34results about How to "Short opening hours for traffic" patented technology

The invention relates to normal-temperature-modified asphalt for a high-strength cold-laid asphalt mixture and a preparation method of normal-temperature-modified asphalt. The normal-temperature-modified asphalt for the high-strength cold-laid asphalt mixture comprises the following components in parts by weight: 58-64 parts of petroleum asphalt, 21-30 parts of a reactive diluent, 11-14 parts of a diluents, 0.01-1 part of a flame retardant and 0.01-1 part of a modifier. The normal-temperature-modified asphalt is small in viscosity at normal temperature and has good construction workability; the softening point of the normal-temperature-modified asphalt is higher than that of ordinary petroleum asphalt and the normal-temperature-modified asphalt has the advantages of large elastic recovery rate, short surface drying time, high curing-molding rate and strong coating force with an aggregate. The cold-laid asphalt mixture prepared from the normal-temperature-modified asphalt has the advantages of high early strength forming speed after paving, high molding strength and short open transportation time compared to the conventional cold-mixing asphalt mixture and meanwhile, the high temperature performance, water stability and the low-temperature performance can reach the technical requirements of the hot-mixing asphalt mixture and the preparation method is simple, economic, environmentally friendly and energy-saving.

The invention discloses a repair material for an extremely cold pavement as well as a preparation method and an application of the repair material. The repair material is prepared from raw materials in parts by weight as follows: 60-70 parts of Portland cement, 32-40 parts of fine sand, 11-19 parts of sodium gluconate, 18-26 parts of diethylenetriamine and 23-31 parts of polyketone resin. Diethylenetriamine is mixed with ethanol which is 3.5-4 time the mass of diethylenetriamine, and a diethylenetriamine solution is prepared for standby application; polyketone resin is heated to 65-70 DEG C, heated and stirred for 30-35 min at the temperature and then heated to 78 DEG C, the diethylenetriamine solution is added, a mixed solution is subjected to sealed heating and stirring for 0.7-0.8 h atthe temperature of 78 DEG C, and a mixture is prepared; the Portland cement, the fine sand and sodium gluconate are mixed and stirred uniformly, the mixture is added, stirring is executed for 1.1-1.2h, and the repair material is obtained. The repair material has good low-temperature crack resistance, high-temperature stability, interface bonding property, aging resistance and anti-fatigue performance and high liquidity, the pavement can be open to traffic 0.7 h after being repaired with the repair material, and accordingly, the repair material is applicable to repair for cracks and seams of the cement concrete pavement under extremely cold weather conditions.

The invention provides a motorway concrete bridge telescopic seam transition area restoration structure and a construction method. The motorway concrete bridge telescopic seam transition area restoration structure and the construction method are characterized in that the restoration structure designed through the construction method is composed of a high-performance wearing layer (1) and a superhigh-toughness self-compacting concrete structure layer (2); the high-performance wearing layer (1) is arranged on the superhigh-toughness self-compacting concrete structure layer (2) in a covering mode; and the superhigh-toughness self-compacting concrete structure layer (2) is internally equipped with a pre-stressed steel stranded wire truss (3). By adoption of the motorway concrete bridge telescopic seam transition area restoration structure and the construction method, comprehensive mechanical performance such as fracture toughness and impact resistance and durability of the motorway concrete bridge telescopic seam transition area restoration structure can be remarkably improved, and the traffic opening time is short.

The invention relates to a pavement patching material and a preparation method. The pavement patching material is characterized in that, in parts by weight, it comprises 40-68 parts of manganese slag, 32-56 parts of red mud, 16-34 parts of alkaline activator, 2-7 parts of silica fume, and 20-36 parts of calcium oxide. 10-16 parts of water. The pavement patching material of the invention can effectively utilize industrial waste residues to realize rapid hardening and early strength, has short opening time for traffic, has low pollution and energy consumption in the production process, and has low production cost.

The invention discloses a self-healing viscous layer oil and a preparation method. The raw materials are composed of two components. Component 1 includes 93-97 parts of petroleum asphalt, 1-2 parts of styrene-butadiene-styrene copolymer, 3-6 parts of polyolefin, and 0.1-0.2 parts of stabilizer; Component 2 includes 2 parts of dimethyl silicone oil -3 parts, 94-96 parts of kerosene solvent, 1-3 parts of 4-phenoxyphenylboronic acid, and 1-3 parts of flame retardant. The petroleum asphalt is heated, and styrene-butadiene-styrene copolymer and polyolefin are respectively added to it and stirred and sheared, then a stabilizer is added, and stirring is continued to develop and swell to obtain component 1; add two to the kerosene solvent. Methyl silicone oil, 4-phenoxybenzene boronic acid and flame retardant are stirred to obtain component 2, and component 1 and component 2 are mixed and diluted in a ratio of 1:1 to 1:1.5, and stirred, A viscous layer oil with self-healing characteristics is obtained. The invention has the characteristics of high-strength interlayer bonding performance, high self-healing property under normal temperature conditions, repeated bonding and strong environmental protection.

Belonging to the technical field of chemical building materials, the invention discloses a perfusion material for a bridge expansion joint transition region, and a preparation method and construction process thereof. The perfusion material consists of three components, A, B and C. The component A consists of epoxy resin, an epoxy active diluent, a superfine waste rubber powder, an antifoaming agent and a dispersing agent; the component B consists of a curing agent, a curing agent promoter and a coupling agent; and the component C consists of waste rubber particles, a waste rubber powder and whiskers. The component A and component B are mixed and stirred evenly, and then the component C is added and mixed evenly to obtain the perfusion material. In construction, first a contact surface of a reserved groove of the bridge expansion joint and the perfusion material is coated with a layer of adhesive, and then the perfusion material is poured into reserved groove of the bridge expansion joint. The perfusion material prepared by the invention has high bonding strength, good construction performance, short time before traffic usage, good wear resistance, shock absorption and noise reduction performances, high mechanical properties, excellent impact resistance and durability, and substantial environmental benefits.

The invention belongs to the technical field of road maintenance repairing and relates to an asphalt pavement cold patching material available for quick opening of traffic and a preparation method thereof; the cold patching material comprises component A, component B and component C; the component A comprises, by weight, 100 parts of limestone mineral material, and 3-5 parts of cement; the component B comprises, by weight, 100 parts of emulsified asphalt, and 40-60 parts of self-emulsified waterborne epoxy resin; the component C comprises, by weight, 100 parts of waterborne epoxy curing agent, and 30-50 parts of an accelerant. Compared with the prior art, the asphalt pavement cold patching material and the preparation method thereof have the advantages that early strength of waterborne epoxy-modified emulsified asphalt mixture can be improved to shorten the time to open the traffic; the material has good water solubility, the preparation process is simple, the preparation conditions are mild, construction is convenient and quick, skilled personnel and special equipment are not required, the material has good low-temperature operability and workability, and is free of volatile solvents, friendly to the construction environment, capable of patching a pavement quickly and good for environmental protection.

The invention discloses an anti-rutting pavement structure, which is characterized in that it comprises a semi-rigid base layer, an SBS emulsified asphalt bonding layer, a type II latex cement mortar poured asphalt concrete lower layer, and a type I latex Cement mortar poured asphalt concrete middle course and high viscosity modified asphalt SMA‑13 concrete surface course. Compared with the prior art, the present invention improves the phenomenon that the middle and lower layers of the semi-rigid base pavement contribute greatly to rutting under the condition of high temperature and heavy load. It has the ability to coordinate with the overall deformation of the base, and the construction maintenance period is short, the opening time for traffic is fast, and the economic performance is excellent.

The invention belongs to the technical field of chemical building materials, and particularly relates to an environment-friendly freeze-thaw-resistant permeable pavement material and a preparation method thereof. The pavement material comprises a component A, a component B and a component C; the component A comprises, by mass, 4-6 parts of stones, 3-5 parts of waste concrete particles and 1-2 parts of rubber particles; the component B comprises, by mass, 8.3-9.3 parts of epoxy resin, 1-2 parts of flexibilizer, 0.1 part of thixotropic agent, 0.1 part of dispersing agent, 0.1 part of antifoaming agent, 0.2 part of pigment, 0.1 part of antioxidant and 0.1 part of antioxidant additive; the component C comprises, by mass, 9.8 parts of curing agent, 0.1 part of curing accelerator and 0.1 part of coupling reagent. Compared with the prior art, the material has the advantages of environmental protection, high strength, freeze-thaw resistance, good durability, skid resistance, noise reduction, shock absorption, bright color, difficulty in fading, convenience in construction, short open traffic time.