阅读说明：本技术 一种双层防水免打保护层自粘聚合物改性沥青防水卷材及其制备方法 (Double-layer waterproof protective layer-free self-adhesive polymer modified asphalt waterproof coiled material and preparation method thereof ) 是由 王加富 远义广 潘洪娜 潘洪朋 远晓君 于 2021-07-26 设计创作，主要内容包括：本发明公开了一种双层防水免打保护层自粘聚合物改性沥青防水卷材及其制备方法。包括由下至上依次设置的聚乙烯膜、第一改性沥青层、聚酯胎层、第二改性沥青层、高强度聚乙烯胎层和石英砂层；所述第一改性沥青层和第二改性沥青层为改性沥青胶料,包括以下重量百分数的原料：45～55％道路石油沥青、3～5％防水材料用沥青、3～4％热塑性弹性体、5～8％丁苯橡胶、5～8％成品机油、2～3％石油树脂、0.5～2.0％硅酸盐水泥、10～20％重钙粉、2～8％硅胶改性沥青、2～6％聚乙烯蜡。本发明的防水卷材可以实现一遍防水施工可以起到两遍防水施工的效果,进一步节省人力和物力,加快工程建设进度。(The invention discloses a double-layer waterproof protective layer-free self-adhesive polymer modified asphalt waterproof coiled material and a preparation method thereof. The modified asphalt composite material comprises a polyethylene film, a first modified asphalt layer, a polyester tire layer, a second modified asphalt layer, a high-strength polyethylene tire layer and a quartz sand layer which are sequentially arranged from bottom to top; the first modified asphalt layer and the second modified asphalt layer are modified asphalt rubber compounds and comprise the following raw materials in percentage by weight: 45-55% of road petroleum asphalt, 3-5% of asphalt for waterproof materials, 3-4% of thermoplastic elastomer, 5-8% of styrene butadiene rubber, 5-8% of finished engine oil, 2-3% of petroleum resin, 0.5-2.0% of silicate cement, 10-20% of heavy calcium powder, 2-8% of silica gel modified asphalt and 2-6% of polyethylene wax. The waterproof coiled material can realize one-time waterproof construction, can achieve the effect of two-time waterproof construction, further saves manpower and material resources, and accelerates the engineering construction progress.)

1. The modified asphalt rubber material is characterized by comprising the following raw materials in percentage by weight:

45-55% of road petroleum asphalt, 3-5% of asphalt for waterproof materials, 3-4% of thermoplastic elastomer, 5-8% of styrene butadiene rubber, 5-8% of finished engine oil, 2-3% of petroleum resin, 0.5-2.0% of silicate cement, 10-20% of heavy calcium powder, 2-8% of silica gel modified asphalt and 2-6% of polyethylene wax.

2. The modified asphalt mix according to claim 1, comprising the following raw materials in percentage by weight:

51% of road petroleum asphalt, 4% of asphalt for waterproof materials, 3.5% of thermoplastic elastomer, 6.8% of styrene butadiene rubber, 6.2% of finished engine oil, 2.3% of petroleum resin, 1.2% of Portland cement, 16% of heavy calcium powder, 5% of silica gel modified asphalt and 4% of polyethylene wax.

3. The modified asphalt mix according to claim 1 or 2, wherein the road petroleum asphalt is 70# a grade road petroleum asphalt; the grade of the asphalt for the waterproof material is F400; the portland cement is 425 portland cement; the granularity of the coarse whiting powder is 800 meshes; the finished engine oil is 5W-40 finished engine oil; the thermoplastic elastomer is SBS 4303; the petroleum resin is C9 petroleum resin.

4. A method for preparing a modified asphalt mixture according to any one of claims 1 to 3, comprising the steps of:

mixing the road petroleum asphalt, the waterproof material with asphalt and finished engine oil, and controlling the temperature at 170-175 ℃ for primary stirring; the temperature is increased to 180 ℃ and 185 ℃, and the thermoplastic elastomer is added for secondary stirring; adding silica gel modified asphalt, polyethylene wax, petroleum resin and styrene butadiene rubber, and stirring for the third time; and adding the silicate cement, stirring for the fourth time, finally adding the heavy calcium carbonate powder, stirring for the fifth time, cooling and discharging after stirring.

5. The method according to claim 4, wherein the first stirring is carried out at a speed of 46r/min for 45 min; the time of the second stirring is 65min, and the speed is 65 r/min; the third stirring time is 150min, and the speed is 80 r/min; the fourth stirring time is 30min, and the speed is 46 r/min; the time of the fifth stirring is 60min, and the speed is the same as that of the fourth stirring; the temperature of the temperature reduction is 150-160 ℃.

6. The application of the modified asphalt glue stock of any one of claims 1 to 3 in preparing a double-layer waterproof protective-layer-free self-adhesive polymer modified asphalt waterproof coiled material.

7. A double-layer waterproof protective layer-free self-adhesive polymer modified asphalt waterproof coiled material is characterized by comprising a polyethylene film, a first modified asphalt layer, a polyester tire layer, a second modified asphalt layer, a high-strength polyethylene tire layer and a quartz sand layer which are sequentially arranged from bottom to top; the first modified asphalt layer and the second modified asphalt layer are both the modified asphalt rubber compound as defined in any one of claims 1 to 3; the quartz sand layer consists of quartz sand; the double-layer waterproof protective layer-free self-adhesive polymer modified asphalt waterproof coiled material is 4.0-4.5 mm thick.

8. The double-layer waterproof protective layer self-adhesive polymer modified asphalt waterproof roll material as claimed in claim 7, wherein the surface density of the polyethylene film is 12g/m²(ii) a The thickness of the first modified asphalt layer and the second modified asphalt layer is 1.2 mm; the thickness of the polyester tire layer is 0.6-0.8 mm, the polyester tire used by the polyester tire layer is a long-fiber polyester tire with the specification of 250g/m²(ii) a The granularity of the quartz sand is 80 meshes; the thickness of the high-strength polyethylene tire layer is 0.6-0.8 mm; the high-strength polyethylene tire for the high-strength polyethylene tire layer is prepared by the following method:

selecting polyethylene resin, wherein the indexes of the polyethylene resin are as follows: the melt mass flow rate is 1.7-1.9g/min, and the density is 0.918-0.922g/cm³The tensile yield stress is more than 8.0MPa, the tensile breaking stress is more than 12MPa, and the tensile breaking nominal strain is more than 300 percent; setting the temperature of 7 heating zones of a screw of a high molecular extruder as 170 ℃ in an E1 zone, 180 ℃ in an E2 zone, 190 ℃ in an E3 zone, 200 ℃ in an E4 zone, 205 ℃ in an E5 zone, 210 ℃ in an E6 zone and 215 ℃ in an E7 zone, adding polyethylene resin into an inlet of the screw through a feeding machine for high-temperature melting at the feeding speed of 2.5kg/min, and extruding and molding after the high-temperature melting is finished to obtain the high-strength polyethylene tire.

9. The preparation method of the double-layer waterproof protective layer self-adhesive polymer modified asphalt waterproof roll material of claim 7 or 8 is characterized by comprising the following steps:

(1) uniformly wrapping the modified asphalt rubber material according to any one of claims 1 to 3 on two surfaces of a polyester tire through an oil immersion pool at a discharge port to form a first modified asphalt layer, a polyester tire layer and a second modified asphalt layer;

(2) spraying pressure-sensitive adhesive on the upper surface of the high-strength polyethylene tire, and then dispersing quartz sand on the pressure-sensitive adhesive to form a high-strength polyethylene tire layer covered with a quartz sand layer;

(3) covering a polyethylene film on the other side of the first modified asphalt layer; covering the high-strength polyethylene tire layer covered with the quartz sand layer on the other side of the second modified asphalt layer to obtain the double-layer waterproof protective-layer-free self-adhesive polymer modified asphalt waterproof coiled material.

10. The preparation method according to claim 9, wherein the pressure sensitive adhesive is added into a glue box with the temperature of 150 ℃ to be melted and uniformly sprayed on the surface of the high-strength polyethylene tire, and the thickness of the glue layer is 0.25-0.30 mm; the sand scattering amount of the quartz sand is 0.8kg/m²。

Technical Field

The invention relates to the technical field of waterproof coiled materials, in particular to a double-layer waterproof protective layer-free self-adhesive polymer modified asphalt waterproof coiled material and a manufacturing method thereof.

Background

The water is non-porous and can gradually enter the building by means of wind pressure, convection, impact, adhesion, capillary force and other forces. The water-proof of the building is related to the energy saving of the building, and the heat insulating material can be corroded and damaged by water leakage of doors, windows and outer walls in the building, so that the heat conducting property of the heat insulating material is changed, and the service life of the building is shortened. Secondly, the combination of the waterproof material and the concrete structure, namely soft and hard, is the safest guarantee for the building, once the waterproof problem occurs, moisture enters the interior of the building to corrode the steel bar structure of the building, so that huge potential safety hazards are caused, the service life of the building is shortened, and criminal responsibility of safety responsibility accidents is also considered. The most important point is that the building water prevention is related to environmental protection, and at present, many chemical enterprises and mineral enterprises leak to cause the leakage of harmful wastewater, and then enter an underground water system to seriously pollute the environment. The maintenance of waterproof engineering is very difficult, and because leakage points cannot be found in many places, the waterproof construction must be successful once, so that the waterproof effect can be really achieved.

In order to further ensure the waterproof safety of building engineering, a lot of building engineering carries out waterproof construction on both sides to pour the protective layer in time after waterproof construction in the underground and just can carry out the process of weaving and binding the reinforcing bar, if not pour the concrete protective layer, weave the reinforcing bar and can destroy the waterproof material surface, pour the concrete and caused the waste of manpower and material resources. The elongation rate of the modified asphalt waterproof coiled material is 40% at most when the modified asphalt waterproof coiled material is in maximum tension, and once the building structure is subjected to irregular settlement, the waterproof layer is damaged, so that the water leakage phenomenon is caused; the modified asphalt waterproof coiled material has a plurality of hollowing phenomena in the construction process, so that the waterproof coiled material is not combined with a building; and the modified asphalt waterproof coiled material is greatly influenced by the construction environment temperature, once the temperature is lower than 5 ℃, the bonding force can be reduced, so that the phenomenon that the flexible waterproof coiled material is not firmly bonded with structural concrete of a building is caused, and the phenomena of water seepage and water leakage are caused. After the waterproof material is constructed, the concrete protective layer is immediately poured by the traditional modified asphalt waterproof coiled material, and a plurality of porous heterogeneous concrete materials appear in the concrete in the pouring process, so that the waterproof effect is realized once the concrete is formed. Leakage, water can enter the interior of the building along with the porous heterogeneous materials, and the building is damaged. Therefore, a double-layer waterproof protective layer-free self-adhesive polymer modified asphalt waterproof coiled material and a manufacturing method thereof are needed at present, one-time waterproof construction can achieve the effect of two-time waterproof construction, and manpower and material resources are further saved.

Disclosure of Invention

Aiming at the prior art, the invention aims to provide a double-layer waterproof protective layer-free self-adhesive polymer modified asphalt waterproof coiled material and a preparation method thereof. The waterproof coiled material can realize one-time waterproof construction, can achieve the effect of two-time waterproof construction, further saves manpower and material resources, and accelerates the engineering construction progress.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a modified asphalt sizing material, which comprises the following raw materials in percentage by weight:

45-55% of road petroleum asphalt, 3-5% of asphalt for waterproof materials, 3-4% of thermoplastic elastomer, 5-8% of styrene butadiene rubber, 5-8% of finished engine oil, 2-3% of petroleum resin, 0.5-2.0% of silicate cement, 10-20% of heavy calcium powder, 2-8% of silica gel modified asphalt and 2-6% of polyethylene wax.

Preferably, the material comprises the following raw materials in percentage by weight:

51% of road petroleum asphalt, 4% of asphalt for waterproof materials, 3.5% of thermoplastic elastomer, 6.8% of styrene butadiene rubber, 6.2% of finished engine oil, 2.3% of petroleum resin, 1.2% of Portland cement, 16% of heavy calcium powder, 5% of silica gel modified asphalt and 4% of polyethylene wax.

Preferably, the road petroleum asphalt is 70# A grade road petroleum asphalt; the grade of the asphalt for the waterproof material is F400; the portland cement is 425 portland cement; the granularity of the coarse whiting powder is 800 meshes; the finished engine oil is 5W-40 finished engine oil; the thermoplastic elastomer is SBS 4303; the petroleum resin is C9 petroleum resin.

In a second aspect of the present invention, there is provided a process for preparing a modified asphalt compound, comprising the steps of:

mixing the road petroleum asphalt, the waterproof material with asphalt and finished engine oil, and controlling the temperature at 170-175 ℃ for primary stirring; the temperature is increased to 180 ℃ and 185 ℃, and the thermoplastic elastomer is added for secondary stirring; adding silica gel modified asphalt, polyethylene wax, petroleum resin and styrene butadiene rubber, and stirring for the third time; and adding the silicate cement, stirring for the fourth time, finally adding the heavy calcium carbonate powder, stirring for the fifth time, cooling and discharging after stirring.

Preferably, the time of the first stirring is 45min, and the speed is 46 r/min; the time of the second stirring is 65min, and the speed is 65 r/min; the third stirring time is 150min, and the speed is 80 r/min; the fourth stirring time is 30min, and the speed is 46 r/min; the time of the fifth stirring is 60min, and the speed is the same as that of the fourth stirring; the temperature of the temperature reduction is 150-160 ℃.

The third aspect of the invention provides an application of the modified asphalt sizing material in preparing a double-layer waterproof protective layer-free self-adhesive polymer modified asphalt waterproof coiled material.

The invention provides a double-layer waterproof protective layer-free self-adhesive polymer modified asphalt waterproof coiled material, which comprises a polyethylene film, a first modified asphalt layer, a polyester tire layer, a second modified asphalt layer, a high-strength polyethylene tire layer and a quartz sand layer which are sequentially arranged from bottom to top; the first modified asphalt layer and the second modified asphalt layer are modified asphalt rubber; the quartz sand layer consists of quartz sand; the double-layer waterproof protective layer-free self-adhesive polymer modified asphalt waterproof coiled material is 4.0-4.5 mm thick.

Preferably, the polyethylene film has an areal density of 12g/m²(ii) a The thickness of the first modified asphalt layer and the second modified asphalt layer is 1.2 mm; the thickness of the polyester tire layer is 0.6-0.8 mm, and the polyester tire used by the polyester tire layer is a long-fiber polyester tire; the granularity of the quartz sand is 80 meshes; the thickness of the high-strength polyethylene tire layer is 0.6-0.8 mm; the high-strength polyethylene tire for the high-strength polyethylene tire layer is prepared by the following method:

selecting polyethylene resin, wherein the indexes of the polyethylene resin are as follows: the melt mass flow rate is 1.7-1.9g/min, and the density is 0.918-0.922g/cm³The tensile yield stress is more than 8.0MPa, the tensile breaking stress is more than 12MPa, and the tensile breaking nominal strain is more than 300 percent; setting the temperature of 7 heating zones of a screw of a high molecular extruder as 170 ℃ in an E1 zone, 180 ℃ in an E2 zone, 190 ℃ in an E3 zone, 200 ℃ in an E4 zone, 205 ℃ in an E5 zone, 210 ℃ in an E6 zone and 215 ℃ in an E7 zone, adding polyethylene resin into an inlet of the screw through a feeding machine for high-temperature melting at the feeding speed of 2.5kg/min, and extruding and molding after the high-temperature melting is finished to obtain the high-strength polyethylene tire.

The fifth aspect of the invention provides a preparation method of a double-layer waterproof protective layer self-adhesive polymer modified asphalt waterproof coiled material, which comprises the following steps:

(1) uniformly wrapping modified asphalt rubber materials on two surfaces of the polyester tire by the polyester tire through a discharge port oil immersion pool to form a first modified asphalt layer, a polyester tire layer and a second modified asphalt layer;

(2) spraying pressure-sensitive adhesive on the upper surface of the high-strength polyethylene tire, and then dispersing quartz sand on the pressure-sensitive adhesive to form a high-strength polyethylene tire layer covered with a quartz sand layer;

(3) covering a polyethylene film on the other side of the first modified asphalt layer; covering the high-strength polyethylene tire layer covered with the quartz sand layer on the other side of the second modified asphalt layer to obtain the double-layer waterproof protective-layer-free self-adhesive polymer modified asphalt waterproof coiled material.

Preferably, the pressure-sensitive adhesive is added into a rubber box with the temperature of 150 ℃ to be melted and uniformly sprayed on the surface of the high-strength polyethylene tire, and the thickness of the rubber layer is 0.25-0.30 mm; the sand scattering amount of the quartz sand is 0.8kg/m²。

The invention has the beneficial effects that:

(1) the double-layer waterproof protective layer-free self-adhesive polymer modified asphalt waterproof coiled material prepared by the invention can realize the effect of one-time waterproof construction and two-time waterproof construction, further saves manpower and material resources and accelerates the engineering construction progress.

(2) The waterproof coiled material comprises a polyethylene film, a first modified asphalt layer, a polyester tire layer, a second modified asphalt layer, a high-strength polyethylene tire layer and a quartz sand layer from bottom to top in sequence, and has a 6-layer structure, wherein the polyethylene film, the polyester tire layer and the high-strength polyethylene tire layer are respectively combined with the modified asphalt waterproof coiled material to form two waterproof layers, one-time construction is equivalent to two-side waterproof effect, the high elongation of the high-strength polyethylene tire layer and the polyester tire layer is complementary with the defect of poor elongation of the modified asphalt waterproof coiled material, and once a building is settled, the asphalt waterproof coiled material is damaged, and the waterproof effect can be achieved.

(3) According to the preparation method, the polyethylene film, the polyester tire layer and the high-strength polyethylene tire layer are selected to be respectively combined with the modified asphalt, the quartz sand is coated on the other surface of the high-strength polyethylene tire layer, after construction is completed, the quartz sand on the upper surface is exposed to the outside, a concrete protective layer is not required to be poured, manpower and material resources are saved, until steel bars are woven and bound, concrete is directly poured, the quartz sand can be fused with the concrete, and the concrete is tightly combined with the waterproof coiled material of the structure.

Drawings

FIG. 1 is a schematic structural view of a double-layer waterproof protective layer-free self-adhesive polymer modified asphalt waterproof roll;

the composite material comprises a 1-polyethylene film, a 2-first modified asphalt layer, a 3-polyester tire layer, a 4-second modified asphalt layer, a 5-high-strength polyethylene tire layer and a 6-quartz sand layer.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

As described in the background art, many construction works perform waterproof construction on both sides, and the procedure of braiding the reinforcing steel bars can be performed only by pouring the protective layer in time after the waterproof construction is completed underground, and if the concrete protective layer is not poured, the braided reinforcing steel bars can damage the surface of the waterproof material, and the waste of manpower and material resources is caused by pouring concrete.

Based on the above, the invention provides a double-layer waterproof protective layer-free self-adhesive polymer modified asphalt waterproof coiled material, which comprises a polyethylene film 1, a first modified asphalt layer 2, a polyester tire layer 3, a second modified asphalt layer 4, a high-strength polyethylene tire layer 5 and a quartz sand layer 6 which are sequentially arranged from bottom to top; the first modified asphalt layer 2 and the second modified asphalt layer 3 are modified asphalt rubber; the quartz sand layer 6 consists of quartz sand; the double-layer waterproof protective layer-free self-adhesive polymer modified asphalt waterproof coiled material is 4.0-4.5 mm thick.

In order to make the technical solutions of the present application more clearly understood by those skilled in the art, the technical solutions of the present application will be described in detail below with reference to specific embodiments.

The test materials used in the examples of the present invention are all conventional in the art and commercially available.

Description of the drawings: 5W-40 finished engine oil (Kunlun lube oil) manufacturer is China Petroleum lube company;

the thermoplastic elastomer SBS4303 manufacturer is Beijing Yanshan petrochemical rubber and plastic chemical industry Limited liability company;

c9 (C nine) Petroleum resin was purchased from Shandong Liang New Material science and technology, Inc.;

the silica gel modified asphalt is purchased from Innovative materials science and technology Limited of Qingdao nations.

The polyester tire is purchased from Tianding Fengchun limited company and has the specification of 250g/m²。

Styrene butadiene rubber was purchased from trades ltd, high, shandong.

Example 1

Preparing modified asphalt:

51% of 70# A road petroleum asphalt, 4% of asphalt for F400 waterproof materials, 3.5% of thermoplastic elastomer, 6.8% of styrene-butadiene rubber, 6.2% of finished engine oil, 2.3% of petroleum resin, 1.2% of 425 portland cement, 16% of 800-mesh heavy calcium powder, 5% of silica gel modified asphalt and 4% of polyethylene wax are weighed.

Firstly, 70# A road petroleum asphalt, F400 waterproof material asphalt and finished engine oil are added into a reaction kettle, the temperature is controlled at 175 ℃, the stirring is carried out for 45min at the stirring speed of 46r/min, and the three raw materials are mainly stirred and dispersed uniformly.

And then the temperature is increased to 180 ℃ and 185 ℃, the thermoplastic elastomer is added into the reaction kettle, the stirring speed is 65r/min, the stirring is 65min, and the asphalt is modified.

Then adding silica gel modified asphalt, polyethylene wax, petroleum resin and styrene butadiene rubber, regulating the rotation speed to 80r/min, mainly improving the viscosity of the asphalt rubber material and improving the heat resistance of the rubber material, adding 425 silicate cement after stirring for 150min, regulating the rotation speed to 46r/min, adding 800-mesh heavy calcium powder after stirring for 30min, stirring for 60min, compacting the asphalt rubber material, finally cooling to 150-mesh 160 ℃, and discharging to obtain the modified asphalt rubber material.

Example 2

Preparation of high-strength polyethylene tire:

selecting polyethylene resin, wherein the indexes of the polyethylene resin meet the following standards, the melt mass flow rate is 1.7-1.9g/min, the density is 0.918-0.922g/cm3, the tensile yield stress is more than 8.0MPa, the tensile fracture stress is more than 12MPa, and the tensile fracture nominal strain is more than 300%. Firstly, setting the temperature of 7 heating zones of a screw of a high polymer extruder, wherein the temperature is 170 ℃ in an E1 zone, 180 ℃ in an E2 zone, 190 ℃ in an E3 zone, 200 ℃ in an E4 zone, 205 ℃ in an E5 zone, 210 ℃ in an E6 zone and 215 ℃ in an E7 zone, adding polyethylene resin into an inlet of the screw through a feeding machine for high-temperature melting after the temperature zones are set, wherein the feeding speed is 2.5kg/min, and preparing a sheet material with the thickness of 0.6mm, namely the high-strength polyethylene tire, through an outlet of an extrusion film grinding head device after the high-temperature melting is finished.

Example 3

Preparing a double-layer waterproof protective layer-free self-adhesive polymer modified asphalt waterproof coiled material:

the high-strength polyethylene tire prepared in the embodiment 2 is cooled to 70-75 ℃ of the surface temperature of the plate by air cooling, the pressure-sensitive adhesive is added into a rubber box with the temperature of 150 ℃ to be melted and uniformly sprayed on the surface of the plate, the thickness of the adhesive layer is 0.30mm, after the glue spraying is finished, 80-mesh quartz sand is uniformly sprayed on the surface of the plate, and the amount of the sprayed sand is controlled to be 0.8kg/m²The sanding amount is uniform and proper, sand on the surface of the plate is scattered when the sanding amount is too large, and uneven sand coating on the surface of the plate is caused when the sanding amount is too small. And after the sand coating is finished, the plate is pulled to a film coating storage rack for standby through a traction roller.

The asphalt rubber prepared in example 1 was uniformly wrapped on both sides of a polyester tire having a thickness of 0.6mm by an oil immersion pool at a discharge port to form a first modified asphalt layer and a second modified asphalt layer, both of which had a thickness of 1.2 m.

The density of the other surface of the first modified asphalt layer is 12g/m²The polyethylene film of (1); and covering the other side of the second modified asphalt layer with a plate taken out of the film storage rack, and bonding one side of the plate with the high-strength polyethylene tire with the second modified asphalt layer. Finally, a finished product is prepared, and the average thickness is 4.0 mm.

The physical and mechanical properties of the double-layer waterproof protective layer-free self-adhesive polymer modified asphalt waterproof coiled material prepared in example 3 were tested according to the requirements of the standard GB/T23457-2017 Pre-paved waterproof coiled material, and the obtained results are shown in Table 1.

TABLE 1

As can be seen from Table 1, the tensile property of the waterproof roll material prepared in example 3 is much higher than that of the asphalt-based polyester-based waterproof roll material (PY type) specified in GB/T23457-2017 Pre-paved waterproof roll material; the waterproof property is good, and the properties of water channeling resistance, peeling strength with post-cast concrete after being soaked in water, peeling strength between a coiled material and the like are far higher than those required by the PY waterproof coiled material. However, the waterproof coiled material can achieve the waterproof effect on two sides under the condition of only one construction; not only saves time and labor, but also has good waterproof effect.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.