30results about How to "Full of perfusion" patented technology

The invention discloses polymer cement mortar for a slab ballastless track of a high-speed railway. The polymer cement mortar a comprises a dry raw material and a liquid raw material, wherein the dry raw material comprises a binding material component, an elastic adjusting component, an expanding component, an internal curing component, an aggregate component and a coagulation adjusting component; the liquid raw material comprises a polymer emulsion, a water reducing agent, a defoaming agent, an air entraining agent and water; and the weight ratio of the dry raw material to the liquid raw material is 100:(15-25), and the dry raw material and the liquid raw material are uniformly mixed in a proportion to prepare the polymer cement mortar. The polymer cement mortar has the advantages of controllable coagulation time, high adhering strength, adjustable elastic modulus, good elasticity and toughness, high durability and the like, and is capable of replacing cement emulsified asphalt mortar to be applied to a packing material of the slab ballastless track or can be used as a quick repairing material of a filling layer of cement emulsified asphalt mortar.

The invention belongs to the field of road and bridge engineering materials and road engineering application, and in particular relates to the field of grouting materials applied to semi-flexible pavements of rapid open traffic. The cement gel mortar comprises the following raw materials in parts by weight: 95-105 parts of cement, 20-100 parts of inorganic filler, 0-100 parts of sand, 0.5-10 parts of water reducing agent, 0.02-10 parts of coagulant, 0.05-10 parts of high-temperature thixotropic agent and 60-140 parts of water, wherein the high-temperature thixotropic agent consists of sodium bentonite, hexadecyl trimethyl ammonium bromide and octadecylamine; the coagulant is a lithium compound; the cement is sulfate aluminium cement. The cement gel mortar provided by the invention has the characteristic of high early strength high temperature resistance, and is particularly applicable to manufacture of semi-flexible pavements.

Asphalt pavement crack inbuilt-enveloping material and a preparation process are disclosed, wherein the material is prepared by 5%-60% asphaltum, 10%-25% rubber powder, 15%-25% bulking agent, 2%-14% accelerating agent and 1%-3% compatibilizer. The preparation process comprises adding asphaltum in an autoclave, heating up to the temperature of 140-160 DEG C, then adding rubber powder, compatibilizer and accelerating agent, stirring for 20 minutes with 300-1500 rotation / min, elevating the temperature to 170-220 DEG C, shearing 30-45 minutes with a high speed shearer, then adding bulking agent, developing 45-90 minutes in a storage tank, then finally preparing the product of the invention. The product of the invention is used on the crack inbuilt-enveloping, and has large adhesive force withcracks, can effectively prevent from generating new cracks, has favorable flow, is easy to be injected in cracks, has excellent affinity with cracks, and can be fully affused, and has large adhesive surface. The asphalt pavement crack inbuilt-enveloping material is suitable to be used to remand asphalt pavement cracks.

The invention discloses an emulsified asphalt and a preparation method thereof. A formula of the emulsified asphalt comprises asphalt, a cationic emulsifier, an anionic emulsifier, a thickener, a stabilizer, a water reducing agent and water. According to the invention, the water reducing agent is added to asphalt emulsion as a component for not only playing the role of the reducing agent itself, reducing operation steps during construction, but also for cooperating with the cationic surfactant and the anionic surfactant, thus obviously improving sieve residual amount, storage stability and especially indexes of cement miscibility of the emulsified asphalt. The emulsified asphalt provided by the invention is used for cement asphalt mortar pouring of a plate-type ballastless track during construction of a high-speed railway.

The invention discloses a ballastless track end thorn anchor force enhancement structure and a construction method, which measure and monitor the track elevation and the line center line; perform shield excavation at the bottom of the main end thorn of the Π-shaped end thorn; There are grouting holes on both sides and bottom of the pipe wall, inject grout into the filler of group AB of the subgrade through flower pipes or sleeve valve pipes, and form a shield structure with dendritic reinforcement around the periphery; holes are drilled vertically upward at the top of the pipe wall of the shield structure To the main end thorns, inject adhesive into the hole and plant high-strength steel bars to connect the shield structure and the main end thorns; pour light aggregate concrete into the cavity of the shield structure to make the reinforced shield structure and the existing end thorns It is firmly integrated to form a reinforced end spine structure; the formwork is removed, the cable trough outside the line is repaired, and the slope is restored. The invention significantly increases the anchoring force of the end thorns by strengthening the height of the main thorns and the anchoring range of the Π-shaped end thorns, and achieves the purpose of reducing the longitudinal displacement of the end thorns along the line and stabilizing the track structure of the transition section of the road and bridge.

The invention discloses modified emulsified asphalt and a preparation method thereof. The modified emulsified asphalt comprises the following components by weight: 55%-65% of asphalt, 0.3%-1.5% of cationic emulsifiers, 0.3%-1.5% of anionic emulsifiers, 0.05%-0.15% of stabilizing agents, 0.01%-0.05% of thickening agents, 0.1%-0.5% of water reducers, 0.8%-3.5% of alcohol, 1%-4% of polymer latex, and 30%-35% of water. The modified emulsified asphalt of the invention is good in miscibility with cement, good in storage stability, and low in oversize residual amount, and also has the advantages of freezing resistance, no bleeding, good flexibility, and good caking property. The modified emulsified asphalt of the invention is especially applicable to cement injection asphalt mortar for preparing plate-type ballastless tracks in high speed railway building.