阅读说明：本技术 一种热水管道穿墙防水的施工工艺 (Construction process for wall-through waterproofing of hot water pipeline ) 是由 刘扬 高挺杰 于 2020-04-30 设计创作，主要内容包括：本发明涉及建筑工程领域,具体涉及一种热水管道穿墙防水的施工工艺,包括以下步骤：步骤1.准备需要安装的热水管道穿墙防水结构；步骤2.将外接管道固定穿设在墙体内,将内接管道套设在外接管道的内部；步骤3.向内接管道与外接管道之间的空隙中填充第一防水层；步骤4.在外接管道管口与内接管道的交接处涂覆密封材料；步骤5.在密封胶上方覆盖第二防水层；步骤6.在第二防水层上设置保护层,即完成施工。本发明的施工工艺具有更好的稳固效果,且防水效果更好,通过本发明的施工方法对外接管道口进行施工,防水效果很好,很大程度的降低了渗水漏水的情况,减少了对居住者造成的影响,且减少了工作人员的维修次数。(The invention relates to the field of constructional engineering, in particular to a construction process for wall-through waterproofing of a hot water pipeline, which comprises the following steps: step 1, preparing a hot water pipeline wall-through waterproof structure to be installed; step 2, fixedly penetrating the external pipeline into the wall body, and sleeving the internal pipeline into the external pipeline; step 3, filling a first waterproof layer in a gap between the internal pipeline and the external pipeline; step 4, coating a sealing material at the joint of the pipe orifice of the external pipeline and the internal pipeline; step 5, covering a second waterproof layer above the sealant; and 6, arranging a protective layer on the second waterproof layer to finish construction. The construction process has better stabilizing effect and waterproof effect, and the construction method of the invention has good waterproof effect when being used for constructing the external pipeline port, thereby greatly reducing the conditions of water seepage and water leakage, reducing the influence on residents and reducing the maintenance times of workers.)

1. A construction process for wall-through waterproofing of a hot water pipeline is characterized by comprising the following steps:

step 1, preparing a hot water pipeline through-wall waterproof structure to be installed, namely an external pipeline, an internal pipeline, a first waterproof layer, a second waterproof layer, a sealing material and a protective layer.

Step 2, fixedly penetrating the external pipeline into the wall body, and sleeving the internal pipeline into the external pipeline;

step 3, filling a first waterproof layer in a gap between the internal pipeline and the external pipeline until the gap between the internal pipeline and the external pipeline is filled;

step 4, coating a sealing material at the joint of the pipe orifice of the external pipeline and the internal pipeline, wherein when the sealing material is coated, the sealing material is required to be coated on the internal pipeline and the external pipeline, and when the coating is finished, the internal pipeline cannot be loosened in the external pipeline;

step 5, after the sealant is completely dried, covering a second waterproof layer above the sealant, wherein the second waterproof layer needs to completely cover the sealant;

and 6, arranging a protective layer on the second waterproof layer to ensure that the protective layer completely separates the waterproof material from the outside, wherein one end of the protective layer is fixed on the wall body, and the other end of the protective layer is buckled on the internal connecting pipeline in a buckling manner, so that the construction is finished.

2. The construction process of the hot water pipeline through-wall waterproofing according to claim 1, wherein the hot water pipeline through-wall waterproofing structure comprises an external pipeline, the external pipeline is arranged in a wall body in a penetrating manner, an internal pipeline is sleeved inside the external pipeline, and a first waterproofing layer is filled between the internal pipeline and the external pipeline; the pipe orifice of the external pipeline is coated with a sealing material, one end of the sealing material is connected with the pipe orifice of the external pipeline, and the other end of the sealing material is connected with the pipe body of the internal pipeline; the outer layer of the sealing material is also provided with a second waterproof layer which completely covers the sealing material; the second waterproof layer is further provided with a protective layer, the protective layer is annular, one end of the protective layer is fixed on the wall body, and the other end of the protective layer is buckled on the internal connecting pipeline.

3. The construction process of the hot water pipeline wall-through waterproof according to claim 1 or 2, characterized in that the inner wall and the outer wall of the external pipeline are coated with an anticorrosive layer.

4. The construction process of the hot water pipeline through-wall waterproof according to the claim 1 or 2, characterized in that the protective layer is fixed on the wall body by screws.

5. A construction process for hot-water pipe wall-through waterproofing according to claim 1 or 2, wherein the sealing material is composed of water-swellable rubber; the water-swellable rubber comprises the following components in parts by weight:

100 parts of natural rubber, 15-70 parts of modified super absorbent resin, 5-20 parts of imide modified acrylic resin, 2-8 parts of titanium dioxide, 1-5 parts of talcum powder, 0.5-2 parts of N-cyclohexyl-2-benzothiazole sulfonamide and 0.2-1 part of stearic acid.

6. The construction process of the hot water pipeline through-wall waterproof of claim 5, wherein the modified high water absorption resin is composed of water absorption resin, natural rubber and modified polystyrene microspheres.

7. The construction process of hot water pipeline wall-through waterproofing according to claim 6, wherein the preparation method of the modified polystyrene microsphere is:

s1, weighing styrene, adding the styrene into ethanol with the mass concentration of 70-90%, stirring until the styrene is dissolved, adding a sodium hydroxide solution with the mass concentration of 0.1% until the pH value of the liquid is 10-11, stirring for 0.2-0.5 h, standing for 0.5h, separating liquid, taking an organic layer, adding a sodium hydroxide solution with the mass concentration of 0.1% again until the pH value of the liquid is 11-12, stirring for 0.5-1 h, standing for 0.5h, separating liquid, taking the organic layer, and obtaining a styrene pretreatment substance;

wherein the mass ratio of the styrene to the ethanol is 1: 5-12;

s2, weighing N-methyl pyrrolidone, adding the N-methyl pyrrolidone into ethanol with the mass concentration of 70-90%, stirring until the N-methyl pyrrolidone is completely dissolved, using rare gas as protective gas, placing the mixture in a water bath with the temperature of 50-60 ℃, heating and stirring for 0.2-0.5 h, adding the styrene pretreatment, stirring for 0.5-1 h, adding sodium dodecyl sulfate, continuing heating and stirring for 3-8 h, cooling to the room temperature, centrifuging to obtain a solid, washing with deionized water for three times, washing with acetone for three times, and freeze-drying to obtain polystyrene microspheres;

wherein the mass ratio of the N-methylpyrrolidone to the ethanol is 1: 5-10; the mass ratio of the styrene pretreatment substance to the N-methyl pyrrolidone is 2-10: 1; the mass ratio of the sodium dodecyl sulfate to the N-methyl pyrrolidone is 0.02-0.1: 1;

s3, weighing atropine sulfate, adding the atropine sulfate into deionized water, and stirring until the atropine sulfate is completely dissolved to obtain an atropine sulfate solution; adding the polystyrene microspheres into deionized water, stirring uniformly, adding the atropine sulfate solution, performing ultrasonic dispersion for 0.5-1 h, sequentially dropwise adding glycolic acid and benzaldehyde, stirring and reacting at room temperature for 10-18 h, filtering to obtain a solid, washing with acetone for three times, then washing with deionized water for three times, and performing freeze drying to obtain modified polystyrene microspheres;

wherein the solid-to-liquid ratio of the atropine sulfate to the deionized water is 1: 10-35; the mass ratio of the polystyrene microspheres to the atropine sulfate is 1: 0.2-0.5; the mass ratio of the glycollic acid to the benzaldehyde to the atropine sulfate is 0.02-0.1: 0.05-0.2: 1.

8. The construction process of the hot water pipeline through-wall waterproof according to claim 1 or 2, wherein the first waterproof layer and the second waterproof layer are both prepared by waterproof materials; the waterproof material comprises the following components in parts by weight:

60-100 parts of waste rubber, 20-40 parts of modified phenolic resin, 50-70 parts of polyisoprene rubber, 3-10 parts of bis (2,2,6, 6-tetramethyl-4-piperidyl) sebacate, 5-10 parts of a flame retardant, 4-6 parts of a toughening agent and 10-15 parts of a dispersing agent.

9. The construction process of the hot water pipeline wall-through waterproof according to claim 8, wherein the preparation method of the modified phenolic resin comprises the following steps:

s1, weighing palm oil and 1, 5-naphthalenediol into a container, adding sodium trititanate, stirring uniformly, introducing rare gas as protective gas, stirring and reacting for 3-5 h at 180-200 ℃, quickly cooling at 4-10 ℃, centrifuging, and taking supernatant to obtain a product A;

wherein the mass ratio of the palm oil to the 1, 5-naphthalenediol is 1: 5-12; the mass ratio of the sodium trititanate to the palm oil is 0.1-0.25: 1;

s2, adding barium nitrate and acetone into the product A, stirring uniformly, moving to an ice water bath, dropwise adding benzoyl chloride while stirring, continuously stirring for 0.5-1 h after dropwise adding, heating to 40-60 ℃, carrying out reflux reaction for 2-5 h, washing for 3 times by using saturated salt water, washing for 3 times by using deionized water, adding a dried molecular sieve to remove water, and carrying out reduced pressure distillation to remove a solvent to obtain a product B;

wherein the mass ratio of the product A to the barium nitrate to the acetone is 0.2-0.5: 0.03-0.06: 1; the mass ratio of the benzoyl chloride to the product A is 0.025-0.05: 1;

s3, adding the product B into phenolic resin, stirring uniformly, adding methyl p-hydroxybenzoate, and stirring at room temperature for 0.5-1 h to obtain modified phenolic resin;

wherein the mass ratio of the product B, methyl p-hydroxybenzoate and phenolic resin is 1: 0.1-0.3: 10-20.

10. The construction process for wall penetration and water proofing of a hot water pipe according to claim 5, wherein the preparation method of the water-swellable rubber specifically comprises the following steps:

firstly weighing natural rubber according to the amount and carrying out rubber drying treatment; then uniformly mixing the natural rubber subjected to rubber drying treatment and other raw materials by an internal mixer, and plasticating; then, thinning and rolling treatment is carried out through an open mill; and finally, carrying out extrusion molding through an extruder.

Technical Field

The invention relates to the field of constructional engineering, in particular to a construction process for wall-through waterproofing of a hot water pipeline.

Background

In multi-storey and high-rise buildings, a plurality of pipelines which penetrate through a building floor slab comprise a heating pipeline, a fire-fighting water pipe, a drainage pipeline and the like, in the construction process, an external pipeline with the diameter slightly larger than that of an installation pipeline and the length slightly longer than the thickness of the building floor slab is usually pre-embedded in the building floor slab, after the whole construction is completed, various pipelines are installed in the external pipeline, and then a gap between each pipeline and the external pipeline is sealed by a filling material.

The existing building floor has a small gap between the external pipeline opening and the external pipeline, and the existing wall-through pipeline waterproof technology usually sets a sealing waterproof material in the gap between the pipeline and the external pipeline to prevent water seepage.

But external pipeline mouth department also is the place that the infiltration leaked water appears most easily, and it is fixed with the pipeline only to set up the flange in external pipeline mouth department among the prior art usually, and such design water-proof effects is very poor, easily causes the condition of infiltration and leakage in pipeline mouth department, causes not good influence, even causes the incident to resident's life, and needs constructor often to carry out maintenance work.

Disclosure of Invention

In view of the above problems, a first object of the present invention is to provide a hot water pipeline wall-through waterproof structure, which includes an external pipeline, the external pipeline is arranged in a wall body in a penetrating manner, an internal pipeline is sleeved inside the external pipeline, and a first waterproof layer is filled between the internal pipeline and the external pipeline; the pipe orifice of the external pipeline is coated with a sealing material, one end of the sealing material is connected with the pipe orifice of the external pipeline, and the other end of the sealing material is connected with the pipe body of the internal pipeline; the outer layer of the sealing material is also provided with a second waterproof layer which completely covers the sealing material; and the second waterproof layer is also provided with a protective layer.

Preferably, the inner wall and the outer wall of the external pipeline are coated with anticorrosive coatings.

Preferably, the protective layer is annular, one end of the protective layer is fixed on the wall body, and the other end of the protective layer is buckled on the internal connecting pipeline.

Preferably, the protective layer is fixed on the wall body through screws.

The second purpose of the invention is to provide a construction process for hot water pipeline wall-through waterproofing, which comprises the following steps:

step 1, preparing a hot water pipeline through-wall waterproof structure to be installed, namely an external pipeline, an internal pipeline, a first waterproof layer, a second waterproof layer, a sealing material and a protective layer.

Step 2, fixedly penetrating the external pipeline into the wall body, and sleeving the internal pipeline into the external pipeline;

step 3, filling a first waterproof layer in a gap between the internal pipeline and the external pipeline until the gap between the internal pipeline and the external pipeline is filled;

step 4, coating a sealing material at the joint of the pipe orifice of the external pipeline and the internal pipeline, wherein when the sealing material is coated, the sealing material is required to be coated on the internal pipeline and the external pipeline, and when the coating is finished, the internal pipeline cannot be loosened in the external pipeline;

step 5, after the sealant is completely dried, covering a second waterproof layer above the sealant, wherein the second waterproof layer needs to completely cover the sealant;

and 6, arranging a protective layer on the second waterproof layer to ensure that the protective layer completely separates the waterproof material from the outside, wherein one end of the protective layer is fixed on the wall body, and the other end of the protective layer is buckled on the internal connecting pipeline in a buckling manner, so that the construction is finished.

Preferably, the sealing material is composed of a water-swellable rubber.

Preferably, the water-swellable rubber is composed of the following components in parts by weight:

100 parts of natural rubber, 15-70 parts of modified super absorbent resin, 5-20 parts of imide modified acrylic resin, 2-8 parts of titanium dioxide, 1-5 parts of talcum powder, 0.5-2 parts of N-cyclohexyl-2-benzothiazole sulfonamide and 0.2-1 part of stearic acid.

Preferably, the modified super absorbent resin consists of water absorbent resin, natural rubber and modified polystyrene microspheres.

Preferably, the preparation method of the modified polystyrene microsphere comprises the following steps:

s1, weighing styrene, adding the styrene into ethanol with the mass concentration of 70-90%, stirring until the styrene is dissolved, adding a sodium hydroxide solution with the mass concentration of 0.1% until the pH value of the liquid is 10-11, stirring for 0.2-0.5 h, standing for 0.5h, separating liquid, taking an organic layer, adding a sodium hydroxide solution with the mass concentration of 0.1% again until the pH value of the liquid is 11-12, stirring for 0.5-1 h, standing for 0.5h, separating liquid, taking the organic layer, and obtaining a styrene pretreatment substance;

wherein the mass ratio of the styrene to the ethanol is 1: 5-12;

s2, weighing N-methyl pyrrolidone, adding the N-methyl pyrrolidone into ethanol with the mass concentration of 70-90%, stirring until the N-methyl pyrrolidone is completely dissolved, using rare gas as protective gas, placing the mixture in a water bath with the temperature of 50-60 ℃, heating and stirring for 0.2-0.5 h, adding the styrene pretreatment, stirring for 0.5-1 h, adding sodium dodecyl sulfate, continuing heating and stirring for 3-8 h, cooling to the room temperature, centrifuging to obtain a solid, washing with deionized water for three times, washing with acetone for three times, and freeze-drying to obtain polystyrene microspheres;

wherein the mass ratio of the N-methylpyrrolidone to the ethanol is 1: 5-10; the mass ratio of the styrene pretreatment substance to the N-methyl pyrrolidone is 2-10: 1; the mass ratio of the sodium dodecyl sulfate to the N-methyl pyrrolidone is 0.02-0.1: 1;

s3, weighing atropine sulfate, adding the atropine sulfate into deionized water, and stirring until the atropine sulfate is completely dissolved to obtain an atropine sulfate solution; adding the polystyrene microspheres into deionized water, stirring uniformly, adding the atropine sulfate solution, performing ultrasonic dispersion for 0.5-1 h, sequentially dropwise adding glycolic acid and benzaldehyde, stirring and reacting at room temperature for 10-18 h, filtering to obtain a solid, washing with acetone for three times, then washing with deionized water for three times, and performing freeze drying to obtain modified polystyrene microspheres;

wherein the solid-to-liquid ratio of the atropine sulfate to the deionized water is 1: 10-35; the mass ratio of the polystyrene microspheres to the atropine sulfate is 1: 0.2-0.5; the mass ratio of the glycollic acid to the benzaldehyde to the atropine sulfate is 0.02-0.1: 0.05-0.2: 1;

preferably, the preparation method of the water-swellable rubber specifically comprises the following steps:

firstly weighing natural rubber according to the amount and carrying out rubber drying treatment; then uniformly mixing the natural rubber subjected to rubber drying treatment and other raw materials by an internal mixer, and plasticating; then, thinning and rolling treatment is carried out through an open mill; and finally, carrying out extrusion molding through an extruder.

Preferably, the waterproof material consists of the following components in parts by weight:

60-100 parts of waste rubber, 20-40 parts of modified phenolic resin, 50-70 parts of polyisoprene rubber, 3-10 parts of bis (2,2,6, 6-tetramethyl-4-piperidyl) sebacate, 5-10 parts of a flame retardant, 4-6 parts of a toughening agent and 10-15 parts of a dispersing agent.

Preferably, the preparation method of the modified phenolic resin comprises the following steps:

s1, weighing palm oil and 1, 5-naphthalenediol into a container, adding sodium trititanate, stirring uniformly, introducing rare gas as protective gas, stirring and reacting for 3-5 h at 180-200 ℃, quickly cooling at 4-10 ℃, centrifuging, and taking supernatant to obtain a product A;

wherein the mass ratio of the palm oil to the 1, 5-naphthalenediol is 1: 5-12; the mass ratio of the sodium trititanate to the palm oil is 0.1-0.25: 1;

s2, adding barium nitrate and acetone into the product A, stirring uniformly, moving to an ice water bath, dropwise adding benzoyl chloride while stirring, continuously stirring for 0.5-1 h after dropwise adding, heating to 40-60 ℃, carrying out reflux reaction for 2-5 h, washing for 3 times by using saturated salt water, washing for 3 times by using deionized water, adding a dried molecular sieve to remove water, and carrying out reduced pressure distillation to remove a solvent to obtain a product B;

wherein the mass ratio of the product A to the barium nitrate to the acetone is 0.2-0.5: 0.03-0.06: 1; the mass ratio of the benzoyl chloride to the product A is 0.025-0.05: 1;

s3, adding the product B into phenolic resin, stirring uniformly, adding methyl p-hydroxybenzoate, and stirring at room temperature for 0.5-1 h to obtain modified phenolic resin;

wherein the mass ratio of the product B, methyl p-hydroxybenzoate and phenolic resin is 1: 0.1-0.3: 10-20.

The invention has the beneficial effects that:

1. when the waterproof pipeline is constructed, the internal pipeline is installed in the external pipeline, and the gap is filled by adding the first waterproof layer because the gap is reserved between the internal pipeline and the external pipeline, so that the waterproof effect is realized, and the pipeline is also stabilized. Constructing a sealing material in a gap formed between the pipe orifice of the external pipeline and the internal pipeline, wherein the sealing material is fixedly connected with the inner wall of the external pipeline and the internal pipeline, part of the sealing material extends out of one end of the external pipeline close to the second waterproof layer, the sealing material extending out of the external pipeline orifice can expand after meeting water to prevent water from entering the external pipeline orifice, constructing a second waterproof layer at the pipe orifice of the external pipeline, one end of the second waterproof layer is fixed with the wall body, the other end of the second waterproof layer is fixed with the internal pipeline, the pipe orifice of the external pipeline is covered by the second waterproof layer for water prevention, the second waterproof layer has the property of shrinkage, even if the building body is settled after being used for a long time, the second waterproof layer can be prevented from cracking and losing the waterproof effect, and applying a protective layer on the second waterproof layer can play a role, meanwhile, the pipeline and the building body are constructed into an integrated structure, even if the building body is settled, no gap can be formed at the pipe orifice of the external pipeline, the connection between the pipeline and the building body is stabilized, compared with the traditional method for stabilizing through a flange, the method has better stabilizing effect and better waterproof effect, the construction method provided by the invention is used for constructing the external pipeline orifice, the waterproof effect is good, the water seepage and water leakage conditions are reduced to a great extent, the influence on residents is reduced, and the maintenance times of workers are reduced.

2. The sealing material used by the invention is composed of water-swellable rubber, and the components of the water-swellable rubber are natural rubber, modified super absorbent resin, imide modified acrylic resin, titanium dioxide, talcum powder, N-cyclohexyl-2-benzothiazole sulfonamide and stearic acid, and the water-swellable rubber can be more excellent after being combined. Wherein the modified super absorbent resin is obtained by mixing and processing water absorbent resin, natural rubber and modified polystyrene microspheres. The water-absorbing resin has high water absorption effect, can expand after absorbing water when being matched with natural rubber, thereby playing a role of water resistance, is the core of the expanded rubber, but has higher requirements on construction conditions and poorer reusability, so the polystyrene is added to modify the water-absorbing resin, and the water-absorbing resin has better effect, and can also have better adhesive force on the surface with oil. In addition, in order to obtain better effect, the polystyrene is modified, the modification process is firstly to prepare the polystyrene, and then to prepare the polystyrene into a microspherical shape in order to increase the specific surface area and the swelling ratio; then, atropine is used for modifying the polystyrene, so as to overcome the defects of poor toughness and easy cracking of the polystyrene; the obtained modified polystyrene microspheres are added into the water-absorbent resin and the natural rubber to be uniformly mixed, so that the crosslinking degree of the water-absorbent resin and the natural rubber can be enhanced, and the water absorption capacity of the water-absorbent resin and the natural rubber can not be influenced, and therefore, the modified super-absorbent resin can be repeatedly used.

3. The waterproof material is improved, the main material of the waterproof material is waste rubber, the concept of recycling waste is developed, and sustainable development is facilitated. In addition, modified phenolic resin is added, the phenolic resin has the advantages of easiness in forming, high temperature resistance and good corrosion resistance, but the defect of long curing time and hardness and brittleness after curing influences the use of the phenolic resin. The product B plays a role of a diluent, and after the product B is combined with the phenolic resin, the product B is interpenetrated and toughened on active sites of the phenolic resin, so that the flexibility of the phenolic resin is improved, and the flexibility of the waterproof material is improved; the modified phenolic resin can form a three-dimensional cross-linked structure more quickly, and the curing time of the waterproof material is shortened; in addition, a layer of hydrophobic film can be formed on the surface of the waterproof material by the cured modified phenolic resin, so that the moisture absorption rate of the waterproof material is further reduced.

Drawings

The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be obtained on the basis of the following drawings without inventive effort.

FIG. 1 is a schematic view of a hot water pipe wall-through waterproofing structure according to the present invention;

reference numerals: the waterproof pipe comprises an external pipeline 1, an internal pipeline 2, a first waterproof layer 3, a sealing material 4, a second waterproof layer 5, a protective layer 6 and a wall body 10.

Detailed Description

The invention is further described with reference to the following examples.