ASTM method News
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ASTM D3171 - 11 standard test methods for constituent content of composite materials
A constituent content of a composite material must be known in order to analytically model the material properties (mechanical, physical, thermal, or electrical) of the composite which are affected by the reinforcement or matrix. Also, knowledge of the constituent content is required for ...
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ASTM C365 / C365M - 11a standard test method for flatwise compressive properties of sandwich cores
Flatwise compressive strength and modulus are fundamental mechanical properties of sandwich cores that are used in designing sandwich panels. Deformation data can be obtained, and from a complete force versus deformation curve, it is possible to compute the compressive stress at any applied force (such as compressive stress at proportional ...
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ASTM C393 / C393M - 11 standard test method for core shear properties of sandwich constructions by beam flexure
Flexure tests on flat sandwich construction may be conducted to determine the sandwich flexural stiffness, the core shear strength and shear modulus, or the facings compressive and tensile strengths. Tests to evaluate core shear strength may also be used to evaluate core-to-facing bonds. This test method is limited to obtaining the core shear ...
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ASTM D3744 / D3744M - 11a Standard Test Method for Aggregate Durability Index
This test method assigns an empirical value to the relative amount, fineness, and character of clay-like material that may be generated in an aggregate when subjected to mechanical degradation. The procedure has been used in limited geographical areas of the United States and the results have been correlated with aggregate performance in various ...
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ASTM E2478 - 11 Standard Practice for Determining Damage-Based Design Stress for Glass Fiber Reinforced Plastic (GFRP) Materials Using Acoustic Emission
The damage-based design approach will permit an additional method of design for GFRP materials. This is a very useful technique to determine the performance of different types of resins and composition of GFRP materials in order to develop a damage tolerant and reliable design. This AE-based method is not unique, other damage-sensitive evaluation methods can also be ...
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ASTM D4634 - 11a standard classification system and basis for specification for styrene-maleic anhydride molding and extrusion materials (S/MA)
This specification covers styrene-maleic anhydride materials suitable for molding and extrusion. It does not however apply to alloys or blends of styrene-maleic anhydride materials with non-elastomeric thermoplastics. The materials shall be conditioned and tested for physical and mechanical properties in the standard laboratory atmosphere. Test specimens and testing parameters for the ...
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ASTM E2128 - 12 Standard Guide for Evaluating Water Leakage of Building Walls
This guide is intended to provide building professionals with a comprehensive methodology for evaluating water leakage through walls. It addresses the performance expectations and service history of a wall, the various components of a wall, and the interaction between these components and adjacent construction. It is not intended as a ...
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ASTM D4762 - 11a standard guide for testing polymer matrix composite materials
This guide is intended to aid in the selection of standards for polymer matrix composite materials. It specifically summarizes the application of standards from ASTM Committee D30 on Composite Materials that apply to continuous-fiber reinforced polymer matrix composite materials. For reference and comparison, many commonly used or applicable ASTM standards from other ASTM ...
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ASTM D4595 - 11 Standard Test Method for Tensile Properties of Geotextiles by the Wide-Width Strip Method
The determination of the wide-width strip force − elongation properties of geotextiles provides design parameters for reinforcement type applications, for example design of reinforced embankments over soft subgrades, reinforced soil retaining walls, and reinforcement of slopes. When strength is not necessarily a design consideration, ...
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ASTM C140 - 12 Standard Test Methods for Sampling and Testing Concrete Masonry Units and Related Units
These test methods provide general testing requirements for application to a broad range of concrete products. Those general testing requirements are included in the body of this standard. Note 2—Consult manufacturer, supplier, product specifications, or other resources for more specific measurement or testing guidelines for those products not addressed with the annex of this ...
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ASTM D7747 - 11 standard test method for determining integrity of seams produced using thermo-fusion methods for reinforced geomembranes by the strip tensile method
The use of reinforced geomembranes as barrier materials has created a need for a standard test method to evaluate the quality of seams produced by thermo-fusion methods. This test method is used for quality control purposes and is intended to provide quality control and quality assurance personnel with data to evaluate seam quality. This standard arose from the need for a destructive test method ...
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ASTM D6916 - 06c(2011) standard test method for determining the shear strength between segmental concrete units (Modular Concrete Blocks)
The shear strength between segmental concrete units (with and without geosynthetic reinforcement) and is used in design of reinforced soil retaining walls. This test is used to determine the shear strength for the design of the facing stability of segmental retaining walls. Performing a series of these shear tests at varying normal ...
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Tension Creep Testing in Geomembranes
Creep, the tendency of materials to deform over time due to applied stresses, has been a focus of the geosynthetics industry since testing first began more than 25 years ago. Creep testing methods have evolved, but the accurate assessment of tension creep (along with transmissivity) remains essential to the product evaluations of organizations considering geomembrane/geocomposite drainage ...
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