How is the result of a toughness test expressed?

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Multiple Choice

How is the result of a toughness test expressed?

In toughness testing for aggregates, the result is expressed as a percentage change to the original weight. The sample is weighed before and after the abrasion process, and the weight loss is reported as a percent of the original weight. This normalizes the result for different sample sizes and directly reflects how much material was worn away, with a lower percentage indicating better abrasion resistance. Weight loss in grams would depend on the initial sample mass and isn’t a standardized expression. Time to failure isn’t used to report toughness in this context, and a ratio of fines to coarse aggregate relates to gradation rather than resistance to abrasion.

In toughness testing for aggregates, the result is expressed as a percentage change to the original weight. The sample is weighed before and after the abrasion process, and the weight loss is reported as a percent of the original weight. This normalizes the result for different sample sizes and directly reflects how much material was worn away, with a lower percentage indicating better abrasion resistance.

Weight loss in grams would depend on the initial sample mass and isn’t a standardized expression. Time to failure isn’t used to report toughness in this context, and a ratio of fines to coarse aggregate relates to gradation rather than resistance to abrasion.

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