Preparation method of cold-mixed and cold-paved colored asphalt liquid

Abstract

The invention relates to the technical field of asphalt liquid preparation, and particularly discloses a preparation method of cold-mixing and cold-paving type colored asphalt liquid, which comprises the following steps: 1, adding softening oil into a reaction kettle, and starting a heating system; 2, adding petroleum resin, an antioxidant and an ultraviolet light absorber, continuously heating to 120 DEG C, keeping the reaction, and continuously stirring for 1 hour; according to the preparation method of the cold-mixed and cold-paved colored asphalt liquid, normal-temperature mixing and paving are utilized, high-temperature heating is not needed, and energy consumption and emission are reduced; construction is convenient, mobility is good, and the method is suitable for small sites and manual operation; after being mixed with different densely-distributed stones, the pavement requirements of different scenes can be met, and after being mixed with the densely-distributed stones, the paved and compacted pavement can bear the rolling compaction of medium and heavy vehicles; by adding pigments, diversified colors are achieved, and the landscape road requirements are met; the stones and the asphalt liquid are mixed and paved at normal temperature, so that the production cost of practical application is greatly reduced, and the energy consumption is greatly reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of asphalt liquid preparation, and in particular relates to a method for preparing cold-mixed and cold-laid colored asphalt liquid. Background Art

[0002] Epoxy glue adhesive type, also known as colored cold-mix asphalt liquid, is prepared by adding diluents and pigments to epoxy resin. When used, it is mixed with a curing agent in the required proportion. After mixing, it is mixed with gravel with a particle size of 3-5mm in the ratio of 1: (15-18). The mixture is polished and compacted by a grinder. The problem is that the gravel must be clean and dry, and many gravels on the market cannot meet its requirements. The construction environment requires: humidity within 80%, the base layer is dry, and rain is not allowed during maintenance. However, in fact, this cannot be met in summer or in rainy areas in the south. The grooves reserved in permeable concrete are the channels for storing water and rainwater. Every time it rains, construction cannot be carried out for several days. In addition, epoxy resin has poor weather resistance. With the exposure to ultraviolet rays, the film will quickly change color, age and become brittle. When it is crushed by external force, stones will fall off. It is currently the product with the most serious stone falling.

[0003] Polyurethane glue adhesive type, also known as colored cold-mix asphalt liquid, is a mixture of polyurethane glue and filler. After mixing, it is mixed with curing agent in proportion during construction. The mixture is then mixed with 3-5mm stone in a ratio of 1:15 and 1:(15-18). The mixture is polished and compacted by a polisher. Its problems are the same as those of epoxy resin glue. It has more stringent requirements on moisture. When the rainy season comes, it cannot be used in construction at all. At present, it is a product that is most seriously affected by the moisture, powder content, air temperature and humidity, and base temperature and humidity of the stone. Due to its stringent construction requirements, when this product is used in project design, most construction environments and conditions cannot meet the technical requirements given by the manufacturer, which has also become the biggest pain point of the product. The problem of falling stones is also very serious.

[0004] Warm mix colored asphalt liquid. This product is solid at room temperature and is composed of petroleum resin, plasticizer, and modifier. It must be heated in a storage tank at room temperature. During project application, it must be transported using a heat-traced transport tank, and there must also be a professional storage tank with a heating function at the project site for storage. When in use, it is heated to the operating temperature and mixed with preheated stones. During mixing, color powder is added to prepare a uniformly colored mixture. It is transported to the site by a professional transport vehicle, paved by a paver, and compacted and vibrated by a roller. After cooling, it can be opened to traffic. Currently, the problems are that all links such as production, storage, transportation, and application are highly energy-consuming, and the temperature basically remains above 150 °C, even reaching 170 - 180 °C in winter. Warm mix asphalt has good aesthetics and construction performance, but with the city's demand for colored functional roads, warm mix asphalt cannot meet the paving requirements of small functional roads. The construction temperature requirements of warm mix asphalt are relatively high. During mixing, hot mixing must be carried out, and the stones and colored asphalt liquid must be kept above 150 °C for mixing, resulting in high energy consumption. Due to the high mixing temperature, the heat resistance of many pigments is poor, resulting in dull colors. The mixture cannot stay outdoors for a long time. If the time exceeds, it will affect the paving performance or even solidify together and cannot be paved, and it will also affect the adhesion of the mixture after paving. The mixing temperature requirement is even higher in winter.

[0005] However, traditional asphalt materials need to be heated and mixed at high temperatures during the construction process, which have problems such as high energy consumption, large pollution, and complex operation, and have a single color, making it difficult to meet the requirements of modern road construction for environmental protection and aesthetics; although existing cold mix and cold lay asphalt can reduce the construction temperature, there are still technical defects such as insufficient adhesion, poor fluidity, and single color, especially difficult to adapt to the flexible construction of small sites and the rolling requirements of medium and heavy-duty vehicles. Therefore, it is of great application value to develop a cold mix and cold lay asphalt liquid with environmental protection, high adhesion, color adjustability, and high load-bearing capacity.

[0006] Based on the above problems, the present invention can meet the requirements of mixing, transportation, paving, and compaction molding in small sites, has good fluidity, strong adhesion, is easy to operate, has bright colors, can adjust the ratio of asphalt liquid to different stone gradations, meets the application requirements of different application scenarios, and the road surface paved by mixing with dense-graded stones can meet the rolling requirements of medium and heavy-duty vehicles. Summary of the Invention

[0007] The purpose of the present invention is to provide a preparation method of cold mix and cold lay colored asphalt liquid to solve the problems of high energy consumption, single color, and insufficient adhesion in the prior art.

[0008] To achieve the above purpose, the present invention provides the following technical solutions:

[0009] A preparation method of cold mix and cold lay colored asphalt liquid, including:

[0010] Step 1: Add softening oil into the reaction kettle and turn on the heating system.

[0011] Step 2: Add petroleum resin, antioxidant and ultraviolet absorber in sequence, continuously heat them up to 120 °C, and keep stirring the reaction for 1 hour.

[0012] In Step 1 and Step 2, the input ratio of the petroleum resin is 37%-39%, the softening oil includes heavy aromatic oil, white oil, naphthenic oil and waste engine oil, the input ratios of the heavy aromatic oil, white oil, naphthenic oil and waste engine oil are 3%-10%, the input ratio of the solvent oil is 3%-8%, the raw material proportion quantity of the petroleum resin is 37 kg - 40 kg, the raw material proportion quantities of the heavy aromatic oil, waste engine oil and solvent oil are 3 kg - 8 kg, 3 kg - 8 kg and 6 kg - 10 kg respectively, the raw material proportion quantity of the modifier is 30.5 kg - 35.5 kg, the raw material proportion quantity of the antioxidant is 0.1 kg - 0.4 kg, and the raw material proportion quantity of the ultraviolet absorber is 0.1 kg - 0.5 kg.

[0013] The input ratios of both the antioxidant and the ultraviolet absorber are 0.1%-0.2%, and the input ratio of the color powder is 8%-12%.

[0014] Step 3: Cool down the operation in Step 2. When the temperature drops below 80 °C, add solvent oil and stir evenly for 20 minutes. When the temperature drops below 60 °C, add the self-made modifier and stir evenly to form a homogeneous fluid.

[0015] In Step 3, the input ratio of the modifier is 30.5%-32.5%. The modifier includes SBS, SIS, naphthenic oil and xylene. The input ratios of SBS and SIS inside the modifier are 18%-25%, the input ratio of the naphthenic oil inside the modifier is 0-10%, and the input ratio of the xylene inside the modifier is 65%-82%.

[0016] Step 4: Add pigments into the reaction kettle and disperse them at high speed. The pigments include iron oxide red, phthalocyanine blue, iron oxide black, iron oxide yellow, chrome yellow and titanium white.

[0017] In Step 4, the raw material proportion quantity of the iron oxide red pigment is 7 kg - 12 kg.

[0018] Step 5: Disperse the above raw materials at high speed, check whether the color of the test item is consistent with the color plate, and check whether the fineness and viscosity meet the requirements. After the raw materials are mixed qualified, discharge them and carry out discharging and packaging.

[0019] Through the above technical solution, by precisely controlling the heating, cooling and dissolving processes, it is ensured that the raw materials react fully within a specific temperature range, thereby improving production efficiency. The detection of the molten state of petroleum resin and the pretreatment of the modifier are added in the key steps to ensure the complete dissolution and uniform mixing of the raw materials, and improve the quality control level of the product; the carefully designed raw material ratio, such as the reasonable input ratio of petroleum resin, softening oil (including heavy aromatic oil, white oil, naphthenic oil and waste engine oil), solvent oil and xylene, makes the final product have excellent physical properties and chemical stability; the addition of antioxidant and ultraviolet absorber effectively improves the weather resistance of the product and extends its service life;

[0020] In the preparation process, high-temperature environmental diluent and high-temperature plasticizer are introduced. These additives not only help to improve the processing performance of the product, but also meet the environmental protection requirements and reduce the impact on the environment; the reuse of waste engine oil not only reduces the production cost, but also realizes the recycling of resources, which is in line with the concept of sustainable development;

[0021] The preparation method of the cold mix and cold lay type colored asphalt liquid proposed by the present invention can meet the requirements of mixing, transporting, paving and pressing forming in small sites. It has good fluidity, strong adhesion, is easy to operate, has bright color, can adjust the ratio of asphalt liquid to different stone gradations to meet the application requirements of different application scenarios. At the same time, it is mixed and paved at normal temperature without high-temperature heating, reducing energy consumption and emissions; and the construction is convenient, with good fluidity, suitable for small sites and manual operation; and after being mixed with different dense-graded stones, it can meet the pavement requirements of different scenarios. After being mixed with dense-graded stones and paved and compacted, the pavement can withstand the rolling of medium and heavy vehicles; the addition of pigments can achieve diversified colors to meet the requirements of landscape roads; the stones and asphalt liquid are mixed and paved at normal temperature, which greatly reduces the production cost of actual application and significantly reduces energy consumption.

[0022] Preferably, between the second step and the third step, the petroleum resin needs to be detected to check whether the petroleum resin is completely melted.

[0023] Preferably, in the fourth step, before adding the modifier to the reaction kettle, the self-made modifier needs to be specially treated. SBS or SIS is mixed with a high-temperature diluent and a viscosity reducer in a certain proportion to form a transparent viscous liquid with a consistent state, and it is highly dispersed to make the modifier completely dissolved.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] By precisely controlling the heating, cooling, and dissolution processes, the present invention ensures that the raw materials fully react within a specific temperature range, thereby improving production efficiency. During the key steps, the detection of the dissolution state of petroleum resin and the pretreatment of modifiers are added to ensure the complete dissolution and uniform mixing of the raw materials, and improve the level of product quality control. The carefully designed raw material ratio, such as the reasonable input ratio of petroleum resin, softening oil (including heavy aromatic oil, white oil, naphthenic oil, and waste engine oil), solvent oil, and xylene, enables the final product to have excellent physical properties and chemical stability. The addition of antioxidants and ultraviolet absorbers effectively improves the weather resistance of the product and extends its service life;

[0026] During the preparation process, high-temperature environmentally friendly diluents and high-temperature plasticizers are introduced. These additives not only help improve the processing performance of the product but also meet environmental protection requirements, reducing the impact on the environment. The reuse of waste engine oil not only reduces production costs but also realizes the recycling of resources, meeting the concept of sustainable development.

[0027] In summary, the preparation method of the cold-mix cold-laying type colored asphalt liquid proposed by the present invention can meet the requirements of mixing, transporting, paving, and compacting in small sites. It has good fluidity, strong adhesion, is easy to operate, has a bright color, can adjust the ratio of asphalt liquid to different stone gradations to meet the application needs of different scenarios. At the same time, it is mixed and paved at normal temperature without high-temperature heating, reducing energy consumption and emissions; and the construction is convenient, with good fluidity, suitable for small sites and manual operation; and after being mixed with different dense-graded stones, it can meet the pavement requirements of different scenarios. After being mixed with dense-graded stones and paved and compacted, the pavement can withstand the rolling of medium and heavy vehicles; by adding pigments, diverse colors can be achieved to meet the requirements of landscape roads; the stones and asphalt liquid are mixed and paved at normal temperature, greatly reducing the actual application production cost and greatly reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a flowchart of the steps of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] As Figure 1 shown, the preparation method of the cold-mix cold-laying type colored asphalt liquid includes:

[0031] Step 1: Add softening oil to the reaction kettle and turn on the heating system;

[0032] Step 2: Sequentially add petroleum resin, antioxidant, and ultraviolet absorber, continuously heat it up to 120 °C, and keep stirring the reaction for 1 hour;

[0033] In the above Step 1 and Step 2, the input ratio of the petroleum resin is 37%-39%, the softening oil includes heavy aromatic oil, white oil, naphthenic oil, and waste engine oil, the input ratios of the heavy aromatic oil, white oil, naphthenic oil, and waste engine oil are 3%-10%, the input ratio of the solvent oil is 3%-8%, the raw material proportion quantity of the petroleum resin is 37 kg - 40 kg, the raw material proportion quantities of the heavy aromatic oil, waste engine oil, and solvent oil are 3 kg - 8 kg, 3 kg - 8 kg, and 6 kg - 10 kg respectively, the raw material proportion quantity of the modifier is 30.5 kg - 35.5 kg, the raw material proportion quantity of the antioxidant is 0.1 kg - 0.4 kg, the raw material proportion quantity of the ultraviolet absorber is 0.1 kg - 0.5 kg, the input ratios of the antioxidant and the ultraviolet absorber are both 0.1% - 0.2%, and the input ratio of the color powder is 8% - 12%;

[0034] It should be noted that: In the above Step 1 and Step 2, the optimal ratios of the input of the petroleum resin, antioxidant, and ultraviolet absorber are as follows:

[0035] The input ratio of the petroleum resin is 39%, the input ratios of the heavy aromatic oil, white oil, naphthenic oil, and waste engine oil are 10%, the input ratio of the solvent oil is 8%, the raw material proportion quantity of the petroleum resin is 39 kg, the raw material proportion quantities of the heavy aromatic oil, waste engine oil, and solvent oil are 5 kg, 5 kg, and 8 kg respectively, the raw material proportion quantity of the modifier is 32.5 kg, the raw material proportion quantity of the antioxidant is 0.2 kg, the raw material proportion quantity of the ultraviolet absorber is 0.3 kg, and the input ratio of the color powder is 10%;

[0036] Step 3: Cool down the operation in Step 2. When the temperature drops below 80 °C, add solvent oil and stir evenly for 20 minutes. When the temperature drops below 60 °C, add the self-made modifier and stir evenly to form a homogeneous fluid;

[0037] In the above Step 3, the input ratio of the modifier is 30.5% - 32.5%. The modifier includes SBS, SIS, naphthenic oil, and xylene. The input ratios of SBS and SIS inside the modifier are 18% - 25%, the input ratio of naphthenic oil inside the modifier is 0 - 10%, and the input ratio of xylene inside the modifier is 65% - 82%, but not limited to the ratio of the optimal embodiment;

[0038] It should be noted that the addition amount of xylene can cover the addition amount of naphthenic oil, and the substances that can be replaced by xylene include ethyl acetate, butyl acetate, and toluene;

[0039] Step 4: Add pigments to the reaction kettle and perform high-speed dispersion. The pigments include iron oxide red, phthalocyanine blue, iron oxide black, iron oxide yellow, chrome yellow, titanium white, etc.;

[0040] It should be noted that the added pigments are not limited to the above pigments, and the pigments also contain inorganic fillers such as calcium carbonate powder and talc powder;

[0041] In the said Step 4, the raw material ratio quantity of the iron oxide red pigment is 7 kg - 12 kg;

[0042] Step 5: Perform high-speed dispersion on the above-mentioned original particles, detect whether the color of the detection item is consistent with the color plate, and detect whether the fineness and viscosity meet the standards. After the raw materials are mixed qualified, discharge the materials and perform discharging and packaging.

[0043] The present invention is further specifically described in detail. Between Step 2 and Step 3, it is necessary to detect the petroleum resin to detect whether the petroleum resin is completely melted; in Step 4, before adding the modifier to the reaction kettle, it is necessary to perform special treatment on the self-made modifier. Mix SBS or SIS in a certain proportion with a high-temperature diluent and a viscosity reducer to form a transparent viscous liquid with a consistent state, and perform high-speed dispersion on it to completely dissolve the modifier;

[0044] Through the setting of the above technical solutions, by precisely controlling the heating, cooling, and dissolution processes, it is ensured that the raw materials react fully within a specific temperature range, thereby improving the production efficiency. In the key steps, the detection of the dissolution state of the petroleum resin and the pretreatment of the modifier are added, ensuring the complete dissolution and uniform mixing of the raw materials, and improving the quality control level of the product; the carefully designed raw material ratio, such as the reasonable input ratio of petroleum resin, softening oil (including heavy aromatic oil, white oil, naphthenic oil, and waste engine oil), solvent oil, and xylene, makes the final product have excellent physical properties and chemical stability; the addition of antioxidant and ultraviolet absorber effectively improves the weather resistance of the product and extends the service life;

[0045] In the preparation process, high-temperature environmentally friendly diluent and high-temperature plasticizer are introduced. These additives not only help to improve the processing performance of the product, but also meet the environmental protection requirements and reduce the impact on the environment; the reuse of waste engine oil not only reduces the production cost, but also realizes the recycling of resources, meeting the concept of sustainable development;

[0046] It should be noted that: petroleum resin provides bonding strength, softening oil and solvent oil regulate fluidity, and waste engine oil realizes resource recycling; the reaction temperature of 120 °C ensures sufficient melting of the resin and avoids high-temperature degradation; the modifier improves the viscoelasticity, adhesion and fatigue resistance of the petroleum resin, the antioxidant and ultraviolet absorber improve weather resistance, and the pigment ensures color stability;

[0047] It should be noted that: in actual application production, the powder content and dryness of stones and manufactured sand vary in different regions, and the proportion of asphalt will change. It is recommended to conduct a test according to the recommended ratio before construction. If the mixture appears dry and astringent, a certain amount of asphalt liquid can be appropriately added for adjustment; for medium-sized vehicle lanes, the grading can be determined according to local stones, stone chips, and mineral powder to determine the optimal grading.

[0048] The preparation method of the cold mix and cold lay type colored asphalt liquid proposed by the present invention has a wide range of application prospects. It can be used in various occasions such as road paving, parking lots, and sidewalks to meet the needs of different scenarios; by adjusting the types and proportions of pigments and fillers, different colors can be easily customized, increasing the diversity and flexibility of the product; moreover, the preparation method provided by the present invention has clear steps, is easy to operate, and is easy to industrialize and promote; by optimizing the raw material ratio and preparation process, the production cost is effectively reduced, and the market competitiveness of the product is improved.

[0049] Furthermore, this design application is used for the preparation of the cold mix and cold lay type colored asphalt liquid. The preparation method of the cold mix and cold lay type colored asphalt liquid proposed by the present invention can meet the requirements of mixing, transporting, paving, and compacting into shape for small sites. It has good fluidity, strong adhesion, is easy to operate, has bright colors, can adjust the ratio of the asphalt liquid to different stone gradings, and meets the application requirements of different scenarios. At the same time, it is mixed and paved at normal temperature without high-temperature heating, reducing energy consumption and emissions; moreover, the construction is convenient, the fluidity is good, and it is suitable for small sites and manual operation; after being mixed with different dense-graded stones, it can meet the road surface requirements of different scenarios. After being mixed with dense-graded stones and paved and compacted, the road surface can withstand the rolling of medium and heavy vehicles; by adding pigments, diverse colors can be achieved to meet the requirements of landscape roads; the stones and asphalt liquid are mixed and paved at normal temperature, greatly reducing the production cost of actual application and significantly reducing energy consumption.

[0050] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Preparation method of cold-mixed and cold-laid colored asphalt liquid, characterized in that, Including: Step 1: Add softening oil into the reactor and turn on the heating system. Step 2: Sequentially add petroleum resin, antioxidant, and ultraviolet absorber, continuously heat them up to 120 °C, and keep stirring the reaction for 1 hour. In Step 1 and Step 2, the input ratio of the petroleum resin is 37%-39%. The softening oil includes heavy aromatic oil, white oil, naphthenic oil, and waste engine oil. The input ratios of the heavy aromatic oil, white oil, naphthenic oil, and waste engine oil are 3%-10%. The input ratio of the solvent oil is 3%-8%. The raw material ratio quantity of the petroleum resin is 37 kg - 40 kg. The raw material ratio quantities of the heavy aromatic oil, waste engine oil, and solvent oil are 3 kg - 8 kg, 3 kg - 8 kg, and 6 kg - 10 kg respectively. The raw material ratio quantity of the modifier is 30.5 kg - 35.5 kg. The raw material ratio quantity of the antioxidant is 0.1 kg - 0.4 kg. The raw material ratio quantity of the ultraviolet absorber is 0.1 kg - 0.5 kg. The input ratios of both the antioxidant and the ultraviolet absorber are 0.1%-0.2%. The input ratio of the color powder is 8%-12%. Step 3: Cool down the operation in Step 2. When the temperature drops below 80 °C, add solvent oil and stir evenly for 20 minutes. When the temperature drops below 60 °C, add the self-made modifier and stir evenly to form a homogeneous fluid. In Step 3, the input ratio of the modifier is 30.5%-32.5%. The modifier includes SBS, SIS, naphthenic oil, and xylene. The input ratios of SBS and SIS inside the modifier are 18%-25%. The input ratio of the naphthenic oil inside the modifier is 0-10%. The input ratio of the xylene inside the modifier is 65%-82%. Step 4: Add pigments into the reactor and perform high-speed dispersion. The pigments include iron oxide red, phthalocyanine blue, iron oxide black, iron oxide yellow, chrome yellow, and titanium white. In Step 4, the raw material ratio quantity of the iron oxide red pigment is 7 kg - 12 kg. Step 5: Perform high-speed dispersion on the above raw materials, detect whether the color of the detection item is consistent with the color plate, and detect whether the fineness and viscosity meet the standards. After the raw material mixture is qualified, discharge the material and perform discharging and packaging.

2. The preparation method of the cold-mixed and cold-laid colored asphalt liquid according to claim 1, characterized in that: Between Step 2 and Step 3, it is necessary to detect the petroleum resin to check whether it is completely melted.

3. The preparation method of the cold-mix and cold-laying type colored asphalt liquid according to claim 1, characterized in that: In Step 4, before adding the modifier into the reactor, it is necessary to perform special treatment on the self-made modifier. Mix SBS or SIS in a certain proportion with a high-temperature diluent and a viscosity reducer to form a transparent viscous liquid with a consistent state, and perform high-speed dispersion on it to completely dissolve the modifier.

Images