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Description of ASTM-E3331 2022ASTM E3331-22aRedline Standard: Standard Test Method for Measuring Target Modulus Using Light Weight Deflectometer (LWD) on Compacted Proctor Mold SamplesASTM E3331Scope 1.1 This test method describes the procedure to determine the target modulus (or deflection) required for compaction quality control of geomaterials using light weight deflectometer (LWD) drops on a compacted proctor mold in the laboratory.2 1.2 The same LWD type in terms of brand name, buffer stiffness, and deflection measurement location (on top of the plate or on top of the soil layer) used for the laboratory target modulus testing must be used during the field testing. This is to eliminate differences between measurements from different devices. 1.3 This procedure shall be performed in the laboratory on representative soil samples before the field compaction operations. 1.4 Gradation, moisture content inconsistency, and surface texture on the mold can affect the material moduli results. 1.5 The target surface modulus values can be compared to the field-measured modulus for compaction quality control/quality assurance purposes. 1.6 This test method covers the determination of the relationship between moisture content and modulus of unbound granular material using the light weight deflectometer (LWD) on laboratory compaction samples. 1.7 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. The values given in parentheses are for information only. 1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.9 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. Keywords compaction QC/QA; light weight deflectometer (LWD); nondestructive testing (NDT); pavement deflection; pavement foundation layer; portable falling weight deflectometer (PFWD); portable impulse plate load; stiffness; target modulus; ICS Code ICS Number Code 17.100 (Measurement of force, weight and pressure) DOI: 10.1520/E3331-22A This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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