In this work, the photo-catalytic activity of TiO₂ is considerably enhanced via sensitization with CdIn₂S₄, and its application for protecting Q235 from corrosion in splash zones is examined. TiO₂ nanotube arrays (NTAs) are prepared on a flat Ti substrate via two-step anodization. CdIn2S4 is deposited on the surface of TiO₂ NTAs by hydrothermal reaction. TiO₂ NTAs with enormous specific surface areas and large-diameter hollow nanostructures are found to benefit the immobilization of CdIn₂S₄. As a narrow band gap semiconductor, CdIn₂S₄ is able to extend the light absorption range of TiO₂, and the construction of an n–n type hetero-junction accelerates the separation of carriers. Strong solar light, which accelerates the corrosion of Q235 in the splash zone area, is converted into the necessary condition for protecting Q235 from corrosion. In this work, TiO₂ is sensitized with MoS₂ microspheres (MoS₂/TiO₂ nanocomposites), which were prepared on a flat Ti substrate via a two-step anodization and hydrothermal method, sequentially.

The dynamic consolidation method has been used widely in various engineering domain. With this method, the velocity of reconsolidation settlement was enhanced, the consolidation result was good, and the cost was lower than other methods. However, in the flooded area of Yellow River, the groundwater level is higher, and the shallow saturated silty soil liquefaction will be happened with this single method of dynamic consolidation. It goes against the roadbed stability. According to engineering practice, the vacuum dewatering with lower energy dynamic consolidation method was proposed in this paper. In order to monitor the effect of this consolidation method, the water-level observation hole, pore water pressure gauge, standard guide pile, level gauge have been set up. They could be used to get the groundwater level, the excess pore water pressure, horizontal displacement and land subsidence, respectively. These monitors would last the whole period of the consolidation experiment. Field test results shows that the excess pore water pressure was reduced by 80%-90% during one to three days.