0-Condition INDEX

Condition Index. Shell volume, determined volumetrically, and tissue mass were measured for determination of the condition index (9). Tissue (g) divided by shell volume (ml) yielded the index which ranged between 0.45 and 0.60. 

T absolute temperature S entropy stream E energy stream Index 0 ambient conditions Index kin kinetic (energy) Index pot potential (energy)). 

Number Eigenvalue Condition index Var prop intercept Var prop height Var prop weight ... 

Chapter 9 will discuss how we can evaluate the current condition, develop a condition index and extrapolate forwards and backwards to predict future deterioration. 

Cracking and spalling rates, condition indexes and end of functional service life... 

In a separate SFIRP study (Purvis et al., 1994) a condition index S was derived ... 

No attempt was made to define an end of service Ufe as this was used as part of a life-cycle cost analysis study where repair or rehabilitation was conducted according to the minimum cost criterion. It was suggested that the condition index should never exceed 45%. 

The authors also su ested that chloride contamination (percentage above the corrosion threshold) increases Hnearly from 0 at condition index 0-100% at condition index 20. 

In the SHRP study the condition index was calculated as a function of time by fitting it to a curve of the form ... 

The variance-decomposition proportions are shown in Table 3. Two condition indexes (C.I.) are greater than 15 (27.5 and 59.7). With the first of these indexes, we have the four variables X5, xg, xy, and xn with proportions in excess of 0.5 consistent with one of the two multicolinearity structures... 

In the case of quantitative rating of the pavement condition, the relevant condition index or distress level is determined. 

The most well-known pavement condition index (PCI) after visual survey is the one described in ASTM D 6433 (2011). PCI values range from 0 to 100. In particular, when PCI is >85, the pavement is characterised as good when PCI is 70 to 85, the pavement is characterised as satisfactory when PCI is 55 to 69, the pavement is characterised as fair when... 

ASTM D 6433. 2011. Standard practice for roads and parking lots pavement condition index surveys. West Conshohocken, PA ASTM International. 

A prediction model of the composite distress index PCI (pavement condition index), when properly developed, can also be used in PMSs. A successful example is the PCI prediction model developed and incorporated in the MicroPaver software (Shahin 2005). 

---