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BRA-59 Limerock Bearing Ratio (LBR) Mold Assembly consists of the Mold Body, Compaction Collar, and Base used to mold LBR samples. BRA-62 LBR Spacer is required and purchased separately. The mold is 6x6in (152x152mm) Dia.xH and the base is perforated as required in the test method. The base has threaded rods and wing nuts to secure the mold and collar for compaction operations. Collar is 2.375in (60mm) high. The collar is interchangeable between Gilson CBR and LBR compaction molds. The assembly can be used with Soil Compaction Hammers or with the HM-530 Mechanical Soil Compactor.
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