The Mastic Asphalt Hardness Tester has been fabricated to meet the essential requirements of IS 1195 1968 in finding out the Hardness Number of mastic asphalt. Hardness Number is defined as the figure denoting the depth in hundreds of a centimeter to which a flat-ended indentation pin in the form of a steel rod 6.35 mm in diameter will penetrate the mastic under a load of 31.7 kg applied for 60 seconds, the temperature being maintained at.
