The disclosure relates to compositions that include sand mixed with a stabilizing agent that includes i) hydrocarbon derivative fibers and cement, ii) acrylic-based polymer emulsions, or iii) hydrocarbon derivative fibers and acrylic-based polymer emulsions, as well as related methods.

The present invention relates to pile foundations and provides an intelligent construction control method and system for jet grouting piles based on stratum information inversion. This method integrates multi-source sensing components and local transmission to perceive real-time drilling information to a data integration terminal. Using engineering soil layer data as training samples, a machine learning algorithm correlates perception information with geological conditions, judging and outputting stratum conditions in real time. An XGBoost model quickly and accurately identifies soil layers at the site. Based on big data matching of a cloud platform, an optimal construction parameter database is established, and the optimal combination of parameters is acquired through algorithm matching. A variable-frequency and variable-speed pressure adjusting device links a piling machine intelligent control system with other subsystems to achieve intelligent control, reducing material consumption and improving pile quality and efficiency.

A foundation for an offshore structure, more particularly an offshore wind turbine structure, comprising: at least one tower-like foundation structure with a circumferential foundation wall extending in the longitudinal direction, the foundation wall being delimited at the lower end by a lower-end end face, the foundation wall being formed from a mineral construction material; and at least one binding element, which is formed from a metal material and is arranged on the lower-end end face, the length of the binding element from the lower-end face to a lower end of the binding element being at least 0.5 m.

Fast-setting flowable fill compositions for filling ground trenches are described. The compositions set quickly but retain a low strength psi at 28 days. The compositions also reduce bleed water on the surface of the fast-setting flowable fill and therefor enable quicker application of surface repair material, e.g., pavement patches, to the trench. The compositions consist of aggregate, Portland cement, accelerant, water and sometimes air. The compositions may have a compressive strength of between 5 psi and 60 psi after 2 hours, a compressive strength of between 10 psi and 100 psi after 4 hours, a compressive strength of between 75 psi and 500 psi after 28 days, a penetration resistance of between 1.5 tsf and 75 tsf after 2 hours, a penetration resistance of between 4.5 tsf and 200 tsf after 4 hours, and a shrinkage of less than 2% as measured by ASTM C490. Also disclosed are methods of filling a trench with fast-setting flowable fill.

The invention relates to a method for designing and forming a retaining wall in the ground having a required target wall stiffness made of a soil-based mortar, which is produced in the ground by mixing soil material and a cement suspension, and vertically aligned support beams, which are positioned in the soil-based mortar and arranged therein, wherein the arrangement of the support beams is laid-out to have an overall beam stiffness. According to the invention, it is provided that the support beams are arranged such that the laid-out overall beam stiffness is less than the required target wall stiffness, and that, when laying-out and arranging the support beams, an additional stiffness component is added that results from at least one adjacent wall section made of soil-based mortar.

The invention relates to a method and an arrangement for producing a foundation element in the ground using a jet grouting device, wherein a jet grouting rod of the jet grouting device is introduced into the ground and a hardenable suspension is injected under pressure into the surrounding ground, wherein the foundation element is produced in the ground, and spaced apart from a place of introduction of the jet grouting rod at least one elongate measuring element is introduced into the ground, with which measurement values are detected when producing the foundation element by the jet grouting device. According to the invention provision is made in that as measuring element a deformable hose is used which is filled with a measuring liquid, and in that as measurement values changes of state of the measuring liquid, in particular a pressure and/or a filling level, are detected in the hose.

The present invention provides a method for installing an off-shore anchoring system comprising drilling a borehole in a seabed, the borehole comprising a first lower portion in communication with a second upper portion. The cross-sectional dimensions of the first lower portion are smaller than the cross-sectional dimensions of the second upper portion. An inwardly protruding abutment surface is provided at a transition point located therebetween. The method further comprises introducing settable locking media into the borehole. The method further comprises subsequently introducing an off-shore anchoring system comprising an anchor pile and a lateral load transition member into the settable locking media within the borehole, such that the anchor pile is located within the first lower portion of the borehole, and the lateral load transition member is located within the second upper portion of the borehole and spaced apart from the anchor pile.

The present invention relates to pile foundations and provides an intelligent construction control method and system for jet grouting piles based on stratum information inversion. This method integrates multi-source sensing components and local transmission to perceive real-time drilling information to a data integration terminal. Using engineering soil layer data as training samples, a machine learning algorithm correlates perception information with geological conditions, judging and outputting stratum conditions in real time. An XGBoost model quickly and accurately identifies soil layers at the site. Based on big data matching of a cloud platform, an optimal construction parameter database is established, and the optimal combination of parameters is acquired through algorithm matching. A variable-frequency and variable-speed pressure adjusting device links a piling machine intelligent control system with other subsystems to achieve intelligent control, reducing material consumption and improving pile quality and efficiency.