ASTM D6109 Flexural Properties of Unreinforced and Reinforced Plastic Lumber

Scope:

The ASTM D6109 test method provides details about the flexural properties of plastic lumber products. A standard is set up to evaluate the performance and reliability of such products. The recommendations for their improvement and better application are given based on the results obtained from this method. The fiber reinforcements and chemicals into the plastic lumber products are determined and adjusted for their efficient use—this further aids in quality control, research, development, acceptance, and rejection of plastic products.

Procedure:

The ASTM D6109 test apparatus consists of a testing machine, loading noses, and supports. The width of the specimen is determined, and the rate for a load span is measured. The loading noses and supports are carefully aligned, and load-deflection data is taken on applying load to the specimen. The slightly different method with the difference in the range of strain is followed if the position of the plastic lumber product is edgewise or joist. 

Specimen Size:

The specimen size is taken as per the ASTM D6109 test requirements. Five specimens are taken with lengths equal to twice their minimum cross-sectional dimensions.

Data:

The arithmetic mean denoted by X, the standard deviation denoted by S, and the secant modulus denoted by E are calculated by applying equations.

Read more: ASTM D6108 Compressive Properties of Plastic Lumber and Shapes

Conclusion:

ASTM D6109 test method determines the flexural properties of solid or hollow round, rectangular, and square plastic lumber products.