42 results about "Polymer concrete" patented technology

The invention discloses a lithium slag based salt corrosion resistant concrete pole and a preparation method thereof. The pole is made of lithium slag based geopolymer concrete. The concrete comprises the following components in parts by mass: 20-30 parts of dealkalized red mud, 15-25 parts of activated lithium slag, 10-15 parts of slag, 5-8 parts of silica fume, 6-10 parts of magnesium phosphate cement, 12-18 parts of a composite alkali activator, 25-35 parts of machine-made sand, 40-50 parts of gravel, 0.4-0.6 part of a polycarboxylic acid water reducer, 0.8-1.2 parts of composite fibers, 2-3 parts of a salt corrosion-resistant corrosion inhibitor and 25-35 parts of water. The outer surface of the electric pole is coated with an organic silicon-fluorosilicone resin hydrophobic coating; the salt-corrosion-resistant corrosion inhibitor is prepared by compounding nano silicon dioxide, a hydrotalcite precursor and a triphosphonic acid-based corrosion inhibitor, the concrete pole is obtained through the processes of red mud and lithium slag pretreatment, raw material mixing, centrifugal forming, curing and surface treatment, and has excellent salt corrosion resistance and mechanical property.

This invention relates to Joule-cured multi-component solid waste polymer concrete and its preparation method. It utilizes Joule heat generated by electricity to cure the polymer, significantly improving curing efficiency and the mechanical properties of the polymer concrete. If the water-cement ratio in the concrete raw materials is not higher than 0.3, nano-carbon fibers need to be added to the raw materials; if the water-cement ratio is higher than 0.3, nano-carbon fibers are not initially added. Carbon fibers, or a mixture of carbon fibers and nano-carbon fibers, are uniformly dispersed in water before being added to a uniformly mixed precursor powder. Finally, steel fibers are added and mixed uniformly to form a slurry with a multi-level conductive network. The raw materials include: precursor powder, alkali activator, steel fibers, carbon fibers, and water. The steel fibers account for 0.5~2.5 vol% of the precursor powder, the carbon fibers for 0.4~1.0 vol%, the nano-carbon fibers for 0~0.10 vol%, and the water for 0.2~0.43 wt% of the precursor powder.

Polymer concrete as a material consisting of fillers, a binder, and a hardener, wherein the weight fraction of the fillers is between 75% and 95%, the weight fraction of the vegetable oil or natural resin is between 3% and 18%, and the weight fraction of the hardener is between 2% and 15%, wherein the fillers comprise quartz flour with a weight fraction of 10% to 20%, sand with a grain size of 0 mm to 2 mm and a weight fraction of 20% to 30%, gravel with a grain size of 2 mm to 8 mm and a weight fraction of 30% to 40%, and gravel with a grain size of 8 mm to 16 mm and a weight fraction of 20% to 40%, characterized in that the binder consists of chemically modified vegetable oil or chemically modified natural resin, wherein the binder is triglycerides from vegetable oil or terpenes from natural resin, preferably from rosin. are modified to acrylates or polyols or epoxy resins or polyesters, wherein modified polyols are hardened by the addition of isocyanates or polyisocyanates, and / or wherein polyesters are hardened by the addition of polyols and / or wherein native acrylates or native unsaturated polyesters are polymerized by radicals.

The invention belongs to the technical field of reinforcement construction, and discloses a ground polymer concrete grouting reinforcement device and method. The ground polymer concrete grouting reinforcement device comprises a base plate, a mounting platform is arranged at the top of the base plate, a stirring mechanism is arranged on the mounting platform and used for storing and stirring slurry, a grouting pump is mounted on the mounting platform, the feeding end of the grouting pump communicates with the stirring mechanism, and a grouting mechanism is mounted on the mounting platform. The grouting mechanism is arranged on the mounting platform and used for grouting, and the grouting pump supplies slurry to the grouting mechanism. According to the ground polymer concrete grouting reinforcement device and method, through the design of the stirring mechanism, slurry can be stirred to maintain the uniformity of the slurry, layering of the slurry in the grouting reinforcement process is avoided, the slurry can be pushed in the cavity in cooperation with the design of the grouting mechanism, the grouting compactness is ensured, and the grouting reinforcement efficiency is improved. The situation that small holes appear in the grouting layer face to affect the final reinforcing effect is avoided, and the problems proposed in the background technology are solved.

This invention relates to the field of concrete technology, specifically to a self-compacting polymer concrete, its preparation method, and its application. The self-compacting polymer concrete, by weight, comprises the following components: 260-300 parts geopolymer, 80-120 parts composite mineral admixture, 900-1000 parts crushed stone, 700-900 parts washed sand, and 140-160 parts modified coal chemical wastewater. By using geopolymer to replace specific amounts of traditional silicate cement and industrial solid waste, the problems of poor fluidity, high shrinkage, low strength, and easy cracking in concrete prepared with traditional silicate cement are solved.

The application provides a kind of based on waste mud geopolymer concrete and its preparation method, belong to geopolymer concrete technical field.The raw material of the based on waste mud geopolymer concrete of the application includes cementitious material, alkali activator, mud filter cake, aggregate, water, wherein the cementitious material is fly ash and slag powder, the dosage of fly ash in cementitious material is 30-60%, the dosage of slag powder in based on waste mud geopolymer concrete is 99-200kg / cm 3 , the mass ratio of cementitious material, alkali activator, mud filter cake and aggregate is 1:0.38-0.60:1.0-1.1:4.5-4.7, the initial water-binder ratio of based on waste mud geopolymer concrete is 0.40-0.44.The application realizes the reuse of waste mud, and the compressive strength, tensile strength and flexural strength of the prepared based on waste mud geopolymer concrete are all high, which meets the use requirements of concrete.

The application discloses a kind of hybrid fiber reinforced geopolymer concrete dynamic growth factor prediction method and system, it is related to composite material technical field, including: based on the ratio of dynamic peak stress and quasi-static peak stress under given strain rate, obtain initial peak stress growth factor;Based on the ratio of dynamic elastic modulus and static elastic modulus, obtain the dynamic increase coefficient of concrete elastic modulus;In the case where static compression test piece size and dynamic compression test piece size are consistent, analyze the influence of fiber combination mode, fiber type and content and strain rate on the dynamic performance of test piece;Introduce the secondary fitting of fiber characteristic parameter to initial peak stress growth factor, obtain the modified peak stress growth factor;The dynamic increase coefficient of concrete elastic modulus is fitted by linear function, and the modified elastic modulus growth factor and critical strain rate are obtained.The application can accurately predict the dynamic growth factor of hybrid fiber reinforced geopolymer concrete, and then obtain the impact resistance of material.

A method of producing a polymer concrete comprising the steps of dispersing 2D material in a carrier to form a 2D material-carrier dispersion, mixing the 2D material-carrier dispersion with one of a r

An ingredient conveying device comprises a machine frame, a first stock bin for storing a first ingredient and a second stock bin for storing a second ingredient are installed on the machine frame, and a storage metering system counts the weight of the ingredients stored in the first stock bin and the second stock bin and counts the weight of the ingredients needed in the batching process. A first ingredient output by the first stock bin and a second ingredient output by the second stock bin enter the mixing stock bin through the discharging system to be mixed, a mixture in the mixing stock bin is output outwards after passing through the mixing system, and the control system is used for controlling the storage metering system, the discharging system and the mixing system. The batching and conveying device has the advantages that the batching and conveying device is suitable for accurate proportioning, mixing and conveying of polymer concrete materials, and the storage metering system, the discharging system and the mixing system work cooperatively under the control of the control system, so that accurate, efficient and stable operation of the batching and conveying device is ensured.

To meet the design requirements and specified strength standards within a short period of time. [Solution] The method for producing geopolymer concrete is a method for producing geopolymer concrete using multiple materials including an activated filler, aggregate, and an alkaline solution as raw materials, and includes a mixing and stirring step in which the raw materials are mixed and stirred such that the W / P, which represents the volume ratio of water content to activated filler, is 1.1 or more, and the A / W, which represents the molar ratio of alkaline components to water content, is 0.075 or more.

The invention provides a tunnel inverted arch, inverted arch filling early strength slurry bone polymeric concrete and a construction method, and relates to the technical field of tunnel inverted arches, inverted arch filling concrete materials and construction methods. The early-strength slurry bone polymer concrete is formed by injecting an early-strength grouting material into aggregate, the design strength can be achieved within 12 h, and continuous excavation construction of the tunnel is achieved; the aggregate of the inverted arch is 9.5-20 mm, the aggregate of the filling layer is 4.75-31.5 mm coarse aggregate, the aggregate is densely piled in advance, the proportion of the aggregate is large, the shrinkage of the slurry is restrained, and the cooperative development of strength and elastic modulus is facilitated; the early-strength grouting material contains preferable industrial sand and a reasonable dosage of retarder, high strength and high fluidity are achieved, the retarding time meeting the pouring duration is met, the slurry proportion is small, shrinkage is small, the cracking risk is small, and durability is better; during construction, the aggregate is taken and filled nearby, the slurry is prepared and poured nearby, film covering and curing are conducted in time, pure slurry flows fast, consumed time is short, vibration is not needed, the delayed coagulation duration allowance is enough, the initial coagulation risk is small, the management difficulty is small, the forming quality is good, cost is low, and the popularization value is high.

The invention provides cold and heat cycle resistant polymer concrete suitable for construction of a Mars base and a preparation method, and belongs to the technical field of high polymer materials. The cold and heat cycle resistant polymer concrete is prepared from high-density polyethylene, simulated Mars soil aggregate, a hindered phenol antioxidant, nano silicon dioxide, basalt fiber and a fluorine-containing polymer additive. Wherein the high-density polyethylene is used as an adhesive to endow the concrete with good flexibility and temperature resistance, thermal expansion and cold contraction stress can be buffered through chain segment movement in a temperature interval of-150 DEG C to 20 DEG C, the hindered phenol antioxidant inhibits oxidative degradation of the high-density polyethylene at high temperature, and the nano silicon dioxide fills pores to improve compactness and reduce heat conduction; the basalt fiber enhances the crack resistance, the fluorine-containing polymer additive forms a low-surface-energy coating to reduce dust adhesion, the scene with the strict temperature resistance requirement can be met, the preparation process is simple, the raw materials can be obtained in situ, and the space building cost is remarkably reduced.

Provided is a method of producing a polymer concrete comprising 2D material, and a method of producing carbon fibre reinforced polymer.

The invention provides red-mud-based ultrahigh-strength geopolymer concrete and a preparation method thereof, and belongs to the field of civil engineering materials. According to the concrete, granulated blast furnace slag, fly ash, silica fume and red mud are used as composite cementing materials, a sodium silicate solution is used as an alkali activator, and steel fibers are doped for reinforcement. By optimizing the ratio of the silica fume to the red mud, the alkali doping amount and the thermal curing process, the problems of insufficient formation of a geopolymer gel network, limited strength development and the like caused by independent or excessive use of the red mud are solved. According to the prepared concrete, under the condition that no efficient water reducing agent is needed, the compressive strength of 28 days can reach 147 MPa to the maximum, the breaking strength reaches 14 MPa, large-amount and high-added-value resource utilization of the red mud is achieved, and the concrete has the characteristics of high strength and environmental protection.

The application discloses a lithium residue-based anti-salt corrosion concrete pole and a preparation method thereof. The pole is made of lithium residue-based polymer concrete, and components of the pole include 20-30 parts of dealkalized red mud, 15-25 parts of activated lithium residue, 10-15 parts of slag, 5-8 parts of silica ash, 6-10 parts of magnesium phosphate cement, 12-18 parts of composite alkali activator, 25-35 parts of machine-made sand, 40-50 parts of gravel, 0.4-0.6 parts of polycarboxylic acid water reducer, 0.8-1.2 parts of composite fiber, 2-3 parts of anti-salt corrosion rust inhibitor and 25-35 parts of water. The pole is coated with a silicone-fluorosilicon resin hydrophobic coating on the outer surface. The anti-salt corrosion rust inhibitor is compounded by nano-silicon dioxide, hydrotalcite precursor and triphosphonic acid-based rust inhibitor. The concrete pole is obtained through the processes of pretreatment of red mud and lithium residue, raw material mixing, centrifugal molding, curing and surface treatment, and has excellent anti-salt corrosion performance and mechanical properties.

This invention provides a grout-aggregate polymeric concrete for tunnel secondary lining and its construction method, relating to the technical field of tunnel concrete materials and construction methods. In the grout-aggregate polymeric concrete of this invention, the aggregate is a single or two types of coarse aggregate densely packed to form a larger skeleton proportion, which can exert a stronger inhibitory effect on the hardening shrinkage of the grout, ensuring structural strength while significantly reducing the shrinkage rate. By screening spherical industrial sand with activity and water-retaining curing functions as fine aggregate for use in the grout, the fluidity, strength, and shrinkage resistance are improved. Further incorporation of trace amounts of nano-silica does not affect fluidity and can synergistically improve compressive strength, flexural strength, and impermeability. Moreover, pre-filling the aggregate and then injecting the grout to fill and encapsulate the aggregate can reduce the energy consumption of traditional concrete aggregate reciprocating transportation and overall raw material mixing. The tunnel secondary lining pouring method of this invention is simple, efficient, low-cost, low-pollution, and produces good molding quality.

The present disclosure relates to the manufacture of expanded metal and to an expanding apparatus for expanding very thin metal foil sheets (12.5pm to 100pm thickness). The subject thin foils will be expanded with sub-millimeter size tooth blades for very small pore sizes, and advanced in small increments for uniform hole or pore distribution. The expanding blade may comprise between 400 and 1440 teeth per inch which may provide a range of pore sizes from roughly 5-6pm up to about 48-50pm. The expanding apparatus generally comprises a polymer concrete machine base, a granite expander frame atop the base, stationary lower blade mount and fixed blade mount, an upper blade actuator assembly including piezo actuator driven reciprocating blade assembly which moves up and down and side to side cooperating with the fixed blade to expand metal passing through the head.

A powder mixture capable of easily forming a geopolymer solidified body at a site and of producing a geopolymer solidified body having high strength. The geopolymer solidified body is made to be formed by adding water or with water and aggregate to a powder mixture obtained by mixing an active filler and an alkali powder, thus a geopolymer solidified body can be formed by bringing the powder mixture previously prepared into a site and mixing the powder mixture with water or with water and aggregate at the site. Further, any one of a powder of sodium metasilicate, a powder of sodium metasilicate and sodium hydroxide, and a powder of sodium metasilicate and potassium hydroxide is made to be used as an alkali powder of the powder mixture, and therefore geopolymer concrete having high strength can be formed.

The invention relates to a steel bridge deck polymer concrete thin layer vibration paving construction method in a traffic state, and belongs to the technical field of steel bridge deck paving, and the method comprises the following steps: S1, preparation before construction; s2, paving the polymer concrete; s3, surface treatment; s4, joint cutting and maintenance are conducted; s5, dynamic traffic construction coordination; s6, quality control and safety measures; and S7, opening traffic management. According to the steel bridge deck polymer concrete thin layer vibration paving construction method in the open-traffic state, through three innovations of dynamic traffic coordination, material-process-equipment collaborative optimization and safety risk closed-loop management and control, on the premise that smooth traffic operation is guaranteed, the purposes of high efficiency, safety and durability of steel bridge deck paving in the open-traffic state are achieved; meanwhile, construction safety is effectively guaranteed, high economic benefits and social benefits are achieved, a technical normal form is provided for rapid maintenance of urban bridges, and remarkable economic, social and environmental benefits are achieved.

The utility model relates to the technical field of concrete cutting, in particular to a test piece cutting device for polymer concrete water absorption testing, which comprises a bottom plate, a fixing column integrally formed with the bottom plate is arranged at the top of the bottom plate, a cross rod integrally formed with the fixing column is arranged at the top end of the fixing column, and a hydraulic cylinder is arranged at the top of the cross rod. The output end of the hydraulic cylinder penetrates through the cross rod to be connected with a cutter, a connecting device is arranged in the output end of the hydraulic cylinder, the cutter can be rapidly disassembled and assembled from the output end of the hydraulic cylinder through the connecting device, a placing table is arranged below the cutter, and an avoiding device is arranged in the middle of the placing table. Furthermore, the cutter can be prevented from cutting the placing table, and the use experience can be further improved.

This utility model belongs to the technical field of testing equipment, and particularly relates to a testing device for FRP (fiberglass reinforced plastic) anchored seawater sand-polymer concrete. It includes a loading reaction frame and a reaction frame support. The loading reaction frame has a testing cavity, within which is a placement position for placing the FRP anchor. The placement position has a through hole penetrating the testing cavity. The reaction frame support is located between the placement position and the FRP anchor, abutting against the surface of the concrete specimen containing the FRP anchor. The reaction frame support also has a matching hole corresponding to the through hole, which is adapted to the size of the FRP anchor and allows it to pass through. This addition of a matching reaction frame support prevents the formation of a cone-shaped structure on the surface of the concrete specimen during the pull-out test.

The invention relates to the field of civil engineering materials and pipeline structures, in particular to a concrete composite pipe and a machining method thereof. The problems that a composite pipeline is limited in bearing capacity, prone to cracking and poor in durability are solved. The composite pipe sequentially comprises a self-sensing concrete lining layer, a negative Poisson's ratio restraint layer, a fiber reinforced composite layer and an intelligent protective outer layer from inside to outside. The self-sensing concrete lining layer is made of conductive fiber reinforced polymer concrete, and strain self-sensing and damage self-monitoring are achieved. The negative Poisson's ratio restraint layer is of a double-arrow-shaped steel metamaterial structure, and the bearing capacity and ductility of the pipeline are improved; the fiber reinforced composite layer adopts a hybrid fiber grid to provide additional circumferential constraint and prevent corrosion; the intelligent protection outer layer is made of a shape memory polymer composite material, and self-repairing can be achieved. The adhesive is sprayed on the surface of the restraint layer, the fiber reinforced composite layer is wound and laid, the shape memory polymer outer layer is coated through lateral extrusion, and the composite pipe is obtained through staged curing.

The application relates to a rapid-forming geopolymer concrete prefabricated component and a preparation method thereof. The technical scheme is as follows: 125-150 parts by mass of sodium metasilicate is mixed with 200-235 parts by mass of water to obtain a solution; the solution is stirred until it is clear, and is cooled to 5-15 DEG C to obtain an alkali activator; the alkali activator is mixed with 225-285 parts by mass of metakaolin, 60-120 parts by mass of fly ash, 400-600 parts by mass of fine aggregate and 550-850 parts by mass of coarse aggregate, is stirred, is poured, and is shaped for 10-30 min; demolding is carried out, and maintenance is carried out at normal temperature for 2-7 days to obtain the rapid-forming geopolymer concrete prefabricated component. The application has the characteristics of high solid waste resource utilization rate, short forming time, low maintenance cost and high mold flow efficiency, can be directly operated on a construction site and can be rapidly and continuously produced, and the prepared rapid-forming geopolymer concrete prefabricated component has early compressive strength.

Provided is a method for designing a compounding proportion for a geopolymer composition, the method being for producing a geopolymer composition that has desired compressive strength levels at given concrete ages. The method comprises (1) using a given geopolymer material to obtain relationships between water / geopolymer material ratios and compressive strength levels of the cured geopolymer objects at given concrete ages, and determining, from the relationships, a water / geopolymer material ratio which brings about desired compressive strength levels at the given concrete ages.

The utility model relates to the technical field of building material preparation devices, and discloses a geopolymer concrete preparation device which comprises a base, a stirring bin is fixedly connected to the upper surface of the base, and two sliding rails are fixedly connected to the top end of the stirring bin. According to the geopolymer concrete preparation device, liquid on the inner wall of the mixing barrel can be stripped by arranging the liquid scraping barrel, the stripping effect of the liquid on the inner wall of the mixing barrel is further optimized by arranging an air nozzle at the bottom of the liquid scraping barrel, and the liquid on mixing blades is blown off; by arranging second mixing blades attached to the inner wall of a conical structure at the bottom of the mixing barrel, liquid on the inner wall of the bottom of the mixing barrel can be stripped, a mixed solution is promoted to be completely discharged from a liquid discharging pipe, more accurate material proportioning is achieved, and the material completing effect is improved; the liquid can be uniformly added into the stirring bin to be stirred, so that the liquid adding uniformity is improved, the mixing operation effect is further optimized, and the product quality is guaranteed.

The invention discloses coal gangue-graphite tailing-based geopolymer concrete and a preparation method thereof, belongs to the technical field of building materials, and particularly relates to the coal gangue-graphite tailing-based geopolymer concrete and the preparation method thereof. The problems that existing geopolymer concrete is large in drying shrinkage, and coal gangue and graphite tailings pollute the environment and occupy land are solved. The material is prepared from the following components in parts by mass: coal gangue, graphite tailings, fly ash, silica fume, an exciting agent, quartz sand, coarse aggregate and water. The method comprises the following steps: 1, weighing; 2, stage treatment; 3, mixing the materials; and 4, forming and curing the concrete. The two are used for preparing the geopolymer concrete, so that waste resource utilization is realized, environmental pollution and land occupation are reduced, and the cost of raw materials is reduced. A new thought is provided for preparation of geopolymer concrete, and innovative development of a building material technology is promoted.

The utility model provides a novel nylon fiber polymer concrete composite board which comprises a concrete composite board body, and first connecting holes are formed in the periphery of the interior of the concrete composite board body. An insulation board is fixed at the lower part of the concrete composite board; splicing holes are formed in the periphery of the outer side of the concrete composite board; a penetrating connecting column structure is connected into the splicing hole; a reinforcing clamping seat structure is connected in the concrete composite board and the heat insulation board, and is characterized in that the insertion connecting column structure comprises a concrete column, and a steel bar rod is embedded in the concrete column; second connecting holes are formed in the front sides and the rear sides of the interiors of the concrete columns and the steel bars. And a pin shaft rod is inserted into the second connecting hole. According to the utility model, the spliced concrete composite board is reinforced through the arrangement of the interpenetrating connecting column structure, so that the stability of the concrete composite board is improved in the building and splicing processes.

The application provides a kind of lightweight high-strength geopolymer concrete suitable for fabricated building, comprising the following components and weight fractions: waste ceramic powder 90-180 parts, fly ash 45-135 parts, slag 225-315 parts, alkali activator 158-256 parts, fine aggregate 626-765 parts, light coarse aggregate 504-576 parts, mixed fiber 4.5-13.5 parts, and composite admixture solution 1-36 parts. The application uses lightweight high-strength shale ceramic as light coarse aggregate to reduce the self-weight of concrete; through alkali activator to stimulate the potential activity of solid waste such as waste ceramic powder, fly ash and slag, to generate geopolymer, to improve the strength of lightweight aggregate concrete and maintain the lightweight feature; by adding mixed fiber and composite admixture, the performance of lightweight aggregate concrete is further improved. Therefore, the application realizes the balance of lightweight and high strength, and can be applied to various fabricated buildings such as bridges, high-rise buildings, tunnel segments, etc.

The present application relates to the technical field of building materials, and particularly relates to a polymer concrete sand regulator and a preparation method thereof. The polymer concrete sand regulator comprises 40-70 parts of polyurethane emulsion, 3-5 parts of polyvinyl alcohol, 1-3 parts of polycarboxylic acid cellulose, 3-8 parts of calcium silicate, 1-4 parts of limestone powder and 40-80 parts of water. The preparation method comprises the following steps: adding the polycarboxylic acid cellulose, the calcium silicate and the limestone powder into water, uniformly stirring to obtain a mixed solution; then adding the polyvinyl alcohol into the mixed solution, heating to 95-98 DEG C, cooling to room temperature after the polyvinyl alcohol is completely dissolved to obtain an intermediate solution; and then adding the polyurethane emulsion into the intermediate solution, uniformly mixing to obtain the polymer concrete sand regulator. The present application can reduce the sand rate of concrete and enhance the compressive strength of concrete, so that the amount of sand in the concrete can be reduced.

The present application relates to the technical field of high ductility concrete, and particularly relates to high ductility polymer concrete, wherein each cubic meter of the high ductility polymer concrete comprises the following components: steel fiber 25-40 kg / m 3 , volcanic ash 200-250 kg / m 3 , metakaolin 200-250 kg / m 3 , alkali activator 25-75 kg / m 3 , fine aggregate 600-700 kg / m 3 , coarse aggregate 1100-1300 kg / m 3 , and water 150-200 kg / m 3 . The present application also discloses a preparation method of the high ductility polymer concrete, a prestressed cantilever enclosure pile with the high ductility polymer concrete and a construction process of the prestressed cantilever enclosure pile. The high ductility polymer concrete is used as the pouring material, and the process is simple, the energy consumption is low, the environmental pollution is small, the early strength is high, and the maintenance age of the pile is greatly shortened. Meanwhile, the prestressed structure is combined to realize the tension and anchoring of the enclosure pile to form an eccentric prestressed pile, so that the enclosure pile can be stable and safe when bearing external load. The prestressed cantilever enclosure pile has the advantages of light weight and high strength, and is suitable for the engineering fields of foundation pit support, bridge foundation and the like under various complex geological conditions.