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)
919
922 Surface Dressing National quality
management sector
scheme applies
Binder
Chippings
Product Identification
Vialit cohesion (N)
Accuracy of spread
Rate of spread
Penetration at 25ºC and
5ºC (N)
Resistance to (PSV)
polishing (N)
Resistance to abrasion
(AAV) (N)
1 per product per
source
1 per product per
source
1 for each binder
sprayer per week
Every 1000 linear
metres initially
Every batch
Source approval
Source approval
Required
Required
Required
Required
Required
Required
Grading (N) 1 per 200 tonnes Required
Modified binders should
have a BBA HAPAS
Roads and Bridges
Certificate. In the event
that no such Certificates
have been issued, then
in the interim, only
modified
binders undergoing BBA
assessment should be
considered for approval
by the Overseeing
Organisation.
Tests are expected to be
repeated every two years
Tests are expected to be
repeated every two years
Not more than 6 weeks
prior to start of work and
one per week
Frequency to be reduced
to daily after 3
satisfactory results, but
not less than 1 test per
site
For cut back binders as
supplied, manufacturer’s
QA viscosity test results
may be submitted.
Binder content (N) 1 per 200 tonnes Required Coated chippings only
Flakiness index (N) 1 per 200 tonnes Required
Accuracy of spread (N)
Rate of spread
1 for each chipping
spreader for every
change of chipping size
of source
Every 500 linear metres
initially
Required
Required
System TAIT or BBA/HAPAS Required
Rollers Spray bars working Before work starts and
daily during works
Initial test not more than
6 week prior to start of
work
Frequency to be reduced
to daily after 3
satisfactory results, but
not less than 1 test per
lane per site
950 Depressions BBA HAPAS Roads and
Bridges certification (or
equivalent) applies
132