The post-grouting technology can effectively improve the bearing capacity and reliability of foundation piles, it is great academic economic significance to evaluate effect post-grouting. However, in general, evaluation slurry on piles still relatively single, most researchers only test improvement characteristics but there are few research results distribution state consolidation range reinfor...

Many applications of imaging techniques like diffraction tomography demonstrate their ability to image the interior of huge structures like bridges. One problem of testing concrete bridges are grouting defects in tendon ducts which may lead to corrosion of tendons yielding a degradation of the stability of the whole structure. Ultrasound is able to penetrate the tendon ducts and therefore it ma...

Aiming at the existing grouting material, there are a series of problems such as poor fluidity grouting, rapid loss fluidity, non-compactness after hardening, gaps or holes, and like. In this paper, fly ash, limestone powder, silica fume used to replace cement, influence mineral admixtures on rheological properties, strength material systematically studied. The experiment found that: can all im...

Microbially-induced calcium carbonate precipitation (MICP) is a promising grouting material for subsurface remediation due to its water-like viscosity and excellent penetration. Current studies of MICP-grouting both rock fractures highly-permeable matrix focus on the spatio-temporal distribution precipitated bio-CaCO3 resulting reduction in permeability. Conversely, we improvement mechanical re...

The application of grouting technology in housing construction is to inject liquid grout into the cavities and cracks construction. After it solidifies, stability can be improved. Grouting not only very convenient but also environmental-friendly, relatively low-cost. Therefore, widely used In this paper, types its advantages are analyzed, specific strategies put forward, hopes improving quality

The dynamic action of groundwater in the water-rich sand stratum carries away injected cement slurry before it becomes solidified, which seriously affects determination diameter and strength column. Grouting additives information-based construction are two main actions to control quality jet grouting construction. This study introduced a solution stratum. First, high-polymer grout (HPCG), red m...

To improve the construction efficiency of the Longtan Hydropower Project, this paper studies the multi-mode resourceconstrained project scheduling problem in its Drilling Grouting Construction Project. A multiple objective decision making model with bi-random coefficients is first proposed for this practical problem to cope with hybrid uncertain environment where twofold randomness exists. Subs...