The following summarizes the contents of ASTM C and key components of the test methods used to determine relative freeze thaw durability. This does not. ASTM C Standard Test Method for Evaluating the Freeze-Thaw The following summarizes the contents of ASTM C and key components of the test. Buy ASTM C Standard Test Method for Evaluating the Freeze-Thaw Durability of Manufactured Concrete Masonry Units and Related Concrete Units.
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The following summarizes the contents of ASTM C and key components of the test methods used to determine relative freeze thaw durability.
This does not provide a comparison to field performance but a systematic approach to testing. A copy of the full standard is available upon request. This summary attempts to provide the information which is most commonly used, but Allan Block does not claim that all information contained in the standard is represented. Related concrete units include units such as hollow and solid concrete masonry units, concrete brick, and concrete aastm pavers.
The units shall be free from visible cracks or structural defects. Do awtm saw-cut test specimens from units awtm have been previously oven dried. Do not subject test specimens to oven-drying prior to completion of freeze-thaw testing. Cut the coupon from the exposed surface of the unit as the unit is used in service unless the exposed surface is an architectural or other nonplanar surface see Note 6.
In the case of a unit with an exposed architectural or other nonplanar surface, cut the coupon from another flat molded surface ideally as far as possible from the architectural or other nonplanar face and in no case less than 2 in. Immediately following saw-cutting, asttm loose particles and residue from the coupon by rinsing in tap water and brushing with a soft bristle brush.
Do not fully immerse coupons in water. Each specimen shall bemarked with a unique identification number on the non-molded surface of the specimen. Note 6 – Split-faced surfaces c126 the most common surfaces used to provide an architectural appearance to segmental retaining walls. However, other means could be used to obtain similar architectural effects like tumbling, grinding, and slumping. Do not pour test solution directly onto the specimen.
Close the container lid awtm and store the container on a level surface in laboratory air as defined in 6. Open containers to visually inspect the condition of the specimens and to adjust the test solution level to comply with 7.
Remove a single specimen from its container. Immediately rinse the specimen with water if the specimen is tested in saline solution, use saline solutiontorinse the specimen usinga squeeze bottle,being c12262 to collect in the specimen container the rinse water or saline solution and all loose particles from the specimen.
Consider any pieces that separated from the specimen as part of the residue.
Pour the test solution from the specimen container through the filter paper to collect the residue spall from the test specimen. Replace the specimen in the container.
ASTM C Standard Specification for Segmental Retaining Wall Units
Using fingertips and a squeeze bottle, remove loose particles from all surfaces of the specimen, again being careful to collect all rinse water or saline solution and loose particles in the specimen container.
Remove the specimen from the container, pourthe rinse water or saline solution through the filter paper, and rinse the specimen container until all residue spall in the specimen container is collected on the filter paper.
Rinse the residue from specimens tested in saline solution three times with water to remove any soluble salt. V1262 the coupon thickness is less than 1. Report these values for each specimen as well c11262 the average of the specimens tested.