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Tests for Evaluating Degradation of Base Course Aggregates
Terry R. WestRobert Britten JohnsonNed Myron Smith
出版Highway Research Board, National Research Council, 1970
主題Mathematics / Set TheoryTechnology & Engineering / Engineering (General)Technology & Engineering / Civil / Highway & Traffic
ISBN03090188549780309018852
URLhttp://books.google.com.hk/books?id=bOhitTiLEJ4C&hl=&source=gbs_api
註釋A study was undertaken to develop procedures for predicting the amount and effects of degradation for different natural aggregates when used in a roadway base or subbase course, and thereby for determining their suitability, aggregate samples were collected from 140 quarries in 12 states, divided into four classes (carbonates and clastic sedimentaries, coarse-grained igneous and metamorphics, basalts and basalt-like rocks, and heterogenous gravels), and submitted to eight tests: percent loss, Los Angeles abrasion; freeze-thaw loss; specific gravity, percent absorption; insoluble residue; differential thermal analysis; x-ray diffraction analysis; and petrographic analysis, including a battery of tests for polished and thin section. Test conclusions regarding the four classes are given and discussed, and detailed data on samples are tabulated in appendices.