61results about How to "Reduce rutting" patented technology

The invention discloses a preparation method of an environment-friendly asphalt pavement anti-rut agent and an application thereof. The method comprises the following steps of: mixing and stirring 45-80 percent of polyethylene and 15-30 percent of petroleum resin derived from 'plastic waste', 5-15 percent of polymethyl methacrylate, 5-15 percent of an asphalt material and 0-10 percent of an inorganic mineral filling material at a high speed; and extruding at a high temperature to prepare the environment-friendly asphalt pavement anti-rut agent. Due to the adoption of the environment-friendly asphalt pavement anti-rut agent, the performance of an asphalt pavement is enhanced, the service life of the pavement is prolonged, 'white waste' is recycled, and environmental pollution is lowered. Polyethylene serving as a major component is either or both of industrial production low-density polyethylene and industrial recycled waste polyethylene; the industrial recovered waste polyethylene is recovered polyethylene or regenerated low-pressure polyethylene or regenerated PE (Polyethylene); the molecular weight of the petroleum resin is 300-3,000; the molecular weight of the polymethyl methacrylate is 80,000-120,000; the asphalt material is one or more of natural asphalt, coal tar asphalt and petroleum asphalt; and the inorganic mineral filling material is one or over two of calcium carbonate of 500-800 meshes, talc powder, quartz sand, glass hollow microspheres and kaolin.

The present invention proposes a cold-mix phase-change heat-storage asphalt mixture, which is characterized in that it is mixed at room temperature by aggregates, porous base phase-change heat-storage particles, fillers, water, emulsified asphalt or modified emulsified asphalt, each Mass ratio of raw materials Aggregate: porous base phase change heat storage particles: filler: water: emulsified asphalt or modified emulsified asphalt = 100: 20~100: 1~3: 2~4: 5~8. Porous-based phase-change heat storage particles are based on porous igneous rock aggregates. Under vacuum conditions, organic solid-liquid phase-change materials are adsorbed in the pore structure of the matrix, and the surface is coated with a thermosetting resin film layer containing thermally conductive fillers by immersion method. , It is obtained by curing at room temperature for 2-4 days, its phase transition temperature is 40-70°C, its latent heat of phase transition is 20-60J / g, and its mechanical properties are good. The preparation process of the invention is simple, energy-saving and environment-friendly, and has a good effect of reducing road surface temperature.

The invention discloses a method for making modified asphalt using waste plastics, comprising the following process steps: 1) various waste plastics are collected, sorted, washed and then dehydrated and grinded; 2) the grinded waste plastics are melted by heating up, and then processed into waste plastic grains after cooling; 3) the waste plastic grains are liquefied by high temperature heating and then cooled, the waste plastic modifying agent is obtained; 4) base asphalt is healed to be softened, then the waste plastic modifying agent obtained during step 3) and the base asphalt are melted to be immixed; 5) the mixture obtained during the step 4) is melted to expanded and sheared, the manufacture of the modified asphalt is finished; the method for making modified asphalt using waste plastics has the advantages that: the soften point of the asphalt is increased ten to fifteen DEG C, the price is low, the waste domestic plastic products are changed into valuables, and has the advantages of good technical performances and low price and other economic technique characterizes.

The invention provides a modified asphalt composition and a preparation method thereof. The modified asphalt composition comprises, by weight, 87.5% to 98.9% of base asphalt, 1% to 10% of a modifier and 0.1% to 2.5% of a gelatinizing agent (a structure improver). The preparation method comprises the following steps: uniformly dispersing the modifier into the base asphalt at a temperature of 150 to 260 DEG C by using equipment like an ordinary agitator, a high speed shearing machine or a colloid mill to prepare the modified asphalt composition; and adding the gelatinizing agent to allow a sol-gel type colloid structure of asphalt to be converted into a gel type colloid structure and to allow a stable colloid structure of asphalt to be formed. According to the invention, the preparation method for the modified asphalt composition is simple; and the prepared modified asphalt composition has a high softening point, high viscosity, a high penetration index, excellent high and low temperature performance, excellent ageing resistance, small temperature sensitivity and the like, can reduce occurrence of damages like tracks and upheaval on a pavement and prolong a maintenance period of the pavement and is applicable to construction of high-grade highways.