42results about How to "Extended construction season" patented technology

The invention relates to an asphalt warm-mix agent, comprising the following components in percentage by weight: 1.0-2.0% of alkylamine type cationic surfactant, 3.0-5.0% of amide type cationic surfactant, 5.0-10.0% of ammonium salt type cationic surfactant, 1.01.5% of calcium chloride, and water with residual percentage. The invention also relates to an asphalt mixture with the pavement applicability basically same as the traditional hot-mix asphalt mixture and the mixing and construction temperature lower than 20-50 DEG C; the purposes of energy saving, emission reduction, longer construction season, asphalt aging reduction and easier compaction are realized by reducing the mixing temperature; the indexes of the compaction degree, the water stability, the high-temperature performance, the low-temperature performance and the like of the pavement after paving the asphalt are not lower than those of hot-mix asphalt mixture at the same stage; and the service life of the asphalt pavement is efficiently guaranteed.

The present invention discloses a static electricity-conducting anti-corrosive epoxy coating, which comprises a component A and a component B; wherein, the component A is composed of epoxide resin, epoxy active diluent, epoxy-terminated modified urethane resin, flaky conductive mica powder and granular conductive titanium pigment; the component B is composed of modified fatty amine, modified alicyclic amine and curing accelerator; the component A and the component B are mixed according to a proportion to prepare the double-component, non-carbon static electricity-conducting anti-corrosive epoxy coating without solvent. Because the static electricity-conducting anti-corrosive epoxy coating does not use volatile liquid solvent, adopts 100 percent of solid ingredients and uses the technical scheme of polyfunctional flexibilizer and the flaky and granular composite conductive media, the static electricity-conducting anti-corrosive epoxy coating has the advantages of high safety, energy saving, environment-friendliness, good static electricity-conducting property, good anti-corrosive property, one-step spraying and filming and convenient construction, so the static electricity-conducting anti-corrosive epoxy coating is widely applicable to the field of the static electricity conduction and corrosion prevention of oil storage tanks and has a wide market prospect.

The invention belongs to the technical field of preparation of insulators for the construction of asphalt pavement road rollers and relates to an insulator for the low-temperature construction of road rollers and a method for preparing the same. The insulator is mainly prepared by mixing silicone oil, compound emulsifier, glycerin, pH regulator, preserving agent and water. The insulator has the advantages of high chemical stability, high high-low temperature resistance, no corrosion to steel wheels, small amount of coating, lasting insulating effect, environment friendliness and the like. By using the insulator, the asphalt mixture pavement is guaranteed to be constructed at the ultralow temperature (15 DEG C below zero), so that the working season is greatly prolonged; and during normal-temperature construction, by using the insulator, the mixing temperature of the asphalt mixture is reduced to 15 to 20 DEG C under the condition of unchanging the compaction degree and the emitted greenhouse gases are reduced in the mixing process and the environment-friendly and energy saving requirements are met.

The invention relates to an organobentonite composition modified emulsified bitumen and its preparing method. The bitimen is composed of 60-62 protions base bitumen,34-36.4 protions water,0.5-0.8 protions cationic emulsifier,1-3 protions organobentonite,2-4 protions butadiene styrene latex,0.1-0.2 protions thickening agent.Its prparing method comprises: mixing emulsifier solution uniformly, then mixing and emulsifying with base bitumen by emulsifying machine, then adding organobentonite and thickening agent to emulsified bitumen, mechanically stirring, mixing uniformly and deforming to obtain modified emulsifier bitumen. The invention has advantages of fine capability, high production efficiency, easy control, convenient operation and low cost.

The invention provides a warm mix anti-rutting asphalt mixing material and a preparation method thereof. The warm mix anti-rutting asphalt mixing material comprises 0.25-0.5% by weight of a warm mix asphalt additive and 0.1-0.6% by weight of an anti-rutting asphalt modifier. The warm mix anti-rutting asphalt mixing material has the following characteristics that: a warm mix effect is significant; a mixing temperature can be reduced by more than 30 DEG C, and a paving temperature can be reduced; and an anti-rutting performance of an asphalt mixing material can be significantly increased, low temperature cracking resistance and other performances can be improved, and a performance price ratio is high.

The invention relates to a graded broken stone filling type semi-flexible composite pavement mixture, which comprises the following components in parts by mass: 100 parts of graded broken stone; 4-6 parts of water and 6-10 parts of a grouting material. The grouting material comprises cement, water-based acrylic resin, a volcanic ash material and water. The grouting material is poured into the graded broken stone. The semi-flexible composite pavement mixture can be constructed at normal temperature, thus effectively solving the rutting problem of asphalt pavements and improving the durability of the pavements. The environmental pollution caused by hot mix construction of a filled semi-flexible pavement can be reduced. The construction efficiency of a filled composite pavement is improved, and the production cost is reduced.

The invention relates to the field of road materials, and discloses a compound asphalt mixture wet-mixing additive and a preparation method thereof. According to the compound asphalt mixture wet-mixing additive, production and construction temperatures of a hot-mix asphalt mixture can be reduced. The compound asphalt mixture wet-mixing additive is characterized by comprising the following components in parts by weight: 20-50 parts of microcrystalline wax, 20-50 parts of stearic acid, 10-20 parts of polyethylene wax, 5-20 parts of EVA (ethyl vinyl acetate) wax and 0-10 parts of plasticizer. The preparation method comprises the following steps of: uniformly mixing the polyethylene wax, the EVA wax, the stearic acid and the plasticizer under the mechanical stirring action, then adding the microcrystalline wax, continuously stirring and uniformly mixing to obtain a mixed dry material; and finally, adding the mixed dry material in a granulating machine melting furnace, heating at a temperature of 120-130 DEG C and melting, then granulating, cooling and drying. According to the compound asphalt mixture wet-mixing additive, the blending temperature of the asphalt mixture can be effectively lowered by about 30 DEG C, and better used road performance can be ensured.

The invention relates to a modified bituminous mixture and a method for preparing the modified bituminous mixture. The modified bituminous mixture contains aggregate, common asphalt, an additive and mineral powder, wherein the additive contains water, a cationic surface active agent, a stabilizer and a modifier. The method comprises the following steps: firstly, heating water, adding the cationic surface active agent to dissolve, and then adding the modifier and the stabilizer; grinding by a colloid mill to form the additive; heating the aggregate to 140-160 DEG C, adding to a mixing cylinder to mix for 30 seconds; simultaneously adding the common asphalt heated to 120-140 DEGC and the weighed additive to the mixing cylinder, and then stirring for 40-60 seconds; and adding the cement or the mineral powder to the mixing cylinder to mix for 30-60 seconds, and discharging at 100-120 DEG C, so as to obtain the modified bituminous mixture, wherein the compact molding temperature is 90-110 DEG C. By adopting the modified bituminous mixture, energy source consumption and environmental pollution are reduced, the performance of the asphalt mixture is improved, the modified bituminous mixture can adapt to the requirements of a low-temperature construction technology, and the technology is relatively simple.

The invention discloses a construction method of an asphalt surface course in a low temperature and wet environment, and the construction method comprises the steps of designing a warm mixed asphalt mixture and preparing a raw material; adopting a coarse dense-graded asphalt mixture and forming a level S-shaped grading curve, mixing and producing the warm mixed asphalt mixture in a mixing cylinder, transporting the warm mixed asphalt mixture to a construction site, drying and heating a pavement, keeping a working plane dry, paving the warm mixed asphalt mixture continuously and uniformly, and conducting initial rolling, rerolling and final rolling on the pavement. The invention provides a general and feasible drying method of the wet, icy and snowy working plane. A heater used for reclamation construction of the asphalt pavement is adopted to heat and dry the pavement, so that the problem that the asphalt surface course cannot be constructed in the low temperature and wet environment in winter is solved.

The invention discloses a warm-mixed rubberized asphalt mixture and a preparation method thereof. The warm-mixed rubberized asphalt mixture comprises rubberized asphalt, aggregates, mineral powder and a warm-mixed agent; the warm-mixed agent is inorganic aluminosilicate with moisture content of 18-23%; and through taking the weight part of the rubberized asphalt as one part, the warm-mixed rubberized asphalt mixture comprises 10-20 parts of aggregates, 0.15-1 part of mineral powder and 0.02-0.08 part of warm-mixed agent. Meanwhile, the invention also discloses a preparation method of the warm-mixed rubberized asphalt mixture; and in the method, the adding sequence, control temperature and mixing time of each material are described in detail. The warm-mixed rubberized asphalt mixture disclosed by the invention effectively reduces the mixing temperature of the rubberized asphalt, solves the problem that a rubberized asphalt mixture is uneasy to compact, reduces the consumption of fuel and the emission of harmful gas, reduces the damages on the environment and the health hazards on the construction personnel, and facilitates the stored production.

The invention discloses a high-shearing and high-bonding coating material and a preparation method thereof. The coating material is prepared from the following components in parts by weight: 0.4-0.6 part of powdery butadiene-acrylonitrile rubber, 0.2-0.3 part of a flame retardant, 0.2-0.3 part of a stabilizer, 3-5 parts of an asphalt modifier, 15-25 parts of asphaltene powder, 25-35 parts of matrix asphalt and 35-55 parts of a solvent. The coating material disclosed by the invention is reasonable in formula and simple in preparation method, has relatively high shearing strength between layer and bonding force, is good in low-temperature flexibility, free of cracks at -25 DEG C, strong in waterproof performance and great in construction temperature range, and the construction season is prolonged, and moreover, the coating material can be smeared, sprayed or sprinkled under a room temperature condition and is wide in application range.

The invention discloses a warm-mixing SBS (styrene-butadiene-styrene) modified asphalt mixture which comprises the following ingredients in parts by weight: 1 part of SBS modified asphalt, 11-36 parts of aggregate, 0.5-1.5 parts of mineral powder and 0.02-0.04 parts of an organic warm-mixing agent, wherein the organic warm-mixing agent is EC-120. Moreover, the invention discloses a preparation method of the warm-mixing SBS modified asphalt mixture. In the invention, on a basis of maintaining the basic performance of the asphalt mixture, the construction temperature is remarkably reduced, the construction peaceability is improved, the energy consumption in construction is reduced, the emission of harmful gas is reduced, and the destruction to the environment and the damage to the health of constructors are reduced.

The invention discloses an emulsified asphalt used for slurry seal and micro-surfacing. The emulsified asphalt contains the following components in weight proportion: 30-80 parts of asphalt, cationic emulsifier C-450 with asphalt accounting for 0.1-5%, 30-52 parts of water at 30-80 DEG C, a trace amount of inorganic salt stabilizer, and concentrated hydrochloric acid with pH value in the range of 1.5-7.0. The product is mainly applied on slurry seal technology, for example, reconstruction of old asphalt pavement, seal coat of new asphalt pavement, overlay of wearing layer on sand-gravel road, maintenance of cement concrete and bridge surface, etc. The emulsified asphalt can improve construction environment and prolong construction period without changing the performance thereof; and also can reduce noise and environmental pollution.

The invention discloses an ultrasonic welding construction method for a small-caliber PE natural gas pipeline, and relates to a pipeline connection method. The ultrasonic welding construction method for the small-caliber PE natural gas pipeline is high in construction efficiency and easy and convenient to operate. The ultrasonic welding construction method for the small-caliber PE natural gas pipeline comprises the following steps that the pipeline is subjected to section cleaning, chamfering and surface oxide skin removing treatment; the pipeline is installed in a clamping and welding device; the position of the clamping and welding device is fixed; an upper fixing block and a lower fixing block are arranged to fix the upper pipeline section and the lower pipeline section correspondingly; a plurality of ultrasonic wave generating devices are arranged on the periphery of the upper fixing block, and the ultrasonic wave generating devices are pressed by pressing blocks; an electromagnetic valve and a push rod are arranged on each pressing block, and the bottom of each push rod is connected with the pressing block; and the ultrasonic wave generating devices are started, ultrasonic waves are generated on the pressing faces of the two pipeline sections, the pressing faces of an upper PE natural gas pipeline body and a lower PE natural gas pipeline body are melted, and the welding process is completed.