Improvement of these mechanical properties was attributed to the physical properties of FNS such as high unit weight, well-grading and angularity of the particle, which improved bonding between paste and aggregates (Sakoi et al. 2013; Shoya et al. 1999).
This may be due to filler effect of fine particles of fly ash which densify the matrix and improved the interfacial bond between paste and aggregate.
The IDTs of the SAW devices were connected to the ports of the PCB by silver paste bonding on the SAW device and wire bonding on the PCB as shown in Fig. 3.
In this scope, the bond between steel fibres and the binding paste is of paramount importance.
The improvement of mechanical properties is attributed to the higher angularity and roughness of aggregate particles that can improve bonding between cement paste and aggregate (Maslehuddin et al. 2003).
In this scope, the bond between steel rebars and/or fibers and the binding paste plays a most relevant role.
This water flow breaks the aggregate-cement paste bonds and increases the W/C ratio in the interfacial transition zone, this degrades the fresh and hardened concrete properties.
Prominent peaks found at 1,650 cm−1 indicates the formation of S O bonds in the paste.
The hydration products and formation of bonds in the paste were studied using several techniques like SEM, FTIR and XRD tests.
The hydration products and formation of bonds in the paste during setting were studied with the help of SEM, FTIR and XRD tests and the same are correlated to the hydration process.
The morphological features of Cu nanoparticles, sintered Cu nanoparticle paste, Cu Cu bonding interface, and the fracture surface of bonded joints were observed by a scanning electron microscope (FEI Nova Nano SEM 450).
