Sealed
surfacings performance is listed by life cycle costs ($/m2/yr) in order from
lowest to highest for sealed surfacings that have reached their end of life.
Also shown are the key variables affecting life cycle cost identified in
pilot council testing. The
preparation cost is an indication of the pavement renewal work completed in
preparation for the reseal.
Care
is to be taken in interpreting the performance reports as there are many factors
which affect life cycle costs including pavement strength, availability and cost
of aggregate materials, haul distance of bitumen and higher relative costs of
asphalt surfacing providing additional benefits above spray seals.
Surfacing
life cycle costs will be distinctly different for pavements on sound pavements
versus surfacings on weak pavement structures.
Weaker pavement will be identified in condition assessments by having
significant cracking, patching and loss of shape.
To see full details for each
example, click on the Council name hyperlink.
|
Council |
Old seal type |
LCC ($/m2/yr) |
Age of old seal (yrs) |
Traffic (AADT) |
% Heavy Vehicles |
Prep. Cost ($/m2) |
Condition of old seal at reseal |
|
Northern
Grampians (S) |
Single coat
sprayed seal |
$0.12 |
15 |
150-500 |
5-10% |
$0.09 |
Cracked |
|
Campaspe (C) |
Single coat
sprayed seal |
$0.14 |
11 |
50-100 |
0-1% |
$0.14 |
BSIS score
14-16 |
|
Campaspe (C) |
Single coat
sprayed seal |
$0.15 |
12 |
0-50 |
1-5% |
$0.17 |
BSIS score
12-14 |
|
Campaspe (C) |
Single coat
sprayed seal |
$0.15 |
16 |
150-500 |
1-5% |
$0.21 |
BSIS score
14-16 |
|
Campaspe (C) |
Single coat
sprayed seal |
$0.16 |
12 |
150-500 |
>10% |
$0.17 |
BSIS score
14-16 |
|
Northern
Grampians (S) |
Single coat
sprayed seal |
$0.18 |
12 |
150-500 |
5-10% |
$0.12 |
Worn |
|
Campaspe (C) |
Single coat
sprayed seal |
$0.18 |
13 |
150-500 |
5-10% |
$0.21 |
Cracked |
|
Campaspe (C) |
Single coat
sprayed seal |
$0.23 |
8 |
100-150 |
0-1% |
$0.17 |
Cracked |
|
Campaspe (C) |
Single coat
sprayed seal |
$0.23 |
10 |
50-100 |
1-5% |
$0.21 |
Cracked |
|
Manningham
(C) |
Dense graded
asphalt |
$0.65 |
20 |
150-500 |
1-5% |
$0.00 |
Cracked |