High-performance crack pouring adhesive for repairing cold cracks and preparation method of crack pouring adhesive
A high-performance cold-resistant crack repair sealant, prepared using a specific formulation and preparation method, solves the problem of insufficient performance of existing sealants when used in cold regions, and achieves effective repair and extended service life of structures in cold regions.
Patent Information
- Application Number
- CN202511375340.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-25
- Publication Date
- 2026-01-20
AI Technical Summary
Existing sealants have shortcomings in performance, especially when used in cold regions, they are prone to failure such as material leakage, cracking, and breakage. They are also expensive, which limits the service life of the structure.
A high-performance cold-type crack repair sealant was prepared by using 100 parts by weight of base asphalt, 11-13 parts by weight of modifier, 12-16 parts by weight of 80-mesh rubber powder, 7-9 parts by weight of aromatic oil, 16-18 parts by weight of DOM, 3 parts by weight of terpene resin and 0.3 parts by weight of stabilizer through a specific preparation method.
The prepared grout exhibits excellent resistance to foreign object embedding, high-temperature softening, high-temperature flowability, elastic recovery, and low-temperature tensile properties in cold regions. It can be used in environments with minimum temperatures not lower than -30°C, and its performance is superior to existing products.
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Figure CN121362566A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of building construction, in particular to a high-performance cold-type crack repair crack pouring glue and a preparation method thereof. BACKGROUND
[0002] Cracks are one of the most common and earliest damages in the damage of various pavements, roof structures and the like, which almost accompany the entire operation period of the structure and gradually increase with time. Cracks can reduce the safety and comfort of the structure, and the cracks in the structure not only easily extend to the deep part to cause damage to the structure and reduce the service life, but also reduce the aesthetics of the structure.
[0003] At present, many foreign countries have mastered relatively mature crack pouring construction technology, and the cracks generated can be quickly and effectively treated by crack pouring. In recent years, China has imported many foreign crack pouring products, equipment, technology and processes, which have had a positive impact on domestic crack repair work. At present, the imported crack pouring products and equipment are expensive and lack of after-sales service, and a series of problems hinder the development of crack repair work in China to some extent.
[0004] Crack pouring material repair is simple and effective, and is a widely used crack treatment measure in China at present. Crack pouring construction is effective for improving small, micro cracks in pavements, roofs and the like, and helps to improve the crack repair level in China. However, most domestic crack pouring glues still have deficiencies and defects in performance, and often have failure forms such as material running, cracking, breaking, side cracking and edge biting in actual use, and are not suitable for use in cold regions, which limits the service life of the structure. Almost every 1-3 years, or even every year, the cracks need to be repaired by crack pouring. SUMMARY
[0005] In order to overcome the defects of the prior art, a high-performance cold-type crack repair crack pouring glue and a preparation method thereof are provided to solve the problem that the existing crack pouring glue has performance deficiencies and is not suitable for use in cold regions.
[0006] To achieve the above object, a high-performance cold-type crack repair crack pouring glue is provided, which comprises 100 parts by mass of base pitch, 11-13 parts by mass of a modifier, 12-16 parts by mass of 80-mesh rubber powder, 7-9 parts by mass of aromatic oil, 16-18 parts by mass of DOM, 3 parts by mass of terpene resin and 0.3 parts by mass of stabilizer.
[0007] Further, it comprises 100 parts by mass of base pitch, 13 parts by mass of a modifier, 14 parts by mass of 80-mesh rubber powder, 7 parts by mass of aromatic oil, 15 parts by mass of DOM, 3 parts by mass of terpene resin and 0.3 parts by mass of stabilizer.
[0008] Further, the base asphalt is Panjin 90# asphalt.
[0009] Further, the modifier is YH-791H modifier.
[0010] Further, the 80-mesh rubber powder is steel cord crown rubber powder.
[0011] Further, the stabilizer is at least one of carbon black, fiber, sulfur, and lime.
[0012] The preparation method of the high-performance cold-type crack repair pouring sealant of the present application comprises the following steps:
[0013] The base asphalt is heated to 140°C, and then the modifier and aromatic oil are added and stirred uniformly, and the modified asphalt is obtained by swelling in the 140°C environment for 30 minutes;
[0014] The modified asphalt is sheared at 185°C and a shear rate of 4000 r / min for more than 1 hour until fully fused;
[0015] The 80-mesh rubber powder and terpene resin are added to the modified asphalt and sheared for more than 30 minutes until fully fused;
[0016] The modified asphalt is cooled to 160°C, and then the DOM is added and sheared until fully fused;
[0017] The stabilizer is added to the modified asphalt and sheared until fully fused to obtain the high-performance cold-type crack repair pouring sealant.
[0018] The high-performance cold-type crack repair pouring sealant of the present application determines the best ratio of the trial pouring sealant according to the performance analysis results of the pouring sealant, and performs performance detection, and each performance of the anti-foreign object embedding property, high-temperature softening property, high-temperature fluidity, elastic recovery property, and low-temperature tensile property is good, and can be applied to an area with a minimum temperature not lower than -30°C. There are high-temperature, normal-temperature, and low-temperature pouring sealants on the market, but the first three cannot be applied to cold areas, and the pouring sealant of the present application can be applied to cold areas, and each performance is better than the first three. BRIEF DESCRIPTION OF DRAWINGS
[0019] Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments made with reference to the accompanying drawings:
[0020] Figure 1 The factor-cone penetration effect curve diagram of the embodiments of the present application.
[0021] Figure 2 The factor-softening point effect curve diagram of the embodiments of the present application.
[0022] Figure 3 Factor-Flow Effect Curve of the Embodiment of the Present Invention.
[0023] Figure 4 Factor-Elastic Recovery Effect Curve of the Embodiment of the Present Invention.
[0024] Figure 5 Tensile Effect Diagram of the High-Performance Cold-Type Crack Repair Pouring Sealant of the Embodiment of the Present Invention at-10℃.
[0025] Figure 6 Tensile Effect Diagram of the High-Performance Cold-Type Crack Repair Pouring Sealant of the Embodiment of the Present Invention at-20℃.
[0026] Figure 7 Tensile Effect Diagram of the High-Performance Cold-Type Crack Repair Pouring Sealant of the Embodiment of the Present Invention at-30℃. DETAILED DESCRIPTION
[0027] The present application will be further described below in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related application, and are not a limitation on the application. In addition, it should be noted that only the parts related to the application are shown in the drawings for ease of description.
[0028] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and embodiments.
[0029] The present application provides a high-performance cold-type crack repair pouring sealant, which comprises 100 parts by mass of base pitch, 11-13 parts by mass of modifier, 12-16 parts by mass of 80-mesh rubber powder, 7-9 parts by mass of aromatic oil, 16-18 parts by mass of DOM, 3 parts by mass of terpene resin, and 0.3 parts by mass of stabilizer.
[0030] In the present embodiment, the base pitch is Panjin 90# pitch.
[0031] The modifier is YH-791H modifier.
[0032] The 80-mesh rubber powder is steel cord crown rubber powder.
[0033] The terpene resin is terpene resin T100.
[0034] The stabilizer is at least one of carbon black, fiber, sulfur, and lime.
[0035] As a preferred embodiment, the high-performance cold-type crack repair crack pouring glue of the present application comprises 100 parts by mass of base asphalt, 13 parts by mass of modifier, 14 parts by mass of 80-mesh rubber powder, 7 parts by mass of aromatic oil, 16 parts by mass of DOM, 3 parts by mass of terpene resin, and 0.3 parts by mass of stabilizer.
[0036] The YH-791H modifier in the high-performance cold-type crack repair crack pouring glue of the present application is a thermoplastic elastomer with both elasticity and plasticity, which is linear SBS with a block ratio (S / B) of 30 / 70 and an elongation at break of ≥700.
[0037] The 80-mesh rubber powder in the high-performance cold-type crack repair crack pouring glue of the present application has a rubber hydrocarbon content of ≥42%, and has good effects of improving the elasticity recovery, softening point, and anti-rutting factor of asphalt, and has good fusion degree with asphalt.
[0038] The aromatic oil in the high-performance cold-type crack repair crack pouring glue of the present application has an aromatic hydrocarbon content of >85%, which improves the solubility of SBS and rubber powder, makes the raw materials better fused together, and can reduce the mixing time in the rubber processing process, improve the production efficiency, and reduce the energy consumption.
[0039] The DOM in the high-performance cold-type crack repair crack pouring glue of the present application is an auxiliary agent for changing the flexibility and tensile property of materials, which does not chemically react with polymers, can be well fused with polymers at high temperature, is a colorless transparent liquid, and is commonly used in plastic auxiliary agents, and has advantages in performance compared with other plasticizers.
[0040] The terpene resin in the high-performance cold-type crack repair crack pouring glue of the present application not only helps the crack pouring glue to bond with the crack, but also causes the cohesion of the crack pouring glue itself to increase, has the characteristics of heat resistance, light resistance, acid resistance, alkali resistance, odor resistance, non-toxicity, good anti-aging property, and strong bonding force, and the general dosage is fixed.
[0041] The stabilizer in the high-performance cold-type crack repair crack pouring glue of the present application has good stability, can improve the storage stability of the crack pouring glue, and can also improve the high and low temperature performance of the crack pouring glue, and the general dosage is small.
[0042] The present application provides a preparation method of a high-performance cold-type crack repair crack pouring glue, which comprises the following steps:
[0043] S1, heat the base asphalt to 140℃, then add the modifier and aromatic oil and stir uniformly, and swell in the 140℃ environment for 30min to obtain modified asphalt.
[0044] S2, under the condition of 185℃ and shear rate 4000r / min, shear the modified asphalt for more than 1h to fully fuse.
[0045] S3, 80 mesh rubber powder and terpene resin are added into the modified asphalt and sheared for 30 min or more to obtain full fusion.
[0046] S4, the modified asphalt is cooled to 160℃, DOM is added again and sheared to full fusion.
[0047] S5, the stabilizer is added into the modified asphalt and sheared to full fusion to obtain the high-performance cold-type crack repair sealant.
[0048] In order to further illustrate the performance of the high-performance cold-type crack repair sealant of the present application, specific examples are described.
[0049] The high-performance cold-type crack repair sealant of the present application adopts a four-factor three-level orthogonal table for test design, and the addition ratio of several main factors such as modifier (G), 80 mesh rubber powder (X), aromatic oil (Y) and DOM (S) is shown in Table 1, which is prepared by the aforementioned preparation method to prepare 1-9 groups of sealant examples, i.e. Examples 1-9.
[0050] Table 1, orthogonal test table for preparing sealant
[0051]
[0052] According to the conventional test items of the sealant specified in the "Pavement Heating Type Sealant" JT / T 740-2015 standard, the performance of the prepared 9 groups of sealant samples is tested, and the intuitive analysis and variance analysis method in the orthogonal test is used to analyze the anti-foreign object embedding performance, high temperature softening performance, high temperature flow performance, elastic recovery performance and low temperature tensile performance of the prepared 9 groups of sealant samples.
[0053] The test results and analysis are as follows:
[0054] 1. Anti-foreign object embedding performance
[0055] Table 2-1, cone penetration test results
[0056] Group G dosage X dosage Y dosage S dosage Test result 1 11 12 7 16 117.7 2 11 13 8 17 127.9 3 11 14 9 18 136.3 4 12 12 8 18 132.1 5 12 13 9 16 114.5 6 12 14 7 17 109.8 7 13 12 9 17 118.8 8 13 13 7 18 126.1 9 13 14 8 16 107.4
[0057] Table 2-2, range analysis of cone penetration test
[0058]
[0059]
[0060] From Table 2-2, it can be seen that DOM has the greatest influence on the cone penetration, followed by SBS (i.e. modifier), and the influence of aromatic oil and rubber powder on the cone penetration is smaller.
[0061] In combination with Figure 1It can be seen that the modifier content and the rubber powder content are negatively correlated with the cone penetration size, and the aromatic oil content and the DOM content are positively correlated with the cone penetration size.
[0062] Table 2-3, variance analysis of cone penetration test
[0063] Factor Deviation square sum Degree of freedom F ratio F 0.10 ]]> F 0.05 ]]> F 0.01 ]]> Significance G dosage 171.469 2 1.892 3.46 5.14 10.90 X dosage 50.336 2 0.555 3.46 5.14 10.90 Y dosage 50.142 2 0.553 3.46 5.14 10.90 S dosage 527.069 2 5.814 3.46 5.14 10.90 ** Error 271.95 6
[0064] From Table 2-3, the F ratio of DOM is between F 0.05 and F 0.01 , so the DOM content has a significant effect on the cone penetration, and the other factors have a smaller effect on the cone penetration.
[0065] 2. High temperature softening performance
[0066] Table 2-4, softening point test results
[0067] Group G dosage X dosage Y dosage S dosage Test result 1 11 12 7 16 71.0 2 11 13 8 17 69.8 3 11 14 9 18 69.0 4 12 12 8 18 70.0 5 12 13 9 16 72.4 6 12 14 7 17 73.6 7 13 12 9 17 71.0 8 13 13 7 18 71.9 9 13 14 8 16 74.7
[0068] Table 2-5, range analysis of softening point test
[0069]
[0070] From Table 2-5, the range of each factor is small, indicating that each factor has little effect on the softening point.
[0071] From Table 2-5, the range of each factor is small, indicating that each factor has little effect on the softening point. Figure 2 It can be seen that the modifier content and the rubber powder content are positively correlated with the softening point size, and the aromatic oil content and the DOM content are negatively correlated with the softening point size.
[0072] Table 2-6, variance analysis of softening point test
[0073] Factor Deviation square sum Degree of freedom F ratio F 0.10 ]]> F 0.05 ]]> F 0.01 ]]> Significance G dosage 11.316 2 1.645 3.11 4.46 8.65 X dosage 4.749 2 0.691 3.11 4.46 8.65 Y dosage 2.802 2 0.407 3.11 4.46 8.65 S dosage 8.642 2 1.257 3.11 4.46 8.65 Error 27.51 8
[0074] From Table 2-6, the F ratio of each factor is less than F 0.10 , so each factor has a smaller effect on the softening point.
[0075] 3. High temperature flow performance
[0076] Table 2-7, flow test results
[0077] Group G dosage X dosage Y dosage S dosage Test result 1 11 12 7 16 18.2 2 11 13 8 17 19.6 3 11 14 9 18 19.7 4 12 12 8 18 21.4 5 12 13 9 16 13.7 6 12 14 7 17 8.5 7 13 12 9 17 13.9 8 13 13 7 18 9.4 9 13 14 8 16 4.0
[0078] Table 2-8, range analysis of flow test
[0079]
[0080] From Table 2-8, it can be seen that the modifier content and the rubber powder content have a greater effect on the flow value, and the aromatic oil content and the DOM content have a smaller effect on the flow value.
[0081] From Table 2-8, it can be seen that the modifier content and the rubber powder content have a greater effect on the flow value, and the aromatic oil content and the DOM content have a smaller effect on the flow value. Figure 3 From Table 2-8, it can be seen that the modifier content and the rubber powder content have a greater effect on the flow value, and the aromatic oil content and the DOM content have a smaller effect on the flow value.
[0082] Table 2-9, Analysis of Variance of Flow Test
[0083] Factor Deviation square sum Degree of freedom F ratio F 0.10 ]]> F 0.05 ]]> F 0.01 ]]> Significance G dosage 152.327 2 2.122 3.11 4.46 8.65 X dosage 75.620 2 1.053 3.11 4.46 8.65 Y dosage 23.327 2 0.325 3.11 4.46 8.65 S dosage 35.847 2 0.499 3.11 4.46 8.65 Error 287.12 8
[0084] From Table 2-9, it can be seen that the F ratios of the several factors are all less than F 0.10 , indicating that the effects of the several factors on the flow value are all small.
[0085] 4. Elastic Recovery Performance
[0086] Table 2-10, Results of Elastic Test
[0087] Group G dosage X dosage Y dosage S dosage Test result 1 11 12 7 16 75.5 2 11 13 8 17 78.9 3 11 14 9 18 85.9 4 12 12 8 18 88.9 5 12 13 9 16 85.2 6 12 14 7 17 91.1 7 13 12 9 17 86.2 8 13 13 7 18 93.4 9 13 14 8 16 92.3
[0088] Table 2-11, Range Analysis of Elastic Test
[0089]
[0090] From Table 2-11, it can be seen that the range of the aromatic oil is very small, indicating that the aromatic oil content has a small effect on the elastic recovery, and the ranges of the other factors are very large relative to the aromatic oil, indicating that the other factors have a great effect on the elastic recovery.
[0091] From Table 2-11, it can be seen that the range of the aromatic oil is very small, indicating that the aromatic oil content has a small effect on the elastic recovery, and the ranges of the other factors are very large relative to the aromatic oil, indicating that the other factors have a great effect on the elastic recovery. Figure 4 From Table 2-11, it can be seen that the range of the aromatic oil is very small, indicating that the aromatic oil content has a small effect on the elastic recovery, and the ranges of the other factors are very large relative to the aromatic oil, indicating that the other factors have a great effect on the elastic recovery.
[0092] Table 2-12, Analysis of Variance of Elastic Recovery Test
[0093] Factor Deviation square sum Degree of freedom F ratio F 0.10 ]]> F 0.05 ]]> F 0.01 ]]> Significance G dosage 184.829 2 109.886 9.00 19.00 99.00 *** X dosage 59.616 2 35.444 9.00 19.00 99.00 ** Y dosage 1.682 2 1.000 9.00 19.00 99.00 S dosage 42.809 2 25.451 9.00 19.00 99.00 ** Error 1.68 2
[0094] From Table 2-12, it can be seen that the F ratio of the modifier is greater than F 0.01 , indicating that the modifier content has a highly significant effect on the elastic recovery, and the F ratios of the rubber powder and the DOM are between F 0.05 and F 0.01 , indicating that the rubber powder content and the DOM content have a significant effect on the elastic recovery.
[0095] 5. Low Temperature Tensile Performance
[0096] Table 2-13, Results of Low Temperature Tensile Test
[0097]
[0098]
[0099] From Table 2-13, it can be concluded that the 9 groups of trial joint sealing glue can pass the stretching under the environment of-10 DEG C, -20 DEG C, -30 DEG C, but present the stretching failure in the form of fracture (joint sealing glue itself breaks), test mold breaks, separation (joint sealing glue and test mold separate) and the like under the condition of-40 DEG C.
[0100] From Figure 5 to Figure 7 It can be seen that the trial joint sealing glue performs well under the environment of-10 DEG C, -20 DEG C, -30 DEG C, the joint sealing glue itself does not appear to be broken, and is well bonded with the concrete test mold, and no obvious cracks and other damage occur under naked eye observation.
[0101] Through the above comprehensive analysis, the best ratio of the cold type joint sealing glue is determined as shown in Table 2-14.
[0102] Table 2-14, best ratio of joint sealing glue (mass fraction)
[0103] Matrix asphalt Modifier Rubber powder Aromatic oil DOM Terpene resin Stabilizer 100 13 14 7 16 3 0.3
[0104] The performance of the joint sealing material is detected, and the indexes of the finally trial joint sealing material are shown in Table 2-15, and the comprehensive performance of the best ratio joint sealing glue is optimal compared with the above 9 groups.
[0105] Table 2-15, performance test results of the best ratio
[0106]
[0107] The high-performance cold type crack repair joint sealing glue of the application determines the best ratio of the trial joint sealing glue according to the performance analysis result of the joint sealing glue, and the performance is detected, and the anti-foreign object embedding property, high-temperature softening property, high-temperature fluidity, elastic recovery property and low-temperature stretching performance are good, and the joint sealing glue can be applied to the area with the minimum temperature not lower than-30 DEG C. There are high-temperature, normal temperature and low-temperature type joint sealing glues on the market, but the former three cannot be applied to cold areas, the joint sealing glue of the application can be applied to cold areas, and the performance is better than the former three.
[0108] The various raw materials selected by the high-performance cold type crack repair joint sealing glue of the application are safe and environmentally friendly, the basic performance is at a good level, and the raw material prices are relatively low, so that the cost of the joint sealing glue is affordable, the popularization is good, and the social benefits are good.
[0109] The above description is only the preferred embodiment of the present application and the explanation of the technical principles. It should be understood by those skilled in the art that the scope of the protection of the present application is not limited to the technical solutions formed by the specific combinations of the above technical features. It should also cover other technical solutions formed by the combinations of the above technical features or their equivalent features without departing from the concept of the present application. For example, the technical solutions formed by the mutual replacements of the above features and the technical features disclosed in the present application (but not limited to) with similar functions.
Claims
1. A high performance cold type crack repair sealant characterized in that, The high-performance cold-type crack repair sealant comprises 100 parts by mass of base asphalt, 11-13 parts by mass of modifier, 12-16 parts by mass of 80-mesh rubber powder, 7-9 parts by mass of aromatic oil, 16-18 parts by mass of DOM, 3 parts by mass of terpene resin and 0.3 parts by mass of stabilizer.
2. The high performance cold-applied crack repair sealant as claimed in claim 1, wherein, The high-performance cold-type crack repair sealant comprises 100 parts by mass of base asphalt, 13 parts by mass of modifier, 14 parts by mass of 80-mesh rubber powder, 7 parts by mass of aromatic oil, 16 parts by mass of DOM, 3 parts by mass of terpene resin and 0.3 parts by mass of stabilizer.
3. The high performance cold-applied crack repair sealant of claim 1, wherein, The base asphalt is Panjin 90# asphalt.
4. The high performance cold-applied crack repair sealant of claim 1, wherein, The modifier is YH-791H modifier.
5. The high performance cold-applied crack repair sealant as claimed in claim 1, wherein, The 80-mesh rubber powder is steel cord crown rubber powder.
6. The high performance cold-applied crack repair sealant of claim 1, wherein, The stabilizer is at least one of carbon black, fiber, sulfur and lime.
7. A process for preparing the high performance cold type crack repair sealant as claimed in any one of claims 1 to 6, characterized in that, The method comprises the following steps: The base asphalt is heated to 140 DEG C, and then the modifier and the aromatic oil are added and stirred uniformly, and the modified asphalt is obtained by swelling at 140 DEG C for 30 min; The modified asphalt is sheared at 185 DEG C and a shearing rate of 4000 r / min for more than 1 h until fully fused; The 80-mesh rubber powder and the terpene resin are added into the modified asphalt and sheared for more than 30 min until fully fused to obtain the modified asphalt; The modified asphalt is cooled to 160 DEG C, and then the DOM is added and sheared until fully fused; The stabilizer is added into the modified asphalt and sheared until fully fused to obtain the high-performance cold-type crack repair sealant.