10 results about "Cement mortar" patented technology

The invention discloses a method for fracturing a coal seam by employing high-pressure gas. The method comprises the following steps: (1) tipsily drilling from a lower floor roadway of the coal seam to an upper coal seam; (2) inserting three pipes into a drill hole, and injecting polyurethane which is 20-50cm in thickness into the drill hole; (3) injecting cement mortar into the drill hole from a first grouting pipe, and shutting off a first which is arranged at the rear end of the first grouting pipe until the cement mortar overflows from a second grouting pipe; (4) injecting plugging mucilage glue containing particulate matters into the drill hole by virtue of the second grouting pipe after 12-24 hours; (5) injecting a high-pressure gas of which the pressure is 30-60MPa into the drill hole through a fracturing extraction pipe. According to the method disclosed by the invention, the plugging mucilage glue containing particulate matters is pressed into a pore fracture of a rock section under the effect of air pressure; the high-pressure gas is plugged by virtue of the mucilage glue; the problem of air leakage of the high-pressure gas in the coal seam fracturing process is effectively solved; the gas pressure of the fractured coal seam reaches the cracking pressure of the coal seam.

The invention discloses a cement mortar. The cement mortar comprises, by mass, 50 to 80% of an electromagnetic wave shielding material, 15 to 45% of cement, 1 to 4% of a filling material, 0 to 0.5% of fiber and 0.1 to 2% of an organic additive. The cement mortar has an electromagnetic wave shielding function and exerts high shielding effect on electromagnetic waves with a frequency of 10 KHz to 18 GHz. The cement mortar provided by the invention has building performance parameters similar to the building performance parameters of common plastering mortar, can be applied to manufacturing of floated coats of interior and exterior walls of a variety of buildings and be smeared by using common construction means, and is convenient to apply and reliable in performance.

The invention discloses a pre-laying waterproof coiled material construction process for welding and adhesive bonding combined construction. The process is used for a construction site of a concave structure. The method comprises the following steps of S1, preparation before construction, wherein a base surface is cleaned, it is ensured that the base surface is clean, flat, firm and free of accumulated water, internal corners are treated with cement mortar, and auxiliary materials, construction machines and tools are prepared; S2, laying of a plane coiled material, wherein the plane coiled material is pre-laid, and long-edge lap joints, short-edge lap joints and lap joint seams are sealed respectively; S3, treatment of the internal corners, wherein the coiled material at the internal corners is cut, and pre-laying and lap joint treatment are performed; S4, laying of a facade coiled material, wherein a facade is subjected to coiled material lap joint treatment and lap joint seat reinforcing treatment; and S5, repair of coiled material damage, wherein damage to the coiled materials are repaired. The pre-laying waterproof coiled material construction process adopts a welding and adhesive bonding combined construction method, and the defects that adhesive bonding of the coiled materials on the construction site during construction is not firm, and water channeling hidden hazards exist are overcome.

The invention belongs to the field of building materials, and provides epoxy resin-containing cement mortar. The cement mortar is prepared from the following raw materials in parts by weight: 30-40 parts of fly ash cement, 10-20 parts of medium sand, 10-20 parts of quartz powder, 15-25 parts of tap water, 1-5 parts of polyurethane, 1-5 parts of a curing agent, 1-5 parts of a water reducing agent and 15-25 parts of two-component epoxy resin, wherein the two-component epoxy resin is prepared from 30-40 parts by weight of liquid A and 60-70 parts by weight of liquid B. Durability of the cement mortar is improved, service life is prolonged, performance is more stable, impact resistance is high, and the cement mortar is wearproof and anticorrosion.

The invention relates to the technical field of building materials and discloses a polymer modified cement mortar steel fabric surface layer reinforcing structure. The polymer modified cement mortar steel fabric surface layer reinforcing structure comprises a reinforced layer; a groove is formed in the middle of the upper surface of the reinforced layer, an adhesion agent coating is fixedly connected with the upper surface of the reinforced layer, a major bearing frame of a steel fabric surface layer is fixedly connected in the groove through pins, and minor bearing frames of the steel fabric surface layer are fixedly connected with the upper surface of the adhesion agent coating; a polymer modified cement mortar coating is fixedly connected between the steel fabric surface layer and the adhesion agent coating. According to the polymer modified cement mortar steel fabric surface layer reinforcing structure, the major bearing frame and the minor bearing frames are installed, the major bearing frame is fixedly connected in the groove trough the pins, the two minor bearing frames are fixedly connected with the two sides of the lower surface of the steel fabric surface layer, and while light weight reinforcing is achieved, stability when the steel fabric surface layer is used is ensured.

The invention provides a method and structure for co-processing waste incineration fly ash underground in a mine. According to the method, anti-pollution and anti-seepage treatment of the mine is used as a first-stage pollution isolation barrier; a secondary dirt isolation barrier is formed through encapsulation treatment; and clay mortar in the treatment sealing layer is used as a third-stage dirt isolation barrier. According to the structure, an underground space of a mine serves as a fly ash disposal space, and a wall impermeable layer is arranged in the fly ash disposal space; a plurality of packaging box body stacks are placed in the fly ash disposal space, and each packaging box body stack is formed by stacking a plurality of packaging box bodies; the encapsulation box body comprises a box body, a chelating agent or a chemical agent fly ash mixture is contained in the box body, and the top of the box body is sealed through a cement mortar layer; a disposal sealing layer is arranged at the outlet position of the fly ash disposal space, and the fly ash disposal space among the multiple packaging box body stacks is filled with clay mortar. The problems that ground land resources are short and waste incineration fly ash cannot be disposed can be effectively relieved. And underground idle space formed after coal mining can be effectively utilized.

The invention relates to the technical field of building decoration, in particular to a ground fine leveling technology. The ground fine leveling technology comprises the following steps that horizontal lines with the same height are popped up on the four walls, close to the ground, of a room; a first drawing pin is pressed on the horizontal line of one wall, and a fine line is bound on the firstdrawing pin; cement mortar is laid in a right-angle triangular region at one corner of the room firstly; the cement mortar is embedded into a plurality of tile strips before the cement mortar is solidified, a smooth glaze surface of each tile strip faces upwards and is not stained, and the tile strips as much as possible are located on the same straight line; and before the cement mortar is solidified, one end of the fine line is pulled to move along the horizontal lines of the three walls without fixing the first drawing pin, meanwhile, the positions of the tile strips are manually adjusted so that the fine line can completely scratch the smooth glaze surfaces of all tile strips and then waiting for the solidification of the cement mortar. According to the ground fine leveling technology,the step of cake plastering is canceled, a replacement method which is simpler and easier to operate and high in efficiency is adopted, so that the construction time of ground fine leveling is greatly reduced.