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Guidelines for Detection, Analysis, and Treatment of Materials-Related Distress in Concrete Pavements Vol II

Publication Number: FHWA-RD-01-164
Date: March 2002

Figure I-13

Figure I-13: Graphic. Distress map symbols for CRCP (adapted from SHRP 1993). This figure shows 10 CRCP distress map symbols used to indicate various types of distress and their level of severity when sketching pictures of pavement. On a sketch, the symbol would be drawn and the distress type number and its level of severity would be indicated if appropriate. Severity is expressed with the letters L, M, or H, corresponding to low, moderate or high levels of severity. The table below contains the distress number, its name, a description of the symbol, a column to note when the distress severity level should be indicated with the distress number, and a column to note other indications that go with the distress number. (Note that the numbers do not follow numerical order.)

Distress Number	Distress Name	Symbol Description	Severity Indication	Other Indications
2	Longitudinal cracking	Vertical line at the crack site	L, M, H	Length of crack in meters; write the letter S on the map at the distress site if the crack is sealed
3	Transverse cracking	Horizontal line at the crack site	L, M, H	Number of cracks and length in meters
4a	Map cracking	Rounded plaid/ fishnet pattern	No severity levels	Square meters of distress
4b	Scaling	Rounded plaid/ fishnet pattern	No severity levels	Square meters of distress
5	Polished aggregate	Small diagonal lines	No severity levels	Square meters of distress
6	Popouts	Small ovals drawn at an angle	No severity levels	Number
7	Blowups	Curved line over joints	No severity levels	Number
8	Transverse construction joint deterioration	Small X’s below joint at site of deterioration	L, M, H	Number
11	Patch/Patch deterioration	Shaded square over patched area	L, M, H	Square meters and number of patch; indicate on map an F if flexible or an R if rigid.
12	Punchouts	Two horizontal, parallel lines with diagonal lines drawn between the parallel lines at punchout site	L, M, H	Number
13	Spalling of longitudinal joints	Series of small, vertical circles around the joint	L, M, H	Length in meters
14	Water bleeding and pumping	Arrowhead pattern drawn on the crack	No severity levels	Number of occurrences; length of affected pavement in meters
15	Longitudinal joint seal damage	Small horizontal lines drawn over longitudinal joint	No severity levels	Length of damage in meters

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Page Owner: Office of Research, Development, and Technology, Office of Infrastructure, RDT

Topics: research, infrastructure, pavements and materials
Keywords: research, infrastructure, pavements and materials
TRT Terms: research, facilities, transportation, highway facilities, roads, parts of roads, pavements, Concrete--United States--Testing, Pavements, Concrete--United States--Maintenance and repair, Concrete pavements, Portland cement concrete, Pavement distress
Scheduled Update: Archive - No Update needed

This page last modified on 03/08/2016