Accession Number : AD0751107

Title :   Investigation of Nonmetallic Waterstops. Evaluation of the Effect-of-Alkalies and Accelerated Extraction Tests. Report 2.

Descriptive Note : Technical rept.,

Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS

Personal Author(s) : Pepper,Leonard

Report Date : MAR 1961

Pagination or Media Count : 33

Abstract : Nineteen nonmetallic waterstop materials, consisting of 10 standard or cold-weather PVC, two polyethylenes, and seven natural or synthetic rubbers, were subjected to the accelerated extraction and effect-of- alkalies tests. The accelerated extraction test did not affect the tensile strength of the standard-grade PVC, but did affect the tensile strength of all the other materials tested. The accelerated extraction test affected the ultimate elongation of all the materials tested. The changes in weight and hardness in the effect-of-alkalies test were linear for the two times of observation used. The change in thickness was due to experimental error only, and all the materials tested met the change-in-hardness requirement of the effect-of-alkalies test. (Author, modified-PL)

Descriptors :   (*PLASTICS, MOISTUREPROOFING), SHEETS, SOLUBILITY, POLYVINYL CHLORIDE, POLYETHYLENE PLASTICS, BASES(CHEMISTRY), ACCELERATED TESTING, RUBBER, SYNTHETIC RUBBER, AGING(MATERIALS), LIQUID IMMERSION TESTS, TENSILE PROPERTIES

Subject Categories : Plastics
      Elastomers and Rubber
      Construction Equipment, Materials & Supplies

Distribution Statement : APPROVED FOR PUBLIC RELEASE