Insitu-Asphalt Material Requirements
Aggregate: The Insitu-Asphalt mixture utilizes three sizes of stone aggregate, 9.5mm & 6.7 mm roadstone plus crusher sand.
Aggregate Grading
Sieve size | Nominal size of stone (percentage passing sieve) |
9.5mm | 6.7mm | Crusher Sand | |
13.2 | 100 | ||
9.5 | 85-100 | 100 | |
6.7 | 0-30 | 85-100 | |
4.75 | 0-5 | 0-30 | 90-100 |
2.36 | 0-5 | – | |
0.15 | 0-20 | ||
0.075 | 0-10 |
Bitumen
An anionic stable grade bituminous emulsion containing a 60% nett bitumen content is used as the binder. The emulsion should conform to SABS 309 specification.
Physical and chemical properties:
Min | Max | |
|
||
|
– | – |
|
60 | 62 |
|
– | 0.25 |
|
– | Nil |
|
– | – |
|
– | – |
|
– | 2 |
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