Noise-reduction anti-slip cold-mixed cold-laid thin overlay material as well as preparation method and application thereof

Abstract

The invention relates to the technical field of road engineering, in particular to a noise-reducing anti-skid cold-mixed and cold-laid thin overlay material as well as a preparation method and application thereof. The invention provides the noise-reducing anti-slip cold-mixed and cold-laid thin overlay material which has good noise-reducing effect and anti-slip performance, can be quickly applied to preventive maintenance and repair of pavements under a low-temperature or humid condition, does not need to be heated, is simple in construction process, reduces energy consumption and construction cost, reduces environmental pollution, and is suitable for large-scale popularization and application. Wide application prospects are realized.

Description

Technical Field

[0001] The present invention relates to the technical field of road engineering, and in particular to a noise-reducing and anti-skid cold-mix cold-laid thin-layer covering material, and a preparation method and application thereof. Background Art

[0002] With the increase in highway traffic, road wear, aging and noise problems are becoming increasingly serious. Traditional hot mix hot paving technology requires high temperature to heat the asphalt mixture, and there are problems such as high energy consumption and severe environmental pollution during the construction process. In low temperature or humid environments, the construction effect of traditional hot mix mixtures is even less ideal. The existing micro-surfacing technology has deficiencies in noise reduction and durability, which limits its scope of application. As a new type of road preventive maintenance technology, cold mix cold paving thin layer overlay technology can be constructed at room temperature without heating. It is suitable for road repair under various climatic conditions. The repair effect is much better than the existing micro-surfacing technology, and the construction process is simpler than hot mix asphalt mixture.

[0003] How to provide a noise-reducing and anti-skid cold-mixed and cold-laid thin-layer covering material that can combine the excellent properties of noise reduction and anti-skid has become a technical problem that urgently needs to be solved in this field. Summary of the invention

[0004] First, the present invention provides a noise-reducing and anti-skid cold-mixed and cold-laid thin-layer covering material, the raw materials of which include the following components in parts by weight: 100-110 parts of binder, 800-900 parts of solid aggregate, 3-13 parts of TM aqueous solution and 45-70 parts of noise reduction material; The binder includes: 55-70 parts of road petroleum asphalt, 2-6 parts of SBS modifier, 1-10 parts of water-based epoxy emulsion, 1-7 parts of emulsifier and 25-40 parts of water; The solid aggregate includes: 300-500 parts of 0-5mm fine aggregate, 300-700 parts of 5-10mm coarse aggregate, 4-10 parts of limestone powder, 5-15 parts of cement and 0.5-5 parts of fiber; The TM aqueous solution includes: 0.1-8 parts of surfactant, 0.001-0.1 parts of silicone solution, 0.1-0.3 parts of phosphoric acid and 2-10 parts of water.

[0005] Preferably, the raw material includes the following components in parts by weight: 100-105 parts of binder, 890-900 parts of solid aggregate, 4.5-5.5 parts of TM aqueous solution and 45-55 parts of noise reduction material; The binder includes: 55-65 parts of road petroleum asphalt, 2.5-4 parts of SBS modifier, 2-8 parts of waterborne epoxy emulsion, 2-3 parts of emulsifier and 25-32 parts of water; The solid aggregate includes: 395-405 parts of 0-5 mm fine aggregate, 475-485 parts of 5-10 mm coarse aggregate, 4-6 parts of limestone powder, 8-10 parts of cement and 1-2 parts of fiber; The TM aqueous solution includes: 0.1-0.3 parts of surfactant, 0.001-0.005 parts of silicone solution, 0.1-0.2 parts of phosphoric acid and 4-5 parts of water.

[0006] More preferably, the raw material comprises the following components in parts by weight: 100-105 parts of binder, 890-900 parts of solid aggregate, 4.5-5.0 parts of TM aqueous solution and 45-48 parts of noise reduction material; The binder includes: 59-62 parts of road petroleum asphalt, 2.8-3.5 parts of SBS modifier, 4-6 parts of waterborne epoxy emulsion, 2.2-2.8 parts of emulsifier and 28-30 parts of water; The solid aggregate includes: 398-402 parts of 0-5 mm fine aggregate, 478-482 parts of 5-10 mm coarse aggregate, 4.5-5.5 parts of limestone powder, 9-9.5 parts of cement and 1-1.2 parts of fiber; The TM aqueous solution includes: 0.18-0.22 parts of surfactant, 0.0015-0.0025 parts of silicone solution, 0.14-0.16 parts of phosphoric acid and 4.625-4.65 parts of water.

[0007] Preferably, the road petroleum asphalt is 90# road petroleum asphalt.

[0008] Preferably, the emulsifier is (Shengquan Group) SQBIO A2 cationic emulsifier.

[0009] Preferably, the fine aggregate is at least one of limestone crushed stone or basalt crushed stone; and / or, the coarse aggregate is basalt crushed stone.

[0010] Preferably, the fiber is at least one of polyester fiber and basalt fiber.

[0011] Preferably, the surfactant is at least one of tallow propane polyamine epoxide and tall oil acid imidazoline; and / or, the silicone solution is at least one of HDTMS solution and VARIPHOB AC 2231 hydrophobic agent; and / or, the water-based epoxy emulsion is Huntsman ARALDITE PZ 3961-1 water-based epoxy emulsion.

[0012] Furthermore, the present invention provides a method for preparing the noise-reducing and anti-skid cold-mixed and cold-laid thin-layer covering material, comprising: Mixing road petroleum asphalt with SBS modifier to obtain modified asphalt; mixing the modified asphalt with an emulsifier to obtain emulsified asphalt; the solid content of the emulsified asphalt is above 60%; mixing the emulsified asphalt with water-based epoxy emulsion to obtain composite modified emulsified asphalt; The solid aggregate, TM aqueous solution and noise reduction material are evenly mixed, and then the composite modified emulsified asphalt is added to obtain the noise reduction and anti-skid cold-mix cold-laid thin-layer overlay material.

[0013] Furthermore, the present invention provides the use of the noise-reducing and anti-skid cold-mixed and cold-laid thin-layer covering material or the preparation method in preventive road maintenance, repair, and improvement of road performance.

[0014] In the specific implementation process, the application steps include: Clean the road surface to be repaired to ensure that the surface is clean and free of debris; evenly spread the noise-reducing and anti-skid cold-mixed and cold-laid thin-layer covering material on the road surface, and control the spreading thickness to 1-2 cm; use a roller to compact it to ensure that the material is tightly combined with the road surface; after compaction, let it stand for 1-2 hours, and open to traffic after the material is initially formed.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a noise-reducing and anti-skid cold-mixed and cold-laid thin-layer covering material, which has good noise reduction effect and anti-skid performance, and can be quickly applied to preventive maintenance and repair of pavement under low temperature or humid conditions, does not require heating, has a simple construction process, reduces energy consumption and construction costs, reduces environmental pollution, and has broad application prospects. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] If no specific techniques or conditions are specified in the examples, all are carried out according to conventional methods or the techniques or conditions described in the literature in the field, or according to the product instructions. If no manufacturer is specified for the reagents and instruments used, all are conventional products that can be purchased through regular channels.

[0018] The preparation method of the noise reduction and anti-skid cold-mix cold-laid thin-layer covering material in the following embodiments is as follows: Mix 90# road petroleum asphalt and SBS modifier evenly in proportion to obtain modified asphalt; mix modified asphalt and emulsifier evenly in proportion to obtain emulsified asphalt; keep the solid content of emulsified asphalt above 60%; mix emulsified asphalt with water-based epoxy emulsion to obtain composite modified emulsified asphalt; mix solid aggregate, TM aqueous solution and noise reduction material evenly, then add composite modified emulsified asphalt to obtain noise reduction and anti-skid cold mix cold laying thin layer overlay material.

[0019] Example 1

[0020] This embodiment provides a noise-reducing and anti-skid cold-mixed and cold-laid thin-layer covering material, which is made of the following raw materials in parts by weight: 100 parts of binder: 62.4 parts of 90# road petroleum asphalt as base asphalt, 2.6 parts of SBS modifier, 5 parts of Huntsman ARALDITE PZ 3961-1 water-based epoxy emulsion, 3 parts of Shengquan Group SQBIO A2 cationic emulsifier, and 27 parts of water; Solid aggregate 895 parts: 396.02 parts of fine aggregate 0-5mm basalt crushed stone, 484.02 parts of coarse aggregate 5-10mm basalt crushed stone, 4.4 parts of limestone powder, 8.8 parts of cement, and 1.76 parts of polyester fiber; TM aqueous solution: 5.001 parts; wherein the surfactant is 0.25 parts of imidazoline tall oil acid, the organosilicon solution is 0.001 parts of HDTMS solution, 0.13 parts of phosphoric acid, and 4.62 parts of water; Noise reduction material: 50 parts of 100 mesh rubber particles.

[0021] Example 2

[0022] This embodiment provides a noise-reducing and anti-skid cold-mixed and cold-laid thin-layer covering material, which is made of the following raw materials in parts by weight: 100 parts of binder: 60 parts of base asphalt 90# road petroleum asphalt, 3 parts of SBS modifier, 5 parts of Huntsman ARALDITE PZ 3961-1 water-based epoxy emulsion, 2.5 parts of emulsifier (same as Example 1), and 29.5 parts of water; 895 parts of solid aggregate: 400 parts of 0-5 mm basalt crushed stone as fine aggregate, 480 parts of 5-10 mm basalt crushed stone as coarse aggregate, 5 parts of limestone powder, 9 parts of cement, and 1 part of fiber (same as in Example 1); TM aqueous solution: 4.98 parts, wherein the surfactant is 0.2 parts (same as in Example 1), the organosilicon solution (same as in Example 1) is 0.002 parts, the phosphoric acid is 0.15 parts, and the water is 4.628 parts; Noise reduction material: 45 parts of 100 mesh rubber particles.

[0023] Example 3

[0024] This embodiment provides a noise-reducing and anti-skid cold-mixed and cold-laid thin-layer covering material, which is made of the following raw materials in parts by weight: 100 parts of binder: 58 parts of 90# road petroleum asphalt as base asphalt, 4 parts of SBS modifier, 5 parts of Huntsman ARALDITE PZ 3961-1 water-based epoxy emulsion, 2 parts of emulsifier (same as Example 1), and 31 parts of water; 897.5 parts of solid aggregate: 405 parts of 0-5 mm basalt crushed stone as fine aggregate, 475 parts of 5-10 mm basalt crushed stone as coarse aggregate, 6 parts of limestone powder, 10 parts of cement, and 1.5 parts of fiber (same as in Example 1); TM aqueous solution: 5 parts; wherein the surfactant is 0.15 parts (same as in Example 1), the organosilicon solution (same as in Example 1) is 0.003 parts, the phosphoric acid is 0.18 parts, and the water is 4.667 parts; Noise reduction material: 55 parts of 100 mesh rubber particles.

[0025] Test Example 1

[0026] The noise reduction and anti-skid properties of the noise reduction and anti-skid cold-mixed and cold-laid thin-layer covering material prepared in the above embodiment were tested.

[0027] 1. The test method for noise reduction performance is as follows: A wet wheel abrasion tester is used to simulate the driving of a car, and a digital sound level meter collects decibels during the abrasion process to evaluate the noise level of the cold-mixed and cold-laid thin layer. The specific test method is as follows: (1) Preparation of test pieces. Wet wheel wear test pieces were formed according to different embodiments, and after curing, they were kept at room temperature for future use.

[0028] (2) Blank group test. The wet wheel abrader produces a certain amount of noise during operation. In order to accurately evaluate the noise reduction effect of cold-mixed and cold-laid thin layers, the noise of the wet wheel abrader when idling is tested as a blank group.

[0029] (3) Test preparation. Fix the test piece on the wet wheel abrasion tester and lower the wear head so that it just touches the test piece. Fix the digital sound level meter next to the test instrument, with the probe of the sound level meter about 20 cm away from the wear wheel. In order to ensure the reliability of the test results, the personnel should stand still during the test.

[0030] (4) Start the test. Start the instrument and do not record data for the first 10 seconds. Start recording data from the 11th second for 30 seconds. After data collection is completed, stop the instrument and remove the test piece.

[0031] (5) Data sorting. Import the collected data into an Excel spreadsheet, sort them in descending order, find the maximum and minimum values ​​of the noise, and calculate the Leq value according to the formula.

[0032]

[0033] Where d = L 10 -L 90 .

[0034] L 10 -The value that 10% of all measured data exceeds, which corresponds to the average peak value of noise reduction.

[0035] L 50 -The value that 50% of all measured data exceeds, which corresponds to the average peak value of noise reduction.

[0036] L 90 -The value that 90% of all measured data exceed, which corresponds to the average peak value of noise reduction.

[0037] 2. The test method for anti-slip performance is as follows: The test method of the pendulum friction instrument in the "Test Specifications for Asphalt and Asphalt Mixtures in Highway Engineering" (JTGE20-2011) is as follows: Determine the test location: Select a representative location on the road surface for testing, generally the middle of the lane or an area with heavy traffic.

[0038] Clean the test area: Use clean water and a brush to clean the test area, making sure there is no dirt, sand, or other debris on the surface that could affect the test results.

[0039] Mark test points: Mark the test points on the cleaned area to ensure that the test points are fixed and not disturbed.

[0040] Install the pendulum instrument: Place the pendulum instrument on the test point and ensure that the device is stable. Adjust the swing arm so that it is perpendicular to the road surface.

[0041] Wetting the road surface: Wet the road surface with water at the test point, ensuring that the test area is moist but there is no obvious accumulation of water.

[0042] Calibrate the equipment: Adjust the level bubble on the pendulum instrument to ensure that the equipment is level. Calibrate the pendulum arm according to the equipment manual to align it to the zero position.

[0043] To test: lift the swing arm to a certain height (usually about 30 degrees), then release it to allow the swing arm to swing freely. Record the reading after the swing arm swings (slip value), which is the sliding distance of the swing arm on the road surface.

[0044] Repeat the test: Repeat the test at least five times at the same test point, making sure to wet the road surface before each test. Record the readings of each test and calculate the average as the final result.

[0045] Data processing and analysis: Calculate the average slip value of each test point. Evaluate the anti-skid performance of the road surface based on the average slip value. Generally speaking, the larger the slip value, the worse the anti-skid performance of the road surface.

[0046] The test results are shown in Table 1.

[0047] Table 1

[0048] Test Example 2

[0049] In actual application of a certain city road, the cold-mixed cold-laid thin-layer overlay material of Examples 1 to 3 was used to repair part of the aged road surface. No traffic closure was required during the construction process, and the repaired road surface could carry light vehicles within 2 hours, solidified after 3 hours, and no obvious settlement or damage was found, with good user feedback.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A noise-reducing and anti-skid cold-mixed and cold-laid thin-layer covering material, characterized in that: The raw materials include the following components in parts by weight: 100-110 parts of binder, 800-900 parts of solid aggregate, 3-13 parts of TM aqueous solution and 45-70 parts of noise reduction material; The binder includes: 55-70 parts of road petroleum asphalt, 2-6 parts of SBS modifier, 1-10 parts of water-based epoxy emulsion, 1-7 parts of emulsifier and 25-40 parts of water; The solid aggregate includes: 300-500 parts of 0-5mm fine aggregate, 300-700 parts of 5-10mm coarse aggregate, 4-10 parts of limestone powder, 5-15 parts of cement and 0.5-5 parts of fiber; The TM aqueous solution includes: 0.1-8 parts of surfactant, 0.001-0.1 parts of silicone solution, 0.1-0.3 parts of phosphoric acid and 2-10 parts of water.

2. The noise reduction and anti-skid cold-mix cold-laid thin-layer covering material according to claim 1 is characterized in that: The raw materials include the following components in parts by weight: 100-105 parts of binder, 890-900 parts of solid aggregate, 4.5-5.5 parts of TM aqueous solution and 45-55 parts of noise reduction material; The binder includes: 55-65 parts of road petroleum asphalt, 2.5-4 parts of SBS modifier, 2-8 parts of waterborne epoxy emulsion, 2-3 parts of emulsifier and 25-32 parts of water; The solid aggregate includes: 395-405 parts of 0-5 mm fine aggregate, 475-485 parts of 5-10 mm coarse aggregate, 4-6 parts of limestone powder, 8-10 parts of cement and 1-2 parts of fiber; The TM aqueous solution includes: 0.1-0.3 parts of surfactant, 0.001-0.005 parts of silicone solution, 0.1-0.2 parts of phosphoric acid and 4-5 parts of water.

3. The noise reduction and anti-skid cold-mix cold-laid thin-layer covering material according to claim 2 is characterized in that: The raw materials include the following components in parts by weight: 100-105 parts of binder, 890-900 parts of solid aggregate, 4.5-5.0 parts of TM aqueous solution and 45-48 parts of noise reduction material; The binder includes: 59-62 parts of road petroleum asphalt, 2.8-3.5 parts of SBS modifier, 4-6 parts of waterborne epoxy emulsion, 2.2-2.8 parts of emulsifier and 28-30 parts of water; The solid aggregate includes: 398-402 parts of 0-5 mm fine aggregate, 478-482 parts of 5-10 mm coarse aggregate, 4.5-5.5 parts of limestone powder, 9-9.5 parts of cement and 1-1.2 parts of fiber; The TM aqueous solution includes: 0.18-0.22 parts of surfactant, 0.0015-0.0025 parts of silicone solution, 0.14-0.16 parts of phosphoric acid and 4.625-4.65 parts of water.

4. The noise reduction and anti-skid cold-mix cold-laid thin-layer covering material according to any one of claims 1 to 3, characterized in that: The road petroleum asphalt is 90# road petroleum asphalt.

5. The noise reduction and anti-skid cold-mix cold-laid thin-layer covering material according to any one of claims 1 to 3, characterized in that: The emulsifier is SQBIO A2 cationic emulsifier.

6. The noise reduction and anti-skid cold-mix cold-laid thin-layer covering material according to any one of claims 1 to 3, characterized in that: The fine aggregate is at least one of limestone crushed stone or basalt crushed stone; and / or, the coarse aggregate is basalt crushed stone.

7. The noise reduction and anti-skid cold-mix cold-laid thin-layer covering material according to any one of claims 1 to 3, characterized in that: The fiber is at least one of polyester fiber and basalt fiber.

8. The noise reduction and anti-skid cold-mix cold-laid thin-layer covering material according to any one of claims 1 to 3, characterized in that: The surfactant is at least one of tallow propane polyamine epoxide and tall oil acid imidazoline; and / or, the silicone solution is at least one of HDTMS solution and VARIPHOB AC 2231 hydrophobic agent; and / or, the water-based epoxy emulsion is Huntsman ARALDITE PZ 3961-1 water-based epoxy emulsion.

9. The method for preparing the noise-reducing and anti-skid cold-mixed and cold-laid thin-layer covering material according to any one of claims 1 to 8, characterized in that: include: Mixing road petroleum asphalt with SBS modifier to prepare modified asphalt; The modified asphalt is mixed with an emulsifier to obtain an emulsified asphalt; the solid content of the emulsified asphalt is above 60%; the emulsified asphalt is mixed with an aqueous epoxy emulsion to obtain a composite modified emulsified asphalt; The solid aggregate, TM aqueous solution and noise reduction material are evenly mixed, and then the composite modified emulsified asphalt is added to obtain the noise reduction and anti-skid cold-mix cold-laid thin-layer overlay material.

10. Use of the noise-reducing and anti-skid cold-mix cold-laid thin-layer covering material according to any one of claims 1 to 8 or the preparation method according to claim 9 in preventive road maintenance, repair, and improvement of road performance.

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