151 results about "Pervious concrete" patented technology

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 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.

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 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 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 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.

The invention relates to the technical field of roadway construction, in particular to a pervious concrete rain drainage facility combined construction device and method. According to the technical scheme, the device comprises a driving machine and a road roller at the front end of the driving machine, wherein a trench excavation machine and a hopper are detachably mounted at the rear end of the driving machine; an auger blade and a stirring shaft are arranged in the hopper, and an adjustable moving mechanism and a flattening mechanism are installed at the bottom of the hopper through a bottom frame. The auger blade drives the feeding pipe and the blanking spray head to swing back and forth through bevel gear transmission and a bidirectional screw rod to uniformly distribute materials; the flattening mechanism is provided with a pressing roller with an eccentric wheel, and vibration compaction can be achieved. The method comprises the steps of foundation soil compaction, blind ditch construction, gravel subbase layer laying, pervious concrete base layer vibration compaction, maintenance and pervious surface layer laying. Multiple permeable structure layers are laid through one machine, material distribution is uniform, compaction is controllable, the permeable porosity is effectively kept, and the rainwater collection efficiency and the construction quality are improved.

The application belongs to the technical field of road engineering construction, and discloses a water-permeable road construction method, which comprises the following steps: S1, calculating the road bearing capacity, the water-permeable rate, and the aperture and opening interval of the water-permeable hole; S2, laying a road base and compacting it; S3, laying a water-permeable hole mold on the road base according to the opening interval; S4, pouring concrete to form a concrete roadbed and performing roughening treatment on the surface of the concrete roadbed; S5, preparing water-permeable concrete according to the water-permeable rate, pouring and filling the water-permeable concrete into each water-permeable hole on the concrete roadbed, and forming a water-permeable concrete layer on the concrete roadbed; and S6, laying a water-permeable asphalt layer. The construction method increases the water-permeable hole in the ordinary concrete roadbed, pours water-permeable concrete, combines the ordinary concrete roadbed with the water-permeable concrete, improves the water-permeable physical properties of the roadbed and increases the structural strength, thereby increasing the bearing capacity and water-permeable rate of the road.

The application relates to the technical field of building materials, in particular to a pervious concrete and a preparation method thereof. The pervious concrete is prepared from raw materials including the following components in parts by weight: water 100-125 parts, cement 270-300 parts, coarse aggregate 1300-1500 parts, water reducing agent 8-15 parts, single-end hydroxyl silicone oil 15-40 parts, tannic acid 25-50 parts and amphiphilic cellulose 50-80 parts. The pervious concrete prepared by the application has good compressive strength and freeze-thaw resistance.

The pavement structure suitable for the flood detention area comprises a building aggregate roadbed, a gravel leveling layer, a graded gravel hardcore, a pervious concrete base layer, an isolating layer and an assembly type prestressed concrete pavement slab layer which are sequentially arranged from bottom to top, the structure is characterized in that the building aggregate roadbed, the broken stone leveling layer, the graded broken stone hardcore and the pervious concrete base layer are all made of water-resistant materials; the fabricated prestressed concrete panel layer is formed by paving continuously paved pre-tensioned pavement panels, and the adjacent pre-tensioned pavement panels are connected through self-stress seams. According to the pavement structure suitable for the flood detention area, the waterproof material is adopted, the mechanical property of each layer is basically not changed when the pavement structure is immersed in water, the strength is not reduced, water in each layer of a road can quickly flow out after the water level is reduced, and the road is not influenced in the later period; and the flood cannot pass through the crack to corrode the steel strand, so that the whole road is large in bearing capacity and high in durability.

The invention belongs to the technical field of building materials, and particularly relates to design and a preparation method of full-replacement recycled aggregate pervious concrete. The method specifically comprises the steps of aggregate crushing and screening, fractal grading design calculation, coarse aggregate compounding, pervious concrete preparation and the like. According to the method, the pervious concrete is prepared by completely replacing natural aggregate with the recycled aggregate, and the optimal fractal gradation of the full-substitution recycled aggregate is finally determined by analyzing the influence of different fractal gradation of the full-substitution recycled aggregate pervious concrete on the mechanical property and the permeability coefficient of the full-substitution recycled aggregate pervious concrete. The prepared full-substitution recycled aggregate pervious concrete has excellent mechanical strength and water permeability. The method is simple in process and controllable in cost, high-value utilization of the recycled aggregate conforms to the concept of green building materials, and the method can be widely applied to preparation of the recycled aggregate pervious concrete and has remarkable environmental protection value and application prospects.

The present application relates to the technical field of concrete pile forming, and particularly discloses an in-situ prefabricated mold for a water-permeable concrete pile and a pile forming method.The in-situ prefabricated mold for the water-permeable concrete pile comprises a drill hole inner support assembly, the drill hole inner support assembly comprises an elastic screw rod, the elastic screw rod is provided with a water-permeable cloth, a limiting tube is arranged in the elastic screw rod, four clamping holes are formed in the bottom end of the limiting tube, a plurality of limiting ropes are arranged on the elastic screw rod, and the middle portions of the limiting ropes are connected with a connecting rope.The in-situ prefabricated mold for the water-permeable concrete pile has a complete spiral contour of the water-permeable concrete pile, improves the bearing capacity of the pile body and the control ability of the soil layer deformation, reduces the number of piles by improving the quality of a single water-permeable concrete pile, thereby reducing the energy consumption of operation machinery and carbon emission.The pile forming method for the water-permeable concrete pile solves the problems of hole collapse and diameter reduction, and reduces the pile forming defect rate.

The invention belongs to the technical field of sponge city construction, and discloses a concrete pavement structure for sponge city construction and a construction method thereof.The concrete pavement structure comprises a bottom concrete layer, a middle concrete layer and a surface concrete layer which are sequentially arranged from bottom to top; the bottom concrete layer is formed by construction of recycled aggregate pervious concrete; the middle concrete layer is formed by constructing recycled aggregate pervious concrete doped with zeolite; the surface concrete layer is formed by constructing recycled aggregate pervious concrete which is reinforced by mixing polyvinyl alcohol fibers and basalt fibers; the gradient aperture layout of pores in the concrete pavement structure with small top and large bottom is realized, the mechanical property of the surface layer is effectively improved, meanwhile, the overall water permeability can be effectively ensured, and the water permeability and the mechanical strength are considered; meanwhile, the pore blocking speed can be slowed down, and the service life of the concrete pavement structure is prolonged.

The invention discloses early-strength carbon-sequestration recycled pervious concrete based on secondary carbonization and a preparation method thereof. The early-strength carbon-sequestration recycled pervious concrete is prepared from the following components in parts by mass: 120-150 parts of recycled aggregate, 30-40 parts of a cementing material, 18-20 parts of water, 0.2-1 part of cement single ore and 0.1-0.5 part of carbon nanotubes, the cementing material is synthesized by mixing ordinary Portland cement and sulphoaluminate cement according to the mass ratio of (2-3): 1; the recycled aggregate is crushed recycled concrete aggregate, and after the waste concrete aggregate is crushed, the crushed waste concrete aggregate is screened by using a square hole sieve with the aperture of 4.75-9.5 mm to obtain the recycled aggregate; the cement single ore is at least one of C3S, C2S and C3A. The pervious concrete is subjected to thorough drying treatment, then the Na2SO4 aqueous solution is sprayed on the surface of the pervious concrete, the pervious concrete is subjected to secondary carbonization after standing in the air, and the efficiency and uniformity of the carbonization reaction can be improved.

The present invention describes a multi-component inorganic 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, characterized in that at least a portion of the calcium aluminate cement contained in component A has an average particle size in the range of 0.5 to 15 [mu] m. Furthermore, the present invention relates to the use of a calcium aluminate cement having an average particle size in the range of 0.5 to 15 [mu] m in a multi-component inorganic anchoring system for increasing the load value, and to a method for chemically fastening anchoring members, preferably metal anchors and post-installed reinforcements, in a mineral matrix, the mineral matrix is such as a structure made of bricks, concrete, pervious concrete or natural stone.

The invention relates to the technical field of landscape engineering and hydraulic engineering, in particular to an ecological river-side cascade landscape belt system based on dynamic elevation adaptation and a construction method.The system comprises a fixing belt, a transition belt and a floating belt which are sequentially arranged in the direction from the river bank to the river center, and the floating belt comprises a plurality of ecological floating island units which are connected in a hinged mode; hygrophytes are planted on the surfaces of the ecological floating island units; the transition zone comprises a stepped slope protection structure, and a pervious concrete module is embedded in the stepped slope protection structure. And the lifting mechanism is arranged corresponding to the transition belt, the height of the lifting mechanism is adjustable, and the set height of the transition belt can be adjusted through the lifting mechanism. The river-side cascade landscape belt comprises the fixed belt, the transition belt and the floating belt, the height of the transition belt can be adjusted through the lifting mechanism, the transition belt can adapt to water level changes, and landscape function continuity under the 8m water level difference can be achieved.

The stirring machine comprises a supporting frame and a control box, the control box is fixed to the upper right portion of the supporting frame, a servo motor is fixed to the upper left portion of the supporting frame through a protection box, and the middle of the supporting frame is rotationally connected with a mounting frame through a connecting rod; the stirring device comprises a mounting frame, a stirring motor is fixed to the rear end of the middle of the mounting frame, a material mixing barrel is longitudinally fixed to the middle of the mounting frame, and a stirring assembly is arranged in the material mixing barrel. Meanwhile, the pervious concrete raw materials remaining on the inner wall of the mixing barrel and the outer walls of the stirring blades and the stirring rods can be cleaned, and use is more convenient.

The invention belongs to the technical field of concrete preparation, and particularly relates to pervious concrete and a manufacturing process thereof, and the manufacturing process comprises the following steps: step 1, adding water, a water reducing agent and a rubber emulsion into Portland cement, and uniformly mixing to obtain a material I; 2, superfine slag powder, limestone gravel and steel fibers are mixed, and a material II is obtained; step 3, adding a material I and a material II into the auxiliary device, and respectively weighing the material I and the material II with proper weight by utilizing the auxiliary device; 4, a container is connected to the lower side of the auxiliary device; 5, the auxiliary device is made to intermittently scatter the material I and the material II into the container; sixthly, the material I and the material II are evenly mixed through an auxiliary device, finished pervious concrete is formed, the auxiliary device comprises a fixing frame, two rotating rods are rotationally connected to the fixing frame, and a containing box is connected to each rotating rod.

The invention discloses a construction waste pervious concrete pavement brick and a preparation method thereof. The construction waste pervious concrete pavement brick is prepared from 90 to 120 parts of dead burned magnesium oxide, 23 to 44 parts of phosphate, 610 to 740 parts of construction waste, 45 to 90 parts of superfine slag powder, 0.2 to 0.8 part of polyamino polyether methylene phosphonic acid, 0.1 to 0.7 part of SAP (Styrene Acrylate Polymer) particles, 0.4 to 2.5 parts of polypropylene fiber and 25 to 55 parts of water. The demolding time of the construction waste permeable concrete pavement brick is shortened to 75 min or below, the 28d compressive strength can reach 45.2 MPa or above, the permeation coefficient reaches 1.2 or above, the freezing resistance is lower than 9.5%, and the pavement brick has excellent mechanical properties, water permeability and durability; and the pavement brick is high in content of construction waste aggregate, so that solid waste resource utilization is realized, and the environment is effectively protected.

The application belongs to the field of construction materials, and particularly discloses high-performance pervious concrete and a preparation method thereof.The aggregate in the high-performance pervious concrete is subjected to strengthening treatment, the concrete prepared from the aggregate has a 28d compressive strength of no less than 20.0MPa, even more than 30.0MPa, and a water permeability coefficient grade of no less than K2, meeting the relevant requirements of the pervious concrete, and being applicable to squares, road surfaces, parking lots and other places in application scenarios such as sponge cities, intelligent parks, low-carbon communities and ecological parks.

The invention relates to a pervious concrete MICP intelligent preparation and targeted reinforcement method, which comprises a big data intelligent decision-making platform, a mixing module is controlled to prepare concrete according to a mix proportion suggestion given by a digital twin system, concrete performance data is obtained through nondestructive testing, and the data is fed back to the big data intelligent decision-making platform in real time. The data is pushed to a digital twin system to establish a performance database of the microbial pervious concrete, the LMM mixed model assists the digital twin system to give an optimized microbial pervious concrete ratio, and the pervious concrete based on the MICP technology is prepared according to the optimized microbial pervious concrete ratio. When the mechanical property is obviously degraded, targeted reinforcement is carried out by utilizing microbial factors, and a reinforcement process capable of recovering the mechanical property of the pervious concrete under different environmental conditions is obtained. The MICP technology is used for fixing the microbial material to reinforce the pervious concrete, and the performance of the pervious concrete can be reinforced in a targeted mode through microorganisms in the later period.

The invention discloses an alkaloid exciting agent and a preparation method thereof as well as pervious concrete and a preparation method thereof, and relates to the technical field of preparation of concrete from solid wastes. The activity of the fly ash, the red mud and the like is excited by adopting alkaloid excitation, a certain promotion effect is achieved on consumption of a large amount of solid waste, and the concrete conforms to the green and environment-friendly development concept of the current concrete industry. Most of the used materials belong to solid waste, the cost is very low, the environmental protection advantage is obvious, meanwhile, the compressive strength of the product concrete can reach 15 MPa or above, the high permeable rate is achieved, meanwhile, very good bearing capacity is brought, and particularly, the added carborundum and the fiber reinforced material bring great benefits to improvement of the strength of the permeable concrete. And the system can be well applied to scenes such as parking lots and the like.

The application relates to a basement anti-seepage structure for building engineering, belonging to the technical field of basement waterproofing, which comprises a cushion layer, the upper surface of the cushion layer is rigidly cast with a concrete bottom plate, the upper side of the concrete bottom plate is provided with a water-permeable concrete layer, the upper surface of the water-permeable concrete layer is flexibly bonded with a decorative panel; an anti-seepage mechanism for preventing groundwater seepage is arranged between the concrete bottom plate and the water-permeable concrete layer, and an extraction mechanism is arranged on the decorative panel. The basement anti-seepage structure for building engineering is provided with the integrated anti-seepage mechanism between the concrete bottom plate and the water-permeable concrete layer, realizes integrated protection of resistance-conduction-drainage-monitoring, and forms a double rigid-flexible barrier together with a waterproofing membrane and a microcapsule self-repairing coating, so that the initial groundwater seepage is effectively inhibited; the drainage cushion is embedded with X / Y axial porous pipes, and is communicated with a plurality of water collecting cavities through a drip pipe, so that a grid partitioned flow guiding network is formed, and it is ensured that the seepage water is quickly captured and directionally collected.

The invention relates to the technical field of materials, in particular to photocatalytic pervious concrete as well as a preparation method and application thereof in runoff pollution abatement, and the photocatalytic pervious concrete is obtained by spraying a photocatalyst spray coating on the surface of pervious concrete; the pervious concrete is prepared from 392.5 to 456.5 kg / m < 3 > of cement, 1483.7 to 1570.1 kg / m < 3 > of aggregate, 19.63 to 22.83 kg / m < 3 > of a reinforcing agent and 96.6 to 138.0 kg / m < 3 > of water, the volume weight of the pervious concrete is 2100 kg / m < 3 >; the photocatalyst is obtained by modifying g-C3N4 with MnOx, and the concentration of the photocatalyst in the photocatalyst spray coating is 2-8 g / L; and the spraying amount of the photocatalyst spraying material is 0.2-0.8 L / m < 2 >. The photocatalytic material is combined with the pervious concrete, so that the degradation performance of the pervious concrete on liquid and gaseous pollutants is improved on the premise of ensuring the pervious characteristic and mechanical property of a matrix.