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8-
Ordinary Maintenance OM3 applied to pavement in fair condition: This
treatment type preserves pavement in fair condition. 9-
Ordinary Maintenance OM4 applied to pavement in good condition:
This treatment type preserves pavement in good condition.
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CHAPTER 3
METHODOLOGY
3.1 PCI Method
The PCI is a numerical indicator that rates the surface condition of the pavement. The PCI provides a measure of the present condition of the pavement
based on the distress observed on the surface of the pavement, which also indicates the structural integrity and surface operational condition localized roughness and
safety. The PCI cannot measure structural capacity nor does it provide direct measurement of skid resistance or roughness. It provides an objective and rational
basis for determining maintenance and repair needs and priorities. Continuous monitoring of the PCI is used to establish the rate of pavement deterioration, which
permits early identification of major rehabilitation needs. The PCI provides feedback on pavement performance for validation or improvement of current pavement design
and maintenance procedures ASTM D6433, 1999. The determination of the Pavement Condition Index PCI is often a useful
tool in the evaluation of road pavements. The PCI is a numerical rating of the surface condition of a pavement and is a measure of functional performance with implications
of structural performance. PCI values range from 100 for a pavement with no defects to 0 for a pavement with no remaining functional life. The index is useful in
describing distress and comparing pavements on an equal basis. ASTM standard contains information on PCI surveys. The FAA recommends that roads follow ASTM
D 6433, Standard Test Method for road Pavement Condition Index Surveys ASTM D6433, 1999.
ASTM’s manual is prepared to assist user of the Pavement Management System PMS in identifying surface distress in a uniform and repeatable manner. The
distresses included in this manual are used to calculate the Pavement Condition Index PCI for pavements surfaced with asphalt concrete and surface treatments.
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This practice covers the determination of roads and parking lots pavement
condition through visual survey using the Pavement Condition Index PCI method of
quantifying pavement condition. The PCI for roads and parking lots was developed by the U.S Army Corps Engineers ASTM D6433, 1999.
3.2 Data requirement
The type of data collection is primary data from the field, as known the part was taken by a length of 1000 km. Recorded data for each type, calculated the area
affected and recorded in special tables. And took a picture of each level of severity. The data collected using survey method by some people. The data requirement for this
study is Type and severity levels of distress.
3.3 Data collection equipment
1. Data Sheets: for recording the following information:
Date, location, branch, section, sample unit size, slab number and size,
distress types, severity levels, quantities, and names of surveyors. As show
in Figure 3.1. 2.
Digital Camera: for take some photos. 3.
Hand Odometer Wheel. 4.
Layout Plan, for network to be inspected. 5.
Safety equipment.
