ORANGE, COUNTY OF (PUBLIC WORKS MATERIALS LABORATORY)

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OC Public Works Materials Laboratory Geotechnical Engineering and Materials Laboratory TestingServices Page 2 of 4 • Moisture content • Cleanness value • Percent (%) Organics • Plasticity index R-Value & Concrete Strength: This unit provides R-value testing for design of road structural sections. This unit also provides PCC cylinder compression testing for required concrete strength. The following tests are conducted in this unit: • R-Value • PCC Cylinder compressive strength • Wet track abrasion Compaction/AC Compaction: This unit provides field testing with a nuclear density gauge to determine in -place density and moisture of soil, aggregate base, and asphalt to determine relative compaction of the materials. The following tests are conducted in this unit: • Relative compaction • In -place max density • Soil compaction using nuclear gauges • Asphalt compaction using nuclear gauges Asphalt: This unit provides for preparation of the samples for testing and Q/A testing of asphalt. The following tests are conducted in this unit: • Preparation of Bituminous mixtures • Specific gravity • Stability value (S-Value) • Asphalt binder content by ignition Plant Inspection: This unit provides of materials inspection at concrete and asphalt plants. This may also include materials inspection on jobsites from stockpiles and/or fresh asphalt materials. The following activities and tests conducted by this unit include: • Sampling of stockpile (aggregate base, bedding sand, backfill) materials onjobsite • Sampling PCC aggregates at the plant • Sampling asphalt aggregates at the plant • Collecting field samples of asphaltconcrete • PCC sampling and cylinder fabrication • Testing the slump of fresh PCC • Witnessing D-load testing for Reinforced Concrete Pipe (RCP) OC Construction 1152 East Fruit Street, Santa Ana, CA 92701 http://occonstruction.ocpublicworks.com 714.245-4500 1 lnfo@OCPW.ocgov.com