alligator cracking severity levels

Alligator Cracking & Severity

The cracking pattern will begin to resemble the scales on the back of a crocodile or alligator Asphalt contractors classify the severity of alligator cracking into three levels • Low-level alligator cracking features parallel cracks with few or no transverse cracks • Medium-level alligator cracking displays multiple transverse cracks.

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PAVEMENT CONDITION RATING

Severity Level: Severity is based upon both crack width and multiplicity of the cracking Both criteria must be satisfied when assigning severity level Low-- Single or intermittent multiple cracking with average crack width less than 1/4 inch (6 mm) Medium-- Single or multiple cracking.

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Fractal Assessment of the Level of Alligator Cracking in

Fractal Assessment of the Level of Alligator Cracking in Pavements , The alligator crack distress index involves the visual evaluation of the crack severity of a section of a pavement as being low, medium, or high This evaluation is then integrated into a formula in order to obtain the alligator crack.

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What to Do When You See Alligator Cracking in Asphalt

Here is the information you need to know about alligator cracking, from causes to repair and everything in between The Causes Of Alligator Cracking Unlike surface-level asphalt damage, fatigue cracking is almost always caused by problems beneath the asphalt in the underlying layers.

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Pavement Management Program

Pavement Management Program Maintenance Division Local Assistance Division Local Government Workgroup Meeting , Example of Alligator Cracking Alligator Cracking - Severity Level 3 Example of Transverse Cracking Example of Longitudinal Cracking Longitudinal Cracking - Severity Level 2.

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Asphalt Distresses Block Cracking

This type of distress differs from alligator cracking in that alligator cracks form smaller, many-sided pieces with sharp angl Also, unlike blocks, alligator cracks are caused by repeated traffic loadings, and are therefore found only in traffic areas (ie, wheel paths) Severity Levels:.

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Severity Levels

Alligator cracking is measured in square feet of surface area The major difficulty in measuring this type of distress is that many times two or three levels of severity exist.

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3 Road Surface Guide

the crack unless crack is low in severity and filled The filler must be in satisfactory condition If applying transverse markings over the crack, the marking must be cut a minimum of 1 in (25 cm) back from each side of the crack At high severity levels, the road surface should not be marked with Stamark tape Name of Distress Alligator.

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Pavement Scores Synthesis

alligator cracking, TxDOT uses percent of wheel path in a 05-mile section to measure the extent of alligator cracking distress) Severity—the degree of distress (eg, rutting can be measured at 50 percent of wheel path [extent], but severity is addressed by measuring the depth of rut).

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Description of Distresses in Local Pavements

should not be confused with alligator cracking that is found in wheel track cracking If map cracks exist in the wheel path, they should be rated as wheel track cracking Severity Level: Low-- Average size of block formed is greater than 5' x 5', but less than 9' x 9' Medium-- Average size of block formed is greater than 1' x 1', but less than.

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Pavement Surface Condition Rating Manual

Severity The definition of severity for a given defect varies with each distress and is generally a measure of how badly or to what intensity a given defect has deteriorated Examples are crack widths, crack deterioration or spalling, and loss of materials See also “Rating Considerations” Extent Extent is the measure of area, length, or count.

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ASPHALT SURFACED AIRFIELDS

levels of severity cannot be easily divided, the entire area should be rated at the highest severity level present If alligator cracking and rutting occur in the same area, each is recorded separately at its respective severity level.

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Distressed Pavements Identification

severity level of a crack, in this case block cracking, due to associated random cracking A 2 Cracking FIGURE 1 Measuring Crack Width in Asphalt Concrete-Surfaced Pavements FIGURE 2 Effect on Severity Level of Block Cracking due to Associated Random Cracking Distressed Pavements Identification Ezekiel Enterprises, LLC.

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UFC 3-270-06 Paver Asphalt Surfaced Airfields Pavement

Alligator cracking and rutting in same area Record each separately at respective severity level 2 Bleeding counted in area , patch severity level 5 Block cracking is recorded No longitudinal and transverse cracking should be recorded Does not apply to asphaltic concrete (AC) over portland.

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Pavement Management Index Values

Distress Description Severity Level Deduct Point (DP) Factor Pavement Type Fatigue (Alligator) Cracking 0 04 FLEX Fatigue (Alligator) Cracking 1 05 FLEX Fatigue (Alligator) Cracking 2 06 FLEX Block Cracking 0 016 FLEX Block Cracking 1 025 FLEX Block Cracking 2 034 FLEX Longitudinal Cracking 0 03 FLEX Longitudinal Cracking 1 065 FLEX.

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Severity Levels: Alligator fatigue cracking is a series of interconnecting cracks caused by fatigue failure of the asphalt concrete surface under repeated traffic loading Cracking begins at the bottom of the asphalt surface (or stabilized base) where tensile stress and strain are highest under a.

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Washington Airport Pavement Management Manual

Washington Airport Pavement Management Manual Preface Applied Pavement Technology, Inc iv PREFACE Washington’s airport system represents a tremendous capital investment and plays a.

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PAVEMENT CONDITION RATING

Severity Level: Severity is based upon both crack width and multiplicity of the cracking Both criteria must be satisfied when assigning severity level Low-- Single or intermittent multiple cracking with average crack width less than 1/4 inch (6 mm) Medium-- Single or multiple cracking.

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APPENDIX B

from alligator cracking in that alligator cracks form smaller, many-sided pieces with sharp angl Also unlike block cracks, alligator cracks are caused by repeated traffic loadings and are, therefore, located only in trafficked areas, ie, wheel paths Severity Levels:.

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Fatigue Cracking in Asphalt

Roads with fatigue cracking in asphalt show three types of deterioration The Distress Identification Manual for the Federal Highway Administration’s Long-Term Pavement Performance Program discusses this in more detail This type of deterioration is identified separately as low, moderate and high severity levels of such stress.

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Distress & Fix Selection Signs of Pavement and Bridge

Description: A low severity transverse crack is defined as an unsealed crack, with a mean width of ¼ inch or less or a sealed crack with sealant material in good condition and indeterminate width.

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Pavement Surface Condition Rating Manual

Severity The definition of severity for a given defect varies with each distress and is generally a measure of how badly or to what intensity a given defect has deteriorated Examples are crack widths, crack deterioration or spalling, and loss of materials See also “Rating Considerations” Extent Extent is the measure of area, length, or count.

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Pavement Surface Condition Field Rating Manual for Asphalt

Option B — Measurement for Alligator Cracking Extent: The extent of alligator cracking is related to the entire survey area Measure: Alligator Cracking is measured in square feet The major difficulty in measuring this type of distress is that two or three levels of severity often exist within one distressed area If these portions can be easily.

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