whether the design has an influence on the penetration length of sodium hypochlorite mixed with a radiopaque contrast medium, measured in millimeters, when delivered using positive pressure (PP) and using sonic (SI) or passive ultrasonic (PUI) activation. Sixty single-rooted teeth were divided into two groups: open and closed systems (n=30). Root canal shaping was performed to a working length ...

C ommercially available fiberbased reinforcement for concrete is made of carbon, aramid, or glass filament fibers impregnated in a resin. Some aramid fiber reinforcement consists of aramid filaments without a resin matrix. For general applications, the most important feature of fiber-based reinforcement is its resistance to corrosion, which makes it ideal for reinforcing concrete exposed to hig...

The use of externally bonded Steel-Reinforced Polymer (SRP) and Steel Reinforced Grout (SRG) composites is a promising new technology for increasing the flexural and shear capacities of reinforced concrete (RC) members. The reinforcement system in these composites is a sheet made up of unidirectional cords consisting of tightly wound ultra high strength steel wires. The reinforcement can be mol...

In order to solve the problems of grouting diffusion and invisible formation process in shield slurry film forming test, transparent soil were introduced carry out mud test based on model. Using laser imaging combined with CCD camera (high-speed industrial camera) rapid capture photography technology, through a series visible physical model tests development under different working conditions, ...

Abstract The Semmering Base Tunnel (SBT), with a total length of 27.3 km, is one the leading construction projects Baltic-Adriatic Railway Network. tunnel connects two federal provinces Lower Austria and Styria cuts through eastern part Alps. lot SBT 1.1-Tunnel Gloggnitz characterized by complex geological- hydro-geological architecture containing alternating competent geological structures, ma...

To evaluate the seismic performance of pre-cast concrete shear wall with vertical reinforcements spliced by two different grout ways, quasi-static tests of two concrete shear walls holed by prefabricated corrugated pipe and one concrete shear wall holed by drawing out the pipe were tested. The test results showed that the wall holed by prefabricated corrugated pipe was basically the same as the...

Swine uterine capacity affects litter size, and it could be used as a selection parameter of reproductive performance. Although there are some controversial results, evidences show that the catheter penetration length is positively correlated with litter size, and it could be used as a tool for predicting selection methods. The aim of this study was to determine whether there is any association...

Abstract In recent years, bio-inspired burrowing robots and other intruder problems in granular media have attracted significant attention. Many of these, especially related to traditional penetration geotechnical engineering, cover vertical penetration. Modelling these types numerically using the discrete element method (DEM) is typically done ignoring gravity by controlling stresses selected ...