20mm Crushed Concrete Class 2, 3 & 4

Department of Transport (formerly Vic Roads) registered – Our 20mm Class 2, Class 3 and Class 4 crushed concrete meets the Department of Transport specifications (Section 812, 815 & RC 500.02).

Uses – These materials are generally used as road base/subbase, hardstand for slab preparation, pipe bedding, and backfill.

This Product Data depicts averaged, typical testing values only

20mm Crushed Concrete
Test Class 2 Class 3 Class 4
Plasticity Index (%) Non-Plastic Non-Plastic 4
CBR % 180 180 120
Compaction Method Modified AS 1289 5.2.1 Modified AS 1289 5.2.1 Modified AS 1289 5.2.1
Maximum dry density (t/m3) 1.98 1.98 2.02
Optimum moisture content (%) 12.5 12.5 10.5
Particle Size Distribution (AS 1141.11.1 – Washed)
Sieve Size
AS (mm) (% passing) (% passing) (% passing)
26.5 100 100 100
19 99 99 100
13.2 86 86 89
9.5 72 72 76
6.7 60 60 66
4.75 50 51 57
2.36 38 38 45
0.425 19 18 24
0.075 7 6 11