In attrition test used to find the rate of wear of stones, wear should be equal to or less than ___________ for good building stone.(a) 2%(b) 3%(c) 5%(d) 6%I had been asked this question during an interview for a job.I want to ask this question from Stones topic in portion Air Conditioning, Thermal Insulation, Stones & Ferrous Metals of Construction & Building Materials

In attrition test used to find the rate of wear of stones, wear should

1.	In attrition test used to find the rate of wear of stones, wear should be equal to or less than ___________ for good building stone.(a) 2%(b) 3%(c) 5%(d) 6%I had been asked this question during an interview for a job.I want to ask this question from Stones topic in portion Air Conditioning, Thermal Insulation, Stones & Ferrous Metals of Construction & Building Materials
Answer» Right ANSWER is (a) 2% To explain I would say: In attrition test used to find the RATE of WEAR of stones, wear should be equal to or less than 2 % for GOOD BUILDING stone. If the wear is more than 3%, then the stone is not satisfactory.

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