Development of a Nondestructive Impulse Device and Damage Model for Unreinforced Concrete

Table 1

Mix designs for 0.5 cubic feet and 28-day compressive strengths.

Mix	Cement (lbs.)	Fly Ash (lbs.)	Course aggregate (lbs.)	Fine aggregate (lbs.)	Water (lbs.)	𝑤/𝑐 ratio	𝑓^𝑐 (psi)
Low strength	9.5	0.0	0.0	70.0	4.9	0.51	1880
Low/medium strength	12.6	0.0	38.6	34.0	5.4	0.43	3800
Medium strength	10.3	1.9	25.1	29.7	5.0	0.48	5350
Medium/high strength	13.2	3.3	29.4	19.0	5.2	0.39	8920
High strength	Proprietary						12560