The wet wheel abrasion test is designed to evaluate the wear resistance of molded slurry mixture specimens. By placing the specimen in water and grinding it with a specialized head for 5 minutes, the wear loss is measured and expressed in g/m². This instrument simulates road surface wear under vehicle loads, evaluating the performance of emulsified asphalt slurry seal mixtures by calculating mass difference before and after the test.
Prepare aggregates and fillers as required. Weigh 800g of the mixture and mix thoroughly in a pot. Add water and a quantitative amount of emulsified asphalt. Spread the oil felt disc flat on an enamel plate and place the circular template on top. Pour the mixture into the hole, scrape it flat, and remove the template. Place the sample in a 60℃ oven until it reaches a constant weight.
Cool the specimen to room temperature and weigh it. Submerge the specimen and oil felt in a 25℃ water bath for insulation. After insulation, place the specimen in the sample tray and add water until completely immersed. Start the instrument for 5 minutes of grinding. After completion, rinse off debris, and dry the specimen in a 60℃ oven to constant weight. Cool and perform the final weighing.