavement deterioration.

Overtime, the materials that make up asphalt begin to break down and become more easily affected by the elements: rain, sunlight, snow, etc. Furthermore, the liquid binder that holds the asphalt together begins to lose its natural resistance to water, allowing liquid to seep into the pavement. Once this happens, the surface can quickly be affected.

Yet, while pavement will naturally breakdown over time, there are a few outside factors – poor construction or human error – that may speed up this process, causing premature deterioration.

The factors leading to asphalt deterioration include:

•      Insufficient or improperly compacted base below the asphalt

•      Over or under compaction of asphalt

•      Improper temperature of asphalt when applied

•      Poor drainage

•      Water – over time and especially without proper maintenance water penetrates the asphalt, washes out the base underneath it, causing it to crack, break down and collapse.

•      Sunlight – Oxidation breaks down and dries out the once flexible liquid asphalt that holds the aggregate together. This causes raveling and shrinking cracks, which allow water to penetrate beneath the surface.

•      Chemical/ petroleum exposure – the introduction of chemicals to asphalt, including gas and oil, can soften the asphalt and cause it to break down more rapidly.

When asphalt pavement is constructed and maintained properly it wears out slowly and can last up to 25 years or more. Proper maintenance is key to protecting it from the external factors that wear it out.

If you notice your driveway, parking lot, or any pavement displaying any signs of deterioration, it is probably time to call a professional to patch your asphalt and prevent further damage. Do not put this off and let small cracks become big problems. It is far better to pay for a little patching now than to have to pay for a total re-paving down the road.

If you have any questions, contact PTG Enterprises aka My Pavement Guy by calling 410-636-8777 or click here

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