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

The invention relates to a method for rapidly repairing an open joint of cement-emulsified asphalt mortar of a longitudinally-connected-plate type ballastless track. The method mainly includes the working procedures of open joint cleaning, grouting opening forming, open joint closing, open joint grouting, edge cleaning and the like, and particularly includes the steps that dust and impurities on the periphery of the open joint of the cement-emulsified asphalt mortar are removed, a grouting opening is formed in the open joint, then an open joint area is closed through rapidly-solidified joint closing materials, after the joint closing materials are solidified, double-component polyurethane grouting materials are injected into the open joint by a double-component self-mixing grouting machine through the grouting opening, after open joint grouting is completed, the grouting opening and the redundant joint closing materials are removed, and repairing work is completed. The method has the advantages of being high in construction efficiency, good in repairing effect, capable of achieving rapid repairing within the skylight time and the like, is suitable for repairing the open joint of the cement-emulsified asphalt mortar of the longitudinally-connected-plate type ballastless track and is also suitable for rapidly repairing an open joint of a concrete structure of a layered structure.

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 discloses cement asphalt mortar and a preparation method thereof. The cement asphalt mortar comprises emulsified asphalt, cement, fine sand, an expanding agent, aluminium powder, and water. The formula of the emulsified asphalt comprises asphalt, an anionic emulsifier, a cationic emulsifier, a stabilizing agent, a thickening agent, a water reducer, an antifoaming agent, alcohol, polymer latex and water. The cement asphalt mortar of the invention adopts specially prepared emulsified asphalt; when the emulsified asphalt is mixed with dry materials of cement, dry sand, and the like, the water reducer, the antifoaming agent, and the polymer latex are easy to disperse uniformly, and the contact with the dry materials is full; the water reduction effect is significant; the bleeding phenomenon of the CA mortar after pouring is effectively prevented; the workability of the emulsified asphalt with cement and fine sand is improved; with the synergistic effect of the alcohol, the freezing resistance of the CA mortar is improved; big bubbles are eliminated effectively; the CA mortar is compact and uniform in texture after molding, and has the characteristic of good weatherability. The cement asphalt mortar of the invention is especially suitable for being poured below a track plate during high speed railway building and used as a damping buffer layer.

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.

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.

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 a method for preparing emulsified asphalt slurry. The emulsified asphalt slurry is formed by mixing and stirring emulsified asphalt, artificial sand, water, 40-50% acrylic emulsion, sweller, air entraining agent, defoaming agent and aluminum powder; the emulsified asphalt is formed by mixing emulsified asphalt 1# intermediate product and emulsified asphalt 2# intermediate product, adding stabilizer gas silica and evenly mixing; the emulsified asphalt 1# intermediate product is formed by mixing and grinding 1# emusifier prepared by adding water to asphalt, lignose, alkylamine, gas phase silica and polyoxyethylene derivative; and the emulsified asphalt 2# intermediate product is formed by mixing and grinding 2# emusifier prepared by adding water to asphalt, volcanic type amargosite. The emulsified asphalt slurry of the invention is high in strength, plump in pouring, simple in preparation method, low in raw material cost and perfect in construction performance.

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 an anti-freezing emulsified asphalt and a preparation method thereof. A formula of the emulsified asphalt comprises asphalt, an anionic emulsifier, a cationic emulsifier, a thickener, a stabilizer, a water reducing agent, alcohol and water. The method provided by the invention comprises steps of: dissolving the water reducing agent and the thickener in alcohol at room temperature to prepare a paste, and adding a defoaming agent into the paste; and then participating the paste in the emulsion as a whole. The paste is combined with the cationic emulsifier and the anionic emulsifier emulsifier, so as to reduce usage amount and cost of emulsifier, and obviously improve sieve residue, storage stability, cement miscibility and frost resistance of the emulsified asphalt.

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 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 relates to a building material, and a preparation method and a construction method of the building material. A cement asphalt mortar used for high temperature complicated work condition is prepared from raw materials including cement, fine aggregate, expansion admixture, powdered aluminum, emulsified asphalt with high cement adaptability, water, high-efficiency set-retarding type water-reducer and foam suppressor; the weight part of each component is as follows: cement 100 parts, fine aggregate 135-175 parts, expansion admixture 10-15 parts, powdered aluminum 0.002-0.005 parts, emulsified asphalt 40-50 parts, water 20-40 parts, water-reducer 0.8-1.2 parts and foam suppressor 0.03-0.08 part; pre-wetting technology and grouting technology matched with high temperature weather are used; the working property of the mortar is good at high temperature of 30-40 degrees centigrade, the construction process is accurately controlled, the mortar grouting is full, the quality defects such as through hole and large air bubble and cavity are inexistent after de-molding; the size of the surface air bubble area is less than 1%, and the 1-3cm air bubble area is less than 0.05%. The invention solves the problems of too large loss of working property of cement asphalt mortar at high temperature and difficulty of mortar grouting during construction.

The invention discloses an anti-freezing cement asphalt mortar and a preparation method thereof. The cement asphalt mortar comprises emulsified asphalt, cement, fine sand, an expansive agent, an aluminite powder and water. A formula of the emulsified asphalt comprises asphalt, an anionic emulsifier, a cationic emulsifier, a thickener, a stabilizer, a water reducing agent, a defoaming agent, alcohol and water. The cement asphalt mortar provided by the invention employs special emulsified asphalt; and when the cement asphalt mortar is mixed with dry material such as cement and sand, the water reducing agent and the defoaming agent are easily dispersed to fully contact with the dry material, thus realizing obvious water reducing effect, effectively avoiding bleeding phenomenon after pouring of CA mortar, and improving workability of the emulsified asphalt with cement and fine sand; and synergistic effect of alcohol improves anti-freezing performance of the CA mortar, effectively eliminates large bubbles, and realizes dense and uniform texture after forming of the CA mortar. The cement asphalt mortar provided by the invention is particularly suitable for perfusion under track plate as a buffer layer in construction of high-speed railway.

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.

The invention discloses a cement asphalt mortar and a preparation method thereof. The cement asphalt mortar includes emulsified asphalt, cement, fine sand, expansion agent, aluminum powder and water. The formula of emulsified asphalt includes asphalt, cationic emulsifier, anionic emulsifier, thickener, stabilizer, water reducer, defoamer, and water. The cement asphalt mortar of the present invention adopts special emulsified asphalt. When it is mixed with dry materials such as cement and fine sand, the water reducer and defoamer are easily dispersed evenly, fully contacted with dry materials, and the water reducing effect is obvious. At the same time, it can effectively avoid the bleeding phenomenon after CA mortar pouring, improve the workability of emulsified asphalt, cement and fine sand, improve the fluidity of CA mortar, and effectively eliminate large air bubbles, making CA mortar After molding, the texture is dense and uniform. The cement asphalt mortar of the present invention is particularly suitable for pouring under track slabs as a shock-absorbing buffer layer when building high-speed railways.