WHAT ARE THE ENGINEERING AND PHYSICAL PROPERTIES OF STONES ...
· For building works stones with coefficient of hardness less than 14 should not be used. 7. Percentage Wear. It is measured by attrition test. It is an important property to be considered in selecting aggregate for road works and railway ballast. A good stone should not show wear of more than 2%. 8. Porosity and Absorption. All stones have pores and hence .