The present invention provides a portable device for injecting repair material, the portable device comprising: a chassis frame; tanks storing source materials; pumping means pumping the source materials; an injection nozzle mixing the source materials and injecting repair material into cracks; source material supplying means including: operating blocks connected to the pumping means; supplying pipes connected to the operating blocks and supplied with the source materials; transferring pipes connected to the operating blocks and transferring the source materials into the injection nozzle, and a pressure controller connected to the transferring pipe and controlling the source materials, wherein check valves for preventing backflow are installed inside the transferring pipes, wherein by adjusting another check valve connected to the pressure controller, an amount of the repair material for injection is controlled.

A ballistic panel formed with a ballistic material, the panel comprising: a panel with a filled void; wherein the filled void is filled with a ballistic replacement material; and wherein the filled void exhibits ballistic properties equivalent to the ballistic panel formed with the ballistic material; wherein the ballistic replacement material and the ballistic material comprise between about 1121 kg/cubic meter (about 70 pounds per cubic foot) and about 1442 kg/cubic meter (about 90 pounds per cubic foot); and wherein the ballistic replacement material and the ballistic material comprise: about 1 part by mass Portland cement; about 0.5 to 1.5 part by mass fine aggregate; and about 0.0005 to 0.05 part by mass air entrainment additive; about 0.005 to 0.15 part by mass fiber; about 0.005 to 0.05 part by mass aluminum hydroxide and about 0.005 to 0.05 part by mass calcium phosphate.

An object of the present invention is to provide a method for accurately modifying a concrete slab on subsided ground by injecting an expandable resin below the concrete slab more than once, which also allows for easy control of the work process. The method of the present invention as a means for resolution includes performing the following steps: on a concrete slab in an area including a region where ground subsidence has occurred, determining points to drill injection holes for injecting an expandable resin at a pitch of 0.5 to 2.0 m in a grid pattern or a staggered pattern; injecting an expandable resin below a point where the subsidence of the concrete slab is severest and expanding the expandable resin to push up the concrete slab at most 30 mm more than once.

An object of the present invention is to provide a method for accurately modifying a concrete slab on subsided ground by injecting an expandable resin below the concrete slab more than once, which also allows for easy control of the work process. The method of the present invention as a means for resolution includes performing the following steps: on a concrete slab in an area including a region where ground subsidence has occurred, determining points to drill injection holes for injecting an expandable resin at a pitch of 0.5 to 2.0 m in a grid pattern; injecting an expandable resin below a point where the subsidence of the concrete slab is severest and expanding the expandable resin to push up the concrete slab at most 30 mm more than once.

A UHPC material for reinforcing existing stone masonry wall and its reinforcement method are disclosed, which belongs to the technical field of wall reinforcement. The UHPC material for reinforcing existing stone masonry wall includes: 550-600 kg/m.sup.3ofsilicate cement, 180-200 kg/m.sup.3ofwhite silica fume, 510-530 kg/m.sup.3 of limestone powder, 715-735 kg/m.sup.3 of quartz sand, 60-75 kg/m.sup.3 of iron ore tailings particles, 50-60 kg/m.sup.3 of pumice particles, 15-30 kg/m.sup.3 of polycarboxylic acid water reducing agent, 230-255 kg/m.sup.3 of water and 25-35 kg/m.sup.3 of POM fiber; the disclosure uses the combination of improved new UHPC increased cross-section method and steel banding method to strengthen the existing stone masonry wall, which can increase the thickness of the stone masonry wall and it can improve the stability of the wall; significantly improve the seismic performance and durability, and the construction is convenient, so it can be widely used in the seismic reinforcement of the stone masonry wall.

A method of treating particulate, in substance including selecting a load based on a planned in use loading of the particulate; applying the load to the particulate; injecting material below the load; and removing the load.

Provided are a radical-polymerizable resin composition and a structure repairing material which, when used for repairing concrete structures, enable construction working even in a low-temperature environment, achieve a high strength and a low shrinkage by curing, and prevent cracking. The radical-polymerizable resin composition contains a radical-polymerizable resin (A) containing at least one selected from the group consisting of a vinyl ester resin, an urethane (meth)acrylate resin, and a polyester (meth)acrylate resin, a radical-polymerizable monomer (B) containing an isobornyl group-having unsaturated compound (B1), and a hydroxy group-containing aromatic tertiary amine (C) represented by the general formula (I), and containing the radical-polymerizable resin (A) and the radical-polymerizable monomer (B) in a total amount of 75% by mass or more. The structure repairing material contains the radical-polymerizable resin composition, an organic peroxide, and a filler (Z).

Disclosed is a method, process and system for sealing cracks in concrete substrates such as walls and floors. A plurality of holes are drilled through the concrete substrate, with at least one hole on each opposing side of the crack. Then a polymer rubber gel that is thick enough to not flow at room temperature (e.g. comprising 99% solids) is heated in a tank to an elevated temperature (e.g. 120-200° F.). Next, the heated polymer rubber gel is pumped in the heated state through one of the holes in the concrete. The pumping continues until the polymer rubber gel is observed exiting a second drilled hole that is spaced apart from the injecting hole. The polymer rubber gel rapidly cools and solidifies, thereby forming a waterproofing membrane that seals the crack(s).

A system for fixing an opening within a structure includes a planar front member including an opening, a rear member including first and second outer portions and a central portion connected at a pivot point. The first and second outer portions include first and second hooks, respectively, adjacent to the pivot point. A spring extends between the first and second hooks. The first and second outer portions includes first and second elongated slots and the central portion includes a slot. The system further includes a handle including a body, and the body of the handle is threaded through the first and second elongated slots and the slot of the rear member and the opening of the front member.

A method, system, and computer program product for repairing cracks in structures by automatically transferring filler materials along a magnetic force pathway inside the structures. The method may include identifying a crack in a structure. The method may include analyzing dimensions and positions of the crack. The method may include identifying an array of magnetic coils near the crack, wherein the array of magnetic coils can create a magnetic path to the crack. The method may include determining an appropriate filler material reservoir connected with the structure based on the array of magnetic coils and the crack in the structure. The method may include transmitting instructions to release a quantity of the filler material mixture from the appropriate filler material reservoir connected with the structure for each of the one or more cracks.