372 results about "Pervious concrete" patented technology

The invention discloses high-strength corrosion-resistant pervious concrete and a preparation method thereof, and belongs to the technical field of concrete. The concrete is prepared from the following raw materials in parts by weight: 200-300 parts of cement, 1000-1300 parts of coarse aggregate, 20-30 parts of a composite admixture, 10-20 parts of a reinforcing agent, 1-1.5 parts of a water reducing agent, 3-5 parts of an additive and 100-130 parts of water, the reinforcing agent is prepared from modified basalt fiber and styrene-acrylic emulsion according to the mass ratio of (8 to 10): 1; the additive is a SiO2 (at) PDA (at) zeolite composite material; the composite admixture is composed of fly ash and modified steel slag powder according to a mass ratio of 2: 1. According to the invention, by optimizing the proportion of a plurality of composite materials, the interface bonding property with a gel material matrix is improved, the mechanical property and durability are remarkably improved while the water permeability is maintained, and the corrosion resistance of the concrete matrix is enhanced.

The invention discloses a pervious concrete microstructure and water permeability prediction method based on artificial intelligence, and belongs to the technical field of pervious concrete performance prediction.The pervious concrete microstructure and water permeability prediction method comprises the steps that S1, a characteristic coarse aggregate particle three-dimensional geometric model data set library is established; s2, establishing an aggregate three-dimensional close packing model in the pervious concrete structure; s3, re-importing the aggregate three-dimensional close packing model into the image modeling software MIMICS, and reversely generating a two-dimensional cross-sectional image which is a coarse aggregate image; s4, constructing a pervious concrete microstructure prediction model by adopting an artificial intelligence method; s5, inputting the coarse aggregate image into the pervious concrete microstructure prediction model built in the step S4 to obtain a pervious concrete prediction image and porosity information; s6, establishing a connected pore model required by permeation to realize the prediction of the water permeability performance; according to the artificial intelligence-based pervious concrete microstructure and water permeability prediction method provided by the invention, refined prediction of the water permeability coefficient of the pervious concrete is realized.

The invention discloses a pervious concrete reinforcing agent which is prepared from modified kaolin, a water-retaining agent, an active filler and a sodium lignin sulfonate aqueous solution according to the substance mass ratio of (4-7): 3: (2-5): 5. According to the pervious concrete reinforcing agent, the modified kaolin is matched with the water-retaining agent, the active filler and the sodium lignin sulfonate aqueous solution, the compressive strength performance and the wear resistance of a product are optimized through blending and coordination of the raw materials, coordinated improvement of water permeability, strength and wear resistance is achieved, and meanwhile the product is remarkable in anti-freezing and weather-resistant stability effect.

The invention relates to an ecological pervious concrete revetment and a construction method thereof. The ecological permeable concrete revetment comprises a plain soil base layer with a layered tamping structure, the plain soil base layer comprises an overwater part and an underwater part, and the part, on the overwater part, of the plain soil base layer has a drainage slope; the water-permeable concrete layer covers the plain soil base layer, and the surface of the water-permeable concrete layer is provided with uniform and fine galling textures; the pervious concrete layer comprises gravel aggregate with the particle size of 5mm-15mm and a cementing material; wherein the cementing material comprises ordinary Portland cement and fly ash in a weight ratio of 17: 3, as well as a water reducing agent and an air entraining agent, and the water-cement ratio of the cementing material is 0.27-0.29; and the protective layer covers the pervious concrete layer. By means of the novel revetment structure and the construction method thereof, the problem that an existing revetment structure cannot give consideration to structural strength and water permeability at the same time is solved, and the novel revetment structure and the construction method thereof can promote water circulation and healthy development of an ecological system.

The invention discloses high-strength durable pervious concrete and a preparation method thereof, and belongs to the technical field of building materials. The concrete is prepared from the following raw materials in parts by weight: 160 to 220 parts of cement, 1200 to 1600 parts of coarse aggregate, 170 to 230 parts of fine sand, 160 to 200 parts of water, 3 to 4.5 parts of polycarboxylate superplasticizer, 5 to 15 parts of silica fume, 1 to 3 parts of polypropylene fiber, 8 to 12 parts of modified nano cellulose and 5 to 7 parts of flexibilizer, wherein the flexibilizer comprises modified graphene oxide, propylene glycol monomethyl ether and polyisoprene rubber. The interface compatibility is enhanced through the modified nanocellulose, microcracks are reduced, the bonding strength of aggregate and cement is improved, and the compressive strength is improved; the toughening agent component endows the concrete with toughness and durability, the toughening agent component and the toughening agent component have a synergistic effect, and the concrete prepared by mixing the various raw materials has excellent mechanical properties and durability on the basis of good water permeability, and has a wide market application prospect.

The invention discloses a sponge city seepage and drainage structure and a sponge city water circulation system, and relates to the technical field of sponge city construction. A capillary air flotation grading pretreatment unit, a rhizosphere electro-catalysis layer and a mineral conversion filler layer are sequentially arranged below the permeable pavement layer in the rainwater permeation direction, and the drainage layer is a piezoelectric drainage layer; according to the method, blockages are subjected to capillary air flotation classification, minerals are converted into purification carriers, solid waste outward transportation is avoided, and heavy metal pollution is prevented; the water circulation end depends on photovoltaics, an external power grid is not needed, and carbon is reduced; sensor linkage adapts to a purification mode of high / low-pollution rainwater, and a straw self-cleaning function at the seepage and drainage end is prevented from being interrupted; the magnetic sensitive medium is prepared by converting blockages, outsourcing is avoided, and the cost is reduced; the ultrafine particles in the by-products assist in purification, the uleucite is used for preparing the pervious concrete, and the zeolite is used for improving the soil, so that environmental protection and resource regeneration are realized.

The invention discloses cold bonding ceramsite and a preparation method and application thereof in pervious concrete.The cold bonding ceramsite is prepared from, by mass, 70-120 parts of solid waste base material, 5-8 parts of activating agent and 5-10 parts of binder, and the solid waste base material is prepared from dredged sludge, fly ash and waste concrete powder. The cold-bonded ceramsite is prepared from the solid waste base material under the conditions of microwave radiation, multi-element activation, granulation and staged maintenance, a high-temperature calcination process is not involved, the solid waste base material is fully utilized, the energy consumption of ceramsite preparation is reduced, solid waste resourceful treatment is realized, the land pressure of landfill is relieved, and the consumption of non-renewable resources is reduced. The prepared cold-bonded ceramsite is applied to the preparation process of the pervious concrete, the obtained pervious concrete has high strength, freeze-thaw resistance and salt corrosion resistance, and the comprehensive performance is remarkably improved.

The utility model discloses a cement pervious concrete pavement paving device which comprises a bottom plate, an installation groove is formed in the front end of the bottom plate, a spiral auger is movably installed in the installation groove, supporting rolling rollers are installed on the two sides of the spiral auger, a second belt pulley is installed on the left side of the spiral auger, and a first belt pulley is installed on the right side of the second belt pulley. And a second motor is installed on the left side of the upper portion of the bottom plate, a first belt wheel is installed at the output end of the second motor, a transmission belt is connected to the lower portion of the first belt wheel, and a connecting bearing is installed in the middle of the interior of the bottom plate. According to the cement pervious concrete pavement paving device, piles of cement pervious concrete are spread towards the two sides by arranging the spiral packing auger, then the spread cement pervious concrete is spread flatly by rotating the spreading plate, then the spread cement pervious concrete is scraped flatly again through the scraping plate, and redundant cement pervious concrete is scraped away; and finally, primary compaction is performed through the flattening roller, so that the laying efficiency of the cement pervious concrete pavement is greatly improved.

The invention relates to the technical field of concrete, in particular to a high-strength and high-permeability concrete mix proportion design method based on aggregate characteristics. The method comprises the following steps: firstly, providing a dynamic multivariate prediction model for comprehensively analyzing a relationship between aggregate characteristics and concrete performance, and realizing selection scheme optimization of the aggregate characteristics through regression analysis of a strength and water permeability objective function; secondly, the invention provides an inertia self-adaptive particle swarm optimization algorithm, and by dynamically adjusting inertia weights and learning factors of particles, efficient solution and optimization of a dynamic multivariate prediction model are realized, optimal aggregate characteristic parameters are accurately searched and determined, and optimal balance of concrete performance is ensured to be realized under various requirements; finally, a cost calculation function is provided for the mix proportion of the high-strength and high-permeability concrete, the cost required by the mix proportion scheme is evaluated through accurate accounting of all raw materials and other costs, and a scientific economic decision basis is provided for design of the mix proportion of the concrete.

The utility model relates to the technical field of slope protection, in particular to an artificial lake ecological protection slope based on pervious concrete. The overwater part sequentially comprises a slope greening layer used for planting ecological green plants, a soil-based nutrition layer used for supplying nutrients to the green plants, an ecological water-permeable concrete layer used for enhancing the drainage performance and providing stable support and a first sand gravel cushion layer laid on foundation soil and used for dispersing loads of an upper structure from outside to inside. The underwater part sequentially comprises a second sand gravel cushion layer and an inverted filter ecological concrete layer from inside to outside, wherein the inverted filter ecological concrete layer is used for adsorbing pollutants and filtering a water body. The utility model aims to solve the problems of insufficient slope protection water permeability and insufficient nutrient supply.

The invention relates to the technical field of road engineering material design and calculation, and discloses a calculation method for pervious concrete double-layer grating arrangement parameters. According to the method, a geogrid working performance coefficient, a grid interlayer spacing optimization factor, an effective permeability rate correction coefficient, an interlayer synergistic effect coefficient, a layered stress diffusion factor and a permeability comprehensive index are introduced for the first time, a quantitative evaluation model is constructed, and a multi-dimensional performance index and a structure response function are constructed. The structural mechanical behavior and permeability of the pervious concrete are comprehensively considered, and the double-layer arrangement position and interlayer spacing of the geogrid are determined. The blindness of traditional empirical layout is overcome, and the method is suitable for road structure design under medium and heavy traffic loads. According to the method, a scientific and computable double-layer arrangement parameter determination method is established, and collaborative optimization of the grid enhancement effect and the water permeability performance is achieved.

The application relates to the technical field of slope engineering prevention, in particular to an expansive soil ecological supporting structure based on recycled water permeable concrete and a construction method, which comprises a waterproof film coating layer, a recycled water permeable concrete layer, a backfill soil layer, a retaining board and a bottom EPS foam board, the waterproof film coating layer is formed by uniformly spraying waterproof film coating on a slope surface, the recycled water permeable concrete is sawtooth-shaped and is poured on the waterproof film coating layer, the backfill soil is covered on the recycled water permeable concrete layer, the retaining board is arranged at the bottom of the expansive soil slope, and the bottom EPS foam board is arranged between the retaining board and the expansive soil slope. Based on the concept of a sponge city, the application forms a slope water storage structure by using the recycled water permeable concrete and the waterproof film coating layer, achieves the effect of 'flood drainage and drought replenishment', reuses engineering slag soil and waste degradable materials, achieves the purpose of low carbon, simultaneously utilizes the anchoring effect of the vegetation root system, and realizes long-term green and low-carbon protection of the expansive soil slope.

The present invention describes a multi-component inorganic capsule anchoring system for chemically fastening anchors and post-installed reinforcements in a mineral matrix, comprising a curable powdered aluminum cement component A and an initiator component B for initiating a curing process in an aqueous phase, wherein the powdered aluminum cement component A is an aluminum cement component based on powdered calcium aluminate cement, and wherein component B comprises an accelerator component and water. Furthermore, the invention relates to a method for chemically fastening anchoring members, preferably metal anchors and post-installation reinforcements, in a mineral matrix, such as a structure made of bricks, concrete, pervious concrete or natural stone.

A multi-component mortar system contains a curable aqueous-phase aluminous cement component A and an initiator component B in aqueous-phase for initiating the curing process. Component A further contains at least one plasticizer, water, and at least one blocking agent selected from phosphoric acid, metaphosphoric acid, phosphorous acid, and phosphonic acids. Component B contains an initiator, at least one retarder, at least one mineral filler, and water. A multi-component system is useful, which is ready-for-use, for chemical fastening of anchoring means, preferably of metal elements, in mineral surfaces, such as structures made of brickwork, concrete, pervious concrete or natural stone as well as its use for chemical fastening of anchoring means.

The utility model belongs to the technical field of pervious concrete curing, and discloses a pervious concrete moisturizing curing plate which comprises a curing plate body, and a rectangular groove is formed in the middle of the curing plate body. The moving mechanism is connected to one side of the rectangular groove in a sliding mode, a water distribution plate is fixedly installed on one side of the moving mechanism, and a plurality of shower heads are fixedly installed at the bottom of the water distribution plate; and the air injection frame is of a U-shaped structure. According to the pervious concrete moisturizing curing plate, water flow is changed into a fine rain shape through the shower head and sprayed to the surface of concrete, in the water spraying process, the centrality of water spraying operation is guaranteed through airflow intervention, meanwhile, the water distribution plate is driven by the moving mechanism to move left and right along the curing plate body, and the water distribution plate is driven to move left and right along the curing plate body. In this way, all-directional maintenance can be conducted on the pervious concrete, automatic maintenance can be achieved without consuming manpower, and the maintenance efficiency and quality are greatly improved.

The invention relates to an ecological recycled coarse aggregate pervious concrete mix proportion design method. The method comprises the following steps: S1, recycled coarse aggregate preparation and performance test; s2, determining the void ratio of the mixed coarse aggregate under the compaction condition; s3, determining the volume ratio of the mixed coarse aggregate in 1 m < 3 > of the pervious concrete through the regulatory factor; s4, determining the use amount of a cementing material; s5, determining the use amount of the cement and the mineral admixture; s6, determining the use amount of the recycled coarse aggregate and the natural coarse aggregate; s7, determining the total water consumption; and S8, checking the performance of the ecological recycled coarse aggregate pervious concrete, and adjusting the mix proportion of the ecological recycled coarse aggregate pervious concrete according to a test result. The design method is clear in overall thought, the design steps are simple and easy to follow, waste of materials, time, manpower and the like caused by repeated fitting is avoided, and good practicability and operability are achieved.

This invention provides a perimeter structure and construction method for road manhole covers. The perimeter structure includes a base reinforcement section, formed by pouring a first layer of concrete into the excavated surface of the roadbed, with multiple layers of steel mesh installed within the base reinforcement section; a permeable load-bearing section, formed by pouring permeable concrete above the base reinforcement section, with a drainage channel; a drainage pipe connected to the drainage channel, used for connecting to a drainage system; and an anchor, the lower end of which is connected to the multiple layers of steel mesh, and the upper end passing through the permeable load-bearing section and connecting to the manhole ring, used for installing the manhole cover. This invention provides a construction method for the perimeter structure of road manhole covers, constructing multiple layers of steel mesh, anchors, and drainage pipes in the excavated surface of the roadbed, and forming a composite load-bearing structure through pouring, used for installing the manhole ring and manhole cover. The beneficial effects of this invention are: reducing the risk of manhole ring settlement, increasing the drainage speed of water accumulation around the manhole, and reducing rainwater erosion of the roadbed.

This invention discloses a shock-absorbing and pressure-reducing permeable concrete pile reinforced with recycled tires and its construction process. The pile structure comprises a pile body formed by vertically connecting several precast permeable concrete columns; compressible rubber blocks containing permeable holes and ball joints are fixed between adjacent permeable concrete columns; a layer of non-woven fabric is wrapped around the permeable concrete pile to prevent soil from clogging the concrete holes; and a ring-shaped mesh skeleton structure made of recycled tire strips is used to wrap and fix the non-woven fabric around the pile. This invention, by comprehensively utilizing the permeable concrete columns, the ring-shaped mesh skeleton structure, and the compressible rubber blocks containing permeable holes and ball joints, can achieve pile stability under small seismic loads, prevent pile breakage under large seismic loads, and allow the pile to quickly return to its original position after the seismic load disappears, thus ensuring a comprehensive application effect of "unmoved by small earthquakes, unyielding in large earthquakes, and self-repairing after earthquakes."

The invention relates to the technical field of pavement structures, in particular to a high-bearing-capacity permeable pavement structure based on ecological concrete.The high-bearing-capacity permeable pavement structure comprises a surface ecological permeable concrete layer, a high-bearing-capacity supporting framework layer and a stable base layer, a mounting groove is formed in one side of the top end face of the surface ecological permeable concrete layer, and a first connecting hole is formed in the side wall of the mounting groove through a drainage hole; a mounting hole is formed in one side of the top end face of the surface ecological water-permeable concrete layer, and the lower side of the mounting hole communicates with a second connecting hole. According to the ecological water-permeable system, the surface ecological water-permeable concrete layer, the high-bearing supporting framework layer and the multi-stage filtering drainage structure are introduced into a traditional water-permeable system, and cooperative improvement of the bearing performance and the water-permeable performance is achieved; according to the structure, high strength and stability are guaranteed, meanwhile, rainwater is purified step by step through the coarse filter layer, the medium filter layer, the fine filter layer and filter cotton arranged in the filter box, pores are effectively prevented from being blocked, and long-term water permeability is maintained.

The invention discloses high-water-permeability concrete prepared from construction waste and a preparation method of the high-water-permeability concrete, and relates to the technical field of concrete. The invention relates to high-water-permeability concrete, which is prepared from 300 to 360 parts of cement, 750 to 900 parts of modified recycled aggregate, 500 to 600 parts of natural coarse aggregate, 100 to 160 parts of slag powder, 50 to 75 parts of alkali activator, 4.5 to 7 parts of reinforced fiber, 50 to 60 parts of coupling agent, 1.8 to 2.4 parts of water reducing agent I and 126 to 160 parts of water, the modified recycled aggregate is specifically prepared by mixing and modifying recycled aggregate prepared from construction waste by diatomite, metakaolin, quick lime and the like. The recycled aggregate is modified, so that the adaptability of the recycled aggregate prepared from the construction waste and concrete slurry is improved, the modified recycled aggregate can be effectively bonded with the concrete slurry, the pore structure of the pervious concrete is improved, the water permeability of the pervious concrete is improved, and the service life of the pervious concrete is prolonged. And the pervious concrete can still have better water permeability after being used for a long time.

The present application relates to a kind of cellulose modified water purification type pervious concrete and preparation method, comprising: microcrystalline cellulose modification, with diabase as aggregate, with cement, fly ash, modified microcrystalline cellulose and water are mixed, forming, demolding, it is obtained.The present application, modified microcrystalline cellulose and fly ash form synergistic effect, the cement paste of pervious concrete is improved, and water retention can inhibit the phenomenon of slurry bleeding hole appears, and the structure performance of pervious concrete skeleton and paste is stable.Pervious concrete compressive strength, flexural strength increases, and because slurry bleeding hole phenomenon reduces, the water permeability of pervious concrete increases.Modified microcrystalline cellulose makes the purification capacity of pervious concrete further improve, and C-S-H gel in modified pervious concrete cement paste and modified microcrystalline cellulose ligand are coordinated to realize the adsorption of Cu (II), Cr (III), Zn (II), Pb (II) ion in water.Modified microcrystalline cellulose makes cement paste early hydration process slow down, and it is beneficial to reduce the generation of early surface crack of pervious concrete paste.

The invention discloses pervious concrete and a strength prediction and design method thereof, and belongs to the technical field of building materials. The invention discloses a pervious concrete strength prediction and design method. The method comprises the following steps: S1, designing nonporous concrete reference strength according to a water-binder ratio, a cementing material and an additive; s2, constructing a bilinear strength prediction model, and dividing the relation between the strength and the porosity of the pervious concrete into two sections of linear intervals for fitting; and S3, determining the strength of the pervious concrete by using the bilinear strength prediction model in combination with the target porosity. The 28-day compressive strength of pervious concrete and imperforate concrete under the condition of the same water-binder ratio is compared and analyzed, a segmented linear relation model between the strength coefficient fc / fc0 and the porosity p is provided, the slurry wrapping thickness is controlled by combining the aggregate stacking density, the slurry rate and the slurry yield stress, and therefore designable and controllable forming of the pervious concrete is achieved. The problems that in existing pervious concrete design, the strength is difficult to predict, the porosity is difficult to accurately control, and the slurry wrapping thickness cannot be quantified are solved.

The utility model provides a terrace structure. The terrace structure comprises a sand-based permeable surface layer and a concrete permeable inner layer, the sand-based permeable surface layer is arranged above the concrete permeable inner layer; the thickness of the sand-based water-permeable surface layer is smaller than that of the concrete water-permeable inner layer; the breaking strength of the sand-based water-permeable surface layer is greater than that of the concrete water-permeable inner layer. According to the utility model, the sand-based permeable surface layer and the concrete permeable inner layer jointly form a terrace structure, so that rainwater can infiltrate downwards through a pavement structure and is retained and stored in the high-strength light permeable concrete, and sponge pavement really has a'storage 'function; in addition, the stored rainwater is evaporated into the air in sunny days, and the good effect of relieving the urban heat island effect is achieved.

The utility model discloses a pervious concrete permeability performance testing device which comprises a water storage tank, an upper fixing seat and a lower fixing seat which are sequentially connected from top to bottom, and the centers of the water storage tank, the upper fixing seat and the lower fixing seat are located on the same straight line; the upper fixing base and the lower fixing base are connected through a telescopic mechanism, and a containing groove used for containing the pervious concrete mold is formed between the upper fixing base and the lower fixing base; the side wall of the upper fixing seat is communicated with a first pressure measuring pipe, the side wall of the lower fixing seat is respectively communicated with a second pressure measuring pipe and a drainage port, and the drainage port is connected with a drainage valve. By arranging the telescopic mechanism, pervious concrete molds with different heights can conveniently enter the placing groove from the side face so as to carry out the water permeability performance test, and meanwhile, the water permeability performance parameters of pervious concrete can be rapidly measured through visual reading of the pressure measuring pipe.

A kind of sponge city pervious concrete hidden rainwater well lid and construction method, hidden rainwater well lid, including well seat, well seat is equipped with hidden well ring, upper well lid is installed on hidden well ring, recess is formed in the center of hidden well ring, shunt block is installed in the center position of recess, partition plate is installed on the upper surface of hidden well ring, partition plate is distributed in spiral shape, flow channel is arranged between adjacent partition plates, liquid diode is uniformly arranged on the surface of flow channel;Metal mesh, rotary motor are installed on the lower surface of hidden well ring, rotary motor is connected with multiple cleaning arms, through the structure of hidden well ring, shunt block, partition plate and flow channel, water droplets gradually gather to form water flow in flow channel under the action of gravity and fluid diode, flushing is carried out along flow channel, effective collection and shunting of rainwater are realized.Meanwhile, the application of fluid diode enables water flow to flow spontaneously along a specific direction, effectively avoids sand accumulation, and reduces maintenance cost.

This invention discloses a modified fiber-reinforced composite high-permeability concrete and its preparation method in the field of concrete technology. The concrete comprises the following components: silicate cement, fly ash, coarse aggregate, composite fiber, waterborne polyurethane emulsion, activated biochar, water-reducing agent, composite bacterial solution, photocatalyst, and water. By adding modified polypropylene fiber, modified carbon fiber, waterborne polyurethane emulsion, and activated biochar to the concrete raw materials, this invention enhances the mechanical properties of the concrete, improving its stability, compressive strength, and crack resistance. It also increases the void structure of the concrete, further improving its permeability. Simultaneously, the addition of microbial solution and photocatalyst enhances the self-healing and self-cleaning capabilities of the concrete.

The invention discloses high-performance pervious concrete and a preparation method thereof, and belongs to the technical field of civil engineering materials. Based on 100 parts of P.O42.5 cement, the cement comprises the following components in parts by weight: 520-640 parts of gravel, 60-70 parts of sand, 4-5 parts of siliceous active enhancer and 30-40 parts of water. Preferably, the particle size of the gravel is 10-20 mm, and the particle size of the sand is 0 The preparation method comprises the following steps: dry-mixing the cement, the sand and the gravel, adding the water and the reinforcing agent, stirring, inserting and tamping layer by layer, compacting and curing. The obtained concrete has high permeability coefficient and high compressive strength, is low in cement consumption, and is suitable for sidewalks of sponge cities, residential roads and parking lots.

The utility model discloses a road bridge and tunnel section composite pavement structure which comprises a roadbed, a concrete base layer is arranged on the top of the roadbed, inclined diversion trenches are formed in the top of the concrete base layer at equal intervals, an isolation layer is arranged on the top of the concrete base layer, and a gravel layer is arranged on the top of the isolation layer. A gravel layer is arranged on the top of the roadbed, a pervious concrete layer is arranged on the top of the gravel layer, an asphalt pavement layer is arranged on the top of the pervious concrete layer, prefabricated drainage components are arranged on the two sides of the top of the roadbed, and drainage channels are formed in the prefabricated drainage components. The utility model relates to the technical field of road bridge and tunnel pavement structures, and solves the problems in the prior art that the pavement drainage performance of a road bridge and tunnel section is poorer, and under extreme weather conditions such as rainstorm or continuous rainfall, unsmooth drainage is easy to occur to cause pavement water accumulation, so that not only is the driving safety influenced, but also major traffic accidents are possibly caused.

The present invention discloses a kind of permeable concrete brick of load metal organic framework material and its preparation method, the method comprises the following steps: a silicon aluminum material is mixed with an alkali activator to prepare a geopolymer slurry, an organic amine reagent is added, and the modified geopolymer slurry is obtained by stirring evenly after mixing; an aggregate is added to the modified geopolymer slurry, and after stirring evenly, it is loaded into a test mold, and demoulding is obtained after standing for 1 2d to obtain a geopolymer permeable concrete brick, a metal salt solution is evenly sprayed on the geopolymer permeable concrete brick, and steam curing is performed for 3 5h before taking it out; an organic ligand solution is evenly sprayed on the geopolymer permeable concrete brick after curing, and then steam curing is performed for 18 22h. After curing is completed, it is taken out and dried in an oven at 80 120 ℃ for 20 30h to obtain a permeable concrete brick of load metal organic framework material. The permeable concrete brick prepared by the present invention has good adsorption efficiency and can give play to excellent water purification function in actual application.

The utility model relates to the technical field of water-permeable terraces, in particular to an ecological water-permeable concrete terrace which comprises a plain soil layer, a water-permeable concrete layer is laid on the top face of the plain soil layer, a water-permeable pavement layer is laid on the top face of the water-permeable concrete layer, a drainage ditch is arranged on the left side of the plain soil layer, and a well lid is laid on the top face of the drainage ditch. A water drainage structure is installed in the pervious concrete layer and comprises a water drainage pipe, the water drainage pipe is laid on the inner side of the pervious concrete layer, a movable cavity is formed in the bottom end of the water drainage pipe, a water drainage opening is formed in the bottom face of the water drainage pipe, and a cylindrical groove is formed in the left end of the movable cavity; a connecting cylinder is integrally formed at the bottom of the left end of the drainage pipe. By arranging the movable water baffle, the position between the through hole and the water outlet can be adjusted during moving, so that the functionality of the water drainage pipe is improved, the rainwater guiding effect of the water drainage pipe is guaranteed, and rainwater waste is reduced.