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...

Semi-Flexible Pavement (SFP) is a composite type of pavement produced by manufacturing porous asphalt mixes using open graded aggregate gradation to create 20-35% voids filled with grout (cement paste, cement mortar, etc.….). The resulting has the flexibility and some strength concrete pavement. current study focused on investigation widely available (in Iraq) waste material namely Rice Husk As...

To make the bearing capacity tests safer and more affordable for prestressed high-strength concrete (PHC) piles, this paper proposes a reaction device anchor piles filled with core grout based on geometric mechanical characteristics of PHC piles. The proposed has advantages convenient construction, strong controllability connection quality low cost. In addition, pile will not experience prestre...

This research developed polymer grouts made from wastes such as fly ash, palm oil fuel and silica fume. The selected served an interlocking key between the StormPav covers a grout to seal gaps keys covers. Based on compressive strength workability of grouts, mix ratio resin ash = 1:1.00 was chosen grout, while 1:1.50 used form key. Mix ratios had 98.90 MPa 81.70 MPa, respectively, flexural 53.0...

The ground heat exchanger plays a major role in the thermal performance and economic optimization of ground-coupled pump. present study focuses on effect borehole size grout soil properties assessment these exchangers. A double U-tube was studied numerically by COMSOL Multiphysics 5.4 software 3-dimensional discretization model. circuited as parallel flow arrangement situated configuration (PFP...

Grouting is a common method of reinforcing fractured rock mass. The mechanical property grouted major aspect the reinforcement effect, which depends on geometry crack, angle (β) between load direction and other factors. Few studies have focused with bi-directional crack can reflect well grouting in stratum developed fractures. To explore effect mass, uniaxial compression tests were carried out ...

considering the seepage and choosing an efficient sealing method is very important in dam projects. this issue has a close relationship with engineering geological properties of the dam site. chapar-abad dam is an inhomogeneous earth-fill dam of 44.5 meters height, crest length about 427 meters and a reservoir capacity of 127 million cubic meters. the dam project is under construction and is lo...