Prefabricated cement cone construction structure for plugging bolt hole of outer wall

Abstract

The utility model discloses a prefabricated cement cone construction structure for plugging an outer wall bolt hole, and relates to a construction structure for plugging an outer wall construction aluminum alloy template split bolt hole. Comprising a prefabricated cone-shaped body (1) made of plain cement, the taper of the prefabricated cone-shaped body is the same as that of a hole (6), the large end of the prefabricated cone-shaped body is outwards arranged in the hole, the inner end of the prefabricated cone-shaped body is flush with the inner side surface of an outer wall (5), and the outer end face of the prefabricated cone-shaped body is 2-2.5 mm concave in the outer side surface of the outer wall; a gap of 2-3mm is formed between the periphery of the prefabricated conical body and the hole, and the gap is filled with an expansion rubber layer. The problem that in the prior art, a plug is cylindrical, and a gap between a conical hole and the plug is poor in sealing performance is solved. The construction time is long and the efficiency is low when a plastic plug, cement mortar and a foaming agent are used for plugging the bolt hole. And the problem that the sealing performance of the foaming agent is damaged due to the fact that the plastic plug is affected by thermal expansion and cold contraction and the dry foaming agent around the plug is extruded is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of aluminum alloy formwork outer wall construction, and particularly relates to an outer wall construction aluminum alloy formwork split bolt hole plugging construction structure. BACKGROUND

[0002] Aluminum alloy formwork systems are increasingly applied in the construction industry, not only improving the construction efficiency of house building projects, but also greatly saving a lot of construction materials and labor arrangements. In the construction process, it is found that the bolt holes used by the aluminum alloy formwork are relatively large (32 mm in diameter), and the outer wall bolt hole plugging is not strict, which is prone to leakage problems. At the same time, the project uses a climbing frame as an outer protection scaffold, and the outer wall bolt hole plugging period requirement is relatively tight.

[0003] The leakage problem of the building outer wall is one of the problems to be solved in the process of house building. Complaints are frequently raised due to outer wall leakage, which seriously affects the brand and social image of enterprises. In order to change the disadvantages of the traditional method and reduce and eliminate the leakage problem of the outer wall bolt hole.

[0004] The plugging process of the split bolt hole of the traditional aluminum formwork construction outer wall is as follows: the split bolt hole is plugged with waterproof mortar within a range of 50 mm on the outer side of the outer wall, and the inside is made compact with a foaming agent. There are problems such as multiple plugging processes, high cost, long construction period, unattractive appearance, and large leakage problem.

[0005] Chinese patent document CN113668896A discloses a plugging method for an outer wall bolt hole. The technical solution is as follows: in the construction, the positioning sleeve embedded in the outer wall is taken out, the first pipe and the second pipe are designed to be conical so that the positioning sleeve can smoothly separate from the outer wall body and form a conical hole. The conical hole is inserted into the plug at one end on the outer side of the outer wall, and a waterproof layer is brushed at the end face of the plug to ensure the sealing effect. The bolt hole is filled with a foaming agent, and the inside hole of the bolt hole is filled with a micro-expansion mortar to plug the bolt hole. The micro-expansion mortar can increase the strength of the wall body at the bolt hole to ensure that the wall body has sufficient bearing capacity.

[0006] The above-mentioned patent document technology has the following shortcomings: 1) the sleeve construction forms a two-part conical hole, which is convenient for inserting the plug, but the construction cost is high; and the plug is cylindrical, and the gap between the hole and the plug has poor sealing performance. 2) At least two workers are needed to complete the construction of the plastic plug and the cement mortar and the foaming agent for plugging the bolt hole in about three days, which is time-consuming and inefficient; and the plastic plug is affected by thermal expansion and cold contraction, so that the size of the plug changes with temperature changes, which causes the foaming agent around the plug to be extruded, thereby damaging the sealing performance of the foaming agent.

[0007] Therefore, the utility model is applied. CONTENT OF THE UTILITY MODEL

[0008] The utility model provides a prefabricated cement cone construction structure for outer wall bolt hole plugging to solve the problem of poor gap sealing between the tapered hole and the plug of prior art plug is cylindrical, and the construction time of plastic plug and cement mortar, foaming agent plugging bolt hole is long, and the problem of low efficiency, and the problem that the volume of the plug changes in size when the temperature changes due to the influence of thermal expansion and cold shrinkage of the plug made of plastic, and the problem that the dry foaming agent around the plug is extruded, and the sealing of the foaming agent is damaged.

[0009] To solve the above problems, the utility model provides a prefabricated cement cone construction structure for outer wall bolt hole plugging, including the outer wall 5 of adopting aluminium alloy formwork construction, the hole 6 of the outer wall 5 has the pull bolt of fixed formwork, the hole 6 is tapered and the large diameter end is outside the outer wall 5, and the small diameter end is inside, still including the prefabricated tapered body 1 made of plain cement, the taper of prefabricated tapered body 1 is same with the taper of hole 6, the large end of prefabricated tapered body 1 is set in the hole 6 outward, the inner end of prefabricated tapered body is flush with the inner side surface of outer wall 5, and the outer end surface of prefabricated tapered body is concave to the outer side surface of outer wall 2-2.5 millimeter, there is 2-3 millimeter gap between the periphery of prefabricated tapered body 1 and hole 6, and the gap is filled with expansion adhesive layer 2.

[0010] Further, the prefabricated cement cone construction structure for outer wall bolt hole plugging of the utility model still has the following characteristics: the prefabricated iron ring 3 is arranged on the outside of the outer wall 5, the prefabricated iron ring 3 includes a circular ring body 31 and a handle 32 connected to the circular ring body 31, the circular ring body 31 of the prefabricated iron ring 3 is attached to the surface of the expansion adhesive layer 2 and surrounds the hole 6, and the circular ring body 31 has a polyurethane waterproof coating layer 4.

[0011] Further, the prefabricated cement cone construction structure for outer wall bolt hole plugging of the utility model still has the following characteristics: the total thickness of the polyurethane waterproof coating layer 4 is 3.5-4.5 millimeters, including the polyurethane waterproof coating layer 4 filled in the concave outer end surface of the prefabricated tapered body to the outer side surface of the outer wall 2-2.5 millimeters, and the polyurethane waterproof coating layer 4 protruding 1.5-2 millimeters from the outer side surface of the outer wall.

[0012] The technical effect of the utility model:

[0013] 1, the hole of the pull rod on the outer wall and the prefabricated tapered body are all tapered, the prefabricated tapered body can form effective embedding and extruding effect, and horizontal force is not easy to displace after reaching strength.

[0014] 2, the prefabricated tapered body is made of plain cement, and it is easier to seal and compact relative to the mortar with fluidity, and the prefabricated tapered body of plain cement is not affected by temperature, and the hole sealing effect is good after construction.

[0015] 3、The expansion glue layer is used in the gap between the prefabricated conical body and the hole, the expansion glue has the functions of water absorption expansion and sealing water stop, has good waterproof effect and is not easy to crack.

[0016] 4, Greatly reduce the difficulty of worker site operation, speed up the progress of construction. Traditional cement mortar, foaming agent plugging process one layer bolt hole needs 2 workers construction 3 days to complete; The prefabricated conical body plugging process of the utility model one layer bolt hole only needs 2 workers construction 1 day to complete, and the outer wall base layer and insulation can be quickly inserted and constructed, thereby saving the construction period of outer wall, reducing the construction time.

[0017] 5, Simplify the construction process, compared with the traditional cement mortar plug screw hole process, this technology only needs to clean the hole, wrap the slurry and fill, and the process is simple.

[0018] 6, In the aspect of material control, the prefabricated conical body plugging construction process greatly reduces the waste of materials, reduces cost and increases efficiency. The first use of the outer wall hole prefabricated conical body plugging construction process also ensures the safety production of the project.

[0019] 7, The process can make the outer wall screw hole plugging convenient, fast and more compact, without filling foaming agent and expanding cement mortar, reducing the construction difficulty of workers and reducing the leakage hidden trouble caused by the workers' inability to plug compactly.

[0020] 8, The prefabricated circular iron ring is used as a mold, 3.5-4.5mm thick polyurethane waterproof paint is brushed on the outside according to the shape of the mold, the paint is not easy to flow downward, the thickness meets the requirements, and the brushed paint is uniform, achieving the best waterproof effect. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the perspective view of the prefabricated conical body of the utility model;

[0022] Figure 2 is the perspective view of the prefabricated iron ring of the utility model;

[0023] Figure 3 is the hole schematic view of the outer wall and the counter-bolt of the utility model;

[0024] Figure 4 is the sectional view of the utility model;

[0025] Figure 5 is the left view of Figure 4 .

[0026] The symbols in the figure are explained as follows: prefabricated conical body 1, expansion glue layer 2, prefabricated iron ring 3, circular ring body 31, handle 32, polyurethane waterproof paint layer 4, outer wall 5, hole 6, aluminum mold conical plastic sleeve 61. DETAILED DESCRIPTION

[0027] The utility model will be explained in detail with the best embodiment.

[0028] As Figures 1-5 The utility model discloses a prefabricated conical body construction structure for plugging the bolt hole of the outer wall, which comprises an outer wall 5 constructed by using an aluminum alloy formwork, a hole 6 for fixing the anchor bolt of the formwork on the outer wall 5, a positioning sleeve 61 for positioning the position of the anchor bolt during the construction of the outer wall 5, and the positioning sleeve 61 is embedded in the outer wall 5 and then taken out after the construction of the outer wall 5; the hole 6 is conical and has a large-diameter end on the outside of the outer wall 5 and a small-diameter end on the inside; the utility model also comprises a prefabricated conical body 1 made of plain cement, which has the same taper as the hole 6 and a length smaller than that of the hole 6, and the large end of the prefabricated conical body 1 is arranged in the hole 6 with the inner end flush with the inner surface of the outer wall 5 and the outer end recessed in the outer surface of the outer wall 5 by a depth S of 2-2.5 mm; the gap between the prefabricated conical body 1 and the hole 6 is filled with an expansion adhesive layer 2; a prefabricated iron ring 3 is arranged on the outside of the outer wall 5, which comprises a circular ring body 31 and a handle 32 connected to the circular ring body 31, and the operation mode is that a worker holds the handle 32 to buckle the circular ring body 31 on the wall. The circular ring body 31 of the prefabricated iron ring 3 is attached to the surface of the expansion adhesive layer 2 and surrounds the hole 6, and the circular ring body 31 has a polyurethane waterproof coating layer 4, which has a total thickness of 3.5-4.5 mm, including the polyurethane waterproof coating layer 4 filled in the recessed outer end surface of the prefabricated conical body in the outer surface of the outer wall 5 by 2-2.5 mm and the polyurethane waterproof coating layer 4 protruding from the outer surface of the outer wall 5 by 1.5-2 mm.

[0029] The conventional polyurethane waterproof coating layer has a construction thickness of 1.5-2 mm, but the utility model has an annular gap between the prefabricated conical body and the hole of the outer wall, and the gap is covered by the polyurethane waterproof coating on the outside of the wall, thereby achieving the best waterproof effect. Engineering experiments prove that the polyurethane waterproof coating layer with a thickness of 2 mm will be damaged in the decoration construction of the outer wall surface, and the waterproof effect is not good. Therefore, the prefabricated iron ring is invented, and the circular ring body of the prefabricated iron ring is used to block the gap, so that the polyurethane waterproof coating with a thickness of 3.5-4.5 mm can be coated in the circular ring body, thereby achieving the waterproof effect. The polyurethane waterproof coating is slightly dry and does not flow, so the prefabricated iron ring can be removed.

[0030] The expansion adhesive can also be called waterproof micro-expansion adhesive material. The expansion adhesive has the functions of water absorption expansion and sealing water stop. The expansion adhesive is a single-component, solvent-free polyurethane type sealant, which can expand after contacting water, has good filling and bonding properties, ensures that the product can be filled into cracks and gaps, and is usually suitable for wet, smooth and rough surfaces. It is based on polyurethane prepolymer and contains urethane paste with special grafting technology, and has the functions of volume expansion and elastic sealing water stop after curing.

[0031] When the aluminum alloy formwork construction process is used for the outer wall, the outer wall formwork tension bolt hole is a cylindrical tapered thick end section with a diameter of 38mm, which is located on the outer side of the wall body, and a thin end section with a diameter of 28mm; the prefabricated tapered body located on the inner side of the wall body is made of plain concrete and has a size smaller than that of the hole. After the formwork is removed, the prefabricated tapered body is inserted into the wall body, thereby playing a role of blocking and compacting. When the outer wall concrete pouring is completed and the form removal test block reaches the design strength, the aluminum alloy formwork is removed, the aluminum formwork tapered plastic sleeve is removed, and the hole is cleaned and watered. Then, the prefabricated tapered body is coated with expansion adhesive and inserted into the hole from the outdoor side to the indoor side, and is smoothed along the wall surface. The outer side is brushed with 1.5mm thick polyurethane waterproof coating with a circular diameter of 120mm. After the water test, if there is no leakage, the outer wall finishing construction can be carried out.

[0032] Social benefits: Compared with the traditional foaming agent blocking technology, the foaming agent construction has the problems of easy leakage, many processes, high cost, long construction period, difficult operation and poor forming appearance. The prefabricated tapered body blocking process has the advantages of few processes, low cost, convenient operation, strong waterproofness, small cracking and leakage hidden danger and good forming appearance, and has low on-site operation difficulty, can effectively speed up the construction progress, better solve the outer wall screw rod hole blocking problem, effectively avoid the quality hidden danger such as outer wall screw rod hole leakage and blocking not compact, reduce the complaints due to outer wall leakage, and establish the brand and social image of the enterprise.

[0033] Economic benefits: According to the statistics and comparison of the utility model technology, the quality is improved, the fund investment is reduced, the construction period is shortened, and the benefits are good. Compared with the existing construction technology, the construction period is effectively shortened, and the fund is saved.

[0034] Process flow: remove the aluminum formwork tapered plastic sleeve, clean the hole and water, coat the finished product prefabricated tapered body with expansion adhesive, block the hole (from the outdoor to the indoor), use the prefabricated iron ring on the outdoor side and coat the polyurethane waterproof coating layer, and carry out the outer wall water test.

Claims

1. A prefabricated cement cone construction structure for plugging the bolt hole of an outer wall, comprising an outer wall (5) constructed by using an aluminum alloy formwork, the outer wall (5) having a hole (6) for a tension bolt for fixing the formwork, the hole (6) being conical and having a large-diameter end on the outer side of the outer wall (5) and a small-diameter end on the inner side of the outer wall (5), characterized in that, The prefabricated conical body (1) is made of plain cement, has the same taper as the hole (6), is arranged in the hole (6) with the large end outward, has the inner end flush with the inner side surface of the outer wall (5), and has the outer end surface recessed from the outer side surface of the outer wall by 2-2.5 mm; a gap of 2-3 mm is formed between the periphery of the prefabricated conical body (1) and the hole (6), and the gap is filled with the expansion adhesive layer (2).

2. The construction structure of the precast cement cone for the plugging of the exterior wall bolt hole according to claim 1, characterized in that, The prefabricated iron ring (3) is arranged on the outer side of the outer wall (5), includes a circular ring body (31) and a handle (32) connected to the circular ring body (31), and has the circular ring body (31) abutting against the surface of the expansion adhesive layer (2) and surrounding the hole (6), and the circular ring body (31) has the polyurethane waterproof coating layer (4) inside.

3. The construction structure for the precast cement cone for the plugging of the exterior wall bolt hole according to claim 2, characterized in that, The total thickness of the polyurethane waterproof coating layer (4) is 3.5-4.5 mm, includes the polyurethane waterproof coating layer (4) filled in the recess of the outer end surface of the prefabricated conical body from the outer side surface of the outer wall by 2-2.5 mm, and the polyurethane waterproof coating layer (4) protruding from the outer side surface of the outer wall by 1.5-2 mm.

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