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Construction Process of Grinding Old Asphalt Concrete Surface

 Milling process, first as required to determine the location of the old road, width, depth. Milling machine in the starting point along the side in place, put the position, according to the height of the dump truck compartment height adjustment of the mouth height position. The dump truck is parked in front of the milling machine waiting to receive the milling material. Start the milling machine, by the two technical staff to operate the left and right sides of the milling depth control

Instrument, according to the requirements of a good depth. When the depth is adjusted, the milling operation is performed by the operator. During the milling process, the front of the dump truck by hand to move forward, so as not to milling machine out of the conveyor belt hit the car after the dump truck, while observing whether the car is full, command milling machine to stop the output milling material. Command the next dump truck in place to receive milling material. At the same time command milling machine U-turn or reverse work. During the milling process, the two technicians should follow the milling machine and observe the milling effect. If the milling depth is not correct or the milling is not complete, the milling depth will be adjusted in time. If the milling plane is uneven, Deep groove situation, timely inspection milling cutter head, whether damaged, timely replacement, so as not to affect the milling effect. During the milling process, the waterwheel is on standby at any time because the milling needs to be depletedRoad Repair Equipment - Doan Machinery

The amount of water, the need for timely water. Milling is done in sub-form. Requires a milling molding, a thorough old Lek Green concrete pavement clean, not left corners, or two milling interface interface is not good, there is missing old asphalt concrete. For those who are not transported to the dump truck on the milling material, piled to the road, to promptly manual cleaning, so as not to affect the future traffic.

The stacking site should be flattened and compacted. Planning scope, clear signs. Milling and gripping sand mixing method. Milling and Klink Sand mixing using mechanical mixing. That is, the way the loader is combined with the excavator, and one site is packed with a loader and two excavators. Place the milling material and the Klink Sand stacking position closer to the loader Shovel together, with the excavator twice turned to mix. If the mixing effect is not good, need to use the excavator again to turn to mix until the requirements so far. Prevent dust pollution. To timely add water to the milling machine, to reduce the generation of dust. To prevent contamination of milling material. Do not cut the milling material in the river, the roadside, in a timely manner, transported to the designated location. To check the milling effect in a timely manner, check the milling width, depth, and milling position. Check the stacking position of the milling material to check whether the stacking is in compliance with the requirements. Whether it is a mess. For mixing a good mix of materials to be timely sampling experiments to guide the construction of mixing.

Overview: for the laying of asphalt or workshop on the deck of the old concrete ground before re-paving the concrete, remove the cement floating slurry and flatten the nap, but also used to remove the construction of the hard residue left in the construction. Features: Spindle bearings use internationally renowned NSK spherical spherical bearings, to ensure that the machine to adapt to strong load, high speed working conditions; blade using imported high-quality carbide, sharp wear, long life; Connection, torque shock resistance; single bearing support, machine edge performance is better, more suitable for construction within the workshop; depth adjustable, rotation depth adjustment wheel can be. For the laying of asphalt or the old concrete floor on the deck before the paving of concrete, remove the cement puddle and flatten the bristles, and also remove the hard slag left in the construction. Features: Spindle bearings use internationally renowned NSK spherical spherical bearings, to ensure that the machine to adapt to strong load, high speed working conditions; blade using imported high-quality carbide, sharp wear, long life; Connection, torque shock resistance; single bearing support, machine edge performance is better, more suitable for construction within the workshop; depth adjustable, rotation depth adjustment wheel can be.Road Repair Machines

With the increase of the mileage of expressway in China, the rapid development of urbanization, the increase of road reconstruction work in large and medium cities, the road cold milling machine as one of the main models of road maintenance projects, its advanced technical performance, High efficiency, simple construction methods, has been more and more attention by the construction unit. According to the engineering machinery industry statistics, at present, the number of cold milling machines used in our country is at least 3,500, and the number of 250-300 units is increasing every year. Domestic construction units have been out of manpower and milling machine difficult to choose the stage, now consider how to use the milling machine, looking for more efficient construction methods. China's road cold milling machine industry market prospects, milling machinery supporting parts and tools market promising.

Milling is one of the main consumables in the process of milling machines. The reasonable design and proper use of the milling teeth have an important effect on the working efficiency and construction quality of the milling machine. At present, the domestic cutting production enterprises on the milling teeth, especially the structural design of concrete milling teeth, cloth form lack of in-depth theoretical analysis, affecting the milling effect and picking and tooth seat life. Reference to foreign advanced drilling production enterprises of similar products, to develop design ideas, and thus improve product performance, to produce their own characteristics of the milling cutter will help.

Pavement Cold Milling Machine During the working process, the milling drum mounted on the lower part of the machine drives the milling cutter to rotate at high speed, and the pavement material is milled through the milling machine's own weight and mechanical forward movement. High-speed rotation of the milling cutter under the action of gravity and thrust with the milled pavement material produced a high contact stress, the contact stress reaches the limit, the pavement material is crushed and caving. With the linear motion of the milling machine and the rotation of the picks, the pavement objects are crushed and cradled alternately, thus completing the milling road work. Milling machine is usually in the alloy structure steel cutter body inlaid with carbide teeth, alloy teeth and steel cutter body with copper solder sink welding method for welding, and then re-quenching heat treatment and throwing Pills and other enhanced treatment process, made of good toughness of the cut. Pick-up alloy and trousers with steel material, as well as the structure and production process determines the use of picking performance. The accessory part of the pick includes a retainer sleeve, a preloaded gasket. The retainer is used to fix the picks and to ensure that the picks are rotated in use. Preloaded gaskets are easy to install and increase the rotation of the picks while protecting the outer surface of the picks from being worn. See the components of the picks.Road Repair Equipment - Doan Machinery

The following are the same as the "Alloy teeth are usually coarse grain tungsten carbide alloy, in the case of high temperature, high impact with good toughness and wear resistance, through copper brazing connection in the steel pants body. Milling teeth require a high weld strength, can withstand the application of the alloy teeth and knife handle at 45 ° angle, 6 tons of force generated by the bending moment and not fall off. At the same time, the upper and lower parts of the steel pants body also require different mechanical properties, the front and the road and milling waste material to produce friction requires a high hardness, the rear handle into the tooth socket, the need to absorb the milling process Impact energy, which requires better toughness. There is a reamer in the middle of the tooth, you can use the unloading pliers to pick out the pick from the tooth seat, there is no back to the groove can be used from the back of the punch directly out of the punch. Some of the cutting head is also equipped with grooves to increase the rotation performance with the ground friction process to prevent tooth picking.

Pre-pressure gasket made of high-quality spring steel, similar to the disc spring, was inverted cone. There are two uses: first to reduce the tooth wear. When the work of the rotating head if installed directly on the tooth seat, is bound to bring serious wear and tear to the knife seat, and the price of tooth seat is much higher than the pick, so to install a gasket between, so that when the rotation Only with the gasket friction, so as to protect the tooth base; Second, the cone of the gasket and the teeth of the tapered positioning surface with the exact work to ensure that the teeth in the tooth in a good alignment, The wear and tear.

The so-called synchronous gravel seal, is the use of special equipment that is synchronized gravel seal car and bonding materials (modified asphalt or modified emulsified asphalt) simultaneously spread on the road, through natural driving or tire roller rolling Single layer of asphalt gravel wear layer, he is mainly used as a pavement surface layer can also be used for low-grade highway surface construction. The simultaneous gravel seal concentrates the spraying of the binder with the aggregate process in a vehicle at the same time, allowing the gravel particles to come into contact with the sprayed adhesive immediately. At this point, due to hot asphalt or emulsified asphalt flow is better, can be buried at any time deeper into the binder. The simultaneous gravel sealing technology shortens the spacing between the adhesive spray and the aggregate spreading, increases the area of ​​the aggregate particles and the binder, makes it easier to ensure a stable ratio between them, improves the work efficiency, Reduce the equipment cultivation, reducing the construction costs. Asphalt pavement after the treatment of synchronous gravel seal, the road has a good anti-skid performance and impermeability performance, can effectively cure the road lean oil, drop particles, minor cracks, rutting, subsidence and other diseases, mainly for the road Preventive and Reproductive Maintenance The simultaneous gravel sealer is used to synchronize the spraying of the asphalt binder and the spreading of the stone so that there is the most adequate surface contact between the asphalt binder and the aggregate to achieve the maximum between them Bonding of special equipment.Road Repair Equipment - Doan Machinery

Whether for road maintenance or as a transitional pavement, the performance of synchronous gravel seal is significantly better than other methods, thus greatly reducing the road maintenance and repair costs. On the original road disease repair role. After the road surface of the road surface of the small cracks, reticulate, lean oil, oil and so have a good repair effect. Short construction period. Sealing the road can be speed limit open traffic, ease the traffic situation, to ensure the normal use of the road. Construction process is simple, practical, wide range of applications. Reduce road maintenance costs. Compared with the traditional black road maintenance, synchronous gravel seal layer use efficiency is high, unit construction cost is low, can save 40% to 60% of the funds.

Bamboo floor in use, because air humidity produces change, bamboo floor appeared bug eat by moth, guarantee according to national timber floor byelaw WB/T 1017-2002, discover bug eat by moth should change floor, if individual floor board has not join a bug wood, just change freely by construction floor, if bedding face accumulates floor bug wood, belong to maintain responsibility, be in charge of by the user, the beard is paid change floor.

Bamboo floor is carrying a process medium or in laid process, because do not take care to be able to cause floor damaged, be like local the floor board that meets the hard injury of horn, board face, that touch mark to discover collision damaged when laid can be in its laid wall edge or floor decide laid indoors two-terminal, lest waste material.

Bamboo floor is used in because do not take care to be able to cause board face damaged, if local surface flakes, board face hard injury, nick, touch mark, cigarette to iron burn mark, knife mark to wait to all be belonged to blame is normal safeguard, the user should be strengthened safeguard.

Bamboo floor is in when making because intensity of moisture content, agglutination is unqualified, what can create a floor board in the be affected with damp be affected with damp when using or drying shrinkage is statified, make bamboo floor discards as useless, belong to; of serious quality problem

Guarantee according to national timber floor byelaw WB/T 1017-2002, bamboo floor appeared statified, detect the floor that exceeds bid should be given by laid unit local change.

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Asphalt batch mix plant is an ideal construction equipment used for manufacturing of asphalt that is mainly used for road construction and other civil construction. Asphalt is prepared by mixing appropriate proportion of aggregates, sand and stone dust, heated and then appropriate promotion of bitumen is mixed on standard temperature and then it is transported to work site.

Speedcrafts Ltd. is counted as a leading manufacturer and exporter of asphalt batch plant in India. Since its inception in 1971 , the company has done comprehensive research and development to produce high quality asphalt batching plants that are available in various choices to choose from. We offer batch mix asphalt plant in various sizes and configurations - be it mobile asphalt plant equipment, portable asphalt batching plant, customized / fixed asphalt plants etc. Moreover, easy to operate and low maintenance cost are some of key features of our mixing plant. Batch Type Asphalt Mixing Plant as per European standards are being manufactured with capacity ranging from80 TPH up to 260 TPH.Road Repair Machines

Features :4 / 5 / 6 pre batch feeder system fitted with independent variable drive electric motors and one bin fitted with vibratory motor.Fully insulated Dryer fitted with automatic silenced burner complete with infrared probe, pre heater and Dryer feeding conveyor.Hot elevator system.Four / Five deck vibratory screen.Four / Five hoppers for storage of hot aggregates.Aggregates, bitumen, filler and hot mix weighing unit.Bitumen storage and heating system with hot oil heat exchanger.Fully computerized control panel with PC, PLC, Video, Printer and power room.Bag type air pollution control system with NOMEX bag filters complete with exhauster and chimney.Filler elevator for recovered dust from bag filters.Hot mix silo with 2 compartments, discharge doors, intermediate hopper and level indicator.

The anti-cracking paste is a roll-type anti-cracking waterproof barrier, which is coated with a 2mm thick polymer waterproofing film coated on a 0.3mm thick anti-wrinkle anti-heavy type polypropylene material, which is compounded by the harsh process. With self-adhesive layer of anti-cracking, waterproof material. This layout is now on the road alone the use of geosynthetics materials, stress absorption layer of material and other anti-cracking, anti-water pace of the organic joint, is the current road between the crack, waterproof material optimization portfolio upgrade products. Grass-roots anti-cracking stickers are important for highways, the same as the road and the general road construction and maintenance projects.Double Steel Roller - Road Machinery Equipment Manufacturers - Doan Machinery

Reinforced high-strength high-temperature resistant fabrics with high tensile strength, can be used to resist the tensile stress at the gap between the layers, limiting the width of the gap growth, played a role in reinforcement, and improved the local layout of the asphalt pavement The tensile strength of the layer. Energy dissipation buffer effect, the grass-roots anti-cracking paste in the polymer is a certain viscoelastic material, and excellent low temperature flexibility, laying in the asphalt pavement, is equivalent to set in the affirmative low temperature conditions also has excellent sticky Elastic composite layer, the tensile stress at the gap through the expansion of the excellent viscoelastic composite layer and gradually decay to a wider range, can play the role of drawing the tensile energy. Water seepage seepage effect, grass-roots anti-cracking paste laying in the gap between the appearance of the gap to form a complete water impermeable layer, can cut off the rain and snow infiltration path, thus eliminating the road water damage. Self-adhesive properties. The product has a self-adhesive, the construction is very convenient, peeled off the film directly bonded to the gap after the site, to accept the small compaction set equipment deployment regulator, and the road bonding more solid, no progress, Upper floor asphalt mixing material paving construction requirements. The base layer of anti-cracking paste in the gap or peeling off the asphalt concrete surface, can be eliminated and the role of the road surface of the temperature stress, and therefore eliminated the gap through the surface layer of the trend, laying and pavement because of its lower and The upper wear layer is separated from the upper layer so that the upper layer is protected from multi-directional displacement and shear stress, for roads, bridges, and airports.

The utility model discloses a asphalt pavement axle restoring machine, which comprises a bottom plate and two ends of the bottom plate are symmetrically provided with a guide wheel for moving. The upper surface of the bottom plate is provided with a bracket, the hydraulic cylinder is arranged on the bracket, the lower end of the hydraulic cylinder is A pressing roller, the bottom plate is provided with a through hole for rotating the pressing roller, the side surface of the bracket is provided with a heating device, the heating device comprises a shell fixed on the bracket, a resistance wire for heating the asphalt, The upper surface of the shell is provided with a fan, and the upper part of the shell is provided with a motor for driving the rotation of the blade. The bottom plate of the resistance wire is provided with an air outlet for heating the asphalt pavement. The utility model in the use of the process, you can quickly repair the road, a new technical program, easy to operate, and the price is low, easy to promote the use.Road Repair Machines

An asphalt pavement axle restoring machine is characterized in that the bottom plate and the bottom plate are symmetrically provided with a guide wheel for moving, the upper surface of which is provided with a bracket on which a hydraulic cylinder is provided and a lower end of the hydraulic cylinder is provided with And the bottom plate is provided with a through hole for the rotation of the press roller, the side surface of the bracket is provided with a heating device, the heating device comprises a shell fixed on the bottom plate, a resistance wire for heating the asphalt, an upper surface of the resistance wire There is provided a fan, the upper part of the shell is provided with a motor for driving the rotation of the blade, and the bottom plate of the resistance wire is provided with an air outlet for heating the asphalt pavement The present invention discloses a vehicle-mounted microwave heating asphalt pavement repairing machine comprising a crawler type road surface repairing device provided on a load-bearing vehicle, Wherein the generator set is powered by an energy umbilical belt to the crawler type road surface repairing device, the crawler road repairing device comprising a crawler traveling device and a frame mounted on a running beam provided on the crawler belt walking device, The frame is provided with a heater, a storage box and a compaction mechanism. The vehicle-mounted microwave heating asphalt pavement repair machine provided by the invention has the advantages of simple structure, low cost and simple structure, and can be used for simple heating, compaction and repairing, and the heating, packing and compaction repair operation can improve the use performance. While carrying the vehicle can be transported to the scene as a whole repair machine, while the generator unit for the repair machine power supply, greatly improving the convenience and mobility.

work is busy, so can't completely with the old person, child's request, best family discussion consensus, in determining the direction of the floor of choose and buy.Also consider the use of performance of the floor, it is yet for a long time, will in the laying of the construction on the surrounding construction operation and damage;The last to consider their own economic ability, budget cost.The kinds of wooden floor

basically has: real wood floor, aggrandizement wood floor, solid mu fu joins a floor board, bamboo floor and so on more than a dozen.Implementation to know to choose what kind of floor, and then you can have the focus to selection decisions.Type is determined, further determine the tree species, design and color, the scale, price, specifications.Wood floor manufacturer and brand on the market at present

more let a person dazzling, too many things to see, 3 without the product everywhere.So be sure to know when the choose and buy the brand and reputation of the floor.Well-known trademark floor of choose and buy as far as possible.Through the above steps of investigation and study, on the floor, the kinds of design and color, quality specification and price already accomplish know fairly well, which

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HS polymer road sealant, is specifically for the actual situation of China's research and development of a crack sealant products. The product has strong adhesion, temperature resistance, tensile volume, easy construction and other characteristics: strong adhesion, protection and contact with a good adhesion; good temperature resistance for a temperature range of -30 ℃ a High elasticity, large amount of elongation, can withstand large displacement; easy construction, easy to heat the material, the viscosity is small, into the dense. China's vast north-south climate vary widely, different regions of the temperature corresponding to different materials, HS polymer road sealant ABC three specifications, high temperature, general type, low temperature type, for the majority of customers choose.Road Repair Machines

At present, the product is widely used in asphalt pavement cracks, cracks in the conservation of the seal, the road cover before the grass-roots cracks in the bridge, both ends of the bridge cement and asphalt pavement junction transition, bridge expansion joints, airport runway cement concrete pavement Seal processing. Construction instructions: the best construction temperature of the irrigation joints at 7 ~ 18 ℃: If the temperature below 4 ℃, the filling machine must be equipped with preheating equipment, the slotted parts of the preheat; if not at this temperature Preheat to fill the seam, will reduce the adhesion of the sealant. In the sealant heating temperature of 180 ℃ -210 ℃ between (not higher than 210 ℃), with the filling machine out of the pipe nozzle to seal the glue evenly into the tank, and dragged on both sides of the cracks into a certain width And the thickness of the seal; due to the sealant after cooling the volume will shrink, in order to achieve the desired effect of irrigation, can be taken back and forth twice the method. For example: eager to open the traffic, just filling the sealant to be sprinkled on its surface dry sand, and other sealants fully cooled, clean the road after the slag in the open traffic. The general cooling time is about 15 minutes, the specific time according to the temperature at that time to master.

 Do not let children or other non-professionals close to the heating equipment or hot material; stored in a cool dry place. Do not let the children or other non-professionals close to the heating equipment or hot material;

Data link: This paper presents the concept of high performance expanded concrete (HPEC), that HPEC is the expansion of concrete (EC) and high performance concrete (HPC) to play their respective advantages of organic combination. Firstly, the strength performance, expansion performance and the coordination between the expansion and the strength of the HPEC concrete are introduced systematically. The effects of the expansion and strength on the expansion and strength of the concrete are discussed. Hydration mechanism.Double Steel Roller - Road Machinery Equipment Manufacturers - Doan Machinery <.p>

Over the past 10 years, the research of concrete materials has been developed in the direction of high performance concrete (HPC), not only with high strength, but also with good construction and durability. In the configuration of high-performance concrete, are usually mixed with a superplasticizer (superplasticizer) and ultra-fine mineral admixture, which achieved a low-hydration, low cement, low hydration heat and high performance The With the development of concrete construction technology, the expansion of concrete has also entered the fluidization, high strength, superplasticization stage. All the trend of diversification of cementing materials, and widely used pumping concrete construction technology, and some also to achieve self-dense construction. It can be seen that the development of expansive concrete has entered the field of high performance concrete, on the one hand in the material preparation and construction are with high performance concrete characteristics; the other hand, in order to ensure the stability of high-performance concrete volume, Some bulking agent to compensate for its contraction. Expanded concrete and high performance concrete organic combination, forming a high-performance expansion of concrete (HPEC).

The shrinkage is large and the tensile strength is lower than that of concrete. When the shrinkage causes the tensile stress inside the concrete to exceed the tensile strength of the concrete, the concrete is cracked. It is generally considered that the fracture is the biggest drawback of concrete, which will lead to moisture, such as the invasion of harmful media, to accelerate the corrosion of steel bars and reduce the durability, and cause leakage is the phenomenon of structural use of the function of the reduction or loss.

Sliding mode cement concrete paver When laying concrete pavement, the general construction process is: spiral feeder to cement concrete in the width of the wide spread out, adjustable height of the hydraulic scraper to the concrete scraped to the pre-shop height, the hydraulic drive Of the frequency of the vibration into the vibration of the vibrator, so that the concrete to achieve the desired compact effect; and then pound on the board, under the tamping, and further solidified at the same time the surface of coarse aggregate pressure into the cement concrete, forming a thick layer of mortar Layer; and then by the wiping plate and lateral sliding template to squeeze each other to form concrete pavement concrete. Sliding mode cement concrete pavers are usually composed of power transmission system, main frame system, walking system, automatic control system, operating device, auxiliary system and other components. The advantages of the rail paver are simple structure, low price, good reliability, easy maintenance, easy operation, relatively low requirements for the mix; but its construction requires a lot of rails and templates, labor intensity, construction speed And construction quality are relatively low.Road Sealing Machine - Road Machinery Equipment Manufacturers - Doan Machinery

Cement concrete pavers often appear in the following common faults: cement concrete paver spiral feeder failure spiral feeder in the course of the use of high oil pressure, do not turn the phenomenon, the reason may be from the 4 Aspects. Spiral feeder ends are damaged. Generally due to the bearing outside the oil seal and dust jacket caused by damage. The concrete mortar enters into it to cause the screw feeder to stuck or the resistance is too large, causing serious damage to the bearing. At this point only need to replace the bearings, oil seals and dust cover, add a new lubricant can be. The chain is too long. When the chain is stretched to a certain extent, the sprockets will be stuck in the box box shell, this time to be renewed and filling the oil. Planetary gear reducer. Remove the helical feeder and the sprocket cover, turn the active sprocket, if not turn, just remove the drive wheel to observe the damage to the planetary gear unit. The cause of the damage is generally due to individual gears, ring gear processing caused by poor quality, need to replace the assembly. Hydraulic pump, hydraulic motor failure. If the hydraulic pump is damaged, the indication value of the hydraulic pressure gauge is low; if the hydraulic motor is damaged, the indication value of the hydraulic pressure gauge is also low, and the damaged side has no action. In the event of any of the above, the assembly must be replaced.