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35results about How to "Make sure to fill" patented technology

Detection method and detection structure for grouting density of prefabricated part

The invention discloses a detection method and a detection structure for grouting density of prefabricated parts. The detection method comprises the following steps: providing at least one first prefabricated part and a second prefabricated part, preserving a grouting construction gap between the first prefabricated part and the second prefabricated part, and forming opposite grouting interfaces between the first prefabricated part and the second prefabricated part; arranging prefabrication testing points on the grouting interfaces of the first prefabricated part or / and the second prefabricated part, and connecting the prefabrication testing points with a signal receiver; grouting size into the grouting construction gap; when the size in the grouting construction gap triggers the prefabrication testing points, transmitting signals to the signal receivers from the prefabrication testing points; based on the signals transmitted from the prefabrication testing points, judging the grouting density degree of the grouting construction gap. As the prefabrication testing points are arranged on the grouting interfaces, the density degree of size grouting in the grouting construction gap can be detected, the size can be completely filled without bubble, and the grouting connection quality between the prefabricated parts can be ensured.
Owner:CHINA CONSTR EIGHT ENG DIV CORP LTD

Chloride ion concentration detection device of reinforced concrete structure and nondestructive testing method thereof

The invention discloses a chloride ion concentration detection device of a reinforced concrete structure and a nondestructive testing method thereof. The device comprises detection single units (1) and a direct current power supply, wherein a stainless steel plate (3) is arranged in each detection single unit; a cover plate (2) of each detection single unit, a water-proof protective housing (1) and the surface of the reinforced concrete structure (4) form a closed cavity; electrolyte solution is injected into the cavity; the stainless steel plate (3) is also positioned in the cavity; a negative electrode of the direct current power supply is connected with reinforcement (4.1) of the reinforced concrete structure (4), and a positive electrode of the direct current power supply is connected with the stainless steel plate (3) of each detection single unit through a wire; the key point of the method is that the chlorine ion concentrations at different time points correspond to the chlorine ion concentrations of different depths of the reinforced concrete structure (4). According to the device and the method, the chlorine ion concentrations of different depths of the reinforced concrete structure (4) can be effectively detected, the detection process is convenient, and structural damage is not caused.
Owner:浙大宁波理工学院

Low-cost long-cycle graphite negative electrode material, preparation method and application thereof

The invention provides a low-cost long-cycle graphite negative electrode material, a preparation method and application thereof. In the preparation method, the temperature of a forming press is controlled to be 40-100 DEG C higher than the melting point of asphalt, so that the asphalt is kept in a liquid state, the asphalt can be completely ensured to be filled into pores in graphite micro powder at high temperature and high pressure while an asphalt coating layer is formed on the surface of the graphite micro powder; in a high-pressure carbonization process, volatilization of low-molecular-weight aromatic compounds and straight-chain small-molecular aliphatic hydrocarbons in asphalt can be inhibited; and a pressurization process is also beneficial to the proceeding of polymerization reaction, so that the carbonization residual carbon of the asphalt is high, the internal pores of the graphite micro powder can be quickly densified, the compaction density of the negative electrode material is improved, a uniform and compact carbon coating layer can be formed on the surface of the graphite micro powder, the specific surface area of the negative electrode material is reduced, and the first efficiency and the cycle performance of the battery are improved.
Owner:ZHANJIANG JUXIN NEW ENERGY +1

Drilling-and-backfilling type circular mould drilling equipment

The invention relates to the field of circular mould drilling equipment, in particular to drilling-and-backfilling type circular mould drilling equipment. The equipment comprises two semicircular clamping rings which are detachably connected, a circular mould is clamped between the two clamping rings, the clamping rings are placed on a circular mould roller carrier, a plurality of containing holes are formed in the outer side walls of the clamping rings, filling assemblies are arranged in the containing holes, the filling assemblies correspond to material holes in the circular mold one to one, each filling assembly comprises an electromagnet arranged at the opening end of the corresponding containing hole, the electromagnets are electrically connected to a control system, a magnetic block used for repelling the electromagnet is arranged in each containing hole in a sliding manner, a reset compression spring is further shored between each magnetic block and the closed end of the corresponding containing hole, and an air guide pipe is arranged on each magnetic block; and the air guide pipes penetrate through the inner walls of the clamping rings in a sliding manner and are provided with sleeve bases, the sleeve bases are sleeved with balloons, one ends of the air guide pipes are communicated with the corresponding containing holes, and the other ends of the air guide pipes are communicated with the corresponding balloons. The equipment has the advantage that the possibility that workers need to clean drilling cuttings in feeding holes of the circular mould subsequently is reduced.
Owner:常州朱美拉模具技术有限公司

Construction technology of grouting back of expansion joint

The invention relates to a construction technology of grouting the back of an expansion joint. The construction technology specially comprises the following steps of first step, performing detection:detecting the armoring situation of the inner part of a tunnel shield concrete reinforced pipe, and marking the positions of inner reinforcing bars on the surface of the tunnel shield concrete reinforced pipe; second step, performing drilling: performing drilling to obtain a grouting hole and an exhaust hole in the 12'o clock positions of the tunnel shield concrete reinforced pipe; third step, mounting a grouting pipe and an exhaust pipe; and fourth step, performing grouting: injecting cement grout into the expansion joint, after the cement grout is drained from the exhaust pipe, sealing the exhaust pipe, controlling the grouting pressure to be 0.3MPa-0.5MPa, when grout in a grout bin of a grouting machine does not fall down within 15 minutes, stopping grouting, finally, separating the grouting machine from an unidirectional check grouting pipe, and completing the grouting. The construction technology has the advantages that grouting can be performed on the back of a water stopping pipe in the expansion joint, so that the expansion joint without a water leakage condition can be subjected to waterproof prevention, and the expansion joint cannot cause the situation of water seeping within a short term.
Owner:北京金河水务建设集团有限公司

A detection method and detection structure of grouting compactness of prefabricated components

The invention discloses a detection method and a detection structure for grouting density of prefabricated parts. The detection method comprises the following steps: providing at least one first prefabricated part and a second prefabricated part, preserving a grouting construction gap between the first prefabricated part and the second prefabricated part, and forming opposite grouting interfaces between the first prefabricated part and the second prefabricated part; arranging prefabrication testing points on the grouting interfaces of the first prefabricated part or / and the second prefabricated part, and connecting the prefabrication testing points with a signal receiver; grouting size into the grouting construction gap; when the size in the grouting construction gap triggers the prefabrication testing points, transmitting signals to the signal receivers from the prefabrication testing points; based on the signals transmitted from the prefabrication testing points, judging the grouting density degree of the grouting construction gap. As the prefabrication testing points are arranged on the grouting interfaces, the density degree of size grouting in the grouting construction gap can be detected, the size can be completely filled without bubble, and the grouting connection quality between the prefabricated parts can be ensured.
Owner:CHINA CONSTR EIGHT ENG DIV CORP LTD

Construction method for pit well of strong weathered rock foundation rich in low-pressure-bearing fissure water

The invention relates to a construction method for a pit well of a strong weathered rock foundation rich in low-pressure-bearing fissure water. The construction method comprises the following steps that (1) a water collecting pit is chiseled in the bottom of the pit well; a flow guide hole is drilled in the side wall of the pit well; a flow guide pipe is plugged into the flow guide hole; a circle of collecting pipes are horizontally arranged on the peripheral side wall of the pit well and are in communication with the flow guide pipes; a drainage pipe is connected to the lowest part of the collecting pipe and extends to the water collecting pit; a water pump is arranged at the bottom of the water collecting pit; pit bottom concrete is poured; a side template supporting cushion block is anchored on the side wall of the pit well; and side formworks corresponding to the side walls of the pit well are installed on the inner sides of the side formwork supporting cushion blocks, scaffold pipes are arranged on the inner sides of the side formworks to outwards support the side formworks, concrete is poured between the side formworks and a rock stratum, the collecting pipe, the drainage pipe and a water pump drainage pipe are poured into the concrete, and the surface of the concrete is cleaned after vibrating and compacting. The constructed pit well is high in strength and good in flatness; and waterproof construction is facilitated, after the water content of the concrete meets the requirement, the bottom plate can be constructed for waterproofing.
Owner:CHINA 22MCC GROUP CORP

Drill and backfill ring die drilling equipment

The invention relates to the field of ring die drilling equipment, in particular to a drill and backfill type ring die drilling equipment, which comprises two semicircular and detachably connected clamping rings, the ring die is clamped between the two clamping rings In between, the clamping ring is placed on the roller frame of the ring die, the outer side wall of the clamping ring is provided with a plurality of accommodating holes, the accommodating holes are provided with filling components, the filling components and the material holes on the ring die are set in one-to-one correspondence, and the filling components It includes an electromagnet arranged at the open end of the accommodating hole, the electromagnet is electrically connected to the control system, a magnetic block for repulsing the electromagnet slides in the accommodating hole, and a reset pressure is supported between the magnetic block and the closed end of the accommodating hole. The magnetic block is provided with an air guide tube, the air guide tube slides through the inner wall of the clamp ring and is provided with a sleeve seat, a balloon is sleeved on the sleeve seat, one end of the air guide tube communicates with the corresponding accommodating hole, and the other end is connected with the corresponding balloon Connected. The present application has the advantage of reducing the possibility that the worker needs to clean up the drill chips in the feed hole of the ring die subsequently.
Owner:常州朱美拉模具技术有限公司
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