32results about How to "Improved anti-rutting" patented technology

The invention discloses an asphalt road, and belongs to the field of roads. The asphalt road comprises a roadbed, a subgrade and a road surface. The subgrade is arranged in the roadbed and is provided with a horizontal layered structure. The subgrade is provided with a first mixed slag layer, a rubble layer, a second mixed slag layer and a concrete layer from bottom to top, and a geogrid and low-voltage shielded wires are arranged in the second mixed slag layer. A plurality of solar photovoltaic modules are arranged in the middle of the road surface in the road extension direction, and the solar photovoltaic modules are connected with a photovoltaic inverter through the low-voltage shielded wires. The asphalt road has the characteristics of being high in flatness, capable of avoiding the circumstances of insufficient partial compaction degrees, serious temperature segregation and the like, good in road surface temperature sensing property, good in elasticity and ageing-resistant performance, not prone to melting or flowing at high temperatures, good in toughness and not likely to be cracked at low temperatures, capable of meeting the using requirements of high-grade roads, and capable of fully utilizing high temperatures of the road surface to conduct solar power generation.

The invention relates to a heating system for epoxy asphalt steel bridge deck pavement and a pavement method. The heating system can be used for controlling the operation temperature in the epoxy asphalt steel bridge deck pavement process, thereby shortening the curing time of epoxy asphalt, further greatly shortening a construction period and reducing the maintenance time before the opening to traffic. Simultaneously, the invention provides a pavement method using the heating system for epoxy asphalt steel bridge deck pavement; and the pavement method can enable the epoxy asphalt steel bridge deck pavement to be constructed in winter and can also be adopted in summer when fast curing is needed.

The invention discloses warm mixed epoxy asphalt. The product comprises a warm mixed asphalt, an epoxy resin composition and a curing agent. The warm mixed asphalt comprises a warm mixing agent and matrix asphalt. The warm mixing agent is prepared by performing a sweating process by taking a byproduct polyethylene wax as a raw material. In the sweating process, oil soluble organic matters capable of decomposed to generate gas are pre-added into the byproduct polyethylene wax raw material, and micro-bubbles are formed in a wax layer by means of gas generated by the byproduct polyethylene wax which is heated, so that a liquid component is quickly discharged and separated; meanwhile, in the sweating process, the liquid component is carried out through the wax layer by means of the air flow to separate the solid component from the liquid component in a forced manner, so that the low molecular weight components in the raw material are removed more effectively. The warm mixing agent used in the product not only can play a warm mixing role on the asphalt, but also can improve the thermal stability of the asphalt, improve the anti-thermal aging property, reduce the fusing temperature of the asphalt and the viscosity at the temperature, and reduce the generation amount of harmful gas.

The invention discloses a road asphalt additive and a preparation method thereof. The road asphalt additive comprises the following components by weight: 6-10 parts of modified waste rubber powder, 45-50 parts of waste PVC film particles, 1-3 parts of compatibilizer, 6-10 parts of rock asphalt, 8-12 parts of horse Polyethylene wax grafted with maleic anhydride; waste PVC film particles are made by the following method: crush clean PVC film into film blocks with a length and width of 7-12mm, and then mix with maleic anhydride grafted PE copolymer, nitrile rubber Mix with mica powder according to the ratio, extrude and granulate. The road asphalt additive of the invention has the advantages of improving the rutting resistance and fatigue cracking resistance of the asphalt pavement, prolonging the service life of the road, making the asphalt pavement absorb automobile tail gas and reducing air pollution.

The invention discloses a warm-mixing epoxy asphalt mixture and a preparation method thereof. The warm-mixing epoxy asphalt mixture comprises the following components by weight percentage: 4.0-6.0% of warm-mixing epoxy asphalt, 1.0-3.0% of ore powder, and 91.0-95% of an aggregate; wherein, the warm-mixing epoxy asphalt mixture comprises a component A, a component B, and a component C, wherein the component A is warm-mixing asphalt, the warm-mixing asphalt comprises a warm-mixing agent and a matrix asphalt; the component B is an epoxy resin composition; and the component C is a curing agent. The preparation method of the warm-mixing agent comprises the following steps: under the effect of a catalyst, high-molecular alkane is reacted with a halogen simple substance to obtain an intermediate; aromatic hydrocarbons oil and a complex are uniformly mixed to obtain an aromatic hydrocarbons complexation component under effect of a second catalyst; and the aromatic hydrocarbons complexation component and the intermediate are reacted and slaked to obtain the warm-mixing agent. The epoxy asphalt mixture has good Marshall stabilization degree, rut resistance and water damage resistance capabilities.

The invention discloses a preparation technology of a warm mix asphalt mixture. The warm mix asphalt mixture comprises 88-93 parts of mineral aggregate, 6-10 parts of modified warm mix asphalt and 1-2parts of fibers, wherein the modified warm mix asphalt comprises the following ingredients in parts by weight: 66-76 parts of matrix asphalt, 7.5-10 parts of rubber cracking oil, 6-8 parts of plasticcracking wax, 6-7 parts of alkene oil, 2-4 parts of a polymer, 2-4 parts of fatty acid and 0.5-1 part of an additive. The preparation technology comprises the steps of feeding the mineral aggregate heated to 120-140 DEG C into a blending cylinder, adding heated asphalt at 105-125 DEG C and a warm mix asphalt modifier, performing stirring 2-4 min, feeding the fibers, and performing blending for 0.5-1 min to form the warm mix asphalt mixture. The performance, such as water damage resistance, rut resistance and fatigue resistance, of the warm mix asphalt mixture are improved; when the warm mix asphalt mixture is applied to road construction, a service life of a road is effectively prolonged; and the preparation technology is simple and low in cost, has great economic and social benefits andmeets the characteristics of green ecology and sustainable development.

The invention relates to a warm-mix asphalt additive and a preparation method thereof. The additive comprises the following components in percentage by weight: 87 to 98 percent of chemical modification latex, 0.5 to 12 percent of lubricative and peeling resistant cation surfactant and 0.1 to 2.0 percent of acid. The method comprises the following steps of: heating the chemical modification latex to the temperature of between 40 and 80 DEG C with stirring, and dripping 0.1 to 0.5 percent of acid slowly; adding the lubricative and peeling resistant cation surfactant, stirring fully, and dispersing uniformly; and continuing to drip 0.1 to 1.5 percent of acid slowly, stirring uniformly, keeping the temperature of between 40 and 80 DEG C and storing for later use. By the warm-mix asphalt additive and the preparation method, the viscosity of asphalt binders during mixing can be reduced effectively, the reduction performance of asphalt cements and adhesivity between the asphalt cements and aggregates can be improved, the water damage resistance and durability of warm-mix asphalt mixtures can be improved, the tensile strength of asphalt can be improved, and the rutting resistance, fatigueresistance and low temperature resistance of the warm-mix asphalt mixtures can be enhanced.

The invention relates to a warm-mixed asphalt mixture and a preparation method thereof. The warm-mixed asphalt mixture is mainly applied to new construction and maintenance of high-grade roads and common roads, and is particularly suitable for cities, parks, tunnels and the like with high environmentally-friendly requirements. The warm-mixed asphalt mixture mainly comprises about 92.4-96.5 percent by weight of mineral, about 3.4-7.5 percent by weight of asphalt cement and 0.05-1.0 percent by weight of chemical modified adhesive cement. The preparation method comprises the following steps of: simultaneously pumping the chemical modified adhesive cement and the hot asphalt cement to the spraying port of a foam generator, fully mixing to generate a foam-containing hot asphalt mixture, spraying the foam-containing hot asphalt mixture into a mixing pan, and further mixing the foam-containing hot asphalt mixture and the hot mineral to form the warm-mixed asphalt mixture. The chemical modified adhesive cement can effectively reduce the mixing, spreading and rolling temperature of the asphalt mixture, and solves the problems of environmental pollution, high energy consumption, asphalt ageing regression and the like. By selecting high-concentration cationic chemical modified latex as a matrix stock of the chemical modified adhesive cement and simultaneously matching a proper proportionof cationic surfactant with lubricating effect and peeling resistance, the influence of the conventional warm-mixed asphalt additive on poor reducing performance and poor adhesive performance of the asphalt cement is solved, and the properties of the warm-mixed asphalt mixture such as water damage resistance, rutting resistance, fatigue resistance, low temperature resistance and the like are improved.

The invention discloses an asphalt road paving method, and belongs to the field of road paving methods. The asphalt road paving method disclosed by the invention comprises five steps: a first step of performing measurement and alignment, comprising the steps of re-measuring a guiding line, a center line and a benchmark, performing cross section inspection and supplementary measurement, performing staking out in construction before the start of the construction, staking out specific locations such as the edges of a roadbed, slope openings, slope toes, side ditch berms and soil pits, indicating contours of the specific locations, clearing away trees, weeds, shrubs and the like in the range of a route land, and digging the roadbed; and other four steps. The asphalt road paving method disclosed by the invention has the characteristics of being high in flatness, free from situations such as insufficient local degree of compaction and serious temperature segregation, good in road surface temperature sensing performance, good in elasticity and aging resistance, not easy to melt and flow at high temperature, and good in toughness and not easy to break at low temperature, the use requirements of high-level roads can be met, and besides, the high temperature of a road surface can be fully utilized for solar power generation.