The paper presents outcomes of extensive experimental study focused on determination of relations between the size of the specimen and results of mechanical tests of high-strength fibre-reinforced concrete (HSFRC) with coarse aggregate (maximum aggregate size 16 mm).
In parallel to these mechanical tests, also the thermal answer of the specimens to mechanical loads is evaluated by means of thermography.
Using scanning electron microscope (SEM) images, a comparison is performed with the unexposed specimens in terms of mechanical strength, physical impact (i.e., linear and volumetric shrinkage), and micro-structural transformation of concrete specimens.
This has implications for mechanical testing protocols, as a time delay between fatiguing specimens and characterization of mechanical properties will affect the results.
This study presents several designs for flash moulds intended to aid the damage-free production of polymeric specimens for mechanical and structural characterisation.
Tables 1 and 2 list the required structural properties of the beam specimens for mechanical analysis and the mechanical properties of reinforcing steel bars, respectively.
Figure 3 Thermal conductivity of 50 nm thick freestanding silicon nitride specimens as a function of mechanical strain.
During the dynamic test, constant displacement of each specimen was recorded and series of mechanical parameters were exported by Bose ElectroForce including storage modulus, loss modulus, and tan δ.
Up to four control urine specimens per AKI urine specimen, drawn during the same day of mechanical ventilation as the AKI patient, were randomly selected for comparison using a random number generator.
Lead molibdate crystals are found to be characterized by a large piezo-optic efficiency, the maximum change of the optical path (per unit of mechanical stress and specimen length) being calculated to 24.9 Br, which is a much larger value than previously reported for other well-known piezo-optic materials such as LiNbO3, CaWO4 and GaP.
