62 results about "Porous pavement" patented technology

A pavement material for the capture of waterborne constituents. The pavement material comprises a porous pavement substrate and an amphoteric compound bonded to the substrate. The porous pavement material may have a hydraulic conductivity ranging from about 0.001 to about 1.0 cm/sec and may act as a storm water storage basin.

The invention belongs to the technical field of porous pavements and particularly relates to a porous pavement partially taking steel slag as a coarse aggregate and taking rubber asphalt as an adhesive. In the porous pavement partially taking the steel slag as the coarse aggregate, the thickness of a structural layer of the porous pavement is between 2.0 and 4.0 centimeters; and the maximum nominal particle size of a construction mixture is 9.5 millimeters. The porous pavement consists of the coarse aggregate, a fine aggregate and a filler, wherein the coarse aggregate is the mixture of the steel slag coarse aggregate and a natural stone coarse aggregate; the fine aggregate is a limestone, diabase or basalt aggregate; and the filler is cement or the mixture of limestone mineral powder and slaked lime. The used rubber asphalt is produced from waste large tire rubber powder of which the particle size is more than or equal to 20 meshes and smaller than or equal to 40 meshes. Traffic and environmental problems caused by a nonporous pavement are solved to the greatest extent, the long-term pavement performance of an asphalt pavement is improved by using the steel slag and waste tires, the supply pressure of a high-quality aggregate is relieved and engineering cost is lowered.

The invention discloses a porous pavement for a sponge city, comprising a pavement body and draining ditches at both sides of the pavement body; the pavement body includes a permeable asphalt concrete layer, a permeable roadbed layer, a water-retained roadbed layer and a tamping roadbed layer which are arranged orderly from top to bottom; the permeable roadbed layer is formed by splicing several permeable roadbed prefabricating blocks, a joint is reserved between adjacent permeable roadbed prefabricating blocks; permeable grooves are arranged on the upper surface and the side wall of every permeable roadbed prefabricating block. The porous pavement for the sponge city can make much rain permeate in rainstorm comes, so ass to effectively prevent the urban inland inundation; for a light rain, much rain can return to an urban underground water circulation system; moreover, air humidity can be added when the weather is dry and hot, so as to adjust urban temperature and humidity; moreover, massive building waste recycled aggregates are applied; therefore, porous pavement is advantageous of economy and environment-friendly.

Systems and methods for a porous pavement system are described. The porous pavement system includes paver blocks designed to facilitate water seepage between the paver blocks and to permit water storage within the blocks. The paver blocks may be cabled together to create paving units that facilitate installation and maintenance of the pavement system. The porous pavement system provides improved management of stormwater, reducing runoff and facilitating infiltration of stormwater into the subgrade below the paving system.

The invention discloses an environment-friendly colored porous pavement structure applied to a slow-traffic system, relating to the field of coagulable pavement of field layout. The environment-friendly colored porous pavement structure sequentially comprises a surface permeable layer consisting of colored gravels and transparent cementing materials, a stable layer consisting of asphalt macadam or cement concrete, a gravel cushion layer and a soil matrix layer from top to bottom. According to the scheme, the environment-friendly colored porous pavement structure applied to the slow-traffic system is high in water permeability, attractive, and environmentally friendly in construction and has an attractive appearance.

The invention discloses a colored asphalt cementing material and a preparation method thereof. The cementing material comprises the following raw materials in percentage by weight: 10% to 40% of C5 petroleum resin, 10% to 40% of C9 petroleum resin, 30% to 70% rubber oil, 2% to 8% of ethylene-vinyl acetate copolymer, 2% to 8% of polyamide resin, and 2% to 8% of polyurethane. The preparation method comprises the following steps: heating the rubber oil with a mass percentage mentioned in the claim 1 to a temperature of 170 DEG C, then adding C5 petroleum resin, C9 petroleum resin, ethylene-vinyl acetate copolymer, polyamide resin, and polyurethane with the weight percentages mentioned in the claim 1 into the rubber oil, and stirring for 2 to 4 hours so as to obtain the colored asphalt cementing material. The cementing material has the advantages of strong high-temperature performance, good thermal stability, strong adhesiveness, good flexibility, strong water-damage resistant performance, and simple preparation method, and is especially suitable for being applied to southern areas under the situations of high-temperature, large traffic amount, or porous pavement.

A portable porous pavement system includes a plurality of porous pavement units and a plurality of clamping devices, in which each of the porous pavement units is connected to an adjacent porous pavement unit by at least one clamping device. Each clamping device includes a first bracket and a second bracket. The first bracket defines a slot arrangement. The second bracket is in intimate communication with the slot arrangement of the first bracket. The second bracket has a twisted arrangement to secure the second bracket and the first bracket together. Two adjacent walls of two adjacent porous pavement units are sandwiched between the first bracket and the second bracket to secure the two adjacent porous pavement units together. A method for assembling a portable porous pavement system includes providing first and second porous pavement units; mounting a C-shaped clamp member over two adjacent walls of the first and second porous pavement unit; orienting the first and second porous pavement units with the C-shaped clamp member on a surface; providing a locking bracket having a U-shaped section extending between first and second slotted wings; mounting the locking bracket over the C-shaped clamp member by orienting the U-shaped section over the two adjacent walls, with the first arm going through the first slotted wing and the second arm going through the second slotted wing; and twisting the first arm and the second arm to secure the locking bracket and the C-shaped clamp member around the first and second porous pavement units.

The invention discloses simulated rainfall pattern macro-porous pavement water drainage capacity testing equipment and a testing method. The simulated rainfall pattern macro-porous pavement water drainage capacity testing equipment comprises simulated rainfall system equipment, a test bed, a test bed supporting frame, a test piece clamp, a scale plate for measuring the rainfall height, and a drained water collecting device. The problems of actual water drainage capacity test of macro-porous water drainage asphalt pavements can be solved by quantitatively simulating different rainfall patterns, pavement cross slopes, the rainfall height and the vertical and lateral flow of water on the asphalt pavements. By adopting the testing equipment disclosed by the invention, the defects that no tilt angles can be provided, the time of test processes is limited, different rainfall patterns cannot be simulated, and the rainfall flow velocity and rainfall pressure intensity cannot be controlled when water permeability coefficients of an asphalt mixture test piece are tested by using existing testing regulations can be overcome, and the real lateral water drainage capacity and vertical water drainage capacity of the macro-porous water drainage asphalt pavements under different rainfall patterns can be fully and effectively simulated.

An asphalt binder is provided, comprising 85 to 97.5 parts by weight of a bitumen and 16 to 2.5 parts by weigh of a polymer composition, wherein the polymer composition comprises:

(i) from 2 to 8, preferably from 3 to 6 parts by weight of a styrenic block copolymer having at least two blocks of monovinylaromatic hydrocarbon (A) and at least one block of a conjugated diene (B), wherein the block copolymer composition has a vinyl content of at least 25% by weight, preferably from 25 to 40% by weight, based on the total diene content;

(ii) from 0 to 5, preferably from 1 to 3 parts by weight of a styrenic diblock copolymer having one block of monovinylaromatic hydrocarbon (A) and one block of a conjugated diene (B); and

(iii) from 0.5 to 3, preferably from 1 to 2.5 parts by weight of an ethylene-vinyl acetate copolymer,

wherein the weight ratio of (i)+(ii):(iii) is from 2:1 to 6:1, preferably from 3:1 to 4:1. In addition, an asphalt mix is provided comprising 2 to 8 parts by weight of the asphalt binder of the present invention and 98 to 92 parts by weight of gap-graded aggregate or open-graded aggregate material.

Furthermore, a porous pavement is claimed, produced from the open or gap-graded mixes, by compacting the asphalt mix mentioned above.

The invention relates to a lakeside pollutant-interception greenbelt building method. The lakeside pollutant-interception greenbelt building method includes optimally optimizing four pollutant-interception units including a shallow gravel trench, a porous pavement, a low-elevation greenbelt and an emergent aquatic plant collocation area, wherein interception control of the shallow gravel trench for runoff pollutants, infiltration buffer of the porous pavement, storage and purification of the low-elevation greenbelt and landscape greening function of the aquatic plant collocation area are given into full play. Compared with the prior art, the lakeside pollutant-interception greenbelt building method realizes effective control on lake-entry runoff pollutants by the aid of filtering, sedimentation and biodegradation, runoff flood peak is reduced by more than 30%, pollutants are removed by more than 30%, pollution load of surface water body such as lakes is reduced, and integrity of water quality and ecological system of lakes is effectively protected.

The invention relates to a colorful self-leveling porous sidewalk surface material and a preparation method thereof, and belongs to the field of asphalt pavement materials. The colorful self-leveling porous sidewalk surface material comprises a cementing agent and aggregate. The colorful self-leveling porous sidewalk surface material is characterized in that the cementing agent consists of the following components in percentage by mass: 25-50% of epoxy resin, 2-5% of a diluent, 30-50% of a curing agent and 15-40% of a reinforcing admixture; the aggregate is single-grading limestone or gravel. Compared with the prior art, the colorful self-leveling porous sidewalk surface material has the beneficial effects: as the mixed material is prepared from single-grading aggregate, the amount of the cementing agent can be greatly reduced, and thus the manufacturing cost can be lowered. In addition, the colorful self-leveling porous sidewalk surface material has the property of large interspaces, can be used on a sidewalk pavement when being combined with a water-storage type substrate, rainfall storage can be achieved, and the urban heat island effect can be alleviated. The colorful self-leveling porous sidewalk surface material provided by the invention is good in high-temperature stability, good in low-temperature anti-cracking property, good in caking property, economic and environment-friendly, simple and easy to prepare, good in weather resistance and good in water permeation and storage.

The invention discloses a paving method of a porous pavement. The paving method of the porous pavement comprises the steps of paving a permeable layer (1) on a road surface which needs to pave, firstly arranging multiple first module frames (3), pouring a permeable material into the first module frames (3) and leveling the permeable material so as to form water permeable bricks (5), demolishing the first module frames (3), and filling gaps formed among the water permeable bricks (5). The construction can be carried out better and rapidly through setting the module frames and a site pouring construction method, the operating efficiency is high, the cost is low, and the smoothness of the road surface can be simply and conveniently guaranteed, so that the road surface with high strength is formed.

The invention discloses a road carriageway porous pavement structure and a pavement method thereof. The structure comprises a water sealing layer arranged on a soil foundation, a base layer and a surface layer; a reinforcing layer is arranged between the water sealing layer and the soil foundation; the water sealing layer comprises a porous structure formed by interweaving and accumulating rock fibers, and second waterproof layers filled in gaps of the porous structure; the base layer comprises a lower base layer, a middle base layer and an upper base layer arranged in sequence from bottom totop; the lower base layer and the upper base layer comprise first rubbles mutually accumulated; the middle base layer comprises an earthwork standard room, and second rubbles filled in gaps of the earthwork standard room; the surface layer comprises a lower surface layer and an upper surface layer arranged in sequence from bottom to top; the lower surface layer comprises first gravels mutually accumulated, and third waterproof layers filled in gaps of the first gravels; the upper surface layer comprises second gravels mutually accumulated, and fourth waterproof layers filled in gaps of the second gravels; and the average particle size of the first gravels is larger than the average particle size of the second gravels.

The invention discloses an anti-stripping test device for surface aggregates of porous asphalt pavements or porous concrete pavements. The test device comprises a supporting machine frame, a test piece assembling area, a wheel simulation mechanism, a loading mechanism, a wheel steering control mechanism, a reciprocal motion control mechanism, a temperature control machine, an observation window and a visual control platform. The device can well simulate the surface aggregate anti-stripping conditions of the porous pavements under conditions of different pavement temperatures, loads and vehicle running states and can obtain the main factors influencing the anti-stripping capacity of the surface aggregates of the porous pavements by combining raw material test analysis, thereby providing a basis for the selection of raw materials and design of mixture composition in a pavement design process.

The invention relates to the technical field of civil engineering materials testing, in particular to a multifunctional linkage device integrating sewage time-sharing sampling and permeation coefficient testing and a working method of the multifunctional linkage device. The device mainly comprises two parts, wherein a first part is a device A and mainly comprises a power supply channel, a cylindrical overflow port, a water cylinder, an overflow water tank, a water tank overflow port, a test sample bracket, a test sample, a dial gauge, a sewage sampling pipe, a high-precision flow gauge, an electronic thermometer, a working table I and the like; a second part is a device B and mainly comprises a working water bucket, a water draining bucket, a propeller, a water pump, a power switch, a water pump electronic control assembly, a propeller electronic control assembly, a guide rod rotation driver, a working table II and the like; the device A and the device B are connected through one water supply guide pipe and two water draining guide pipes, and accordingly, the multifunctional linkage device is formed. Therefore, the condition of sewage permeation of a porous pavement in a real environment can be simulated, samples of sewage filtered by the test sample are obtained at different moments, the permeation coefficient of the test sample is tested simultaneously, the water resource is recycled, and the operation is simple.

A porous pavement system and a method of maintaining the porous pavement system are disclosed. A combination of porous and non-porous pavers are laid out to create a porous pavement. A receptacle or retainer for receiving a tool is in incorporated into the porous pavers, to facilitate lifting the pavers by means of the tool. A cradle may be used to hold multiple pavers.

A clamping device for a portable porous pavement system includes a first bracket and a second bracket. The first bracket includes a U-shaped section extending between first and second wings; a first slot defined by the first wing; and a second slot defined by the second wing. The second bracket includes a C-shaped member having first and second arms with a base member joining the first and second arms; a first twistable section defined by the first arm; and a second twistable section defined by the second arm. The first arm is sized to fit through the first slot of the first wing such that the first twistable section and the base member are on opposite sides of the first wing; and the second arm is sized to fit through the second slot of the second wing such that the second twistable section and the base member being on opposite sides of the second wing.

An asphalt mixture for a color porous pavement upper layer and a preparation method are disclosed. The asphalt mixture comprises following raw materials: decolorized asphalt, aggregate having a size of 3-5 mm, aggregate having a size of 5-10 mm, composite modified mineral powder, particle lignin fibers and iron oxide red. The asphalt mixture is prepared mainly by dispersing the particle lignin fibers in a manner of blending all the small-particle-size aggregate (3-5 mm) and a part of the large-particle-size aggregate (5-10 mm), and mixing the composite modified mineral powder with raw materials. The asphalt mixture has functions integrating water permeability and beauty, and is proved by related performance index tests to have good pavement performance and durability. The asphalt mixture is of great significance to construction of a sponge city water-permeable system, and the construction goal of benign hydrological cycles and ecological energy conservation.

The invention relates to a paving material and an environment-friendly easy-drainage porous pavement structure prepared through the paving material. The paving material is prepared from 1,300-1,500 kg of a component A, 300-450 kg of a component B and a component C, and the ratio of the component C to the component B is 0.28-0.32. The component A is prepared from, by mass, 4-6 parts of building stone, 3-5 parts of waste concrete particles and 1-2 parts of rubber particles. The component B is prepared from, by mass, 8.5 parts of cement, 0.5 part of basalt fibers and 1 part of coal ash. The component C is prepared from, by mass, 2.92-2.96 parts of water and 0.04-0.08 part of a water reducing agent. Compared with the prior art, the pavement structure prepared through the paving material has the beneficial effects of being good in drainage, resistant to freeze thawing and good in durability; and due to a waterproof layer, a concrete layer and a cement stabilized macadam layer can be prevented from being infringed by the natural environment and chemical objects, and the pavement durability is improved.

The present disclosure provides asphalt modified red mud for porous pavement material and an application thereof. The porous asphalt pavement material includes asphalt, red mud and aggregate; the mass ratio of asphalt to red mud is 1:(0.10-0.15), the mass ratio of the total mass of asphalt and red mud to aggregate is (0.08-0.12):1. With regard to the asphalt modified with red mud for porous pavement material provided in the present disclosure, asphalt is modified with red mud, and aggregate is added to synergize with red mud so as to improve the purification properties and mechanical properties of the porous asphalt pavement material efficiently. In the embodiments of the present disclosure, the purification rate of suspended matter by the asphalt modified with red mud for porous pavement material reaches 54.9-58.6%, and the purification rate of heavy metals (iron and lead) reaches 34.3-46.1%.

The invention disclose the process for manufacturing modified asphalt for porous pavement which comprises, heating the medium temperature coal-tar asphalt till melting, charging into dissolvent deasphalting apparatus along with toluene, mixing the obtained asphalt of detoluene non-dissolvent with SBS polymeric compound directly, mixing the mother liquid with oil petroleum to obtain high adhesiveness modified asphalt for use in porous pavement and high grade express highway.