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Aggregate impact testing of selected granite samples from sites in Kwara state of Nigeria
Abstract
The Aggregate Impact Testing machine was used to measure the resistance to fa ilure of Rocks from five (5) selected granite quarries to a suddenly applied force using S ingapore standard. The results obtained show that brittleness (S20) value of the rocks were between 2 - 10. These values are less than the stated brittleness value S20 of 40-60 required for road construction aggregates, hence, the gran ite samples selected did not meet this requirement. It is therefore recommended that the rocks from these s ites should not be used for road construction and similar test should be performed by construction industries to ensure that only rocks that meet brittleness value for roads, airports and railways are used for the purpose.
