ASTM D5860-95(2022)

Podrobné informace

Označení: ASTM D5860-95(2022)

Datum vydání: 01.01.2022

Stran: 3

Země: Americká technická norma

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Anotace

This test method details the standard procedure for evaluating the effect of water repellent treatments on the freeze-thaw resistance of hydraulic cement mortar specimens. This test method is designed to compare the effectiveness of water repellent treatments under conditions of freezing and thawing only, intended as a laboratory screening method for treatment selection and may not accurately reflect the performance of treated and untreated specimens in the field. This procedure requires the use of a balance, corrosion-resistant aluminum metal pan, weight per litre (gallon) cup, freezing chamber, forced draft oven, and stiff-nylon-bristled brush. Mortar specimens are treated with or immersed in a water repellent material, removed, and allowed to cure. After air drying, the treated specimens are weighed then subjected to various cycles of freezing and thawing. Periodic weighing and observations are made to determine weight loss and deleterious effects such as spalling and cracking.


Keywords:
freeze-thaw resistance, hydraulic cement mortar specimens, water repellent treatments,, ICS Number Code 91.100.10 (Cement. Gypsum. Lime. Mortar)