SECTION B - Derry City Council

APPENDIX 1/5: TESTING TO BE CARRIED OUT BY THE CONTRACTOR (CONTINUED)
Clause Work, Goods or Material Test Frequency of Testing Test Certificate Comments
Series 900 (Continued)
Vialit cohesion
Per product per
source
Required
Tests are expected to be
repeated every two years
Rate of spread For each machine Required Not more than 6 weeks
prior to start of work
Penetration at 25oC
and 5oC (N)
Every manufactured
batch
Manufacturer’s QA test
results may be submitted
Aggregates Flakiness index (N) 1 per source Required
Resistance to
polishing (AAV) (N)
Source approval
Required
Resistance to surface
abrasion (AAV) (N)
Source approval
Required
Grading (N) 1 per 200 tonnes Required
System
TAIT or BBA/
HAPAS
Required
920 Bond coats, tack coats and other
bituminous sprays
Binder Product identification 1 per product per
source
Required
Tests are expected to be
repeated every two years
Vialit cohesion
1 per product per
source
Required
Tests are expected to be
repeated every two years
Accuracy of spread
1 for each binder and
sprayer per month
Required
Not more than 6 weeks
prior to start of work and
one per month
Rate of spread
1 per week
Penetration at 25ºC and
5ºC (N)
Every manufactured
batch
Manufacturer’s QA test
results may be
submitted.
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