A construction process for asphalt waterproofing membrane
By forming a crosslinking network between self-adhesive rubber asphalt waterproof roll and cement mortar, the problem of easy deformation of the bonding interface during asphalt waterproof roll construction is solved, high-strength bonding and self-repairing performance is achieved, and the waterproof and anti-seepage effect of the waterproof roll is improved.
Patent Information
- Application Number
- CN202510130497.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-05
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2045-02-05
AI Technical Summary
In the construction of existing asphalt waterproof rolls, the hot melting method is greatly affected by temperature and humidity and is prone to deformation, and the wet laying method is poor in flexibility, resulting in the waterproof layer being prone to failure; in the prior art, the bonding interface between the asphalt waterproof rolls and cement mortar is prone to deform, affecting the waterproof effect.
Self-adhesive rubber asphalt waterproof coils are used, and SBS, sticky resin, calcium silicate whiskers, modifiers and reinforced fillers are added. The construction is carried out through wet laying method, and a cross-linking network is formed with cement mortar to improve bonding strength and flexibility and increase self-healing performance.
It realizes high-strength bonding between asphalt waterproof coil and cement mortar, reduces leakage, and has high bonding strength between coils, has self-repairing performance, improves waterproof and anti-seepage effect, and reduces deformation and cracks.
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Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of waterproof coiled materials, in particular to a construction process of an asphalt waterproof coiled material. Background Art
[0002] The construction of asphalt-based waterproof membranes generally adopts the hot melt method. After the waterproof membrane is laid, the waterproof membrane is bonded to the base layer through a flame heater to form a complete waterproof layer. The problems with this construction method are: the base layer needs to be polished before construction, and the construction and waiting time are long; hot melt construction also has requirements for temperature and humidity. Too low, too high temperature or too high humidity will affect the hot melt effect; with the influence of the environment such as sun and rain, the hot melt overlap is affected by thermal expansion and contraction and material aging, and the overlap is prone to deformation, which leads to failure of the waterproof layer.
[0003] To overcome these drawbacks, existing technologies employ a wet-lay method, where waterproofing membranes are wet-laid onto cement, creating a strong bond with cement mortar and preventing leakage. However, the main issues with this method are: 1. Asphalt waterproofing membranes are flexible, while cement mortar has poor flexibility after solidification. Therefore, the interface between the membrane and cement mortar is susceptible to deformation as the temperature and humidity fluctuate; 2. The cement base and the waterproofing membrane experience different thermal expansion and contraction effects, making cracks more likely to form in the contacting membranes. Both of these issues can significantly impact the waterproofing and anti-seepage effectiveness of the waterproofing membrane. Summary of the Invention
[0004] In view of this, the purpose of the present invention is to address the deficiencies in the existing technology and provide a construction process for asphalt waterproofing membrane. The waterproofing membrane used in this application has good adhesion to cement mortar, good flexibility, certain self-repairing properties, and excellent waterproof and anti-seepage effects.
[0005] In order to achieve the above object, the present invention adopts the following technical solutions:
[0006] A construction process for asphalt waterproofing membrane comprises the following steps:
[0007] (1) Apply cement mortar on the base surface with a thickness of 2-4 mm;
[0008] (2) Remove the isolation film on the lower surface of the asphalt waterproofing membrane, lay the asphalt waterproofing membrane flat on the cement mortar, roll and press to remove air. The asphalt waterproofing membranes are overlapped with each other, with the overlap width of the long side being 70-80mm and the overlap width of the short side being 90-100mm. The short side joints of two adjacent rows of membranes are staggered by more than 1 / 3 of the width. After the membranes are laid, seal the ends of the membranes with sealing paste;
[0009] (3) After 24-48 hours, apply a concrete waterproof protective layer and maintain.
[0010] Furthermore, after the first piece of asphalt waterproofing membrane is laid in step (2), cement mortar is applied and then the second piece is laid.
[0011] Furthermore, the asphalt waterproofing membrane is prepared from self-adhesive rubber asphalt and is made of the following raw materials in parts by weight: 50 parts of asphalt, 10-12 parts of softening oil, 6-8 parts of SBS, 4-6 parts of tackifying resin, 6-8 parts of reinforcing filler, 6-8 parts of calcium silicate whiskers, and 4-6 parts of modifier.
[0012] Furthermore, the tackifying resin is a mixture of terpene resin and petroleum resin in a weight ratio of 4:1.
[0013] Furthermore, the softening oil is a mixture of aromatic oil and naphthenic oil in a weight ratio of 1:1.
[0014] Furthermore, the reinforcing filler is prepared by the following steps: adding 4-5 times the weight of water to sodium alginate to dissolve it, adding sodium bentonite and stirring evenly, drying and then crushing to obtain the reinforcing filler; the weight ratio of the sodium alginate to the sodium bentonite is 1:1-2.
[0015] Furthermore, the modifier is prepared by the following steps:
[0016] (1) Emulsifier and water are mixed evenly in a weight ratio of 1:4-5, and the pH is adjusted to 2.5-3.0 to form component A; ethyl orthosilicate, 3-aminopropyltrimethoxysilane, vinyltrimethoxysilane and paraffin oil are mixed evenly in a weight ratio of 7:1.2-1.5:1:35 to form component B;
[0017] (2) Component A and component B were mixed evenly in a weight ratio of 3:1, and reacted for 10-12 hours to form a gel. After washing, the gel was ultrasonically sonicated with anhydrous ethanol for 30 minutes, and then dried and crushed to obtain a modifier.
[0018] Furthermore, the waterproof membrane is prepared by the following steps:
[0019] Mix asphalt and softening oil and heat it to 180℃, add SBS for thermal insulation and development for 2-3h, grind for 30min, heat it to 190℃, add tackifying resin, calcium silicate whisker and modifier and stir for 1h, finally add reinforcing filler and stir evenly to obtain self-adhesive rubber asphalt, cool it to 140-150℃, apply self-adhesive rubber asphalt on both sides of the polyester tire, and then lay the isolation membrane on the self-adhesive rubber asphalt.
[0020] The beneficial effects of the present invention are:
[0021] 1. The present invention discloses a construction process for an asphalt waterproofing membrane. The asphalt waterproofing membrane has a high bonding strength with cement mortar, so it can be laid by a wet method and can be firmly combined with the cement mortar on the upper and lower surfaces to reduce leakage. Moreover, the bonding strength between the waterproofing membranes is high, and the membranes are overlapped, which makes the construction simple. In addition, the waterproofing membrane of the present application has a self-repairing property, and some cracks on the membrane can be self-repaired, thereby increasing the waterproofing and anti-seepage effect of the present application.
[0022] 2. The asphalt waterproofing membrane in this application is added with thermoplastic elastomer SBS, which is a self-adhesive rubber asphalt material. It is also added with reinforcing filler, calcium silicate whisker and modifier. The reinforcing filler is sodium bentonite loaded with sodium alginate. After the membrane is wet-laid on the cement mortar, the sodium bentonite absorbs water and swells under the contact with water. The sodium alginate in the cement mortar comes into contact with the calcium silicate whisker in the cement mortar. 2+ The formation of a calcium alginate gel-cement polymer cross-linked network improves the cross-linking density and toughness at the interface between the cement mortar and the membrane, reducing membrane deformation and cracking. The waterproof membrane also contains calcium silicate whiskers (100-120μm in diameter, with an aspect ratio of 70-100). These whiskers participate in the hydration of cement to form a gel component, which forms a cross-linked network with calcium alginate, helping to increase the flexibility of the membrane-cement interface and reduce deformation.
[0023] 3. A modifier is also added to the asphalt. The modifier in this application is hydrophilic and lipophilic flaky silica, which is prepared by the sol-gel method. After the water phase and the oil phase are mixed, an oil-in-water emulsion is formed, and then a gel reaction is carried out to form a spherical structure that is lipophilic inside and hydrophilic outside. After being crushed, a nano-sheet structure with one side being hydrophilic and the other side being lipophilic is formed. When cracks appear on the surface of the coil, the lipophilic group of the flaky silica is implanted in the asphalt, and the hydrophilic group has outward adhesion, which can adhere minerals, water, etc. to the cracks to play a role in repairing and sealing. In addition, the reinforcing seasoning has a certain water absorption and expansion property, which can synergistically increase the self-healing performance with the modifier. DETAILED DESCRIPTION
[0024] The present invention will be further described below with reference to specific embodiments. Example 1
[0025] A construction process for asphalt waterproofing membrane comprises the following steps:
[0026] (1) Apply cement mortar on the base surface with a thickness of 3mm;
[0027] (2) Remove the isolation film on the lower surface of the asphalt waterproofing membrane, lay the asphalt waterproofing membrane flat on the cement mortar, and roll the upper surface of the asphalt waterproofing membrane to vent. After the first piece of asphalt waterproofing membrane is laid, apply cement mortar and then lay the second piece. The asphalt waterproofing membranes are overlapped. During the overlap process, first use cement mortar to smooth the overlapped part, then tear off the isolation film at the overlapped part to overlap. The overlap width of the long side is 70mm, and the overlap width of the short side is 90mm. The short side joints of the adjacent two rows of membranes are staggered by 1 / 3 of the width to avoid overlapping of multiple layers of joints and uneven pasting of the membranes. After the membranes are laid, seal the end of the membranes with sealant.
[0028] (3) After 36 hours, apply a concrete waterproof protective layer with a thickness of about 15-20mm and maintain.
[0029] The asphalt waterproofing membrane uses self-adhesive rubber asphalt and is made of the following raw materials in parts by weight: 50 parts of asphalt (90# petroleum asphalt), 10 parts of softening oil, 6 parts of SBS (SBS elastomer 1401), 4 parts of tackifying resin, 6 parts of reinforcing filler, 8 parts of calcium silicate whiskers, and 6 parts of modifier.
[0030] The tackifying resin is a mixture of terpene resin and petroleum resin in a weight ratio of 4:1; the softening oil is a mixture of aromatic oil and naphthenic oil in a weight ratio of 1:1.
[0031] The reinforcing filler is prepared by the following steps: dissolving 5 times the weight of water in sodium alginate, adding sodium bentonite and stirring evenly, drying and then crushing to obtain the reinforcing filler; the weight ratio of the sodium alginate to the sodium bentonite is 1:1.
[0032] The modifier is prepared by the following steps:
[0033] (1) Emulsifier (Tween-80) and water were mixed in a weight ratio of 1:5, and the pH was adjusted to 3.0 to form component A; ethyl orthosilicate, 3-aminopropyltrimethoxysilane, vinyltrimethoxysilane and paraffin oil were mixed in a weight ratio of 7:1.2:1:35 to form component B;
[0034] (2) Component A and component B were mixed evenly in a weight ratio of 3:1, reacted for 10 hours to form a gel, washed and dried, and then ultrasonically washed with anhydrous ethanol for 30 minutes. After drying, the modifier was crushed to obtain the modifier.
[0035] The waterproof membrane is prepared by the following steps:
[0036] Mix asphalt and softened oil and heat it to 180℃, add SBS for thermal insulation and development for 2h, grind for 30min, heat it to 190℃, add tackifying resin, calcium silicate whisker and modifier and stir for 1h, finally add reinforcing filler and stir evenly to obtain self-adhesive rubber asphalt, cool it to 140-150℃, apply 0.8mm self-adhesive rubber asphalt on both sides of 1.4mm thick polyester tire, and then lay isolation membrane on the self-adhesive rubber asphalt. Example 2
[0037] A construction process for asphalt waterproofing membrane comprises the following steps:
[0038] (1) Apply cement mortar on the base surface with a thickness of 4mm;
[0039] (2) Remove the isolation film on the lower surface of the asphalt waterproofing membrane, lay the asphalt waterproofing membrane flat on the cement mortar, and roll the upper surface of the asphalt waterproofing membrane to exhaust. After the first piece of asphalt waterproofing membrane is laid, apply cement mortar and then lay the second piece; the asphalt waterproofing membranes are overlapped, with the overlap width of the long side being 80mm and the overlap width of the short side being 100mm. The short side joints of the adjacent two rows of membranes are staggered by more than 1 / 3 of the width to avoid overlapping of multiple layers of joints and uneven pasting of the membranes. After the membranes are laid, seal the end of the membranes with sealant;
[0040] (3) After 48 hours, apply a concrete waterproof protective layer and maintain.
[0041] The asphalt waterproofing membrane is a self-adhesive rubber asphalt membrane, which is made of the following raw materials in parts by weight: 50 parts of asphalt, 11 parts of softening oil, 7 parts of SBS, 5 parts of tackifying resin, 7 parts of reinforcing filler, 7 parts of calcium silicate whisker, and 5 parts of modifier.
[0042] The tackifying resin is a mixture of terpene resin and petroleum resin in a weight ratio of 4:1; the softening oil is a mixture of aromatic oil and naphthenic oil in a weight ratio of 1:1.
[0043] The reinforcing filler is prepared by the following steps: dissolving sodium alginate in water equal to 4 times its weight, adding sodium bentonite, stirring evenly, drying, and then crushing to obtain the reinforcing filler; the weight ratio of the sodium alginate to the sodium bentonite is 1:2.
[0044] The modifier is prepared by the following steps:
[0045] (1) Emulsifier (Tween-80) and water were mixed in a weight ratio of 1:4, and the pH was adjusted to 3.0 to form component A; ethyl orthosilicate, 3-aminopropyltrimethoxysilane, vinyltrimethoxysilane and paraffin oil were mixed in a weight ratio of 7:1.5:1:35 to form component B;
[0046] (2) Component A and component B were mixed evenly in a weight ratio of 3:1, reacted for 12 hours to form a gel, washed and dried, and then ultrasonically washed with anhydrous ethanol for 30 minutes. After drying, the modifier was crushed to obtain the modifier.
[0047] The waterproof membrane is prepared by the following steps:
[0048] Mix asphalt and softening oil and heat it to 180℃, add SBS for thermal insulation and development for 3 hours, grind for 30 minutes, heat it to 190℃, add tackifying resin, calcium silicate whiskers and modifier and stir for 1 hour, finally add reinforcing filler and stir evenly to obtain self-adhesive rubber asphalt, cool it to 140-150℃, apply 0.8mm self-adhesive rubber asphalt on both sides of 1.4mm thick polyester tire, and then lay isolation membrane on the self-adhesive rubber asphalt. Example 3
[0049] A construction process for asphalt waterproofing membrane comprises the following steps:
[0050] (1) Apply cement mortar on the base surface with a thickness of 3mm;
[0051] (2) Remove the isolation film on the lower surface of the asphalt waterproofing membrane, lay the asphalt waterproofing membrane flat on the cement mortar, and roll the upper surface of the asphalt waterproofing membrane to vent. After the first piece of asphalt waterproofing membrane is laid, apply cement mortar and then lay the second piece. The asphalt waterproofing membranes are overlapped, with the overlap width of the long side being 70mm and the overlap width of the short side being 95mm. The short side joints of the two adjacent rows of membranes are staggered by more than 1 / 3 of the width to avoid overlapping of multiple layers of joints and uneven pasting of the membranes. After the membranes are laid, seal the end of the membranes with sealant.
[0052] (3) After 24 hours, apply a waterproof protective layer to the concrete and maintain it.
[0053] The asphalt waterproofing membrane is a self-adhesive rubber asphalt membrane, which is made of the following raw materials in parts by weight: 50 parts of asphalt, 12 parts of softening oil, 8 parts of SBS, 5.5 parts of tackifying resin, 8 parts of reinforcing filler, 6 parts of calcium silicate whisker, and 5.5 parts of modifier.
[0054] The tackifying resin is a mixture of terpene resin and petroleum resin in a weight ratio of 4:1; the softening oil is a mixture of aromatic oil and naphthenic oil in a weight ratio of 1:1.
[0055] The reinforcing filler is prepared by the following steps: adding 4.5 times the weight of water to sodium alginate to dissolve it, adding sodium bentonite and stirring evenly, drying and then crushing to obtain the reinforcing filler; the weight ratio of the sodium alginate to the sodium bentonite is 1:1.5.
[0056] The modifier is prepared by the following steps:
[0057] (1) Emulsifier (Tween-80) and water were mixed evenly in a weight ratio of 1:5, and the pH was adjusted to 2.5 to form component A; ethyl orthosilicate, 3-aminopropyltrimethoxysilane, vinyltrimethoxysilane and paraffin oil were mixed evenly in a weight ratio of 7:1.3:1:35 to form component B;
[0058] (2) Component A and component B were mixed evenly in a weight ratio of 3:1, reacted for 10 hours to form a gel, washed and dried, and then ultrasonically washed with anhydrous ethanol for 30 minutes. After drying, the modifier was crushed to obtain the modifier.
[0059] The waterproof membrane is prepared by the following steps:
[0060] Mix asphalt and softened oil and heat it to 180℃, add SBS for thermal insulation and development for 2h, grind for 30min, heat it to 190℃, add tackifying resin, calcium silicate whisker and modifier and stir for 1h, finally add reinforcing filler and stir evenly to obtain self-adhesive rubber asphalt, cool it to 140-150℃, apply 0.8mm self-adhesive rubber asphalt on both sides of 1.4mm thick polyester tire, and then lay isolation membrane on the self-adhesive rubber asphalt. Example 4
[0061] The difference between Example 4 and Example 3 is that:
[0062] The asphalt waterproofing membrane is a self-adhesive rubber asphalt membrane, which is made of the following raw materials in parts by weight: 50 parts of asphalt, 12 parts of softening oil, 7.5 parts of SBS, 6 parts of tackifying resin, 7.5 parts of reinforcing filler, 7.5 parts of calcium silicate whisker, and 4 parts of modifier.
[0063] The tackifying resin is a mixture of terpene resin and petroleum resin in a weight ratio of 4:1; the softening oil is a mixture of aromatic oil and naphthenic oil in a weight ratio of 1:1.
[0064] The reinforcing filler is prepared by the following steps: dissolving sodium alginate in water equal to 4 times its weight, adding sodium bentonite, stirring evenly, drying, and then crushing to obtain the reinforcing filler; the weight ratio of the sodium alginate to the sodium bentonite is 1:1.5.
[0065] The modifier is prepared by the following steps:
[0066] (1) Emulsifier (Tween-80) and water were mixed evenly in a weight ratio of 1:4.5, and the pH was adjusted to 2.5 to form component A; ethyl orthosilicate, 3-aminopropyltrimethoxysilane, vinyltrimethoxysilane and paraffin oil were mixed evenly in a weight ratio of 7:1.4:1:35 to form component B;
[0067] (2) Component A and component B were mixed evenly in a weight ratio of 3:1, reacted for 10 hours to form a gel, washed and dried, and then ultrasonically washed with anhydrous ethanol for 30 minutes. After drying, the modifier was crushed to obtain the modifier.
[0068] The waterproof membrane is prepared by the following steps:
[0069] Mix asphalt and softening oil and heat it to 180℃, add SBS for thermal insulation and development for 3 hours, grind for 30 minutes, heat it to 190℃, add tackifying resin, calcium silicate whiskers and modifier and stir for 1 hour, finally add reinforcing filler and stir evenly to obtain self-adhesive rubber asphalt, cool it to 140-150℃, apply 0.8mm self-adhesive rubber asphalt on both sides of 1.4mm thick polyester tire, and then lay isolation membrane on the self-adhesive rubber asphalt.
[0070] Comparative Example 1
[0071] Comparative Example 1 is a comparative example of Example 4, and differs from Example 4 in that:
[0072] No modifiers are added to the raw materials of the waterproof membrane.
[0073] Comparative Example 2
[0074] Comparative Example 2 is a comparative example of Example 4, and differs from Example 4 in that:
[0075] No reinforcing fillers are added to the raw materials of the waterproof membrane.
[0076] Performance testing
[0077] Cement mortar peel strength was tested according to method 5.16.1 of GB / T35467-2017, "Wet-laid Asphalt Waterproofing Membrane." Membrane-to-membrane peel strength was tested according to method 5.13 of GB / T35467-2017. Tensile and thermal aging properties were tested according to the methods in GB23441-2009. Self-healing performance was measured according to the self-closure test method in GB / T 23445-2008, "Polymer-modified Cement Waterproofing Coatings." The time from the onset of water seepage to complete self-healing and closure with no water seepage was measured (to simulate construction conditions, 10% fly ash was added to the water and stirred evenly). The specimens were cut with a 5mm gap. Results are shown in Table 1.
[0078] Table 1 Performance test results
[0079]
[0080] The waterproof membrane prepared in Examples 1-4 of the present application has a thickness of 3 mm, a heat resistance of sliding ≤2 mm at 80°C, a low-temperature flexibility of -30°C without cracks, and is impermeable at 0.3 MPa for 120 minutes. It has high peeling strength with cement and excellent bonding performance, and is not prone to water leakage after construction; it also has excellent elongation performance, good flexibility, and is not prone to cracks; the membrane-to-membrane peeling strength is high, and the overlap method is used for construction, without the need for other sealing materials. In addition, it has excellent heat aging resistance, and the tensile strength and elongation retention rates after 168 hours of heat aging treatment at 80°C are very high, which can meet the requirements of the national standard for self-adhesive polymer modified asphalt waterproof membranes.
[0081] This application uses the time from the beginning of water seepage to complete self-healing and closure without water seepage to represent the self-healing property of the coiled material. During the experiment, since the coiled material itself has a certain flexibility, when a gap is formed, the rebound of the material will cause the gap to become smaller and the water seepage to become less. Then, as the material absorbs water and the minerals in the water body are adsorbed, the gap in the coiled material can be self-repaired, thereby finally achieving the healing of the coiled material. The coiled materials prepared in Examples 1-4 of this application all have the function of self-repairing, and the time is 5-6 hours.
[0082] Comparative Examples 1 and 2 are comparative examples of Example 4. No modifier was added to Comparative Example 1, and its tensile properties were not much different from those of Example 4. However, its heat aging properties were significantly reduced, and its self-healing time was significantly prolonged, indicating that the modifier added in this application can significantly improve the self-repair and heat aging resistance of the coiled material. No reinforcing material was added to Comparative Example 2, and its peel strength with cement mortar was significantly reduced, and its elongation and self-healing properties were also somewhat reduced. This indicates that the reinforcing material can significantly increase the adhesion between the coiled material and the cement mortar, and that the reinforcing filler can also enhance the flexibility of the coiled material. The possible reason for the reduced self-healing property is that the reinforcing filler has certain water absorption and expansion properties, which also helps promote crack repair in the coiled material.
[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention and are not limiting. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.
Claims
1. A construction process for asphalt waterproofing membrane, characterized by: The following steps are involved: (1) Apply cement mortar on the base surface with a thickness of 2-4 mm; (2) Remove the isolation film on the lower surface of the asphalt waterproofing membrane, lay the asphalt waterproofing membrane flat on the cement mortar, roll and press to remove air. The asphalt waterproofing membranes are overlapped with each other, with the overlap width of the long side being 70-80mm and the overlap width of the short side being 90-100mm. The short side joints of two adjacent rows of membranes are staggered by more than 1 / 3 of the width. After the membranes are laid, seal the ends of the membranes with sealing paste; (3) After 24-48 hours, apply a concrete waterproof protective layer and maintain; The asphalt waterproofing membrane is made of self-adhesive rubber asphalt and is made of the following raw materials in parts by weight: 50 parts of asphalt, 10-12 parts of softening oil, 6-8 parts of SBS, 4-6 parts of tackifying resin, 6-8 parts of reinforcing filler, 6-8 parts of calcium silicate whisker, and 4-6 parts of modifier; The reinforcing filler is prepared by the following steps: adding 4-5 times the weight of water to sodium alginate to dissolve it, adding sodium bentonite and stirring evenly, drying and then crushing to obtain the reinforcing filler; the weight ratio of the sodium alginate to the sodium bentonite is 1:1-2.
2. The construction process of an asphalt waterproofing membrane according to claim 1, characterized in that: After the first piece of asphalt waterproofing membrane is laid in step (2), cement mortar is applied and then the second piece is laid.
3. The construction process of the asphalt waterproofing membrane according to claim 1, characterized in that: The tackifying resin is a mixture of terpene resin and petroleum resin in a weight ratio of 4:
1.
4. The construction process of the asphalt waterproofing membrane according to claim 1, characterized in that: The softening oil is a mixture of aromatic oil and naphthenic oil in a weight ratio of 1:
1.
5. The construction process of the asphalt waterproofing membrane according to claim 1, characterized in that: The modifier is prepared by the following steps: (1) Emulsifier and water are mixed evenly in a weight ratio of 1:4-5, and the pH is adjusted to 2.5-3.0 to form component A; ethyl orthosilicate, 3-aminopropyltrimethoxysilane, vinyltrimethoxysilane and paraffin oil are mixed evenly in a weight ratio of 7:1.2-1.5:1:35 to form component B; (2) Component A and component B were mixed evenly in a weight ratio of 3:1, and reacted for 10-12 hours to form a gel. After washing, the gel was ultrasonically sonicated with anhydrous ethanol for 30 minutes, and then dried and crushed to obtain a modifier.
6. The construction process of the asphalt waterproofing membrane according to claim 1, characterized in that: The waterproof coiled material is prepared by the following steps: Mix asphalt and softening oil and heat it to 180℃, add SBS for thermal insulation and development for 2-3h, grind for 30min, heat it to 190℃, add tackifying resin, calcium silicate whisker and modifier and stir for 1h, finally add reinforcing filler and stir evenly to obtain self-adhesive rubber asphalt, cool it to 140-150℃, apply self-adhesive rubber asphalt on both sides of the polyester tire, and then lay the isolation membrane on the self-adhesive rubber asphalt.