From: Use of Higher-Harmonic and Intermodulation Generation of Ultrasonic Waves to Detecting Cracks due to Steel Corrosion in Reinforced Cement Mortar
Material
Amount (g)
Cement (CEM I 52,5 R SR(3))
450
Standard siliceous sand
1350
Deionized water
225 (w/c = 0.5)
NaCl
14.8 (2% Cl− relative to cement weight)