536 results about "Breaking strength" patented technology

The invention discloses an automatic single-yarn strength tester and a test method, and relates to the technical field of textile detection equipment, the automatic single-yarn strength tester comprises a single-yarn strength tester used for testing breaking strength, breaking elongation and breaking strength indexes of a single yarn and fiber pure spinning or blended yarn; and the translation mechanism is used for translating a plurality of distributed yarns and carrying out continuous high-efficiency test operation. According to the automatic single-yarn strength tester, a connecting piece is pulled through a tension spring, then a fastening piece and a limiting block are driven to conduct limiting installation on a limiting groove in a rubber pad, the rubber pad can be rapidly replaced after being abraded, the yarn clamping stability is ensured, and the testing accuracy is ensured; the good friction force of the clamping face can be recovered by replacing the rubber pad, it is ensured that the single yarn is tightly fixed in the clamping mechanism, the single yarn cannot move due to unstable clamping in the tensile test process, it is ensured that the test can be conducted smoothly, and the result is accurate.

The invention provides a reinforced pouring type semi-flexible pavement and a construction method thereof, modified magnetic particle micron Fe3O4 (at) SiO2 mesoporous microspheres are doped into a cement-based grouting material, an anti-dispersing agent is doped, and the cement-based magnetic grouting material is prepared. Meanwhile, neodymium iron boron waste is doped into the porous asphalt mixture to serve as a magnetic material to provide a magnetic field, and when the cement-based magnetisable grouting material is injected into the porous asphalt mixture, the magnetic grouting liquid can move directionally and be adsorbed at fixed points under the action of the magnetic field by means of the magnetic adsorption effect; the grouting material for the semi-flexible pavement has the advantages that the filling rate of the grouting material is obviously improved, the bonding performance of an asphalt and cement material interface is obviously improved, the generation of interface cracks is effectively reduced, and the service life of the semi-flexible pavement is prolonged. The semi-flexible pavement cement provided by the invention has good compressive strength, breaking strength, tensile strength, bonding strength, fluidity, dry shrinkage rate and the like, and is an ideal base fluid as a cement-based magnetic grouting fluid.

The invention belongs to the technical field of ceramics, and discloses a preparation method of fracture-resistant and wear-resistant ceramics. The preparation method comprises the following steps: weighing the raw materials in parts by weight; the preparation method comprises the following steps: mixing 40 parts of potassium feldspar, 10 to 25 parts of albite, 1 to 10 parts of kaolin, 1 to 10 parts of serpentine, 5 to 25 parts of dolomite, 2 to 9 parts of nano zirconium oxide, 0.1 to 1 part of nano cerium oxide, 0.1 to 1 part of nano molybdenum disulfide, 0.1 to 0.8 part of silicon carbide fiber, 0.5 to 2.5 parts of polyethylene glycol, 0.1 to 0.6 part of fullerene trifluoromethyl derivative, 0.1 to 3 parts of sodium dodecyl sulfate, 0.1 to 2 parts of sodium tripolyphosphate and 10 to 60 parts of solvent to obtain slurry; and carrying out spray granulation to obtain a blank, carrying out compression molding to obtain a green body, and sintering to obtain the fracture-resistant and wear-resistant ceramic. The breaking strength of the breaking-resistant and wear-resistant ceramic can exceed 70 MPa, and the length of a grinding pit does not exceed 8.5 mm.

The invention discloses a long-life alumina crucible as well as a preparation method and application thereof. The raw material composition of the alumina crucible comprises pretreated quartz particles; the pretreated quartz particles are obtained through a pretreatment process; according to the pretreatment process, the surfaces of fused quartz particles are coated with a modifier through a granulation process, and the pretreatment process specifically comprises the steps that the fused quartz particles, the modifier and a binding agent are mixed, granulated and dried, and pretreated quartz particles are obtained. The fused quartz particle raw material is subjected to modification pretreatment, so that the crystallization behavior of fused quartz is reduced or inhibited, the stability of the fused quartz particles in the crucible firing and high-temperature service process is improved, and the binding property of the fused quartz particles and the fine powder component is enhanced, so that the mechanical properties such as breaking strength and fracture toughness of the alumina crucible are improved; therefore, the service life and the stability of the crucible are improved, and the performance of the alumina crucible can completely meet the requirement of the service life under extreme conditions in the fields of rare noble metal smelting and the like.

The invention relates to the technical field of concrete, in particular to polyvinyl alcohol fiber reinforced concrete and a manufacturing method thereof. The problem that the durability of the constructed concrete is poor is solved. The synthetic raw materials comprise composite cement, composite aggregate, polyvinyl alcohol fiber, a modified water reducing agent, a modified reinforcing agent, a self-repairing capsule and deionized water. The method comprises the following steps: firstly, combining composite cement and composite aggregate, and controlling the stirring time to improve the compressive strength of the concrete; then adding the prepared modified water reducing agent and the modified reinforcing agent to improve the breaking strength of the concrete; then, the density and compressive strength of the concrete are improved by preparing the self-repairing capsule and generating a synergistic effect with the modified reinforcing agent; and finally, polyvinyl alcohol fibers are introduced to generate a synergistic effect with the composite cement to improve the splitting tensile strength of the concrete, so that the durability of the concrete is improved.

The invention provides ultra-high performance concrete and a preparation method thereof, and belongs to the technical field of building materials. The concrete is prepared from cement, silica fume, mineral powder, fly ash, coarse sand, fine sand, a high-performance water reducing agent, a defoaming agent, a retarder, water, steel fibers, modified nano-silica sol and a wetting agent. Wherein the modified nano silicon dioxide sol is prepared by the following method: reacting a double-bond-containing silane coupling agent with unsaturated olefine acid to obtain a carboxyl-containing silane coupling agent, and then performing graft modification on the nano silicon dioxide sol by using the carboxyl-containing silane coupling agent to obtain the modified nano silicon dioxide sol. The concrete disclosed by the invention is compact in internal structure, ultrahigh in compressive strength and breaking strength and high in durability and impact resistance, and the compressive strength during normal-temperature curing is stabilized to be 200MPa or above.

Provided is a rubber composition that is capable of maintaining breaking strength even after thermal deterioration and has an improved ratio of sustainable material.　In order to solve the aforementioned problem, the present invention is a rubber composition containing a rubber component and carbon black, the rubber composition being characterized in that: the carbon black contains recycled carbon black; and after the rubber composition is vulcanized, the ratio (breaking strength after heat deterioration processing / breaking strength at room temperature) of the breaking strength after heat deterioration processing in which a heating process is performed at 100°C for 24 hours to the breaking strength at room temperature is 1.22 or lower.

The invention discloses a blue-and-white glaze and a preparation method and application thereof, and belongs to the technical field of inorganic non-metallic materials (ceramics), the blue-and-white glaze comprises quartz, feldspar, limestone, plant ash and other basic raw materials, zinc oxide, aluminum oxide, lanthanum oxide, cerium oxide and other rare earth elements, and a modified organic additive is introduced. Compared with the prior art, the blue-and-white glaze shows excellent stability in the drying and firing process, the phenomena of cracking and glaze stripping are effectively reduced, the friction coefficient after firing is low, the breaking strength and the breaking modulus are high, the glossiness and transparency of a glaze surface are remarkably improved, and the blue-and-white glaze has important application value.

A preparation method of high-strength and high-density isostatic pressing graphite comprises the following steps: firstly, starting from raw materials, modifying aggregate to increase the specific surface area of the aggregate; secondly, starting from a core process mixing and kneading technical mechanism, asphalt with a higher softening point is adopted as a binder to ensure that the binder asphalt is in contact with the aggregate in a molten state, so that the binder asphalt can be more and more uniformly combined with the aggregate, and therefore, the volume density of the isostatic pressing graphite is improved, the resistivity is reduced, and the strength is improved; the volume density of the obtained isostatic pressing graphite is larger than or equal to 1.5 g / cm < 3 >, the compressive strength is larger than or equal to 80 MPa, the breaking strength is larger than or equal to 40 MPa, and the resistivity is 25-46 omega.m. Compared with the traditional process, the process provided by the invention has the advantages that multiple dipping and roasting processes are reduced, the production period is shortened, and the production efficiency is higher.

The invention relates to the technical field of fibers, in particular to a PTT / PA eccentric core-sheath composite fiber and a preparation method thereof. The comprehensive performance of the fiber is remarkably improved through eccentric structure design and introduction of an alkyl chain into a PA sheath layer to modify PA. The composite fiber is composed of a PTT core layer and a PA sheath layer, the sheath layer contains alkyl chain modified PA, and the fiber shows excellent breaking strength, curling performance and thermal stability. The eccentric structure effectively disperses stress, brittle fracture is avoided, meanwhile, the alkyl chain modified PA enhances the flexibility and interface bonding force of a molecular chain, and the dimensional stability and thermal stability of the fiber are improved. The invention is suitable for the fields of clothing, home textiles and high-temperature industrial fibers, and meets the requirements of high strength, high elasticity and high-temperature stability.

The invention belongs to the technical field of impact fatigue performance detection, and particularly relates to a Hopkinson rod three-point bending sample-based constant-amplitude impact fatigue device, which comprises a dynamic indentation system, an energy absorption system, a strain measurement system and a pressure data acquisition system, and is characterized in that the dynamic indentation system comprises kinetic energy application equipment, an impact rod, an incident rod and a three-point bending test bed; the strain measurement system comprises a strain gauge and a dynamic strain acquisition instrument which are electrically connected, the pressure data acquisition system comprises a force transducer and a data acquisition instrument which are electrically connected, and the energy absorption system comprises a flange, a sleeve and a mass block. The device depends on the Hopkinson rod technology, the momentum well design is ingeniously fused, the problem of secondary loading is effectively avoided, constant-amplitude impact fatigue loading is achieved, key parameters such as the yield point, the elastic limit and the breaking strength of the material are accurately measured, and the reliability and safety of the material are comprehensively evaluated.

The invention relates to the technical field of ceramic production, and discloses a high-temperature hard glaze formula for bone china and a bone china production process. 4%-6% of aluminum oxide; 2%-5% of boron oxide; 3%-7% of zinc oxide; 3%-10% of an alkaline earth metal oxide; 7%-13% of alkali metal oxide; 0.5%-2% of zirconium oxide; and 0.5%-1.5% of titanium dioxide. According to the high-temperature hard glaze formula for the bone china and the bone china production process, a proper amount of boric oxide, zinc oxide and lithium oxide are added into the glaze, so that the thermal expansion coefficient of the glaze is effectively reduced, and the thermal stability of the bone china is improved; by adding aluminum oxide, the breaking strength of the bone china can be greatly improved; by adopting a lead-free formula, lead pollution is avoided, and the environment-friendly requirement is met; through the optimized glaze formula and process, the bone china surface has good glossiness and smoothness.

The invention discloses green and environment-friendly sea sand mortar as well as a preparation method and application thereof, and belongs to the technical field of building materials. The sea sand mortar comprises sea sand, a composite alkali activator, a cementing material and water, the composite alkali activator comprises potassium carbonate and sodium silicate; the cementing material comprises slag powder and fly ash. The preparation method of the sea sand mortar comprises the following steps: S1, pretreating sea sand; s2, mixing and stirring the slag powder, the fly ash and the sea sand in proportion; s3, adding the composite alkali activator, and stirring twice to obtain the sea sand mortar. The sea sand mortar provided by the invention has good compressive strength and breaking strength and short setting time, so that the mortar is suitable for construction application of rapid repair, and also has the characteristics of low carbon and environmental protection.

The invention discloses a detection device and method for detecting the breaking strength of each strut of a powder metallurgy part with multiple struts, and relates to the technical field of detection of the breaking strength of struts of parts. The arched frame is fixedly arranged on the surface of a workbench, the tool assembly is arranged on the bottom surface of a cross beam of the arched frame and used for installing powder metallurgy parts with multiple supporting rods, two pressure sensor installation assemblies are arranged on the surface of the workbench, and the two pressure sensor installation assemblies are located on the left side and the right side of the tool assembly respectively; the workbench is further provided with a driving and impacting assembly which is located between the two pressure sensor installation assemblies and used for driving the pressure sensors to horizontally move in the horizontal direction and the vertical direction and impacting the supporting columns. The device has the beneficial effects that the detection time of the four supporting rods of a single part is greatly shortened, and the detection efficiency of the breaking strength of the four supporting rods of the part is greatly improved.

The invention discloses an ultra-high performance concrete material for a bridge structure as well as a preparation method and application thereof, and particularly relates to the field of concrete. The ultrahigh-performance concrete material for the bridge structure is prepared from the following raw materials in parts by weight: 230 to 240 parts of cement, 140 to 150 parts of fly ash, 50 to 60 parts of silica fume, 250 to 260 parts of fine aggregate, 50 to 60 parts of coarse aggregate, 5 to 9 parts of water reducing agent, 80 to 90 parts of steel fiber, 0.03 to 0.08 part of modified graphene, 3 to 5 parts of expanding agent, 1 to 3 parts of viscosity modifier and 70 to 80 parts of water. According to the prepared ultrahigh-performance concrete material for the bridge structure, the viscosity of the ultrahigh-performance concrete is improved, the compressive strength, the breaking strength, the tensile strength and other properties of the ultrahigh-performance concrete are improved, and the application prospect of the ultrahigh-performance concrete material in the concrete for the bridge is expanded.

The invention discloses a coal gangue-based reinforced cement composite material and a preparation method thereof, and relates to the technical field of building materials. The coal gangue-based reinforced cement composite material is prepared from a coal gangue-based reinforced admixture, calcium ion doped modified multi-walled carbon nanotubes, polypropylene fibers, P.O42.5 Portland cement, metakaolin, silica fume, a polycarboxylate superplasticizer and water, calcium ion doped modified multi-walled carbon nanotubes and a coal gangue based reinforced admixture are cooperatively added into a cement matrix, seamless filling from nanometer to micrometer is achieved, a tough interface transition area is formed, pressure is jointly borne by a compact matrix and a strong interface, the compressive strength and breaking strength of the material are remarkably enhanced, and meanwhile, the compressive strength and breaking strength of the material are greatly improved. Migration of moisture and ions is effectively blocked, and the anti-permeability performance of the material is improved.

The invention relates to the field of refractory castable, in particular to mullite-based modified high-strength refractory castable and a preparation process thereof. The refractory castable is used for solving the problems of low strength and poor wear resistance of the existing refractory castable. The niobium-zirconium alloy and the benzoxazine-PAMAM copolymer are added into the refractory castable, the benzoxazine-PAMAM copolymer wraps a matrix in a three-dimensional network structure, so that the cohesive force is improved, a carbon layer is formed among matrix particles after sintering to improve the overall compactness of the material, micropores in the matrix of the refractory castable can be filled with the niobium-zirconium alloy, the porosity is reduced, and the porosity of the refractory castable is improved. The refractory castable disclosed by the invention can be used for reducing stress concentration, remarkably improving normal-temperature compression resistance and breaking strength, maintaining long-term high-temperature strength and ensuring that the refractory castable can still be kept stable in severe environments such as high temperature, high pressure and corrosion, so that the service life is prolonged, and the production safety is improved.

The invention provides a typical component shot peening strengthening process design method. The typical component shot peening strengthening process design method mainly comprises the steps that 1, typical component shot peening strengthening parameter design technical requirements are determined; 2, a reasonable shot blasting material is selected based on typical component technical requirements; 3, establishing a shot blasting process parameter optimization model based on the neural network; and 4, optimizing and solving shot blasting process parameters on the basis of the surface strengthening requirements of the part. The method is suitable for shot peening strengthening process design with the purpose of improving fatigue strength and stress corrosion breaking strength of typical components, and other parts can be used for reference.

The invention discloses multi-scale hybrid fiber high-toughness concrete and a preparation method thereof. The multi-scale hybrid fiber high-toughness concrete is prepared from 155 to 165 parts by mass of water, 400 to 450 parts by mass of cement, 30 to 70 parts by mass of fly ash, 1000 to 1100 parts by mass of broken stone, 700 to 750 parts by mass of river sand, 0.65 to 0.75 part by mass of a water reducing agent, 390 to 500 parts by mass of steel fibers, 40 to 50 parts by mass of polypropylene crude fibers and 2 to 6 parts by mass of polypropylene fine fibers. The particle size of the broken stones is 5-10 mm; the steel fiber is an end hook steel fiber, and the diameter of the end hook steel fiber is 0.75 mm; the diameter of the polypropylene crude fiber is 0.75 mm; and the diameter of the polypropylene fine fiber is 0.2 mm. According to the invention, the problem that the existing hybrid fiber concrete is relatively low in breaking strength and toughness indexes is solved.

The invention relates to high-strength and heat-resistant glass and a preparation method thereof, and belongs to the technical field of glass manufacturing, and the high-strength and heat-resistant glass comprises the following chemical components: SiO2, B2O3, Na2O, K2O, Al2O3, MgO, CaO, ZnO, Li2O, P2O5, Nb2O5, Re2O7, Gd2O3 and SrO. The average linear thermal expansion coefficient of the high-strength and heat-resistant glass prepared by the invention is (2.94 to 3.23) * 10 <-7 > / DEG C, the softening temperature is 710.1 to 720.4 DEG C, the breaking strength is 206.4 to 214.5 MPa, the impact strength is 49 to 54 cm, and the microhardness is 570 to 608 MPa.

The invention discloses a 3D printing foaming part, a preparation method thereof and application of the 3D printing foaming part in the field of foaming shoe materials, and relates to the technical field of thermoplastic elastomer foaming material processing. According to the preparation method of the 3D printing foaming part, firstly, the foaming wire melt is obtained through a specific extrusion technology, the diameter of the wire melt is controlled in the extrusion process, then the wire melt is controllably stacked under driving of 3D printing equipment, and parameters in the stacking process are adjusted. According to the method for preparing the 3D printing foaming part, a grid structure can be formed through controllable stacking, the plane-shaped part is prepared, the obtained part is moderate in foam hole size, the tensile breaking strength reaches up to 35 N or above, the true density is as low as 0.7 g / cm < 3 > or below, the product is suitable for the field of shoe materials, the extrusion process of the obtained part is stable, the size error is 35 microns or below, and the product has the good application prospect. And the size precision is higher.

The invention discloses a tundish cover castable, and relates to the technical field of tundish refractory materials. The tundish cover castable is prepared from the following raw material components in percentage by mass: 7.8 to 9.6 percent of alumina of 8 to 5mm, 2.6 to 4.3 percent of alumina of 5 to 3mm, 2.6 to 4.3 percent of alumina of 1 to 0mm, 17.4 to 20.8 percent of alumina of 200 meshes, 9.6 to 13 percent of mullite of 5 to 3mm, 22.6 to 26 percent of mullite of 3 to 1mm, 9.6 to 13 percent of mullite of 1 to 0mm, 7 to 8.7 percent of mullite of 200 meshes, 2.6 to 3.5 percent of composite binding agent, 0.8 to 1.7 percent of aluminum silicate, 0.05 to 0.07 percent of SiC nanowire, 0.2 to 0.3 percent of aluminum titanate and the balance of water. The invention discloses a tundish cover castable which comprises the following components in percentage by weight: 0.4-0.7% of alumina micro powder, 0.08-0.11% of sodium tripolyphosphate, 2.6-3.5% of silica fume, 0.87% of steel fiber and 1.3-1.7% of high-alumina cement. Compared with a traditional process, the tundish cover castable has the advantages that the overall performance of the tundish cover castable is remarkably improved, the breaking strength and compression strength of the castable are effectively enhanced, the service life is remarkably prolonged, and the production cost is reduced. And the production cost is greatly saved, and the economical efficiency and the operation rate of continuous casting operation are improved.

The invention relates to the technical field of ultra-high performance concrete high-strength performance detection, and particularly discloses an ultra-high performance concrete high-strength performance detection and analysis method. The method comprises the steps of concrete test piece performance detection grouping, concrete compressive strength performance analysis, concrete flexural strength performance analysis, concrete permeability resistance performance analysis, concrete chemical erosion resistance performance analysis and concrete high-strength performance evaluation. According to the method, whether the high-strength performance of the concrete reaches the standard or not is comprehensively evaluated from multiple aspects of compressive strength, breaking strength, permeation resistance and chemical erosion resistance, and the deformation conditions of the concrete test piece under the action of forces in different directions are displayed from multiple angles, so that the accuracy of compressive strength performance analysis of the concrete is improved; the chemical erosion resistance of the concrete is evaluated from the perspective of whether the compression resistance of the concrete after chemical erosion is changed or not, and the weakening degree of the chemical erosion on the mechanical bearing capacity of the concrete is accurately quantified.

The invention belongs to the technical field of light-weight high-strength aramid fibers, and particularly relates to a light-weight high-strength aramid fiber composite cord fabric and a production method thereof.According to the light-weight high-strength aramid fiber composite cord fabric and the production method thereof, by designing a yarn guide component with the proper roughness range and the twisting speed, friction of the yarn guide component to fibers is reduced, and strength loss is reduced; a certain twisting direction, twisting degree ratio and twisting tension of the A yarn and the B yarn are designed, so that the A yarn and the B yarn contribute the maximum strength at the same time. Therefore, on the premise that the specification of the cord fabric is not changed, the breaking strength of the aramid fiber composite cord fabric is improved.

The invention discloses a high-performance cement-based micro-expansion filling grouting material and a preparation method thereof, and belongs to the technical field of inorganic cementing materials. The high-performance cement-based micro-expansion filling grouting material is prepared from Portland cement, fly ash, graded aggregate, aluminum silicate coated aluminum powder, calcium silicate coated magnesium oxide, tung oil coated iron powder, a calcium formate early strength agent, polycarboxylate superplasticizer powder and water. According to the obtained high-performance cement-based micro-expansion filling grouting material, the fluidity ranges from 432 mm to 441 mm, the 28-day compressive strength ranges from 63.5 MPa to 65.2 MPa, the 28-day breaking strength ranges from 14.3 MPa to 15.1 MPa, the 28-day shrinkage rate ranges from 0.01% to 0.04%, and the 10-time freezing and thawing expansion rate ranges from 0.03% to 0.06%.

The invention discloses a design method of a high-ductility cement-based composite material, which comprises the following steps: S1, carrying out mix proportion design by using Box-Behnken in a response surface method, and designing a three-factor three-response test, the three factors being a water-binder ratio, a sand-binder ratio and a fiber mixing amount; s2, mixing and proportioning the materials according to the three factors in S1, and preparing to obtain the high-ductility cement-based composite material, s3, maintaining the high-ductility cement-based composite material obtained in the S2, and testing the three-response mechanical properties in the S1, wherein the three responses are compressive strength Y1, breaking strength Y2 and equivalent bending toughness Y3; and S4, analyzing the influence of the interaction of the three factors in the S1 on the three responses in the S3, establishing a response surface model equation through variance analysis verification, and verifying and optimizing a result to obtain an optimal mix proportion. A Box-Behnke method in RSM is adopted to establish a regression model with the water-binder ratio, the sand-binder ratio and the fiber mixing amount as influence factors and the compressive strength, the breaking strength and the equivalent bending toughness as response values.

The invention belongs to the technical field of precast concrete component crack repairing and solid waste, and particularly relates to a precast concrete component low-carbon repairing material and a preparation method and a use method thereof. The low-carbon repairing material has good compressive strength, breaking strength and bonding strength, the 28-day dry shrinkage rate is low, and the initial setting time and the final setting time of the low-carbon repairing material are short. By adopting the low-carbon repairing material, not only can the compressive strength and breaking strength of the repaired concrete prefabricated component be improved, but also the repairing time of concrete cracks can be shortened, and the repairing efficiency of concrete can be improved.

The invention discloses a preparation method of microcosmic-macroscopic prestress synergistically enhanced aluminum oxide ceramic and a product of the microcosmic-macroscopic prestress synergistically enhanced aluminum oxide ceramic. Low-shrinkage mineral kyanite particles are utilized on the surface of an aluminum oxide matrix, so that the surface layer of the matrix is subjected to microcosmic compressive stress, and the matrix is strengthened for the first meanwhile, the matrix is secondarily strengthened by wrapping type compact constraint macroscopic compressive stress on the surface layer of the matrix, so that the microcosmic-macroscopic residual compressive stress is synergistically enhanced, and the composite reinforced aluminum oxide ceramic consisting of the aluminum oxide matrix as well as the ion exchange-like layer and the prestressed coating on the surface of the matrix is formed; the breaking strength of the aluminum oxide ceramic is obviously improved, and the service life is prolonged.

The invention discloses a method for determining interlayer tensile strength of a ceramic matrix composite based on a three-point bending test. The method comprises the following steps: acquiring the geometric dimension of an original sample and determining the carbon fiber trend of the original sample; treating and bonding the bonding surface of the original sample to obtain a to-be-tested sample; the geometric dimension of the three-point bending clamp is obtained, and the placement mode of the to-be-tested sample is determined; a standard three-point bending test is carried out, and the maximum loading force in the test process is obtained; and calculating the breaking strength of the to-be-tested sample by using a three-point bending stress formula. A to-be-tested sample is prepared by bonding a plurality of original samples, a standard three-point bending test is carried out by using the to-be-tested sample, and finally, the interlayer tensile strength of the original samples is calculated by using a three-point bending beam stress expression, so that the problems that a test sample is difficult to prepare and a test result is inaccurate in an existing standard test method are solved; the efficiency and the precision of measuring the interlayer tensile strength of the ceramic matrix composite material are improved.

The invention provides a preparation method of a steel slag reinforced composite alkali-activated geopolymer, belongs to the field of preparation of pavement base materials, and solves the problems of overlong coagulation time, lower geopolymer strength, poorer volume stability, higher cost of an alkali activator, difficulty in meeting engineering application and the like in the current geopolymer preparation process. Firstly, potassium hydroxide, sodium carbonate and water glass are used for preparing a composite alkali activator 24 hours in advance, and then the composite alkali activator is mixed with steel slag powder, slag powder and fly ash to prepare a geopolymer precursor. And then uniformly mixing and stirring the alkali activator and the geopolymer precursor to prepare a geopolymer neat paste, standing in a mold for 24 hours, demolding, curing for 3 days, 7 days and 28 days, and evaluating the performance of the geopolymer neat paste according to the compressive strength, the breaking strength and the dry shrinkage coefficient. According to the prepared steel slag reinforced composite alkali-activated geopolymer, sodium carbonate is used for preparing an exciting agent, the setting time is prolonged, the cost is reduced, the strength of the geopolymer is enhanced, and the steel slag reinforced composite alkali-activated geopolymer has very obvious environmental benefits, economic benefits and social benefits.