CN107514149B - Secondary structure anti-seepage and anti-leakage construction method - Google Patents
Secondary structure anti-seepage and anti-leakage construction method Download PDFInfo
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- CN107514149B CN107514149B CN201610427103.5A CN201610427103A CN107514149B CN 107514149 B CN107514149 B CN 107514149B CN 201610427103 A CN201610427103 A CN 201610427103A CN 107514149 B CN107514149 B CN 107514149B
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- construction method
- secondary structure
- seepage
- grouting
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
Abstract
The invention discloses an anti-seepage and anti-leakage construction method for a secondary structure, which solves the problems of seepage and reinforcement of the conventional secondary structure. Meanwhile, the grouting pipe is arranged, so that the grout between the secondary structure plate and the base surface flows to the outer layer from the middle, comprehensive grouting is achieved, and internal air holes are woven.
Description
Technical Field
The invention relates to a construction method of a building waterproof structure, in particular to a construction method of a secondary structure with impermeability and leakage resistance.
Background
In the building, after the stress structures of some main bodies and the like are completed, the construction needs to be carried out again, at the moment, some non-bearing secondary structures are generated, such as parapet concrete pouring R corners, expansion joint concrete pouring R corners and the like, and because the structures are some non-stress structures, the concrete pouring quality is often neglected in the construction process, so that some serious leakage phenomena often occur later and the remedy is needed. The ordinary remedy is directly to add a layer of cement paste at the R angle position or lay a layer of waterproof coiled material on the upper die, but gaps and gaps still exist inside the waterproof coiled material, and the leakage prevention of the surface R angle is only temporary and permanent, and the problem of water leakage cannot be fundamentally solved, so that further improvement is needed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a secondary structure anti-permeability and anti-leakage construction method which can solve the basic problem of the secondary structure anti-permeability and anti-leakage and can reinforce the secondary structure.
In order to achieve the purpose, the invention provides the following technical scheme:
a construction method for secondary structure anti-seepage and anti-leakage comprises the following steps,
1) roughening the base surface, removing impurities, pouring or building the base surface to form a secondary structural plate, wherein a seam exists between the secondary structural plate and the base surface, and the seam is arranged on the surface where the secondary structural plate is connected with the base surface;
2) arranging a grouting pipe in the joint;
3) the base surface is connected with the secondary structural plate to form an upstream surface and a downstream surface, and a concrete pouring R angle is arranged on the upstream surface and at an included angle formed by the base surface and the secondary structural plate;
4) covering a base surface on the water-facing surface with the over-poured concrete R angle until the secondary structural slab covers the waterproof layer;
5) a moisture-proof layer is arranged on the back water surface,
the moisture-proof layer covers the gap connecting the base surface and the secondary structure plate and extends to positions on two sides of the gap. By adopting the technical scheme, the waterproof layer can not have sharp corners when being laid by arranging the R angle of the cast concrete, and the sharp corners are easy to crack by the principle of stress concentration, so that the corners need to be removed, and the R angle of the cast concrete is arranged. In addition, in the connection between the secondary structure plate and the base surface, although water-proofing treatment is performed on the upstream surface, water remains in the corners and permeates into the interior, and at this time, the moisture-proof layer is provided on the backside surface so as to be relatively dry because the backside surface is free from water but is likely to get damp.
The present invention is further preferably: an additional layer is arranged between the waterproof layer and the R corner of the poured concrete, and the waterproof layer is paved 20-48 hours after the additional layer is finished.
The present invention is further preferably: and the additional layer is firstly paved by adopting polymer cement mortar, and then the second layer is paved by adopting a high-molecular self-adhesive coiled material in a wet mode, so that the additional layer is completed and kept for 24 hours.
Through adopting above-mentioned technical scheme, the setting of additional layer lets waterproof become double-deck waterproof, and its waterproof ability improves, in addition, passes through 22-48 after setting up the additional layer, and the additional layer can closely paste with the basic unit, then does follow-up construction again. Accurately, the holding time is related to the temperature, and the adhesive can be tightly bonded in summer or at the temperature of 20 ℃ for 24 hours; the temperature is low in winter, 48 hours are needed, and the coiled material can be well adhered to the base layer. Can let the additional layer reach the effect of separation earlier, and can not mix between the waterproof layer and combine into the one deck, for the setting of additional layer, the waterproof layer sets up after the additional layer has set up the complete function again on its surface, can let two-layer mutual interference not like this.
The present invention is further preferably: after the laying of the additional layer is finished, a first bonding layer made of polymer cement paste is laid on the additional layer in a superposition mode, the thickness of the first bonding layer is larger than 5mm, a second bonding layer made of the same material of polymer cement paste is laid on the additional layer in the same way, the thickness of the second bonding layer is 2-3mm, and finally, high-molecular self-adhesive coiled materials are laid on the surface of the second bonding layer to form a surface layer, so that the laying of the waterproof layer.
The present invention is further preferably: the thickness of the second bonding layer is 2 mm.
The present invention is further preferably: the concrete pouring R corner is made of polymer cement mortar, the surface of the concrete pouring R corner is subjected to fillet treatment, and the additional layer is laid within 2-4 hours after the concrete pouring R corner is finished.
By adopting the technical scheme, the R corner of the cast concrete processed by the fillet does not have edges, so that the stress and dead angle of connection are reduced, and the waterproof layer, the additional layer and the R corner of the cast concrete are more closely connected. Within 2-4 hours, the R angle of the cast concrete reaches a fixed shape with certain strength (the time is related to the temperature, the temperature is high, and the relative time is short), so that the additional layer can be layered when being laid, and a plurality of waterproof structure layers are formed.
The present invention is further preferably: the ratio of cement to sand of the polymer cement mortar is 4: 1.
the present invention is further preferably: the grouting pipes are provided with a plurality of grouting guide pipes communicated with the grouting pipes, and the grouting guide pipes extend out of the secondary structural plate.
The present invention is further preferably: the interval between each grouting guide pipe is 13-17 m.
By adopting the technical scheme, due to the flowing performance of the grout in the pipe, the grouting guide pipe is required to be arranged at a distance, the grouting guide pipe is arranged between every 12m and every 17m after the analysis of the flowing performance of the grout and the pressure required by grouting and the experiment of a plurality of times, the size of the grouting guide pipe is related to the grouting amount required by the distance, and when the connection strength is relatively low, the grouting guide pipe can be arranged at intervals of 17 m. When the connection strength requirement is higher, the grouting quantity is relatively more, and the density is relatively higher, so that a grouting guide pipe is not arranged at an interval of 12m to ensure higher pressure during grouting, and in normal grouting, in order to balance the dosage and the connection strength, a grouting guide pipe is generally arranged every 15 m.
The present invention is further preferably: the moisture-proof layer is made of rigid waterproof paint.
By adopting the technical scheme, the rigid waterproof material is a cement mortar concrete waterproof material with certain permeation resistance prepared by taking cement and gravel as raw materials or adding a small amount of additives, high molecular polymers and other materials into the raw materials, and adjusting the mixing proportion, inhibiting or reducing the porosity, changing the pore characteristics, increasing the compactness among interfaces of the raw materials and the like. This material can have waterproof properties and, after the coating has been dried, it has rigidity and can act as a stand-back for the connection between the two plates, reinforcing the secondary structure.
Drawings
FIG. 1 is a view showing the construction of the anti-permeability and anti-leakage structure after construction;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is an enlarged view at B of FIG. 1;
fig. 4 is a structural view of a grout pipe.
Reference numerals: 1. a base surface; 11. a chisel edge portion; 2. a secondary structural panel; 21. seaming; 3. a moisture barrier; 41. an additional layer; 411. a first layer; 412. a second layer; 42. a waterproof layer; 421. a first adhesive layer; 422. a second adhesive layer; 423. a surface layer; 5. pouring a concrete R corner; 6. a grouting pipe; 61. grouting and guiding the pipe; 62. an outer skin layer; 63. an intermediate layer; 64. a spring wire.
Detailed Description
The invention will now be described in more detail with reference to the accompanying figures 1-4 and examples.
A construction method for secondary structure anti-seepage and anti-leakage comprises the following steps,
1) chiseling the base surface 1 and removing impurities; the roughening forms a plurality of strip-shaped grooves on the base surface 1, so that the connection area of the cement paste and the base surface 1 is increased, and the connection is firmer, as shown in fig. 1 and 2, and the roughening forms a roughening part 11 on the base surface 1 as shown in the figure. Simultaneously pouring or building on the base surface 1 to form a secondary structural plate 2, wherein a joint 21 exists between the secondary structural plate 2 and the base surface 1, and the position of the joint 21 is arranged on the surface where the secondary structural plate 2 is connected with the base surface 1;
2) the grouting pipes 6 are arranged in the joint seams 21, the connection between the secondary structure plate 2 and the base surface 1 can be primarily connected through the grouting pipes 6, and then grouting is performed from inside to outside, so that the inner grout can be filled, the connection between the secondary structure plate 2 and the base surface 1 is firmer, and the phenomenon that the secondary structure plate 2 is not firmly connected with the base surface 1 due to the fact that the grout in the inner part is not filled is avoided; generally, in this step, in order to facilitate the installation of the grouting pipe 6, plastic nails are nailed on the base surface 1 or the secondary structural plate 2, and then the grouting pipe 6 is put into the plastic nail forming gap;
3) the base surface 1 and the secondary structural plate 2 are connected to form an upstream surface and a downstream surface, a cast concrete R angle 5 is arranged at an included angle formed by the base surface 1 and the secondary structural plate 2 on the upstream surface, and the cast concrete R angle 5 can reduce the stress of the included angle after the included angle is arranged in a transition structure, so that stress concentration does not exist; in addition, the arrangement can also ensure that the subsequent waterproof layer can be more attached to the waterproof layer when being laid, so that the waterproof layer can be more compact;
4) covering the over-poured concrete R angle 5 on the base surface 1 of the water-facing surface until the waterproof layer 42 is covered on the secondary structural slab 2;
5) the moisture-proof layer 3 is arranged on the back water surface, the moisture-proof layer 3 covers the gap connected between the base surface 1 and the secondary structure plate 2 and extends to the positions on two sides of the gap, generally, the effect is better when the moisture-proof effect is considered, however, the cost is increased, and therefore, the moisture-proof effect is generally carried out within the range of 250mm on two sides of the gap.
Wherein, slip casting pipe 6 is provided with slip casting poling 61, extends secondary structure board 2 with slip casting poling 61, and the slip casting is leading-in to slip casting pipe 6 from the outside through slip casting poling 61, accomplishes the slip casting process. Due to the flowing performance of the grout in the pipe, the grouting leading pipe 61 is required to be arranged at a distance, after the analysis of the flowing performance of the grout and the pressure required by grouting and a plurality of experiments, the grouting leading pipe 61 is arranged between every 12m and every 17m, the distance is related to the size of the grouting pipe 6 and the grouting quantity, and when the connection strength is relatively low, the grouting leading pipe 61 can be arranged at every 17 m. When the strength requirement of the connection is higher, the grouting quantity is relatively more, and the density is relatively higher, so that a grouting guide pipe 61 is not arranged at an interval of 12m to ensure higher pressure during grouting, and normally, in order to balance the dosage and the connection strength, one grouting guide pipe 61 is arranged at every 15 m.
As shown in fig. 4, the grouting pipe 6 is made of a multi-layer structure, the outer surface layer 62 is made of a material-placing filter membrane, the middle layer 63 is made of a non-woven filter membrane, the spring steel wire 64 is arranged inside, the whole grouting pipe 6 is supported through the spring steel wire 64, the steel wire structure inside the grouting pipe 6 can directly support the whole grouting pipe and cannot be extruded, the structure of each layer is arranged to be softer, the grouting pipe 6 is convenient to place in, and the grouting pipe 6 is easy to press, so that internal blockage is caused, therefore, a plastic nail is arranged in the seam 21 and supported to prevent pressing. The flexible structure of the utility model can make the extended grouting guide pipe 61 have the same effect, and the flexible structure can be drawn downwards, so that the end part of the grouting guide pipe can be prevented from being touched by others to be damaged.
Because a plurality of slip casting inlet pipes 61 are arranged, after the slip casting is finished, part of the slip casting inlet pipes 61 are in a state of being communicated with the outside, and then the rest of the slip casting inlet pipes 61 are pressurized (air pressure or water pressure is adopted in the general part, and the water pressure easily scours the position where the slip casting is finished to cause the passing of slurry), so that the redundant slurry is discharged, the smoothness of the slip casting pipes 6 is kept, and the slip casting can be carried out repeatedly and practically in the follow-up process. This kind of setting can carry out secondary slip casting protection when subsequently appearing the seepage, makes things convenient for subsequent leak protection to remedy.
The concrete pouring R corner 5 is formed by polymer cement mortar, the surface of the concrete pouring R corner is subjected to fillet treatment, and the additional layer 41 is laid within 2-4 hours after the concrete pouring R corner 5 is finished. The fillet treatment can ensure that the subsequent coiled materials and the adhesive layer have certain anti-skidding effect when being laid, and the waterproof layer laid subsequently can not slide down; in addition, the fillet can make its both ends and the connection between base plane and the secondary structure board more level and smooth to stress concentration's phenomenon can not appear, thereby can place the fracture when solidifying. Within 2-4 hours, the R angle 5 of the cast concrete reaches a fixed shape with certain strength, so that the additional layer 41 can be layered when being laid, and a plurality of waterproof structure layers are formed. The holding time of the cast concrete R angle 5 is adaptive to the ambient temperature. The relationship is as follows:
| temperature (degree) | 30 | 25 | 23 | 20 | 16 |
| Time (h) | 2 | 2.5 | 3 | 3.5 | 4 |
An additional layer 41 is arranged between the waterproof layer 42 and the concrete pouring R corner 5, the first layer 411 of the additional layer 41 is paved by polymer cement mortar, the second layer 412 of the additional layer 41 is paved by polymer self-adhesive coiled materials in a wet mode, the paving of the additional layer 41 is completed, the additional layer 41 can be tightly adhered to a base layer after the additional layer 41 is kept for 24 hours, and then the subsequent construction is carried out. In general, there is a certain relationship between the holding time and the temperature. As in the following table:
| temperature (degree) | 28 | 23 | 20 | 17 | 12 | 8 | 5 |
| Retention time (h) | 20 | 22 | 24 | 28 | 32 | 40 | 48 |
It can be concluded that temperatures above 20, generally within 24 hours in summer, cannot be too short, and that in winter it takes 48 hours to get a firm bond in the cold days.
After the laying of the additional layer 41 is completed, a first adhesive layer 421 made of polymer cement paste is laid on the additional layer 41 in a superposed manner, the thickness is more than 5mm, a second adhesive layer 422 made of the same material of polymer cement paste is laid on the additional layer in a similar manner, the thickness is 2mm, and finally, a high-molecular self-adhesive coiled material is laid on the surface to form a surface layer 423, so that the laying of the waterproof layer 42 is completed.
In addition, the proportion of cement and sand of the polymer cement mortar is 4: 1.
the moisture-proof layer 3 is made of rigid waterproof paint. The rigid waterproof material is a cement mortar concrete waterproof material with certain permeation resistance prepared by taking cement and sandstone as raw materials or adding a small amount of materials such as additives, high molecular polymers and the like into the raw materials, and adjusting the mixing proportion, inhibiting or reducing the porosity, changing the pore characteristics, increasing the compactness among interfaces of the raw materials and the like. This material can have waterproof properties and, after the coating has been dried, it has rigidity and can act as a stand-back for the connection between the two plates, reinforcing the secondary structure.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (9)
1. A secondary structure anti-seepage and anti-leakage construction method is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
1) roughening the base surface (1), removing impurities, pouring or building the base surface (1) to form a secondary structural plate (2), wherein a seam (21) exists between the secondary structural plate (2) and the base surface (1), and the position of the seam (21) is arranged on the surface where the secondary structural plate (2) is connected with the base surface (1);
2) arranging a grouting pipe (6) in the joint (21);
3) the base surface (1) and the secondary structural plate (2) are connected to form an upstream surface and a downstream surface, and a concrete pouring R angle (5) is arranged on the upstream surface and at an included angle formed by the base surface (1) and the secondary structural plate (2);
4) covering a cast-over concrete R angle (5) on a base surface (1) on an upstream surface to cover a waterproof layer (42) on a secondary structural plate (2);
5) arranging a moisture-proof layer (3) on the back water surface, wherein the moisture-proof layer (3) covers a gap connected between the base surface (1) and the secondary structure plate (2) and extends to positions at two sides of the gap;
the grouting pipe (6) is provided with a plurality of grouting guide pipes (61) communicated with the grouting pipe, the grouting guide pipes (61) extend out of the secondary structural plate (2), the grouting pipe (6) is formed by adopting a filtering membrane, and after grouting of the grouting pipe (6) is completed, redundant slurry is discharged, so that the grouting pipe (6) is kept smooth.
2. The anti-seepage and anti-leakage construction method of the secondary structure as claimed in claim 1, wherein the construction method comprises the following steps: an additional layer (41) is arranged between the waterproof layer (42) and the concrete pouring R corner (5), and the waterproof layer (42) is paved 20-48 hours after the additional layer (41) is finished.
3. The anti-seepage and anti-leakage construction method of the secondary structure as claimed in claim 2, wherein the construction method comprises the following steps: the additional layer (41) is prepared by firstly paving a first layer (411) by using polymer cement mortar and then paving a second layer (412) by using a high-molecular self-adhesive coiled material in a wet mode, and the additional layer (41) is finished and kept for 24 hours.
4. The anti-seepage and anti-leakage construction method of the secondary structure as claimed in claim 2, wherein the construction method comprises the following steps: after the additional layer (41) is laid, a first adhesive layer (421) made of polymer cement paste is laid on the additional layer (41) in a superposed mode, the thickness of the first adhesive layer is larger than 5mm, a second adhesive layer (422) made of the same material of polymer cement paste is laid in the same mode, the thickness of the second adhesive layer is 2-3mm, finally, the surface layer (423) is laid on the surface through high-molecular self-adhesive coiled materials, and the waterproof layer (42) is laid.
5. The anti-seepage and anti-leakage construction method of the secondary structure as claimed in claim 4, wherein the construction method comprises the following steps: the second adhesive layer (422) has a thickness of 2 mm.
6. The anti-seepage and anti-leakage construction method of the secondary structure as claimed in claim 1, wherein the construction method comprises the following steps: the concrete pouring R corner (5) is formed by polymer cement mortar, the surface of the concrete pouring R corner is subjected to fillet treatment, and the additional layer (41) is laid within 2-4 hours after the concrete pouring R corner (5) is finished.
7. The construction method for secondary structure anti-permeability and anti-leakage as claimed in any one of claims 3 to 6, wherein: the ratio of cement to sand of the polymer cement mortar is 4: 1.
8. the anti-seepage and anti-leakage construction method of the secondary structure as claimed in claim 1, wherein the construction method comprises the following steps: the interval between the grouting guide pipes (61) is 13-17 m.
9. The anti-seepage and anti-leakage construction method of the secondary structure as claimed in claim 1, wherein the construction method comprises the following steps: the moisture-proof layer (3) is made of rigid waterproof paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610427103.5A CN107514149B (en) | 2016-06-15 | 2016-06-15 | Secondary structure anti-seepage and anti-leakage construction method |
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| CN201610427103.5A CN107514149B (en) | 2016-06-15 | 2016-06-15 | Secondary structure anti-seepage and anti-leakage construction method |
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| CN107514149A CN107514149A (en) | 2017-12-26 |
| CN107514149B true CN107514149B (en) | 2020-05-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100396852B1 (en) * | 2002-02-18 | 2003-09-02 | 우신건축환경크리닉(주) | Method for repairing crevis on concrete structures |
| JP4642425B2 (en) * | 2004-01-09 | 2011-03-02 | ロンシール工業株式会社 | Roof-top renovation waterproof structure with parapet with draining jaw and its construction method |
| CN101205766B (en) * | 2006-12-20 | 2010-12-22 | 上海市第一建筑有限公司 | Waterproof treatment method for joint of new station and old station |
| CN101914927B (en) * | 2010-06-22 | 2012-05-30 | 中国建筑第二工程局有限公司 | Waterproof system for basement bottom board and wall surface and construction method thereof |
| CN101994399B (en) * | 2010-10-30 | 2012-09-26 | 河南国基建设集团有限公司 | Method for repairing leaked coiled-material water-proof roof |
| CN102518216A (en) * | 2011-12-27 | 2012-06-27 | 江西中联建设集团有限公司 | Cantilever type cover plate deformation joint structure of accessible roof and construction method for structure |
| CN103243925A (en) * | 2013-04-27 | 2013-08-14 | 中建七局安装工程有限公司 | APF (advanced polarizer film) self-adhesive waterproof coiled material construction method |
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