The development of environmentally accepted methods of used tire disposal is one of the greatest challenges that waste management experts face today. Use of waste rubber particles as aggregate in self-compacting concrete is a suitable solution for the environmental hazards of waste tires being produced on a large scale. The aim of this work is to investigate the influence of the size of waste r...

The refractive indices, densities and ultrasonic velocities of binary liquid mixtures of tetrahydrofuran (THF) with methanol and o-cresol over the entire composition range have been measured at 293, 303 and 313 K. Refractive index, density and ultrasonic velocity data have been used to evaluate the molar refraction deviation ∆Rm, deviation in ultrasonic velocity ∆u, excess internal pressure π i...

Cemented tailings backfill (CTB), prepared by a mixture of tailings, binder, and water in certain proportion, is widely applied to mines worldwide for ground support disposal. The prediction the mechanical properties CTB during whole consolidation process great practical importance. objective this paper focuses on investigation performance based ultrasonic pulse velocity (UPV) method. samples w...

Metal structures can fail because of fatigue crack propagation or because of section loss from corrosion. Regular inspection is required to intercept such failures, and in situ sensors would be a superior technology for that purpose. We have designed and fabricated arrays of MEMS capacitive diaphragm transducers and we report on their performance as pulse-echo detectors in direct contact with s...

The purpose of this study is to evaluate the mechanical strengths and ultrasonic pulse velocity (UPV) supersulfated cement mortar incorporating sodium sulfate (Na 2 SO 4 ) with various amounts 3 at 0 wt.%, 2.5 7.5 10 wt.%. results exhibited that inclusion Na could significantly improve 28-day compressive strength by about 2.94 4.26 times higher flexural 2.89 3.78 higher, when compared mixture w...