The linear relationship between compressive strength and ultrasonic velocity in castable refractories

Abstract

In this experimental work, castable refractory has been used. In pressing the water percent was in the range of 7.5-9.5 % weight, and the seven cylindrical specimens for each mixture have been pressed under 4000 N/cm(2) into a steel mould. In casting the water percent was in the range of 10-12 % weight. After mixing castable with water, the specimens, which contain more than 9.5 % water, have been casted to 40 x 40 x 40 mm(3) into a steel mold by vibrating.