Hot Rolled Asphalt and Asphalt Concrete (Macadam) - Ministry of ...

Specification 12 Hot Rolled Asphalt and Macadam for Airfields 3 Constituent Materials
TABLE 3.2 REQUIRED PROPERTIES FOR COARSE AGGREGATES
Property Test Method Aggregate type
Resistance to
freezing and thawing
BS EN 1367-2/
Hot Rolled
Asphalt
Material
Asphalt
Concrete
(Macadam)
Pervious
Macadam
Each source MS18 MS18 –
Appendix A ‡ Each fraction MS30 MS30 –
Shape BS EN 933-3 All FI35 FI35 FI35
Resistance to
fragmentation
BS EN 1097-2
Water absorption BS EN 933-3
Affinity between
aggregate and
bitumen
Resistance to
Polishing
BS EN 12697-11
Part B
BS EN 1097-8
All except gravel LA30 LA30 LA30
Gravel n/a LA25 n/a
All except slag WA242 WA242 WA242
Blast furnace slag n/a WA244 WA244
All Not greater than 6 particles from a 150
particle test sample
Runway surface course PSVdeclared* PSVdeclared * –
Taxiway surface course PSVdeclared * PSVdeclared * –
Sulfur Content BS EN 1744-1 Blast furnace slag n/a ≤ 2 % ≤ 2 %
Volume Stability BS EN 1744-1 Blast furnace slag n/a V 3.5 V 3.5
Bulk Density BS EN 1097-6 Blast furnace slag n/a ≥ 1.12 Mg/m³ ≥ 1.12 Mg/m³
‡ BS EN 1367-2: 1998 is restricted to the 14/10 mm fraction but, for this purpose, the same techniques
shall also be used for other fractions of the coarse aggregate. Advice on the use of the test with nonstandard
aggregate fractions is given in Appendix A.
– No category or limit.
* Project Manager to provide value for specific job specification; advice given in Clause Z.5 of
Appendix Z.
n/a Not applicable.
3.3 FINE AGGREGATES
3.3.1 Subject to the limitations set in Table 3.1,
fine aggregates shall be:
• natural bank, river, dune, or pit sand;
• blast furnace or steel slag;
• crushed rock; or
• blends of sand, slag and crushed rock
and shall be free from loosely bonded
aggregations and other foreign matter. Seadredged
sand shall not be permitted.
3.3.2 The properties of the fine aggregate shall
conform to the BS EN 13043 Categories shown in
Table 3.3.
3.4 ADDED FILLER
3.4.1 All filler aggregate used in the Hot Rolled
Asphalt and Asphalt Concrete (Macadam) shall be
CE marked.
3.4.2 The type of filler aggregate to be used for
a particular material shall be selected from the
alternatives in Table 3.4.
3.4.3 Filler aggregate shall be stored in dry
conditions.
3.4.4 The grading of added filler aggregate
shall conform to Clause 5.2.1 of BS EN 13043.
3.4.5 The loose bulk density in kerosene of
added filler aggregate, other than hydrated lime,
shall be in accordance with Clause 5.5.5 of
BS EN 13043.
3.4.6 A copy of all filler aggregate delivery
tickets shall be passed to the Project Manager on
a regular basis during production, for his retention.
8 July 2010