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ASTM D6109-2019 pdf free download

ASTM D6109-2019 pdf free download.Standard Test Methods for Flexural Properties of Unreinforced and Reinforced Plastic Lumber and Related Products
1. Scope
1.1 These test methods are suitable for determining the flexural properties for any solid or hollow manufactured plastic lumber product of square, rectangular, round, or other geomet- ric cross section that shows viscoelastic behavior. The test specimens are whole “as manufactured” pieces without any altering or machining of surfaces beyond cutting to length. As such, this is a test method for evaluating the properties of plastic lumber as a product and not a material property test method. Flexural strength cannot be determined for those products that do not break or that do not fail in the extreme outer fiber. 1.2 Test Method A, designed principally for products in the flat or “plank” position. 1.3 Test Method B, designed principally for those products in the edgewise or “joist” position. 1.4 Plastic lumber currently is produced using several dif- ferent plastic manufacturing processes. These processes utilize a number of diverse plastic resin material systems that include fillers, fiber reinforcements, and other chemical additives. The test methods are applicable to plastic lumber products where the plastic resin is the continuous phase, regardless of its manufacturing process, type or weight percentage of plastic resin utilized, type or weight percentage of fillers utilized, type or weight percentage of reinforcements utilized, and type or weight percentage of other chemical additives. 1.4.1 Alternative to a single resin material system, diverse and multiple combinations of both virgin and recycled thermo- plastic material systems are permitted in the manufacture of plastic lumber products. 1.4.2 Diverse types and combinations of inorganic and organic filler systems are permitted in the manufacturing of plastic lumber products. Inorganic fillers include such materi- als as talc, mica, silica, wollastonite, calcium carbonate, and so forth. Organic fillers include lignocellulosic materials made or derived from wood, wood flour, flax shive, rice hulls, wheat straw, and combinations thereof. 1.4.3 Fiber reinforcements used in plastic lumber include manufactured materials such as fiberglass (chopped or continuous), carbon, aramid and other polymerics; or lignocellulosic-based fibers such as flax, jute, kenaf, and hemp. 1.4.4 A wide variety of chemical additives are added to plastic lumber formulations to serve numerous different pur- poses. Examples include colorants, chemical foaming agents, ultraviolet stabilizers, flame retardants, lubricants, anti-static products, biocides, heat stabilizers, and coupling agents 1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.6 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 appro- priate safety, health, and environmental practices and deter- mine the applicability ofregulatory limitations prior to use. N OTE 1—There is no known ISO equivalent to this standard. 1.7 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
3. Terminology
3.1 Definitions: 3.1.1 Definitions of terms applying to these test methods appear in Terminology D883 and Guide D5033. For terms relating to precision and bias and associated issues, the terms used in this test method are in accordance with the definitions in Terminology E456. 3.1.2 plastic lumber, n—a manufactured product made pri- marily from plastic materials (filled or unfilled), typically used as a building material for purposes similar to those of tradi- tional lumber, which is usually rectangular in cross-section. (Terminology D883) Discussion—Plastic lumber is typically supplied in sizes similar to those of traditional lumber board, timber and dimension lumber; however the tolerances for plastic lumber and for traditional lumber are not necessarily the same. (Terminology D883) 3.1.3 resin, n—solid or pseudosolid organic material often of high molecular weight, that exhibits a tendency to flow when subjected to stress, usually has a softening or melting range, and usually fractures conchoidally. (Terminology D883) Discussion—In a broad sense, the term is used to designate any polymer that is a basic material for plastics.

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