17 results about "Grout" patented technology

The invention discloses a fore support and an excavating method of an inclined tunnel. The excavating method includes: punching grouting holes in a tunnel face of a pilot tunnel of the inclined tunnel, which is to be excavated, according to a set grouting hole interval for the inclined tunnel to be excavated; forming the fore support of the tunnel face after grout liquid is injected into the grouting holes; excavating the pilot tunnel with set stride length from the tunnel face according to the height and the span of the pilot tunnel, which are designed, wherein the grouting hole interval is predetermined according to the height and the span of the pilot tunnel. The technical scheme includes that cohesion and internal friction angles of surrounding rock of the tunnel face of the inclined tunnel to be excavated, and the designed height and the designed span of the pilot tunnel of the inclined tunnel to be excavated can enable the stability coefficient of the tunnel face of the pilot tunnel to be excavated to exceed a stability threshold value, and accordingly stability of the tunnel face is guaranteed, and safety can be improved during the pilot tunnel excavating process.

A portable mixing apparatus that employs disposable 5-gallon plastic buckets as containers for mixing mortar, grout, plaster and other materials. First and second motor-driven rollers support the buckets at a downwardly sloped angle. A separate mixing basket is placed within the buckets, and includes a plurality of blades that pass through the material as the bucket is rotated by the rollers. The leading roller is positioned lower than the trailing roller so as to engage the flexible wall of the bucket in an area where it is subject to outward pressure from the material during rotation. The rollers are provided with ribbed, non-slip covers having channels that accommodate water and debris on the exteriors of the buckets. The mixing basket is formed of a plurality of coaxial, longitudinally-spaced rings joined at their edges by longitudinal rods. The blades are mounted internal to the rings and extend generally parallel to the axis of the buckets, with the ends of the rods being angled in the direction of rotation. The drive rollers and motor are mounted in a frame having folding legs so that the assembly can be collapsed to a compact form for transportation or storage.

Disclosed herewith a modular integrated building and a construction method thereof. The building includes multiple prefabricated room units, each provided with reserved, exposed reinforcing bars at its top. A bottom of a load-bearing structure of the prefabricated room unit is embedded with grouting couple shafts. Reinforcing bars of the load-bearing structure and of the prefabricated room unit of a next floor are inserted in inner grouting chambers of the grouting couple shafts to connect two prefabricated room units of adjacent floors together. A cast-in-situ concrete interlayer is arranged for connecting adjacent prefabricated room units of a same floor together. The on-site workload is reduced significantly, the construction period is shortened greatly, and the construction is convenient and rapid.

The invention belongs to the technical field of constructional engineering, and relates to a method for grouting and wall protection of a soft stratum pile foundation through a steel casing. The method for grouting and wall protection of the soft stratum pile foundation through the steel casing comprises the steps that grouting pipes are arranged on the outer wall of the machined steel casing at equal intervals in the circumferential direction, and a plurality of layers of upper and lower grout overflowing holes are formed in each grouting pipe; after the steel casing provided with the grouting pipes is installed on a hard plastic stratum, grout is pressed and injected into a top grouting opening, the grouting pressure is adjusted according to the thickness of a soft stratum, grout with acertain thickness is pressed and grouted according to the wall of a grouting hole, and the grout flows out of a bottom grout outlet at first and then flows out of all layers of grout overflowing holesin sequence from bottom to top; after grouting is completed, the steel casing is pulled out, the pulling-out process is slowly carried out, the gap of the steel casing is filled with grout in a supplementing manner till the steel casing is completely pulled out, and a grout protection wall with certain strength is formed after the grout at the position of the original steel casing reaches the strength; and then pile foundation construction is conducted according to a conventional pile foundation. The construction cost is reduced, and the working efficiency is improved.

A fastener for fastening adjacent portions of a structure requiring fastening is described. The present fastener enables delivery of grout or a sealing composition into a passage between or adjacent the portions of the structure or between adjacent parts of the structure. The portions of the structure may include tubbing rings and segments thereof. The fastener includes an inlet and at least one outlet. The inlet and at least one outlet are connected by a channel. Grout or sealing composition can be delivered into the inlet where it flows through the channel, outwardly through the at least one outlet and into the passage requiring sealing. A method of sealing a passage in a formation using the fastener is also described.

The invention discloses a sleeve grouting material for steel bar connection of a prefabricated building. The sleeve grouting material is prepared from the following components in parts by weight: 700to 900 parts of cement, 80 to 150 parts of waste concrete active micro powder, 800 to 1100 parts of quartz sand, 10 to 90 parts of composite fiber and 30 to 110 parts of an additive, the waste waste concrete active micro powder is prepared through adopting a special physical-chemical combined activation technology, so that the mechanical strength of the sleeve grouting material is obviously improved, and the fluidity of the grouting material is improved.

The invention discloses a sleeve valve pipe for reinforcing the pit bottom of a water-rich pebble bed deep foundation pit and a construction process, and the sleeve valve pipe is used for reinforcingthe pit bottom of the water-rich pebble bed deep foundation pit, preventing the pit bottom from bulging and improving the stability of the foundation pit. The sleeve valve pipe is characterized by comprising a sleeve valve pipe body (1), a grouting pipe (2), grouting liquid (7), a manual sand filling layer (6), a drainage plate (5), a grout stopping plug (3), a connector (8), a rubber raft (4) anda conical plug (9). The construction process comprises the following steps: after surveying and setting out, positioning a drilling machine in place, drilling holes, preparing sand, installing the sleeve valve pipe, constructing a manual sand filling layer, conducting grouting in sections and sealing holes. The sleeve valve pipe is fixed through manual sand filling, river sand in the manual sandfilling layer can be flushed into a pebble stratum through high grouting pressure and grouting liquid and is effectively packed into gaps of the pebble stratum after being mixed with the grouting liquid, the gradation of the pebble stratum is changed, a better grouting effect is achieved, the manufacturing cost is low, and economic benefits are high.

The invention relates to the technical field of construction engineering, in particular to a full grout sleeve for building steel bar connecting. The full grout sleeve includes a sleeve body, a groutcavity is formed in the sleeve body, a grout pipe communicating with the grout cavity is integrally formed on the sleeve body, a butt-joint installation seat is arranged inside the grout cavity, and an insertion opening corresponding to the butt-joint installation seat is formed in the sleeve body. The full grout sleeve has the beneficial effects that the full grout sleeve for steel bar connectingcan quickly fix and install steel bars by clamping and fixing, and can further quickly connect and fix the steel bars whose positions cannot be effectively corresponded by universal connection devices, so that the speed of building construction can be effectively increased, the subsequent disassembly is further facilitated, and thus the full grout sleeve is more suitable for existing modular building construction needs.

The invention discloses a reinforcing device and method for a rock slope containing a weak interlayer, and relates to the technical field of slope reinforcing. The reinforcing device comprises a shell mechanism, wherein a drawing reinforcing mechanism is arranged in the shell mechanism in a lifting mode, a rod piece in the drawing reinforcing mechanism drives a reinforcing body to be opened with the rod piece as the center in the rising process, and four guiding mechanisms are fixedly arranged at the top of the inner side of the shell mechanism. According to the reinforcing device and method for the rock slope containing the weak interlayer, a concrete column after anchor cable grouting forming is reinforced, the local strength performance is enhanced to achieve the effect of good internal reinforcing of the rock slope containing the weak interlayer in a mining area, then the situation that shearing damage occurs to the vertical plane of the intersection of the rock slope and the weak interlayer due to uneven stress is avoided, and the shearing force direction of the sliding surface is beneficial to the change of the slope; and meanwhile, the reinforcing device is easy to manufacture, the actual length of the device is conveniently determined according to the depth of the weak interlayer, in addition, after short-term reinforcing, the reinforcing device can be recycled, and the using efficiency is improved.

The invention provides a production method for a flexible tile module. The production method comprises the following steps that firstly, adhesive tape at least comprising an adhesive face is laid on a bench formwork, and one adhesive face of the adhesive tape faces upwards; secondly, limiting frameworks are arranged onto the adhesive face of the adhesive tape, and the limiting frameworks are provided with a plurality of empty boxes matched with the flexible tiles in shape and size; thirdly, the flexible tiles are placed into the empty boxes, wherein the back faces of the flexible tiles face upwards. In this way, when the production method for the flexible tile module is applied to a wall plate, due to the fact that the limiting frameworks are arranged in gaps between the flexible tiles, the limiting frameworks can prevent decorative faces of the flexible tiles from being contaminated by grout leaking in the wall concrete layer pouring process; in addition, in the storing, stacking, transporting, installing and using processes of the wall plate, the adhesive tape plays a role in protecting the decorative faces of the flexible tiles, and the decorative faces of the flexible tiles can be prevented from being scratched and damaged.

The invention discloses an additive for decreasing the shrinkage rate of synchronous grouting materials. The additive for decreasing the shrinkage rate of the synchronous grouting materials comprises industrial potash alum and industrial gypsum. The mixing amount of the additive for decreasing the shrinkage rate of the synchronous grouting materials is 5 kg/m<3>, and by adding the additive for decreasing the shrinkage rate of the synchronous grouting materials into shield synchronous grout, shrinkage of the existing synchronous grout materials in a waterless stratum can be remarkably relieved.

The invention discloses a method for improving the stability of a primary support structure in tunnel step method construction. An arrangement form of upper step small-pipe-diameter constraint anchoring and middle step large-pipe-diameter constraint anchoring rod is adopted for constraint anchoring; an upper step constraint anchoring rod adopts a hot-rolled seamless steel pipe with the diameter of42-50mm and the length of 6-7m and downward drilling is obliquely performed by 5 degrees to 10 degrees through a handheld air drill; and the middle step constraint anchoring rod is a hot-rolled seamless steel pipe with the diameter of 76-108mm and the length of 6-9m, and downward drilling is obliquely performed by 10 degrees and 20 degrees through a crawler-type down-the-hole drill. The respective advantages of handheld air drill drilling and crawler-type down-the-hole drill drilling are brought into full play, the construction progress of the constraint anchor rods is greatly accelerated, prominent problems that when the constraint anchor rods are prone to grout leaking, difficult in grout stopping, and poor in grouting effect are solved, the supporting effect of the constraint anchor rods is ensured, and the stability of the primary support structure in a soft rock tunnel is effectively improved.

A preparation method of a prefabricated concrete member comprises the following steps that 1, steel bars are bound, and 35%-50% of the steel bars are replaced by porous steel pipes; the porous steel pipe is connected with the equal-diameter steel pipe and penetrates through the prefabricated concrete member; 2, concrete is poured into a test mold and vibrated evenly, the test mold is a porous test mold, holes in the porous test mold are the same as the porous steel pipe in aperture, and the porous steel pipe extends out of the test mold through the steel pipe; 3, performing high-temperature steam wet curing, removing the steel pipe, and removing the mold; 4, curing is conducted, specifically, a mixed solution is injected into the porous steel pipe to be soaked, the mixed solution comprises 80-90% of water, 1-5% of nanometer silicon oxide sol, 1-5% of sodium dodecyl benzene sulfonate, 1-5% of urea, 1-5% of sodium silicate and 1-5% of sodium carbonate, and the soaking time is 0.5-1 d; after soaking is finished, high-water-cement-ratio cement paste is injected into the porous steel pipe for water-saturated curing, and the curing time is 0.5-3 d; and 5, grouting materials are poured into the porous steel pipe. The problems that traditional steam-cured concrete is low in later strength and poor in durability are effectively solved.

The invention provides a bidirectional stirring device and a composite foundation construction method, and the bidirectional stirring device comprises a drill bit which is provided with a slurry outlet channel penetrating through the axial direction of the drill bit, and a slurry outlet is formed in one end of the slurry outlet channel; the two variable-diameter stirring assemblies are sequentially connected to the side, away from the slurry outlet, of the drill bit in the axial direction of the drill bit, each variable-diameter stirring assembly comprises a drill rod and a stirring unit arranged on the outer wall of the drill rod, the drill rod is provided with an inner channel penetrating through the axial direction of the drill rod, and the inner channel communicates with the slurry outlet channel; the grouting pipe is arranged in the inner channel, and the outlet end of the grouting pipe communicates with the grout outlet channel; the transmission assembly is arranged in the inner channel and used for driving the two drill rods to rotate in the opposite directions. Through the arrangement, on one hand, the stirring diameter of the stirring unit can be adjusted according to construction requirements, the construction time can be saved, and the construction efficiency is improved. And on the other hand, construction of the variable-diameter pile body can be conducted by adjusting the stirring diameter of the stirring unit, the application range is wider, and universality is higher.