Construction Material Testing Service

Good Quality Coarse Aggregate (1)Ultra-lightweight Vermiculite, Ceramic Can be sawed or nailed, Also used for its insulating properties, (2)LightweightGs < 2.4Expanded perlite, shale or slate Burned clay Crushed brickStructural lightweight concrete 1350 to 1850 kg/m3 Masonry units Also used for its insulating properties (3)Normal weight2.4 < Gs < 2.8Crushed limestone, Sand, River gravel, Crushed recycled concreteUsed for normal concrete projects Produce normal-weight concrete 2200 to 2400 kg/m3 (4)HeavyweightGs > 2.8Steel or iron shot Steel or iron pelletsProduce high-density concrete up to 6400 kg/m3  Radiation shielding ??? counterweights  additional applications wherea high mass-to-volume ratio is desired Types of aggregates according to shape are classified as under, Rounded aggregates Irregular or partly rounded aggregates Angular aggregates Flaky aggregates Elongated aggregates Flaky and elongated aggregates