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Table 11 Compressive strength, tensile strength, shear strength, longitudinal wave velocity, rebound number, and Toughness Indexes tests results of results of backing limestone blocks, Cheops pyramid

From: Sustainability problems of the Giza pyramids

No.D (mm)H (mm)A2 (mm2)Failure load (kN)σc (MPa)σt (MPa)Shear strength (N/mm2)Vp (km/s)(RN) rebound numberToughness Indexes (AIV test)
137.278999.315.5014.344.211.986.34369.80
240.2801134.613.1014.763.621.995.303712.90
340.2791025.814.9215.483.991.784.882913.00
439.2821180.515.8013.433.612.014.77279.01
539.3821250.511.8012.652.231.773.88257.30