CN114150847A

CN114150847A - Construction method for preventing external wall thermal insulation mortar from falling off

Info

Publication number: CN114150847A
Application number: CN202111678707.4A
Authority: CN
Inventors: 颜惠国; 马越洲; 俞军平; 陈英杰; 江晓明
Original assignee: Zhejiang Lanlv Shuangcheng Architectural Design Co ltd
Current assignee: Zhejiang Lanlv Shuangcheng Architectural Design Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-03-08
Anticipated expiration: 2041-12-31
Also published as: CN114150847B

Abstract

The invention discloses an anti-drop construction method for external wall thermal insulation mortar, which relates to the technical field of building construction and comprises the following steps: s1, installing a plastering assembly on the outer wall base surface, wherein a plastering cavity is formed between the plastering assembly and the outer wall base surface; s2, erecting fiber grids in the plastering cavity; s3, injecting heat preservation mortar into the plastering cavity; s4, molding the heat-insulating mortar; and S5, adjusting the plastering component, changing the position of the plastering cavity, namely taking the top of the molded heat-insulating mortar as the inner bottom wall of the plastering cavity, unfolding the fiber grids by using the plastering component, and repeating the step S3 until the molded heat-insulating mortar and the top of the base surface of the outer wall. This scheme replaces artifical direct plastering, reduces because of the not enough joint surface of plastering that causes of artificial experience is discontinuous, and the whole thickness of plastering is non-uniform, whole inhomogeneous class defect, and then improves the firm type of outer wall insulation mortar. This application has the effect that improves outer wall insulation mortar and break away from.

Description

Construction method for preventing external wall thermal insulation mortar from falling off

Technical Field

The invention relates to the technical field of building construction, in particular to an anti-falling construction method for external wall thermal insulation mortar.

Background

The heat-insulating mortar is a premixed dry powder mortar prepared by mixing various light materials serving as aggregates, cement serving as a cementing material and some modified additives and stirring by a production enterprise, and is mainly used for heat insulation of building exterior walls.

At present, the construction process of the external wall thermal insulation mortar comprises the following steps:

s1, carrying out base layer treatment and coating an interface agent;

s2, stirring the mortar and paving the mortar;

and S3, maintaining for at least 7 days.

With respect to the above-described related art, the inventors consider that: the paving of the external wall thermal insulation mortar depends on the experience of operators, and is slightly improper, hollowing can be formed between the thermal insulation mortar and the external wall, so that the thermal insulation mortar is easy to separate from the external wall, and improvement is needed.

Disclosure of Invention

In order to improve the separation phenomenon of the external wall thermal insulation mortar, the application provides an anti-falling construction method of the external wall thermal insulation mortar.

The construction method for preventing the external wall thermal insulation mortar from falling off comprises the following steps:

s1, installing a plastering assembly on the outer wall base surface, wherein a plastering cavity is formed between the plastering assembly and the outer wall base surface;

s2, erecting fiber grids in the plastering cavity;

s3, injecting heat preservation mortar into the plastering cavity;

s4, molding the heat-insulating mortar;

and S5, adjusting the plastering component, changing the position of the plastering cavity, namely taking the top of the molded heat-insulating mortar as the inner bottom wall of the plastering cavity, unfolding the fiber grids by using the plastering component, and repeating the step S3 until the molded heat-insulating mortar and the top of the base surface of the outer wall.

By adopting the technical scheme, firstly, the fiber grids are erected in the plastering cavity, then the heat-preservation mortar is injected into the plastering cavity, and the heat-preservation mortar is formed under the action of the plastering component, wherein the heat-preservation mortar is formed between the initial setting state and the final setting state, and then the heat-preservation mortar is in contact with the limitation of the plastering component, and is naturally finally set. And adjusting the plastering assembly, enabling the fiber grids to be adaptively unfolded, taking the top of the molded heat-preservation mortar as the inner bottom wall of the plastering cavity, and continuously injecting the heat-preservation mortar until the heat-preservation mortar is capped. This scheme replaces artifical direct plastering, reduces because of the not enough joint surface of plastering that causes of artificial experience is discontinuous, and the whole thickness of plastering is non-uniform, whole defect such as inhomogeneous, and then improves the firm type of outer wall insulation mortar to finally make this scheme have the advantage that improves the outer wall insulation mortar and break away from.

Optionally, in step S1, the plastering assembly is installed as follows:

s1-1, installing two groups of guide rails on the outer wall base surface at intervals, wherein the length direction of the guide rails is consistent with the height direction of the outer wall base surface;

s1-2, installing a base on the outer wall base surface, wherein the base is respectively spliced with the two groups of guide rails;

and S1-3, installing scrapers on the sides of the two groups of guide rails, which are far away from the outer wall base surface, so that the scrapers are abutted against the base, and the plastering cavity at the moment consists of the outer wall base surface, the opposite sides of the two groups of guide rails and the side of the scrapers, which faces the outer wall base surface.

By adopting the technical scheme, the scraper can change along the length direction of the guide rail, so that the position of the plastering cavity can be improved, the thermal insulation mortar can be successively molded along the height direction of the base surface of the outer wall, the molding area of the thermal insulation mortar is increased, and the construction efficiency is improved.

Optionally, in step S1-2, the thickness of the plastering cavity is consistent with the specified thickness of the thermal mortar.

Through adopting above-mentioned technical scheme, because of plastering the thickness in chamber unanimous with the thickness that the heat preservation mortar stipulated, so when pouring into the heat preservation mortar into the intracavity of plastering, the heat preservation mortar is difficult for spilling over extravagantly under the effect is blockked to the intracavity wall of plastering, pollutes the operation face of plastering, and on the other hand directly plasters according to the thickness in plastering chamber, and the precision is accurate, need not the secondary and makes level, the construction is convenient.

Optionally, in step S2, the fiber mesh mounting and unfolding steps are as follows:

s2-1, winding a shaft rod at one end of the fiber mesh, and fixing the other end of the fiber mesh on the outer wall base surface;

s2-2, a sliding block is rotatably arranged on the peripheral wall of the shaft rod in a penetrating way, and the sliding block is arranged on the guide rail in a sliding way;

s2-3, a gear is fixed on the peripheral wall of the shaft rod, the gear is meshed with a rack, and the rack is installed on the guide rail along the height direction of the base surface of the outer wall;

and S2-4, sliding the lifting slide block along the length direction of the guide rail, and continuously injecting heat preservation mortar into the plastering cavity.

Through adopting above-mentioned technical scheme, the slider that rises slides along the length direction of guide rail, the gear takes place to rotate because of the rack effect for the axostylus axostyle takes place to rotate, and then makes the winding expand at the fibre net of axostylus axostyle, and the one end of keeping away from the axostylus axostyle because of the fibre net is fixed, so the fibre net is the state of tightening all the time, strengthens the combination between fibre net and the heat preservation mortar, further improves the droing of heat preservation mortar.

Optionally, in steps S2-2 and S2-3, the mounting of the gear and the slider includes the following steps:

the rack is embedded in the guide rail, so that two ends of the rack are respectively abutted against the guide rail, the slide block is embedded in the guide rail in a sliding manner, and the slide block is respectively abutted against the side wall of the guide rail and the side wall of the rack.

Through adopting above-mentioned technical scheme, because of the rack inlays to be established in the guide rail, and receive the slider spacing, the event takes out the slider and then can conveniently take out the rack, and then realizes retrieving reuse.

Optionally, in the step S3, the injecting of the thermal mortar includes the following steps:

s3-1, forming a grouting chamber on one side of the scraper plate, which is far away from the base surface of the outer wall, and forming a pulp flowing port communicated with a plastering cavity in the grouting chamber;

s3-2, conveying heat preservation mortar into the grouting cavity, and enabling the heat preservation mortar to enter the plastering cavity through the pulp flowing port.

By adopting the technical scheme, the heat-insulating mortar is temporarily stored in the grouting cavity, construction is convenient, the slurry flow port enables the heat-insulating mortar to enter the plastering cavity conveniently, and the heat-insulating mortar in the grouting cavity exerts pressure on one side of the grouting cavity facing to the base surface of the outer wall, so that the heat-insulating mortar in the plastering cavity is strickled off and compacted.

Optionally, in step S3-3, a stop is disposed on a side of the scraper facing the outer wall base surface, the stop is located above the head hole, and the stop abuts against the fiber mesh and straightens the fiber mesh.

By adopting the technical scheme, the stop block can straighten and tighten the fiber grids, so that the combination between the fiber grids and the heat-insulating mortar in the plastering cavity can be further enhanced, and the separation of the heat-insulating mortar from the base surface of the outer wall is further improved.

Optionally, in step S1, the first expansion bolt is used to position the guide rail, the nut of the first expansion bolt is loosened during disassembly, the fiber mesh is hung on the first expansion bolt, and the nut of the first expansion bolt is locked again.

Through adopting above-mentioned technical scheme, expansion bolts and nut dismouting guide rail temporarily, make things convenient for on the one hand to retrieve reuse guide rail, and on the other hand is convenient fixed with fibre net, improves fibre net wholeness.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the scheme replaces manual plastering, reduces the quality defect of thermal insulation mortar pavement caused by insufficient manual experience, and finally has the advantage of improving the separation of the thermal insulation mortar of the outer wall;

2. under the blocking effect of the inner wall of the plastering cavity, the heat-insulating mortar is not easy to overflow and waste to pollute a plastering operation surface, and is directly plastered according to the thickness of the plastering cavity, so that the precision is accurate, secondary leveling is not needed, and the construction is convenient;

3. the fiber grids wound on the shaft rod are unfolded, and the end, far away from the shaft rod, of the fiber grids is fixed, so that the fiber grids are always in a tight state, the combination between the fiber grids and the thermal insulation mortar is enhanced, and the falling of the thermal insulation mortar is further improved;

4. the sliding block slides along the length direction of the guide rail, the gear rotates under the action of the rack, so that the shaft rod rotates, the fiber grids wound on the shaft rod are unfolded, and the ends, far away from the shaft rod, of the fiber grids are fixed, so that the fiber grids are always in a tight state, the combination between the fiber grids and the thermal insulation mortar is enhanced, and the falling of the thermal insulation mortar is further improved;

5. the stop block can straighten and tighten the fiber grids, so that the combination between the fiber grids and the heat-insulating mortar in the plastering cavity can be further enhanced, and the separation of the heat-insulating mortar from the base surface of the outer wall is further improved.

Drawings

FIG. 1 is a flow chart of a construction process according to an embodiment of the present application;

FIG. 2 is a schematic view showing the overall structure of the base surface of the outer wall, the plastering component, the plastering cavity and the fiber mesh according to the embodiment of the application;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 1;

fig. 4 is a schematic cross-sectional view at B-B in fig. 1.

Description of reference numerals: 1. an outer wall base surface;

2. a plastering assembly; 21. a guide rail; 211. a card slot; 22. a base; 23. a squeegee; 231. a slider; 232. a grouting chamber; 233. a head discharge port; 234. a stopper; 2341. smoothing the hole; 235. a grouting port; 236. an avoidance groove; 24. a shaft lever; 25. a gear; 26. a rack; 27. a first expansion bolt; 28. a second expansion bolt;

3. a plastering cavity;

4. and (4) fiber grids.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses an anti-dropping construction method for external wall thermal insulation mortar, which comprises the following steps with reference to fig. 1:

s1, installing the plastering component (2) and the fiber mesh (4);

s2, injecting heat-preservation mortar into the plastering cavity (3);

s3, adjusting the plastering assembly (2), and continuously injecting heat-insulating mortar;

s4, disassembling the plastering component (2) and fixing the fiber mesh (4);

and S5, trimming and maintaining.

The fiber grids (4) are preferably glass fiber grids (4), the glass fiber grids (4) have the advantages of light weight, high strength, alkali resistance, cracking and the like, the internal tension shrinkage of the thermal insulation mortar and the cracking caused by external force can be effectively weakened, and the thermal insulation mortar can be effectively prevented from being separated from the outer wall base surface (1).

In step S1, the installation of the plastering unit (2) and the fiber mesh (4) comprises the following steps:

referring to fig. 2 and 3:

s1-1, horizontally positioning and laying two groups of guide rails (21) on the outer wall base surface (1), wherein the two groups of guide rails (21) are arranged in parallel at intervals, and the length direction of the guide rails (21) is consistent with the height direction of the outer wall base surface (1);

s1-2, fixing the guide rail (21) by using the first expansion bolt (27):

s1-2-1, sequentially penetrating the bolt head of the first expansion bolt (27) through two end parts of the guide rail (21) and driving the bolt head into the outer wall base surface (1);

s1-2-2, sequentially using the nut of the first expansion bolt (27) to lock the bolt head of the first expansion bolt (27) in the groove of the guide rail (21);

s1-3, clamping grooves (211) are formed in the inner bottom walls of the grooves of the two groups of guide rails (21), the extending direction of the clamping grooves (211) is consistent with the height direction of the outer wall base surface (1), the end portions of the racks (26) are respectively abutted against the inner bottom walls and the inner top walls of the clamping grooves (211), the two racks (26) are respectively meshed with gears (25), shaft rods (24) are coaxially fixed on the two gears (25), and the shaft rods (24) are horizontally arranged;

referring to fig. 2 and 4:

s1-4, fixing and winding one end of the fiber grid (4) on the peripheral wall of the shaft lever (24), and unfolding the other end downwards, wherein the distance between the unfolded range and one side opposite to the two groups of guide rails (21) is reasonably arranged;

s1-5, fixing one end of the fiber grid (4) which is unfolded downwards by using a second expansion bolt (28), tightening and fixing the fiber grid (4) on the outer wall base surface (1), and sequentially arranging the second expansion bolts (28) at intervals along the axial direction of the shaft rod (24);

s1-6, temporarily positioning and installing the base (22) on the outer wall base surface (1), wherein in an initial state, the top of the base (22) vertically abuts against the bottom ends of the two groups of guide rails (21) respectively;

s1-7, a scraping plate (23) is tightly supported and installed on the top of a base (22), sliding blocks (231) are respectively fixed on two sides of the top of the scraping plate (23), and the two sliding blocks (231) are respectively installed in corresponding guide rails (21) in a sliding mode;

s1-8, the two ends of the shaft lever (24) are respectively connected with the corresponding sliding blocks (231) in a rotating and installing way.

At this time, the scraper (23) is spaced in parallel with the outer wall base surface (1). Scraper blade (23) upper portion and guide rail (21) butt connection, scraper blade (23) lower part inside is formed with slip casting chamber (232), and one side that slip casting chamber (232) deviate from outer wall base face (1) is formed with slip casting mouth (235), and one side that slip casting chamber (232) face outer wall base face (1) is formed with head (233), and the position of head (233) is less than the position of slip casting mouth (235). A baffle is vertically and fixedly connected to one side, facing the outer wall base surface (1), of the lower portion of the scraper (23), the baffle is located above the pulp flowing opening (233), and one side, far away from the grouting chamber (232), of the baffle extends vertically towards the outer wall base surface (1). Simultaneously the baffle has been seted up along the axial direction level of axostylus axostyle (24) and has been smoothed hole (2341), smoothes hole (2341) and supplies fibre net (4) to pass through, because of smooth spacing and the spacing effect of second expansion bolts (28) of hole (2341) lateral wall, so be located the fibre net (4) between baffle and the second bolt piece and be roughly parallel with outer wall base plane (1). Furthermore, the outer wall base surface (1), the lower surface of the baffle, one side of the scraper (23) which is lower than the baffle and faces the outer wall base surface (1), the upper surface of the base (22) and the opposite side of the two groups of guide rails (21) are encircled to form a plastering cavity (3). The plastering cavity (3) is made of thermal mortar, and the thickness of the plastering cavity (3) is consistent with the specified thickness of the thermal mortar, so that the plastering cavity (3) is molded once without secondary leveling, and the construction efficiency is improved.

Referring to fig. 2 and 4:

in the step S2, heat preservation mortar is continuously conveyed into the grouting cavity (232) from the grouting port (235), the heat preservation mortar enters the plastering cavity (3) through the pulp flowing port (233), and the heat preservation mortar is continuously conveyed into the grouting cavity (232), so that when the heat preservation mortar in the plastering cavity (3) overflows from a gap between the baffle and the outer wall base surface (1), the heat preservation mortar in the grouting cavity (232) can continuously extrude the heat preservation mortar in the plastering cavity (3), reasonable distribution and interaction of the heat preservation mortar and the limiting grids are realized, and the stability of the heat preservation mortar after final setting is further improved.

Referring to fig. 2 and 4:

in the step S3, the plastering assembly (2) is adjusted, and the step of continuously injecting the thermal mortar comprises the following steps

S3-1, when the heat-insulating mortar in the plastering cavity (3) is about to be finally set, pushing the scraper (23) from bottom to top along the length direction of the guide rail (21);

in order to reduce the damage of the displacement of the scraper (23) to the finally-set heat-insulating mortar, a mode of applying force to two sides of the scraper (23) and further pushing the scraper (23) can be preferably adopted. The sliding block (231) rises and displaces along the direction of the guide rail (21), then the shaft lever (24) and the gear (25) displace along the height direction of the outer wall base surface (1), the gear (25) rotates under the action of the rack (26), the shaft lever (24) also rotates along with the rotation of the gear (25), and then the fiber grids (4) are stretched tightly and unfolded upwards. When the baffle plate rises as the scraper (23) rises, the side wall of the smoothing hole (2341) further smoothes the fiber mesh (4). At the moment, the position of the inner bottom wall of the plastering cavity (3) is raised, and the position of the inner bottom wall of the plastering cavity (3) is changed into the top of the heat-preservation mortar to be finally set from the original upper surface of the base (22). The combination of the fiber grids (4) and the thermal insulation mortar is in a reasonable state all the time, the tensile strength of the thermal insulation mortar is improved, and the falling of the thermal insulation mortar is improved.

Meanwhile, if the gear 25 is not matched with the scraper 23, an avoiding groove 236 is formed on one side of the scraper 23 facing the outer wall base surface 1 for accommodating the gear 25, so that the reasonability of the plastering assembly 2 is improved.

S3-2, when the inner bottom wall of the flow-slurry opening (233) rises to a reasonable position, continuously conveying heat-insulating mortar from the grouting opening (235) into the grouting chamber (232);

s3-3, repeating the steps of S3-1 and S3-2.

Referring to fig. 2 and 4: in step S4, the plastering unit (2) is disassembled, and the fiber mesh (4) is fixed, comprising the following steps:

s4-1, namely, when the top of the finally set heat-insulating mortar is to be capped, separating the fiber grids (4) from the shaft rod (24), cutting redundant fiber grids (4) and taking a temporary fixing measure;

s4-2, separating the shaft lever (24) from the slide block (231), separating the gear (25) from the rack (26), taking out the slide block (231), and recovering the scraper (23);

s4-3, loosening the nut of the first expansion bolt (27) and disassembling the recovery guide rail 21.

Referring to fig. 2 and 4: in the step S5, the edge closing and maintaining includes the following steps:

s5-1, releasing the temporary fixation of the fiber mesh (4);

s5-2, lengthening the redundant fiber grids (4) by using binding wires, and fully paving the corners of the base surface (1) of the outer wall;

s5-3, hanging the redundant fiber grids (4) on the bolt head of the first expansion bolt (27), and re-screwing the nut of the first expansion bolt (27);

s5-4, manually trimming edges and corners;

and S5-6, moistening and maintaining.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The anti-drop construction method of the external wall thermal insulation mortar is characterized by comprising the following steps: which comprises the following steps:

s1, installing a plastering assembly (2) on the outer wall base surface (1), wherein a plastering cavity (3) is formed between the plastering assembly (2) and the outer wall base surface (1);

s2, erecting a fiber grid (4) in the plastering cavity (3);

s3, injecting heat-preservation mortar into the plastering cavity (3);

s4, molding the heat-insulating mortar;

and S5, adjusting the plastering component (2), changing the position of the plastering cavity (3), namely taking the top of the formed heat-insulating mortar as the inner bottom wall of the plastering cavity (3), unfolding the fiber grids (4) by using the plastering component (2), and repeating the step S3 until the formed heat-insulating mortar is on the top of the outer wall base surface (1).

2. The anti-drop construction method of the external wall thermal insulation mortar according to claim 1, characterized in that:

in step S1, the plastering unit (2) is installed as follows:

s1-1, two groups of guide rails (21) are installed on the outer wall base surface (1) at intervals, and the length direction of the guide rails (21) is consistent with the height direction of the outer wall base surface (1);

s1-2, installing a base (22) on the outer wall base surface (1), wherein the base (22) is spliced with the two groups of guide rails (21) respectively;

s1-3, a scraper (23) is installed on one side, away from the outer wall base surface (1), of the two groups of guide rails (21), so that the scraper (23) is abutted against the base (22), and the plastering cavity (3) at the moment is composed of the outer wall base surface (1), the opposite sides of the two groups of guide rails (21) and one side, facing the outer wall base surface (1), of the scraper (23).

3. The anti-drop construction method of the external wall thermal insulation mortar according to claim 2, characterized in that:

in the step S1-2, the thickness of the plastering cavity (3) is consistent with the specified thickness of the thermal mortar.

4. The anti-drop construction method of the external wall thermal insulation mortar according to claim 2, characterized in that:

in the step S2, the steps of installing and unfolding the fiber mesh (4) are as follows:

s2-1, winding a shaft rod (24) at one end of the fiber mesh (4), and fixing the other end of the fiber mesh (4) on the outer wall base surface (1);

s2-2, a slide block (231) is rotatably arranged on the peripheral wall of the shaft lever (24) in a penetrating way, and the slide block (231) is arranged on the guide rail (21) in a sliding way;

s2-3, a gear (25) is further fixed on the peripheral wall of the shaft rod (24), a rack (26) is meshed with the gear (25), and the rack (26) is installed on the guide rail (21) along the height direction of the outer wall base surface (1);

s2-4, sliding the lifting slide block (231) along the length direction of the guide rail (21) and continuously injecting heat preservation mortar into the plastering cavity (3).

5. The anti-drop construction method for the external wall thermal insulation mortar according to claim 4, characterized in that:

in the steps of S2-2 and S2-3, the installation of the gear (25) and the slider (231) comprises the steps of:

the rack (26) is embedded in the guide rail (21), two ends of the rack (26) are respectively abutted against the guide rail (21), the sliding block (231) is embedded in the guide rail (21) in a sliding manner, and the sliding block (231) is respectively abutted against the side wall of the guide rail (21) and the side wall of the rack (26).

6. The anti-drop construction method of the external wall thermal insulation mortar according to claim 2, characterized in that:

in the step S3, the thermal mortar injection method comprises the following steps:

s3-1, forming a grouting chamber (232) on one side of the scraper (23) departing from the outer wall base surface (1), and arranging a pulp flowing opening (233) communicated with the plastering cavity (3) in the grouting chamber (232);

s3-2, conveying heat preservation mortar into the grouting cavity (232), and enabling the heat preservation mortar to enter the plastering cavity (3) through the pulp flowing port (233).

7. The anti-drop construction method for the external wall thermal insulation mortar according to claim 6, characterized in that:

s3-3, a stop block (234) is arranged on one side, facing the outer wall base surface (1), of the scraper (23), the stop block (234) is located above the pulp flowing opening (233), and the stop block (234) abuts against the fiber grids (4) and straightens the fiber grids (4).

8. The anti-drop construction method of the external wall thermal insulation mortar according to claim 2, characterized in that:

in the step S1, the guide rail (21) is positioned by using the first expansion bolt (27), the nut of the first expansion bolt (27) is loosened when the guide rail is detached, the fiber mesh (4) is hung on the first expansion bolt (27), and the nut of the first expansion bolt (27) is locked again.