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 technical field of high-speed railway ballastless track repairing and provides a high-speed railway ballastless track line rapid repairing method in order to solve the problem that at present, a complete set of effective, rapid and systematic repairing method is not available for existing high-speed railway ballastless track lines. The high-speed railway ballastless track line rapid repairing method comprises the steps of line-to-line physical isolator installation, track sawing and moving, integral concrete track bed cutting and transporting, subgrade bed surface layer graded broken stone measurement leveling, supporting layer construction, track bed slab construction, steel track welding locking, track fine adjustment, road shoulder waterproof and drainage engineering and related engineering installation; line-to-line physical isolator demolition, line-to-line sealing layer and related engineering recovery, steel track polishing derusting, line-to-line waterproof construction, and drainage side ditch and side ditch platform recovery construction. Implementation is easy, and the high-speed driving requirement is met after repairing; the repairing and reinforcement effect is good, and the situation that a problem happens again to a ballastless track is effectively prevented; and the high-speed railway ballastless track is efficiently, rapidly, completely, systematically and comprehensively repaired and maintained, so that the safety of railway operation and the long-term durability of the structure of the ballastless track are ensured.

The invention discloses a method for repairing and reinforcing an open joint of a filling layer of a slab ballastless track and belongs to the technical field of high speed railway engineering maintenance. The method comprises the following steps of drilling and anchoring a slab of the track with the open joint; grouting and repairing an open joint area of the filling layer. The method solves the problem that an effective method for repairing the open joint of the filling layer is lacked in the prior art; the method is simple and quick in procedures and easy to implement, can effectively eliminate the open joint of the filling layer of the slab ballastless track structure, ensures that the requirement on high speed running is met after repair, can be used for repairing and reinforcing the open joint of the filling layer of the slab ballastless track of a high speed railway, and can also be used for repairing and reinforcing other projects with layered structures.

The invention relates to a method for rapidly repairing cement emulsified asphalt mortar interface connection damage of a unit slab ballastless track; the method mainly comprises the steps of cleaning, sealing, setting of grouting openings, interface connection damage grouting and edging treatment; the specific steps are as follows: firstly, cleaning dust and impurities around a mortar interface connection damage; secondly sealing the interface connection damage area, setting the grouting openings and placing a dial indicator at four corners of a track slab in a to-be-repaired area; thirdly, connecting a dual-component self-mixing grouting machine with a pressure grouting hose, and injecting a dual-component grouting material to the grouting openings in sequence; after the mortar comes out of a grouting opening having the spacing of more than the width of the track slab with the next grouting openings, turning to the next grouting opening to grout continuously till the whole cement emulsified asphalt mortar seam area is fully grouted; and finally, cutting the grouting hose, polishing sealed materials to finish the repairing. The method has the characteristics of simple and rapid process, high repairing efficiency and capability of realizing rapid repairing within skylight time and is applicable to repairing the cement emulsified asphalt mortar seams of the unit slab ballastless track.

The invention relates to a high-toughness epoxy resin grouting material for rapid repair of a concrete structure joint. The high-toughness epoxy resin grouting material is composed of the following raw materials: a component A and a component B, wherein the component A comprises: glycidyl ether epoxy resin, glycidyl ether epoxy resin, softened modified epoxy resin, epoxy-terminated liquid nitrilebutadiene rubber and a reactive diluent; and the component B comprises: a modified amine curing agent, polymercaptan, a tertiary amine accelerator, amino-terminated liquid nitrile butadiene rubber, anorganic silicon defoamer and an anti-aging agent, and the mass ratio of the component A to the component B is 1:0.2-1. The epoxy resin grouting material has low viscosity, is convenient for groutingconstruction, has good applicability to a humid basal plane, and has fast hardening speed, high early mechanical strength and bonding strength, excellent flexibility, and excellent damp-heat aging resistance and fatigue resistance, and can achieve rapid repair and reinforcement on a concrete structure joint without affecting normal traffic.

The invention discloses an end thorn anchor force enhancing structure of a ballastless track and a construction method. The method comprises the following steps of measuring and monitoring a track elevation and a line center line; performing shield excavation at a bottom of a main end thorn of a n-shaped end thorn; forming grouting holes in the two sides and the bottom of a pipe wall of a shield structure, injecting grout into a roadbed AB-group filler through a floral pipe or a sleeve valve pipe, and forming the shield structure reinforced in a peripheral dendritic mode; vertically punching the top of the pipe wall of the shield structure upwards into the main end thorn, injecting adhesives into the holes, planting reinforcing bars in the holes, and connecting the shield structure with the main end thorn; pouring lightweight aggregate concrete into a cavity of the shield structure so that the reinforced shield structure and the existing end thorn are firmly combined into a whole, andforming a reinforced end thorn structure; and removing a template, repairing an off-line cable trough, and recovering a slope. By strengthening a height and an anchoring range of the main end thorn ofthe n-shaped end thorn, an anchoring force of the end thorn is remarkably increased; and purposes of reducing longitudinal displacement of the end thorn along a line and stabilizing the track structure of a road-bridge transition section are achieved.

The invention discloses an end thorn area reinforcing structure and a construction method. The end thorn area reinforcing structure comprises n-shaped end thorns; a first shield steel wall is horizontally arranged below main end thorns of the n-shaped end thorns, and the top of the first shield steel wall is connected with bottoms of the main end thorns through implanted reinforcing ribs; a secondshield steel wall and a third shield steel wall are arranged on a left side and a right side of the first shield steel wall, and reinforcing meshes are woven in the first shield steel wall, the second shield steel wall and the third shield steel wall and permeation-expansion type self-compacting concrete is filled; and the reinforcing meshes and the reinforcing ribs in the first shield steel wall, the second shield steel wall and the third shield steel wall are connected into a whole. According to the end thorn area reinforcing structure, the n-shaped end thorns are connected with the first shield steel wall, the second shield steel wall and the third shield steel wall through the reinforcing ribs, the reinforcing meshes and the permeation-expansion type self-compacting concrete, the original n-shaped end thorns are changed into inverted T-shaped end thorns, a track structure and a roadbed are well fixed together, and a reinforcing effect is better achieved.

The invention belongs to the technical field of pavement materials in highway engineering and particularly relates to matrix asphalt mixture gradation applicable to semi-flexible asphalt roads. Matrix asphalt mixture aggregates are prepared to form matrix asphalt mixtures being 2.8%, 3.2%, 3.6% and 4.0% in asphalt-aggregate ratio respectively; stability or splitting strength are taken as indexes for measurement of stability and splitting strength of the matrix asphalt mixtures under different asphalt-aggregate ratios; a relation curve of between the asphalt-aggregate ratios and the stability and splitting strength of the matrix asphalt mixtures is further drawn, and the asphalt-aggregate ratio at a peak is taken as an optimal asphalt-aggregate ratio of the matrix asphalt mixtures. The matrix asphalt mixture gradation applicable to the semi-flexible asphalt roads has the advantage of high stability.