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...

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...

The 8006 working face at the Wuyang Coal Mine adopts grout injection into bed separation technology for surface subsidence control. Surface leakage occurred during process of this face. Grout has adverse effects on grouting filling effect, cost and environment. To determine channels slurry transport process, to provide a theoretical basis prevention control, paper first used 3D seismic explorat...

Interferometric Synthetic Aperture Radar (InSAR) has become the primary remote sensing detection method for monitoring significant surface subsidence and deformation caused by underground coal mining. Time Series InSAR been intensively researched in mining-caused its ability to provide time series, with Small Baseline Subset (SBAS-InSAR) Permanent Scatter (PS-InSAR) being two classical methods....

The use of prefabricated bridge columns in seismic regions is challenging since performance data on precast column connections limited. A handful accelerated construction (ABC) details to connect adjoining members have been experimentally investigated, and some were found viable for applications field deployment. connection consisting ducts filled with conventional grout the focus present study...