Lesson 1/Learning Event 2
Learning Event 2
IDENTIFY ELEVEN FACTORS USED TO EVALUATE A QUARRY SITE
FACTORS AFFECTING SUITABILITY OF MATERIALS
Quality of Material. The intended use of the material is the determining factor in the quality required.
In general, materials used for fills and subgrades do not have to meet the same specifications as those
used for compacted rock surfacing, base courses, or pavements.
Seven properties of rocks are used to help select rock and aggregates for construction. Briefly, these
rock properties are: toughness, hardness, durability, chemical stability, crushed shape, surface character,
and density. Toughness, hardness and durability are commonly checked in the field with simple field
tests.
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