384 results about "Asphalt concrete" patented technology

The invention discloses a road carbon emission evaluation method and system, and relates to the technical field of carbon emission evaluation, and the method comprises the following steps: S1, collecting the traffic flow data and environment data of a target road section in real time through a roadside sensing array; s2, constructing a road body carbon emission calculation model; s3, establishing a maintenance activity carbon emission compensation model; s4, constructing a driving behavior carbon emission correction model; s5, establishing a climate accumulation effect correlation model; and S6, generating a dynamic emission coefficient matrix, and establishing a carbon emission coefficient dynamic correction mechanism of different generations of vehicles. According to the method, the road body carbon emission calculation model is constructed, the unit mileage road maintenance carbon emission factor is dynamically generated, oxygenolysis carbon emission of the asphalt concrete material is considered, the influence of the road surface flatness on the vehicle rolling resistance is also taken into account, and therefore comprehensive and accurate accounting of the road carbon emission is achieved, and the calculation efficiency is improved. And the accuracy of the evaluation result is obviously improved.

The invention provides low-temperature-resistant high-modulus rubber asphalt and a preparation method thereof, and relates to the technical field of rubber asphalt, and preparation raw materials of the low-temperature-resistant high-modulus rubber asphalt comprise the following components: matrix asphalt, rubber powder, a desulfurizer, a free radical type thermal initiation crosslinking agent, a reinforcing agent, a coupling agent, a flexibilizer, a viscosity reducer and an auxiliary agent. According to the low-temperature-resistant high-modulus rubber asphalt provided by the invention, the ductility at 5 DEG C is greater than 30cm, the maximum breaking flexural-tensile strain of a mixture at-10 DEG C is greater than 4000 mu epsilon, the dynamic modulus of the mixture at 15 DEG C is greater than 15000MPa, and the high-temperature performance and modulus of high-modulus asphalt concrete are not reduced while the crack resistance of the high-modulus asphalt concrete is helped to be improved. When being applied to pavement middle layer pavement, the pavement anti-cracking agent can improve the anti-cracking performance of the whole pavement structure, reduce the pavement maintenance cost and improve the driving safety.

The utility model relates to the technical field of expansion joints, in particular to a deformed steel-elastic body combined seamless expansion joint structure and a bridge, the expansion joint structure increases the coupling action area and the coupling force of an elastic body and deformed steel through the combined structural design of a deformed plate, the deformed steel, the elastic body and a covering layer, so that the expansion joint structure is more flexible and reliable. The phenomenon that weak connecting surfaces are easy to debond too early is improved, the service life of the structure is prolonged, and the durability of the structure is improved; the deformation direction of the elastic body is controllable, the road surface is prevented from bulging, and the driving safety problems such as bumping are completely eradicated; the covering layer in the expansion joint area can cooperate with the elastic material for tension and compression deformation, meanwhile, it is guaranteed that the rigidity transition from the asphalt concrete layer in the non-expansion area to the covering layer is smooth, and the vicious circle that the bumping phenomenon is caused by the unsmooth road surface, and the local damage of the road surface is more serious due to the impact load under the bumping phenomenon is prevented.

The invention relates to the technical field of asphalt concrete production, in particular to an asphalt mixing plant monitoring system and method. The method comprises the following steps: acquiring real-time production operation data of the asphalt mixing plant, and constructing a real-time production state vector; acquiring production process data of all superior product batches in history as a training data set; performing clustering processing on the training data set to obtain a qualified mode set; when the real-time production state vector does not belong to any qualified production mode cluster, calculating a mode deviation degree, and further calculating a comprehensive risk level; performing grading early warning based on a size relationship between the comprehensive risk grade and a preset risk threshold value, and monitoring the asphalt mixing plant; and the monitoring accuracy of the asphalt stirring process is improved.

The invention relates to the technical field of asphalt concrete production, in particular to a bag-type dust remover for stone dust recycling, which comprises a dust removal bin, a pattern plate is fixedly mounted on the upper side in the dust removal bin, a plurality of mounting holes are formed in the pattern plate, dust removal bags and a bag cage are mounted in the mounting holes, and an air outlet cylinder is rotatably mounted in the bag cage. A plurality of expansion units which are uniformly arranged up and down are mounted on the outer side of the air outlet cylinder, expansion rings are mounted on the expansion units, and the expansion rings are fixedly connected with the cloth bag cage; through radial expansion and retraction of the expansion ring, a hardened layer on the surface of the filter bag can be effectively broken, meanwhile, the subsequent pulse back-blowing dust removal effect is improved, and the dust recovery efficiency is ensured; when the dust collection bag is locally damaged, the dust collection bag can prevent dust-containing air flow from flowing out through the air outlet cylinder, so that the dust collection bag can still maintain a normal filtering function in other areas except the damaged position, thereby reducing environmental pollution and ensuring the dust collection efficiency.

The invention relates to the field of overlay materials, in particular to a two-component overlay material suitable for a modified asphalt concrete pavement and a preparation method of the two-component overlay material. The two-component overlay material suitable for the modified asphalt concrete pavement comprises the following raw materials: a component A: a polymer emulsion, a composite additive, a silane coupling agent, a film-forming agent, an ultraviolet absorbent, a stabilizer and the like; the component B is a polyisocyanate curing agent. The finally prepared two-component overlay material can simultaneously give consideration to comprehensive properties such as adhesion, hydrolysis resistance, weather resistance and saline-alkaline resistance, the phenomenon that other properties are greatly sacrificed for a certain prominent property is avoided, and the overlay material can be ensured to be popularized and applied in various environments and harsh working conditions; the technical level of modified asphalt concrete pavement maintenance is greatly improved, and the application effect is excellent.

The invention belongs to the technical field of crushing equipment, and particularly provides a concrete crushing and screening device and a recycled asphalt concrete production process. The concrete crushing and screening device comprises a multi-stage vibrating screen, a first-stage crusher and a second-stage crusher, and the multi-stage vibrating screen can screen concrete materials into at least three types according to the particle size in advance. In the working process, powder materials which do not need to be crushed repeatedly are directly discharged through the corresponding discharging ports and do not enter the first-stage crusher and the second-stage crusher any more, energy consumption is reduced, and excessive crushing is avoided. Coarse aggregate with large particle size firstly enters the primary crusher through the corresponding discharge port, and then enters the secondary crusher through the discharge channel for secondary crushing. The graded crushing design ensures that the coarse aggregate is fully crushed, the mixing of substandard aggregate or powder materials in a final product is reduced, and the grading uniformity of the recycled aggregate and the quality stability of the product are improved.

The application provides an anti-water freezing type gelling stable phosphogypsum asphalt concrete and a preparation method thereof, and comprises the following steps: 1, obtaining phosphogypsum powder by treating recycled waste phosphogypsum; 2, preparing PU / cement composite modified asphalt; 3, quantitatively taking PU / cement composite modified asphalt, natural aggregate and the phosphogypsum powder obtained in the step 1) (instead of mineral powder); 4, according to the designed mixing ratio, mixing the PU / cement composite modified asphalt, aggregate and phosphogypsum filler to prepare the anti-water / anti-freezing type phosphogypsum asphalt concrete. The composite modification of PU and cement can enhance the adhesion of asphalt to the natural aggregate and the phosphogypsum, significantly improve the water resistance and freezing resistance of the anti-water / anti-freezing type phosphogypsum asphalt concrete, greatly solve the problem that the potential practical engineering application of the phosphogypsum filler is limited due to the poor water stability, relieve the environmental pollution problem, and the production process is simple and easy to operate.

The invention discloses an asphalt concrete permeability detection device, and relates to the technical field of concrete detection equipment. The device comprises a measuring cylinder, and a pressurizing assembly is arranged in the measuring cylinder. A threaded rod is driven to rotate by rotating a first rotary knob, so that an adjusting block moves vertically and downwards, a fixing plate and a sealing gasket are driven to move vertically and downwards through a limiting rod and a connecting rod, when the sealing gasket moves to the position below a liquid inlet pipe, the interior of the measuring cylinder is in a closed state, and the sealing gasket continues to move downwards; the pressure in the measuring cylinder is gradually increased, the pressure at the moment is judged through the pressure gauge, when the pressure reaches the standard atmospheric pressure, follow-up detection can be carried out, by arranging the assembly, the problem that the detection result is influenced by the low-pressure environment when the road surface in the high-altitude area is detected is effectively solved, the effect of reducing errors can be achieved, and meanwhile the detection accuracy is improved. The accuracy of a detection result is improved, and evaporation of detection liquid in a low-pressure environment is avoided.

The invention discloses an anti-cracking phosphoric acid-based geopolymer, an anti-cracking recycled aggregate as well as a preparation method and application of the anti-cracking phosphoric acid-based geopolymer and the anti-cracking recycled aggregate. The method comprises the following steps: by taking a phosphoric acid solution with the mass concentration of 50-60% as a phosphoric acid excitation solution, firstly, adding metakaolin into the phosphoric acid excitation solution, and mixing, so that the aluminum-silicon structure of the metakaolin is fully deconstructed by phosphoric acid; the preparation method comprises the following steps: adding the phosphoric acid into a reaction system, adding fly ash, mixing to enable the phosphorus-aluminum ratio in the reaction system to be 1.2-1.4, magnetically stirring at 70-80 DEG C until the slurry is changed from red brown to gray, and generating an inorganic polymer network mainly comprising P-O-Al and P-O-Si bonds, namely the anti-cracking phosphoric acid-based geopolymer slurry. The modified recycled aggregate prepared by adopting the phosphoric acid-based geopolymer slurry in combination with three-stage maintenance not only has improved cracking resistance, but also has better mechanical properties. The performance of the prepared modified recycled aggregate is close to that of natural aggregate, and the modified recycled aggregate can be applied to asphalt concrete or asphalt pavements.

The invention discloses asphalt concrete recycled material recycling equipment, which belongs to the technical field of asphalt concrete milling material processing and comprises feeding equipment, heating equipment and metering and stirring equipment. The heating equipment comprises a recycled material regeneration heating roller, a combustor and a low-temperature hearth, the feeding equipment is located at the input end of the recycled material regeneration heating roller, and the output end of the recycled material regeneration heating roller is communicated with the combustor through the low-temperature hearth. The feeding direction of the reclaimed material is opposite to the flame direction of the combustor, and the combustor and the reclaimed material regeneration heating roller are transited through the low-temperature hearth, so that direct contact between the reclaimed material and high-temperature flame is avoided. Low-temperature airflow is conveyed to the inner barrel through the backflow cavity, so that the outlet temperature of the low-temperature hearth is kept in a low-temperature state of about 600 DEG C. The recycled material is gradually heated in the recycled material regeneration heating roller, so that the recycled material and asphalt are prevented from being overheated and aged, the heating efficiency is higher, and the heat utilization is more sufficient.

The utility model provides gravel drying equipment with a dust removal function for asphalt concrete production, and relates to the technical field of concrete production, the gravel drying equipment comprises a drying cylinder, a feed port and a discharge pipe, the feed port and the discharge pipe are positioned on two sides of the drying cylinder, a heat supply cylinder is arranged on one side of the feed port, and a dust collection box is arranged on one side of the drying cylinder; a second dust suction hood and a first dust suction hood are respectively arranged at the tops of the feeding hole and the discharging pipe; a dust suction pump is arranged at the top of the dust collection box; suction force is generated in the second dust suction cover and the first dust suction cover by starting the dust suction pump, so that dust generated at the inlet and outlet position of the drying cylinder is sucked and input to one side of the guide hopper in the inner cavity of the dust collection box, the dust generated in the drying process is prevented from being diffused through the positions of the feeding port and the discharging port, and the dust removal quality is improved; and dust in the gas is collected through a dust collection bag in the input dust collection box, so that centralized treatment of the dust is facilitated, and the use effect is improved.

The invention relates to the technical field of road engineering, in particular to a reinforced concrete stiffening dense rib pile supporting post-tensioning method prestressed road and a construction method. According to the overall technical scheme, dense rib pile multilateral wing beam pile head integrated design is adopted, pile sinking is conducted through a steel casing guide soil squeezing static pressure method, longitudinal and transverse crossed flat and hidden beams cooperatively bear, butt joint steel bars are connected through a full grouting sleeve grouting method, post-tensioning method unbonded prestressed tendon perforation laying is conducted, and double-I-beam pedestal bearing prestress applying and anchoring are conducted; according to the principle of reinforcing the bearing effect of road structure group piles through reinforcing meshes, the rapid mounting and dismounting process of aluminum molds and comprehensive pavement of asphalt concrete surface layers, the bearing capacity of the road structure is improved, the stability and durability are enhanced, meanwhile, the construction efficiency is optimized, and the follow-up maintenance cost is reduced.

The utility model relates to the technical field of asphalt concrete, and discloses a stirring device for asphalt concrete processing, which comprises a stirring tank, the top of the stirring tank is fixedly connected with a feed hopper, the top of the feed hopper is movably provided with a sealing plate, and the inner wall of the feed hopper is fixedly connected with an electric heating layer. A filter pipe is fixedly connected to the interior of the sealing plate, and a stirring rod is rotationally connected to the inner wall of the stirring tank. The asphalt stirring device has the following advantages and effects that blockage during discharging is prevented, asphalt is preheated, after the asphalt and other materials enter the stirring tank, the sealing plate is covered, the stirring rod rotates immediately, the stirring blades are driven to stir, the heating pipe is used for heating, the temperature of the stirring blades is increased, intermediate heating of the asphalt can be promoted, and the asphalt stirring effect is improved. The heat conduction plate is beneficial to heat conduction, asphalt is high in speed and uniform in heating, the stirring efficiency is improved, waste gas generated by heating is filtered and discharged from the filter pipe, and the practicability of the feeding hopper is improved.

The present application relates to a kind of rural road pavement widening construction methods in rainy area, including the following steps, the material component, density and moisture content of widening section subgrade should be same with the material component, density and moisture content of old roadbed same level layer, the side middle part of old road cement concrete layer is drilled and planted with reinforcement with interval distance, adjacent planted reinforcement interval is 40-50cm, then a layer of SBS anti-cracking paste is uniformly arranged along joint;1-1.5cm thick rubber stress absorbing layer is spread on the upper end surface of new and old road cement concrete layer;With new asphalt, regenerating agent material, graded RAP material, aggregate and mineral powder are mixed in hot state, then asphalt concrete surface layer is paved on the upper end of rubber stress absorbing layer, and the thickness is 5-8cm.The present application prevents water damage caused by rain, delays damage at joint, reduces the probability of crack occurrence, and improves the service performance and durability of pavement.

The invention discloses a UHPC (Ultra High Performance Concrete) composite structure for repairing bridge deck pavement diseases and a construction method, and aims to solve the technical problems of poor durability, insufficient bearing capacity and the like generally existing after the existing bridge deck pavement pit slot diseases are repaired. The method comprises the core technical links of bridge deck pavement milling, drilling and steel bar planting, steel bar mesh installation, UHPC mixing, pouring, maintenance and the like. By adopting a composite structure composed of the UHPC120 concrete and the asphalt concrete surface layer and matching with the reinforced connection design of the HRB400-grade twisted steel mesh and the implanted erection steel bars, the bonding strength between the repairing layer and the original bridge deck concrete pavement layer is effectively improved, the structural integrity and the anti-cracking performance are enhanced, and the service life of a bridge is remarkably prolonged. The technology is suitable for repairing bridge floor cavities, pit slots and other diseases of various types of bridges, and has wide engineering application prospects.

The utility model belongs to the technical field of asphalt concrete mixing, and discloses an asphalt concrete mixing mechanism which comprises a fixing frame, a supporting plate is fixedly installed on the front side of the fixing frame, a limiting box is fixedly installed on the front side of the fixing frame, and two sliding plates are installed on the inner side of the limiting box in a sliding mode. An asphalt concrete mixing kettle is fixedly mounted on one side of the sliding plate, a sealing splicing block is fixedly mounted on one side of the asphalt concrete mixing kettle, a sealing splicing groove is formed in one side of the asphalt concrete mixing kettle on the other side, and a discharging pipeline is fixedly mounted at the bottom of the asphalt concrete mixing kettle on the right side. The first motor can be controlled to drive the two-way lead screw to rotate, the two-way lead screw can drive the sliding plates on the two sides and the asphalt concrete mixing kettle to slide through thread fit after rotating, the asphalt concrete mixing kettle can be separated after sliding, and therefore workers can conveniently clean the inner wall of the asphalt concrete mixing kettle.

The utility model discloses an asphalt concrete mixing arm device which comprises a mixing shaft, a first mounting seat and a second mounting seat, a connecting part is arranged between the first mounting seat and the second mounting seat, and distance adjusting parts are arranged on one side of the first mounting seat and one side of the second mounting seat. The connecting part comprises a first notch formed in one side in the first mounting seat, a second notch formed in one side in the second mounting seat, a through hole formed in one side in the first notch and a push rod arranged in the through hole. The problems that when an existing stirring arm is used, although the stirring arm and a stirring shaft can be fixed, the stirring arm and the stirring shaft are fixed through bolts, time and labor are relatively wasted during mounting and dismounting, the mounting efficiency is reduced, and meanwhile the length of an arm rod is fixed, so that the practicability becomes poor are solved.

This utility model relates to the technical field of screening devices and discloses an asphalt concrete aggregate screening device, including a mounting frame and a multi-stage screen. The mounting frame has an integrally formed material hopper at its bottom. This utility model uses a servo motor and a first synchronous belt at the output end to drive the corresponding reciprocating screws. The ends of multiple sets of reciprocating screws are synchronously driven by a second synchronous belt, enabling the multiple sets of reciprocating screws to rotate synchronously. This allows the slide plate to slide back and forth along the guide groove. When the slide plate slides back and forth, the brush on the bottom surface of the slide plate can form elastic contact with the vibrating multi-stage screen surface under the transmission of the compression spring. In this way, when the brush moves left and right while making contact, it can promptly clean the blockage in the mesh holes of the corresponding multi-stage screen, thereby realizing the synchronous cleaning of the concrete aggregate blocked on the equally spaced multi-stage screen, avoiding severe blockage of the multi-stage screen and obstruction of aggregate screening.

The asphalt concrete storage tank comprises a storage tank body, supporting legs are fixedly connected to the left side and the right side of the bottom of the storage tank body, a connecting sleeve is fixedly connected to the upper surface of the storage tank body, a fixing cover is installed on the outer surface of the connecting sleeve, and a stirring and cleaning mechanism is installed on the upper surface of the fixing cover; the discharging pipe is inserted into the bottom of the storage tank, a valve is installed on one side of the upper end of the discharging pipe, a rotary cleaning mechanism is installed at the upper end of an inner cavity of the discharging pipe, a mounting frame is installed at the rear end of the discharging pipe, and a discharging mechanism is installed at the bottom of the inner cavity of the discharging pipe. The arc-shaped plate on the rotating rod rotates to clean materials in the discharging pipe, blockage of the materials in the discharging pipe is avoided, the materials in the discharging pipe are conveniently driven to be evenly discharged through the discharging mechanism, and blockage of the bottom of the discharging pipe is avoided.

This invention discloses an intelligent control system for a feeding device in asphalt concrete production, relating to the field of asphalt concrete production technology. The system includes a multimodal sensing device, an intelligent decision-making device, and a collaborative execution device. The multimodal sensing device collects acoustic, thermal, and electrical multi-source information during the feeding process. The intelligent decision-making device processes this information using a multimodal information fusion model, calculates an overflow risk index, and triggers an early warning. The collaborative execution device, based on a model predictive control algorithm, dynamically adjusts the operating parameters of the cold aggregate silo feeder, belt scale, and hot aggregate elevator to achieve global collaborative forward-looking control of the feeding system. This invention achieves proactive early warning and effective suppression of overflow risk, reduces raw material waste and equipment downtime, ensures the stability of the feeding process, and improves the quality of the finished asphalt concrete product.

This utility model discloses a compaction device for asphalt concrete panel construction in pumped storage power stations, belonging to the field of pumped storage power station construction technology. It includes a roller body with a mounting frame at its forward end. A compaction roller is rotatably mounted within the mounting frame. Connecting rods are fixed to the outer walls on both sides of the forward end of the mounting frame. An extension plate is welded between the ends of the two connecting rods furthest from the mounting frame, located in front of the compaction roller. A pre-cleaning assembly is located on the bottom surface of the extension plate. This assembly includes cleaning components symmetrically arranged on the bottom surface of the extension plate for sweeping dust particles forward and backward. A solid impurity removal component, located in the middle of the cleaning components and on the bottom surface of the extension plate, is used to remove protruding particles and stones from the asphalt concrete panel of the pumped storage power station. This utility model can effectively remove impurities of various shapes, significantly improving the cleanliness of the base surface and providing a good foundation for subsequent compaction.

This invention belongs to the field of road engineering materials, specifically relating to a radar-identifiable multifunctional asphalt pavement interlayer bonding emulsified asphalt and its preparation method. This invention utilizes asphalt, dielectric tracer-functional mother liquor, soap solution, and nano-reinforcing agents to form a continuous thin layer with an ultra-high dielectric constant between the layers. This not only creates a significant difference in electromagnetic properties between the upper and lower asphalt concrete layers, providing a strong and stable reflection interface for ground-penetrating radar, enabling non-contact, high-precision, and full-coverage layer thickness detection and layer location identification; it also does not damage but enhances the interlayer bonding performance, shear strength, and durability. Furthermore, the radar-identifiable multifunctional asphalt pavement interlayer bonding emulsified asphalt material provided by this invention is stable and fully compatible with existing construction processes (spreader trucks), requiring no changes to equipment or procedures.

The utility model provides a multifunctional concrete material frying machine for road maintenance, which is characterized by comprising a moving structure, a cleaning structure, a stir-frying structure and a material storage structure, the cleaning structure and the stir-frying structure are arranged on the side surface of the moving structure, the moving structure is connected with the cleaning structure and the stir-frying structure in a welding manner, and the material storage structure is connected with the cleaning structure and the stir-frying structure. A cleaning structure is additionally arranged, the cleaning structure is composed of a cleaning box, a draught fan, a connecting rod, a motor A and a sweeping brush, dust can be rapidly blown away in a large area through the draught fan and is more efficient compared with manual sweeping, the sweeping brush can remove residual broken stones in a targeted mode, the cleaning structure and the sweeping brush supplement each other, and therefore the cleaning structure is more efficient and more convenient to use. The road surface cleaning efficiency and quality are improved, good conditions are created for follow-up asphalt concrete laying, the construction progress and quality of asphalt concrete curing engineering can be guaranteed, and the problems of reworking and the like caused by incomplete road surface cleaning are solved.

The utility model discloses a novel hot aggregate elevator, which belongs to the technical field of elevators and comprises a base, a lifting platform is arranged at the top end of the base, a top plate and a bottom plate are fixed through two vertical columns, a first screw is connected to the top end of the top plate through a first motor, a storage groove is formed in the top end of the lifting platform, and a moving block is fixed to the side face of the lifting platform. A material receiving box is arranged at the top end of the bottom plate and connected with a material screening box through a plurality of springs, fixed plates are fixed to the two sides of the bottom plate, a plurality of screening holes are formed in the bottom face in the material screening box, movable plates are fixed to the two sides of the material screening box, first air cylinders are installed on the two fixed plates, and a straight notch is formed in the top end of the bottom plate; a groove is formed in the top end of the base, a second screw is connected to the side face through a second motor, a limiting block is connected to the side face of the second screw, a movable block is fixed to the top end of the limiting block through a sliding rod, and a push block is connected to one side of the movable block through a second air cylinder. By means of the elevator, caked or large-size asphalt concrete can be screened out, the solidification effect of the asphalt concrete is prevented from being affected, and the engineering quality of the asphalt concrete is guaranteed.

The application relates to the field of high-performance asphalt concrete, and particularly discloses a cast-in-place layer asphalt concrete for a through bridge, which is prepared from the following raw materials in parts by weight: 28-32 parts of mixed asphalt, 185-198 parts of aggregate, 18-19 parts of mineral powder, 7.5-9.3 parts of a high-molecular polymer, and 3-3.6 parts of a toughness modifier. The toughness modifier comprises elastic composite fibers and polyurethane micro powder, and the weight ratio of the elastic composite fibers to the polyurethane micro powder is 24: (5-9). The application has the effect of improving the fatigue resistance of the asphalt concrete, thereby prolonging the service life of the through bridge.

The application discloses a kind of foam asphalt concrete based on building solid waste recycled aggregate and preparation method thereof, including building solid waste recycled aggregate 99-101 parts, cement 1.3~1.8 parts, lime 0.8~1.2 parts, fiber 0.3~0.5 parts, water 10~13 parts, foam asphalt 3.2~3.7 parts.The preparation method of building solid waste recycled aggregate is as follows: first, soak, put silicate-containing wastewater and building solid waste recycled aggregate into airtight mixing device, so that silicate-containing wastewater completely submerges building solid waste recycled aggregate by 1~2 cm, soak for 4~7 h under normal temperature and pressure;second, mix, fill CO2 gas into the airtight mixing device after the first step of soaking, mix for 36~60 h under normal temperature and pressure when the pressure reaches 0.5~1.0 MPa, supplement CO2 gas every 4 h to ensure the pressure in the airtight mixing device is 0.5~1.0 MPa, and the rotation speed of the airtight mixing device is 25~35 r / min;third, clean, discharge silicate-containing wastewater from the airtight mixing device after the second step of mixing, and rinse building solid waste recycled aggregate with clean water;fourth, dry, take out building solid waste recycled aggregate after the third step of cleaning, and dry by baking or natural drying to obtain building solid waste recycled aggregate strengthened by silicate-containing wastewater.

The invention belongs to the technical field of road engineering, and discloses a concrete bridge deck pavement structure and a construction method.The concrete bridge deck pavement structure comprises a concrete base layer, the top of the concrete base layer is covered with a waterproof binder, and the top of the waterproof binder is covered with an asphalt concrete mixture; the top of the asphalt concrete mixture is covered with a stone mastic asphalt mixture; the waterproof binder adopts an asphalt binder or an epoxy resin binder; the paving thickness of the asphalt concrete mixture is 4.5 cm, and the paving thickness of the stone mastic asphalt mixture is 4 cm. By optimizing the thickness combination of the upper surface layer and the lower surface layer and improving a waterproof binder material and a forming process, light weight, durability and economization of bridge deck pavement are achieved, and the bridge deck pavement structure can be suitable for bridge engineering in high-temperature and rainy areas.

The utility model relates to the technical field of road construction, and discloses an anti-pollution device for a kerb spraying layer oil. The device comprises an inverted-U-shaped base, walking wheels are arranged on the inner wall of a horizontal section of the base, limiting wheels are arranged on the inner wall of a vertical section of the base, a movable handrail is arranged above the base, an oil blocking part and a sweeping part are arranged on the vertical section close to a kerb oil spraying face, the sweeping part is located on one side of the advancing direction of the oil blocking part, and the oil blocking part comprises a Z-shaped oil blocking plate. When in use, the device is pushed by moving the handrail to move along with the permeable oil vehicle on the curb, the walking wheels and the limiting wheels ensure stability, the oil blocking part effectively shields permeable oil and prevents the permeable oil from splashing to pollute the surface of the curb, the sweeping part cleans the surface of the curb in advance, and the bonding degree of the curb and an asphalt concrete surface layer is enhanced; the heights of the oil blocking part and the cleaning part are adjustable to adapt to different construction scenes; the problems that the kerb is polluted by prime coat oil and the bonding quality is poor in a traditional process are solved, and the road construction quality and efficiency are improved.

The utility model relates to a bridge for communicating highways on two sides of a river channel, which comprises a plurality of groups of piers, a plurality of rubber supports and a plurality of connecting pieces, the bridge deck slab is arranged at the tops of the two adjacent sets of bridge piers and supported through rubber supports and comprises a plurality of hollow slab beams which are arranged side by side in the length direction of the bridge, a hinge joint is arranged between every two adjacent hollow slab beams, an anchor bolt structure connected with a bridge pier cover beam is arranged in each hinge joint, and a waterproof buffer structure is arranged at a continuous joint on the bridge deck slab. A telescopic structure is arranged at the expansion joint between the bridge spans; the bridge deck pavement concrete layer is poured on the top of the bridge deck slab, and the hinge joint is filled; the medium-grain asphalt concrete layer is poured on the top of the bridge deck pavement concrete layer; and the fine grain type asphalt concrete layer is poured on the top of the medium grain type asphalt concrete layer. Compared with a traditional bridge, the overall performance and durability are improved, and the using effect is good.