Abstract:Construction materials Aggregate Road metal Aggregate Mineral filler Road metal Mineral filler Volcanic ash Aggregate Road metal Volcanic ash Structural stone Riprap Road meta! Aggregate Calcareous binder Calcareous binder Road metal Structural stone Riprap ' High percentage of mortar bed fragments in coorse fraction. Low compressive strength. Same chert nqted, presumably in coarse fraction. Limestone pebbles noted in coarse fraction. Some soft limestone pebbles. High percentage of wash. Overburden may be too … Show more
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