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81 results about "Polymer concrete" patented technology

Polymer concretes are a type of concrete that use polymers to replace lime-type cements as a binder. In some cases the polymer is used in addition to portland cement to form Polymer Cement Concrete (PCC) or Polymer Modified Concrete (PMC). Polymers in concrete have been overseen by Committee 548 of the American Concrete Institute since 1971.

Green self-compacting field polymer concrete and preparation method thereof

InactiveCN119750977ASlagPolymer concrete
The invention provides green self-compacting field polymer concrete and a preparation method thereof, and relates to the technical field of building materials. The green self-compacting polymer concrete provided by the invention is prepared from the following raw materials: calcined copper tailing powder, slag, fly ash, an alkali activator, machine-made sand, gravel, additional water, a water reducing agent and a retarder. The calcined copper tailing powder, the slag and the fly ash are adopted to completely replace traditional cement to serve as a cementing material, emission of carbon dioxide in the concrete production process is reduced, meanwhile, the pollution problem generated by solid waste is solved, and the environment-friendly effect is achieved; the activity of the concrete can be improved through the calcined copper tailing powder, the fluidity of the concrete can be improved through the calcined copper tailing powder so as to achieve the self-compacting purpose, meanwhile, gaps between aggregates can be better filled, a better bonding effect is achieved, and the fluidity, compactness and strength of the concrete can be improved.
Owner:NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Lithium slag-based salt corrosion resistant concrete pole and preparation method thereof

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.
Owner:HUIZHOU FUYING NEW MATERIAL TECH CO LTD

Novel anchor rod for reinforcing dangerous rock in cold region and intelligent monitoring and early warning system

The invention relates to the technical field of geotechnical engineering reinforcement, in particular to a novel anchor rod for reinforcing dangerous rock in a cold region and an intelligent monitoring and early warning system. Comprising an anchoring system, a heating system and a drainage system, the anchoring system is used for connecting an anchor rod with a dangerous rock, the heating system is used for heating the vicinity of the anchor rod, and the drainage system is used for draining water; the part, anchored into the dangerous rock, of the anchor rod for reinforcing the dangerous rock in the cold region is divided into anchoring sections and heating drainage sections, the anchoring sections and the heating drainage sections are arranged in a staggered mode, and the anchor rod for reinforcing the dangerous rock in the cold region is obliquely upwards arranged in the dangerous rock body at a certain anchoring angle. According to the novel anchor rod for reinforcing the dangerous rock in the cold region and the intelligent monitoring and early warning system, the anchor rod system integrates multiple functions, and the limitation of a traditional anchoring technology is broken through; through the innovative design of the barb structure and the expansive polymer concrete, the stability and durability of the anchor rod are improved, and the anchor rod can adapt to temperature and moisture changes in a cold or humid environment.
Owner:CHONGQING JIAOTONG UNIV

Chemical resistant polymer concrete and methods of use thereof

Chemical-resistant polymer concrete and methods of use thereof are described herein. The polymer concrete comprises a polymer layer and aggregates. The polymer layer is formed by reacting an epoxy vinyl ester resin promoted with cobalt and catalyzed by a peroxide. A concrete substrate is formed by layering the polymer layer and aggregates in thin alternating layers until a desired thickness is achieved. This layering method can reduce shrinkage of the concrete, thereby preventing cracking, deformation or debonding.
Owner:COMPOSITE CONSTRUCTION LLC

Method and system for predicting dynamic growth factor of hybrid fiber reinforced geopolymer concrete

The invention discloses a hybrid fiber reinforced geopolymer concrete dynamic growth factor prediction method and system, and relates to the technical field of composite materials, and the method comprises the steps: obtaining an initial peak stress growth factor based on the ratio of dynamic peak stress to quasi-static peak stress under a given strain rate; based on the ratio of the dynamic elastic modulus to the static elastic modulus, obtaining a dynamic increasing coefficient of the elastic modulus of the concrete; under the condition that the size of the static compression test piece is consistent with the size of the dynamic compression test piece, analyzing the influence of a fiber combination mode, a fiber type, a fiber mixing amount and a strain rate on the dynamic performance of the test piece; introducing fiber characteristic parameters to carry out secondary fitting on the initial peak stress growth factor to obtain a corrected peak stress growth factor; and fitting the dynamic increase coefficient of the elastic modulus of the concrete through a linear function to obtain a corrected elastic modulus increase factor and a critical strain rate. According to the method, the dynamic growth factor of the hybrid fiber reinforced geopolymer concrete can be accurately predicted, so that the impact resistance of the material is obtained.
Owner:ZHENGZHOU UNIV

Marine site polymer concrete capable of resisting steel bar corrosion and preparation method thereof

The invention provides a reinforcing steel bar corrosion resistant marine site polymer concrete and a preparation method thereof, and relates to the technical field of building concrete preparation. The reinforcing steel bar corrosion resistant marine site polymer concrete is prepared from the following components in percentage by mass: 20 to 30 percent of coarse aggregate, 10 to 20 percent of calcium nitrite, 3 to 5 percent of sodium carbonate, 3 to 5 percent of sodium sulfate, 0.6 to 1.0 percent of alcohol amine compound, 5 to 10 percent of zeolite molecular sieve, 3 to 5 percent of nanoscale silicon dioxide powder, 1 to 5 percent of additive and the balance of water. According to the invention, the coarse aggregate is added into the raw materials, the calcined hydrotalcite is small in particle size and large in specific surface area, and can be used as a seed crystal to accelerate the hydration process in the early stage, so that more hydration products and a more compact structure are generated, and meanwhile, the calcined hydrotalcite can be filled in pores of a matrix to improve the pore structure, a slurry-aggregate interface and the like; chloride ions and CO2 are prevented from entering the matrix, and the durability of the sea site polymer and the concrete thereof is improved.
Owner:ZHEJIANG UNIV

Geopolymer concrete curing equipment

The utility model discloses geopolymer concrete curing equipment, and particularly relates to the technical field of concrete curing, the geopolymer concrete curing equipment comprises a curing box, a plurality of support frames distributed up and down are fixedly arranged in the curing box, and geopolymer concrete slabs are arranged on two opposite support frames; and a plurality of maintenance water spraying pipes are fixedly arranged at the outer end of the movable pipe. According to the utility model, the plurality of geopolymer concrete slabs are placed in an overhead manner, and the plurality of maintenance water spraying pipes and the maintenance nozzles are used for simultaneously spraying water to the upper and lower surfaces of the geopolymer concrete slabs for maintenance, so that the water spraying maintenance work of the geopolymer concrete slabs is simpler and more convenient; the situation that the geopolymer concrete slab needs to be overturned during water spraying maintenance is avoided, the workload during geopolymer concrete slab maintenance is greatly reduced, the water spraying maintenance efficiency is high, and the using effect is good.
Owner:LIAONING TECHNICAL UNIVERSITY

Hybrid fiber reinforced geopolymer concrete creep test method and system

The application discloses a kind of hybrid fiber reinforced geopolymer concrete creep test method and system, it is related to hybrid fiber reinforced geopolymer concrete technical field, preparation different fiber species creep test piece;Different loading conditions are set, and the compression creep test is carried out to the creep test piece;In the compression creep test process, the creep data of each creep test piece is collected, and the creep data is handled;Based on the creep data after processing, the creep performance of hybrid fiber reinforced geopolymer concrete is evaluated.The application focuses on the creep behavior of GPC and HFGPC under long-term compression load.By analyzing the influence of fiber type, axial stress ratio and confining pressure level on creep characteristics, the deformation law of fiber reinforced composite materials under long-term service condition is revealed, which provides a theoretical basis for the engineering application of HFGPC and a reference for the prediction of its creep coefficient.
Owner:ZHENGZHOU UNIV

Joule heat curing multi-element solid waste geopolymer concrete and preparation method thereof

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.
Owner:HEBEI UNIV OF TECH

Steel fiber unsaturated polyester polymer concrete applied to road emergency repair and preparation method thereof

The invention discloses a steel fiber unsaturated polyester polymer concrete applied to road emergency repair and a preparation method thereof, and the preparation method comprises the following steps: stirring natural broken stone, natural river sand, cement and steel fiber in a concrete mixer for 60 seconds, then adding a curing agent into resin, stirring for 30 seconds, then adding an accelerant into the mixture, mixing for 30 seconds, and finally adding a curing agent into the mixture, and stirring for 30 seconds to obtain the steel fiber unsaturated polyester polymer concrete. And finally, adding the resin mixture into a concrete mixer, and mixing with the solid material for 120 seconds to obtain the steel fiber unsaturated polyester polymer concrete. According to the invention, the unsaturated polyester resin, the curing agent, the accelerant (cobalt iso-octoate) and the steel fiber are efficiently utilized and mixed to form the curing-free and vibration-free super-early-strength and high-performance concrete. According to the invention, while resources are saved, the compressive strength, crack resistance, ductility and durability of the concrete are remarkably enhanced. The preparation process is simple and easy to operate, has a good application prospect, and can be widely applied to pavement emergency repair engineering.
Owner:GUANGZHOU ENG CONTRCTOR GRP LTD

Polymer concrete and processes for the production of polymer concrete

ActiveDE102011001539B4EpoxyNatural resin
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.
Owner:MEYER POLYCRETE GMBH

Experimental device for chemical corrosion resistance of waste glass sand geopolymer concrete

The utility model discloses a waste glass sand geopolymer concrete chemical corrosion resistance experiment device which comprises a soaking pool and a control panel installed on the side face of the soaking pool, a plurality of soaking cavities are formed in the soaking pool and distributed in an array shape, placing boxes are arranged in the soaking cavities, and the placing boxes are arranged in the soaking pool. The top of the containing box is open, a plurality of liquid inlets are formed in the lower portion of the side face of the containing box, and a positioning frame is installed on the upper side of the soaking pool. According to the chemical corrosion resistance experimental device for the waste glass sand geopolymer concrete, soaking and detection are integrated, the soaked concrete does not need to be moved by personnel, and the mechanical property of the concrete can be detected in time after the concrete is taken out of chemical liquid, so that the influence of sulfuric acid and chlorine salt on the concrete can be conveniently tested; and the experimental device is convenient for setting a plurality of experimental control groups, so that chemical solutions with various concentrations can be conveniently subjected to control tests.
Owner:LUOYANG VOCATIONAL&TECHNICAL COLLEGE

Manufacturing method of geopolymer composition and apparatus therefor

To provide a manufacturing method of a geopolymer composition which enables on-site casting of geopolymer concrete without imposing a high pumping load due to viscosity of a material, and an apparatus therefor.SOLUTION: In a manufacturing method of a geopolymer composition, the geopolymer composition is produced by adding a second material B carried out from a second material conveyance path 2 to a first material A carried out from a first material conveyance path 1 by using the first material conveyance path 1 for conveying the first material A including at least an active filler and the second material conveyance path 2 for conveying the second material B including at least water, thereby it is possible to separately convey a powder material (first material A) and a liquid material (second material B). Accordingly, on-site casting of geopolymer concrete by long-distance pumping can be realized without imposing a high pumping load due to viscosity, compared with a case where materials of the geopolymer composition are mixed from the beginning and conveyed.SELECTED DRAWING: Figure 1
Owner:IHI CORP +2

Ground polymer concrete grouting reinforcement device and method

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.
Owner:YANGZHOU POLYTECHNIC INST

A self-compacting polymer concrete and a preparation method and application thereof

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.
Owner:TSINGHUA UNIVERSITY

Self-compacting polymer concrete for repairing and preparation method thereof

The invention relates to the technical field of building materials, and provides self-compacting polymer concrete for repairing and a preparation method thereof. The self-compacting polymer concrete for repairing is prepared from the following components in parts by mass: 15 to 35 parts of cement, 10 to 20 parts of porous sintered sand, 10 to 20 parts of quartz sand, 5 to 10 parts of gypsum, 25 to 35 parts of aggregate, 0.2 to 1.5 parts of wood fiber, 0.5 to 3 parts of water-retaining polymer, 1 to 3 parts of expanding agent, 0.3 to 1 part of water reducing agent and 0.05 to 0.3 part of early strength agent. According to the technical scheme, the problems of high shrinkage, low strength and poor cohesiveness of polymer concrete in the related technology are solved.
Owner:BEIJING EONZEAL WATERPROOF MATERIAL CO LTD

A waste mud-based geopolymer concrete and a preparation method thereof

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.
Owner:ZHENGZHOU UNIV

A method and system for predicting dynamic growth factor of hybrid fiber reinforced geopolymer 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.
Owner:ZHENGZHOU UNIV

Methods of producing a polymer concrete and carbon fibre reinforced polymer

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
Owner:GRAPHENE INNOVATIONS MANCHESTER LTD

Environment-friendly formula preparation method of polymer concrete release agent

The invention relates to the technical field of building materials, and discloses an environment-friendly formula preparation method of a high-molecular concrete release agent, which is prepared from the following raw materials in parts by mass: 30 to 40 parts of high-molecular polymer, 15 to 20 parts of vegetable fat, 8 to 12 parts of environment-friendly solvent, 5 to 8 parts of nano silicon dioxide, 3 to 5 parts of emulsifier, 2 to 4 parts of modified starch, 1 to 2 parts of preservative and 20 to 30 parts of deionized water. The preparation method comprises the following steps: modifying starch, and sequentially carrying out acetylation reaction, cationization reaction and maleic anhydride grafting reaction, so as to obtain the modified starch with hydrophilicity and adsorbability. The modified starch has a synergistic effect with a high-molecular polymer and nano silicon dioxide, so that a uniform and compact isolating membrane can be formed on the surface of concrete, the lubricity and isolation performance of the release agent are remarkably improved, adhesion of the concrete and a template is effectively avoided, and it is guaranteed that the surface of a concrete member is flat and smooth. And meanwhile, by introducing the modified starch, the biodegradability of the release agent is enhanced, and the problem of residue pollution of a traditional release agent is solved.
Owner:GUANGXI MULINSEN TECH CO LTD

Polymer concrete fluidity testing device

The utility model relates to the technical field of building material testing instruments, in particular to a polymer concrete fluidity testing device which comprises a base, concentric circle scales are arranged in the middle of the base, a fixed column is fixedly installed on the top of the base and is of a hollow structure, a movable column is arranged in the fixed column, and lifting devices are arranged in the fixed column and the movable column. The concrete slump device has the advantages that the slump barrel can be conveniently disassembled and cleaned, and the situation that the subsequent use is affected due to the fact that polymer concrete is left is avoided.
Owner:ZHENGZHOU UNIV

Ingredient conveying device

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.
Owner:NINGBO ROABY TECH INDAL GROUP

Regenerated geopolymer concrete beam-column joint structure with self-repairing function

The invention relates to the technical field of civil engineering, in particular to a regenerated geopolymer concrete beam column joint structure with a self-repairing function, which comprises a connecting groove and a joint, and the connecting groove is provided with a butt joint assembly for butt joint of beam columns, a fixing assembly for fixing the positions of the beam columns and a positioning auxiliary assembly for assisting in butt joint of the beam columns. The positioning auxiliary assembly comprises a plurality of sliding grooves formed in the connecting groove, main positioning blocks are hinged to the interiors of the sliding grooves, and connecting buckles are hinged to the ends, facing the connector, of the main positioning blocks; a plurality of auxiliary positioning blocks are hinged to the outer side wall of the connector, and hasps are hinged to the ends, facing the connecting grooves, of the auxiliary positioning blocks. The auxiliary positioning block is in sliding fit with the sliding groove. The connecting buckle is detachably connected with the hasp; the main positioning block and the auxiliary positioning block are triangular; the main positioning block and the adjacent auxiliary positioning block are the same in height. The structure is complete, and the assembling efficiency and connecting stability of the cross beam and the stand column can be effectively improved.
Owner:ZHENGZHOU UNIV

Method for manufacturing geopolymer concrete

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.
Owner:DAIWA HOUSE INDUSTRY CO LTD

Method for improving high-temperature performance of recycled aggregate slag-fly ash-based geopolymer concrete

PendingCN120757331AFiberPolyvinyl alcohol
The invention discloses a method for improving the high temperature performance of recycled aggregate slag-fly ash based geopolymer concrete, and belongs to the technical field of building materials, the recycled aggregate slag-fly ash based geopolymer concrete comprises the following components: fly ash, slag, an activator, fine aggregate, coarse aggregate and water; the coarse aggregate comprises natural aggregate and recycled aggregate; the recycled aggregate accounts for 25-75% of the mass of the coarse aggregate. The ultrasonic pulse speed, the residual compression resistance, the splitting tension, the fracture resistance and the bonding strength of a sample with the coarse aggregate replacement rate of 50% are equivalent to or even better than those of a sample with the coarse aggregate replacement rate of 0%. After a test piece doped with the PVA fiber is exposed at a high temperature, the number of cracks is reduced, the width of the cracks is reduced, the residual mechanical strength and toughness can be improved, and the compression resistance and breaking strength loss rate of the test piece is lower than that of a test piece not doped with the PVA fiber.
Owner:ZHENGZHOU UNIVERSITY OF AERONAUTICS +1

Tunnel inverted arch, inverted arch filled early strength slurry bone polymeric concrete and construction method

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.
Owner:SICHUAN HIGHWAY PLANNING SURVEY DESIGN AND RESEARCH INSTITUTE LTD

Thermocycling-resistant polymer concrete suitable for construction of Mars base and preparation method of thermocycling-resistant polymer concrete

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.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Methods of producing a polymer concrete and carbon fibre reinforced polymer

PCT designated stageWO2026027898A1Polymer sciencePolymer concrete
Provided is a method of producing a polymer concrete comprising 2D material, and a method of producing carbon fibre reinforced polymer.
Owner:GRAPHENE INNOVATIONS MANCHESTER LTD

Hybrid fiber reinforced geopolymer concrete creep test method and system

The invention discloses a hybrid fiber reinforced geopolymer concrete creep test method and system, and relates to the technical field of hybrid fiber reinforced geopolymer concrete.The hybrid fiber reinforced geopolymer concrete creep test method comprises the steps that creep test pieces of different fiber types are prepared; setting different loading conditions, and performing a compression creep test on the creep test piece; in the compression creep test process, creep data of all creep test pieces are collected, and the creep data are processed; and evaluating the creep performance of the hybrid fiber reinforced geopolymer concrete based on the processed creep data. The method focuses on creep behaviors of GPC and HFGPC under the action of long-term compression load. By analyzing the influence of the fiber type, the axial compression stress ratio and the confining pressure level on the creep characteristic, the deformation rule of the fiber reinforced composite material in a long-term service state is disclosed, a theoretical basis is provided for engineering application of the HFGPC, and a reference is provided for prediction of the creep coefficient of the HFGPC.
Owner:ZHENGZHOU UNIV

Red-mud-based ultrahigh-strength geopolymer concrete and preparation process thereof

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.
Owner:HOHAI UNIV