Increased use of stone for protection purposes and the related expectations of long design lives for slope and shore protection projects has lately required more attention to potential quarry sources and methods of evaluation of the material produced by these sources.

Neither field investigation nor laboratory testing of these sources, by itself, is sufficient to adequately evaluate such sources. Methods of field evaluation and related facts which must be considered are presented. These include lithologic logging, structural details, and evaluation of quarrying procedures (including blasting practices).

Laboratory methods and considerations which are discussed include petrographic studies, tests designed to simulate natural conditions of weathering (accelerated), bulk specific gravity, absorption, Los Angeles abrasion tests, and Brazilian Splitting Tensile tests. The relationship of these tests and their results to the predicted behavior of the stone is also discussed.

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