Cold-mixed and cold-paved asphalt mixed paving material and manufacturing method thereof

Abstract

According to the cold-mixed and cold-paved asphalt mixed pavement material and the manufacturing method thereof, after an asphalt concrete (AC) pavement paved on an existing pavement is removed, the pavement is crushed into asphalt concrete slag charge and then recycled, an interface coagulant is added, pre-cold mixing is carried out, the asphalt concrete slag charge is wrapped and solidified, and the asphalt mixed pavement material is obtained. The preparation method comprises the following steps: adding a pre-cold-mixed asphalt concrete slag material into the pre-cold-mixed asphalt concrete slag material so that the pre-cold-mixed asphalt concrete slag material is easy to melt and joint with a water-based substance, adding a retarder for cold mixing so as to slow down the curing speed of the pre-cold-mixed asphalt concrete slag material, then adding a water-based light-hardened resin for cold mixing so that the raw material particles are easy to joint and bond, and pre-cold-mixing so as to complete the preparation process of the asphalt concrete pavement material. Therefore, the asphalt concrete pavement material does not need to be heated by fuel and is paved on the preset pavement in a cold paving manner, so that the aims of reducing the emission of carbon dioxide, heat and the like and saving electricity consumption are fulfilled.

Description

Cold mix cold laid asphalt mixed paving material and its production method Technical Field

[0001] The present invention relates to a cold-mixed and cold-laid asphalt mixture paving material and a method for producing the same, and more particularly to a method for producing an asphalt mixture without the need for heating treatment, wherein an interface coagulant, a retarder, and a water-based light-curing resin are added to the asphalt concrete residue recovered by planing, and the asphalt concrete (AC) paving material is completed through a cold-mixing operation, and then paved on a predetermined road surface through a cold-paving operation, thereby achieving the purpose of cold-mixing and cold-paving the asphalt concrete paving material. Background Art

[0002] With the changes in living habits and living environment, people are prone to high carbon emissions, high waste gas volumes, and large amounts of waste and pollutants when producing and manufacturing for their daily needs such as food, clothing, housing, transportation, and entertainment. These pollutants are present in the living environment, causing serious pollution of the air, water, and soil, which in turn causes serious global warming and affects the living and growth environment of all animals and plants, as well as people's physical and mental health. Therefore, people need to gradually raise their awareness of environmental protection and minimize the emission of carbon dioxide and heat in their daily lives, so as to slow down the pollution and damage to the living environment and avoid serious adverse effects on people's physical and mental health and the living environment.

[0003] In terms of transportation in daily life, roads are essential pathways to any destination. A small number of them are country roads paved with concrete, gravel, earth and stone, while urban roads, suburban roads, general highways, expressways or alley streets are mostly paved with asphalt concrete (AC) to facilitate the travel of people and vehicles. However, common asphalt concrete paved roads are easily damaged after a period of time due to sun and rain, vehicle pressure, and wheel rolling. In addition, asphalt concrete ages after long-term use, and its softening point and viscosity will increase with the increase of use, which will also lead to cracks, depressions or damage in the road surface. In other words, the old asphalt concrete pavement must be scraped off and re-paved to ensure the safety of people and vehicles.

[0004] Traditionally, old asphalt concrete pavements are scraped away and then discarded, which also causes environmental pollution and is quite inconsistent with environmental protection concepts and requirements. Therefore, relevant units have studied the recycling and reuse of the scraped old asphalt concrete pavements, using 40% recycled asphalt concrete residues and adding 60% new asphalt concrete materials, and adding heavy oil as a regeneration agent to reduce the viscosity of the asphalt concrete (reduced to However, when asphalt concrete is generally used for road paving, fuel (such as heavy oil, kerosene or natural gas) is used to heat the asphalt concrete and raw materials such as sand and gravel to maintain a predetermined temperature for pre-mixing. The pre-mixed asphalt concrete can have a buffer time to achieve the pre-mixing effect. However, during the pre-mixing heating process of asphalt concrete, the amount of fuel required is quite large and the temperature is quite high, so the amount of exhaust gas emitted is also large. The high temperature also has an indirect impact on surrounding objects and plants, causing serious environmental pollution. In addition, the proportion and amount of sand and gravel added to asphalt concrete are also quite large. The process of obtaining sand and gravel will also cause damage to rivers, hillsides and woodlands. However, when asphalt concrete is used for paving roads, it is a commonly used raw material in general road construction. Therefore, when paving asphalt concrete roads, the environmental pollution caused is also quite serious.

[0005] When premixed asphalt concrete is produced through fuel heating, if natural gas is used as the fuel, and the main component of natural gas is methane (CH4), then the number of moles of methane (CH4) in natural gas per degree [n] is calculated through the "ideal gas equation": PV = Nrt, where it is assumed that P = 1atm + 300mmH2O (user outlet pressure) = 104,267N / m2, and the volume of natural gas per degree V = 1m3, 1J = 1N.mR = 8.314J / mole·K, T = 293·K (20°C), so n = 42.8 mole, where N is Newton and J is Joule.

[0006] The combustion equation of methane (CH4) is: CH4+2O2→CO2+2H2O. It can be seen that the combustion of 1 mole of natural gas (assuming complete combustion) will produce 1 mole of carbon dioxide [CO2] (molecular weight 12+16*2=44).

[0007] Therefore, the carbon dioxide [CO2] produced by one degree of natural gas combustion is 42.8 moles, which is converted to weight:

[0008] Therefore, when paving asphalt concrete (AC) on roads, sand and gravel are added to the asphalt concrete for heating. The heating of each ton of sand and gravel consumes about 14 degrees of natural gas. Therefore, when one ton of asphalt concrete paving material is produced, the carbon dioxide [CO2] emissions generated are approximately: 14*1.88=26.32Kg; therefore, for the renovation of road pavements in Taipei, New Taipei City, and Keelung in one year, the asphalt concrete paving material required is approximately 1,500,000 tons, that is, the carbon dioxide [CO2] emissions are approximately 39,480,000Kg, which is approximately equal to 39,480 tons.

[0009] Furthermore, when using natural gas for heating, the calorific value released for each degree of natural gas used is approximately 9,000 Kcal, that is, the production of each ton of asphalt concrete paving material requires the release of approximately 126,000 Kcal. After the asphalt concrete paving material is heated to the required temperature and transported to the construction site for road paving, the asphalt concrete paving material is cooled to room temperature. During this period, all the calorific value of the asphalt concrete is dissipated into the air environment. Based on the asphalt concrete paving materials used for road paving in Taipei and New Taipei City in one year, the total calorific value emitted is approximately 1.89E11 Kcal, which is approximately 189 billion Kcal of calorific value energy.

[0010] Therefore, it can be seen that when paving asphalt concrete pavement on roads, the amount of carbon dioxide [CO2] and calorific value energy emitted due to heating the asphalt concrete pavement are quite considerable, which also directly causes pollution to the air and living environment and cannot be ignored.

[0011] Therefore, how to solve the problems and troubles caused by the current use of asphalt concrete to pave roads, as well as the troubles and shortcomings such as exhaust gas emissions and high temperatures that affect the environment, is the direction that relevant manufacturers engaged in this industry are eager to research and improve.

[0012] Summary of the Invention

[0013] Therefore, in view of the above problems and deficiencies, the main object of the present invention is to provide a cold-mix cold-laid asphalt mixed paving material and a manufacturing method thereof.

[0014] The present invention provides a cold-mix cold-laid asphalt mixed paving material, which includes asphalt concrete slag, an interfacial coagulant, a retarder and a water-based light-curing resin, wherein the asphalt concrete slag is asphalt concrete slag recycled from road surface scraping; the added interfacial coagulant is used to wrap and solidify the asphalt concrete slag, and the interfacial coagulant contains calcium carbonate, magnesium carbonate, stone powder, glass powder, cement and carbon ash as raw materials; the added retarder is used to slow down the solidification of the pre-mixed asphalt concrete slag, and the retarder contains seaweed powder and water as raw materials; as for the added water-based light-curing resin, it is used to facilitate the bonding and adhesion between the raw material particles of the asphalt concrete, the interfacial coagulant and the retarder, and it contains epoxy resin, silicone acrylic copolymer resin and water as raw materials.

[0015] In the embodiment of the cold mix cold laid asphalt paving material of the present invention, the asphalt concrete slag is obtained by planing away the asphalt concrete (AC) pavement of an existing road surface, crushing it into asphalt concrete slag, and then recycling it for reuse.

[0016] In an embodiment of the cold-mix cold-laid asphalt mixed paving material of the present invention, the interface coagulant added to the asphalt concrete includes 25% by weight (wt) of calcium carbonate [CaCO3], 15% by weight (wt) of magnesium carbonate [MgCO3], 20% by weight (wt) of stone powder, 10% by weight (wt) of glass powder, 25% by weight (wt) of cement and 5% by weight (wt) of carbon ash and other material raw materials; and the powder particle size of the stone powder and glass powder is less than 200 μm; and the added retarder includes 0.6% by weight (wt) of seaweed powder and 99.4% by weight (wt) of water and other material raw materials; and the added water-based light-curing resin includes 30% by weight (wt) of epoxy resin, 15% by weight (wt) of silicone acrylic copolymer resin and 55% by weight (wt) of water and other material raw materials.

[0017] The present invention also provides a method for producing cold-mixed and cold-laid asphalt mixed paving materials, which comprises planing the asphalt concrete (AC) pavement of an existing road surface, crushing it, and recycling the crushed asphalt concrete slag. An interfacial coagulant is added to wrap and solidify the asphalt concrete slag, making it easy to dissolve and bond with aqueous substances. A retarder is added for cold mixing to slow down the solidification speed of the asphalt concrete slag after pre-cold mixing. A water-based light-curing resin is then added for cold mixing to facilitate bonding and adhesion between the raw material particles, thereby completing the process of pre-cold mixing to produce asphalt concrete paving materials. The asphalt concrete paving materials do not need to be heated using fuel, that is, they are laid on the predetermined road surface in a cold-laid manner, thereby achieving the purpose of reducing emissions of carbon dioxide, heat, etc., and saving electricity, thereby having the effect of energy saving and carbon reduction, and meeting environmental protection requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG1 is a flow chart of the present invention. DETAILED DESCRIPTION

[0019] In order to achieve the above-mentioned objectives and effects, the technical means adopted by the present invention, as well as its structure, implementation method, etc., are now described in detail with reference to the accompanying drawings for the characteristics and functions of the preferred embodiments of the present invention to facilitate a complete understanding.

[0020] Please refer to FIG1 , which is a flow chart of the present invention. As can be clearly seen from the figure, the cold-mix cold-laid asphalt mixed paving material of the present invention comprises asphalt concrete slag, an interfacial coagulant, a retarder, and a water-based light-curing resin, wherein:

[0021] The asphalt concrete slag is recycled from asphalt concrete slag removed from the road surface.

[0022] The interface coagulant contains raw materials such as calcium carbonate, magnesium carbonate, stone powder, glass powder, cement and carbon ash.

[0023] The retarder comprises raw materials such as seaweed powder and water.

[0024] The water-based light-curing resin comprises epoxy resin, silicone acrylic copolymer resin, water and other material raw materials.

[0025] The addition of the interfacial coagulant to the asphalt concrete residue is to wrap and solidify the asphalt concrete residue; the addition of the retarder is to slow down the solidification of the premixed asphalt concrete residue; and the addition of the water-based light-curing resin is to facilitate the bonding and adhesion between the raw material particles of the asphalt concrete, the interfacial coagulant and the retarder.

[0026] The interface coagulant added to the above-mentioned asphalt concrete mixed paving material includes 25% weight percentage (wt) of calcium carbonate [CaCO3], 15% weight percentage (wt) of magnesium carbonate [MgCO3], 20% weight percentage (wt) of stone powder, 10% weight percentage (wt) of glass powder, 25% weight percentage (wt) of cement and 5% weight percentage (wt) of carbon ash and other material raw materials; and the powder particle size of the stone powder and glass powder is less than 200μm.

[0027] The retarder added to the above-mentioned asphalt concrete mixed paving material includes 0.6% by weight (wt) of seaweed powder and 99.4% by weight (wt) of water and other material raw materials.

[0028] Furthermore, the water-based light-curing resin added to the above-mentioned asphalt concrete mixed paving material includes 30% by weight (wt) of epoxy resin, 15% by weight (wt) of silicone acrylic copolymer resin and 55% by weight (wt) of water and other material raw materials.

[0029] The method for producing the cold-mix cold-laid asphalt paving material of the present invention is carried out according to the following steps:

[0030] (A01) The asphalt concrete (AC) pavement of the existing road surface is planed off and crushed into asphalt concrete slag for recycling.

[0031] (A02) An interfacial coagulant is added to the crushed asphalt concrete residue to coat and solidify the asphalt concrete residue and facilitate its dissolution and bonding with aqueous materials.

[0032] (A03) A retarder is added to the asphalt concrete residue to which the interfacial coagulant has been added for cold mixing, so as to slow down the curing speed of the asphalt concrete residue after the pre-cold mixing.

[0033] (A04) Add water-based light-hardening resin to the asphalt concrete residue to which the interface coagulant and retarder have been added, and then cold mix them to facilitate the bonding and adhesion between the raw material particles of the interface coagulant, retarder and asphalt concrete residue, so as to pre-cold mix the asphalt concrete paving material.

[0034] (A05) Complete the cold mix process of asphalt concrete paving mixture.

[0035] (A06) The asphalt concrete paving mixture does not need to be heated by fuel and is laid on the predetermined road surface in a cold laying manner.

[0036] The above-mentioned method for producing cold-mixed and cold-laid asphalt mixed paving materials of the present invention is to carry out cold-temperature premixing in a room temperature environment without heating, that is, no fuel (such as heavy oil, kerosene or natural gas, etc.) is required for heating, and no exhaust gas and high temperature are emitted, so it will not cause pollution or damage to the environment; and the asphalt concrete mixed paving materials that have been premixed at cold temperature are then laid on the predetermined road surface by a room temperature cold laying method, which can also avoid the impact or damage to surrounding animals and plants caused by high temperature, and after laying, no large amount of heat value will be released into the air environment, which can effectively avoid pollution to the air environment.

[0037] In addition, the method for producing cold-mixed and cold-laid asphalt mixed paving materials of the present invention adopts cold mixing operation to produce asphalt concrete mixed paving materials. Since the raw materials are water-based and do not require heating treatment, there is no need to use exhaust windmills (100Hp), dryers (50Hp), elevators (30Hp), vibrating screens (30Hp), and asphalt storage tanks (150Hp) in the process of producing asphalt concrete mixed paving materials, which consumes a total of about 360Hp = 270KW of electricity. The asphalt concrete mixed paving material factory produces about 100 tons of asphalt concrete mixed paving materials per hour. If the demand is 1,50 According to the production method of 10,000 tons of asphalt concrete mixed paving materials, the asphalt concrete paving material factory needs to operate for 15,000 hours, which can save about 4,050,000 kWh of electricity. That is, the asphalt concrete mixed paving material produced by the present invention using cold mixing operation has unexpected effects; and because the present invention uses cold mixing operation to produce asphalt concrete mixed paving materials, it does not use asphalt required for gluing in the traditional production of asphalt concrete mixed paving materials. Therefore, the asphalt concrete mixed paving material produced by the present invention using cold mixing operation can achieve non-toxic, tasteless and odorless properties, and can also meet environmental protection requirements and be friendly to the living environment.

[0038] The above description is merely a preferred embodiment of the present invention and does not limit the scope of patent protection of the present invention. Therefore, any simple modifications and equivalent structural changes made by using the contents of the present invention's description and drawings should be included in the scope of patent protection of the present invention.

[0039] In summary, the cold-mixed cold-laid asphalt mixed paving material and its production method described in the present invention can indeed achieve their efficacy and purpose when actually implemented and used. Therefore, the present invention is an invention with excellent practicality and meets the requirements for applying for an invention patent.

Claims

1. A cold mix cold laid asphalt paving material comprising asphalt concrete slag, an interfacial coagulant, a retarder and a water-based light-curing resin, characterized in that: The asphalt concrete slag is recycled from road surface scraping; The interface coagulant is used to wrap and solidify the asphalt concrete slag, and the interface coagulant contains calcium carbonate, magnesium carbonate, stone powder, glass powder, cement and carbon ash; The retarder is used to slow down the solidification of the premixed asphalt concrete slag, and the retarder contains seaweed powder and water; and The water-based light-hardening resin is used to facilitate the bonding and adhesion between the raw material particles of the asphalt concrete, the interface coagulant and the retarder. The water-based light-hardening resin contains epoxy resin, silicone acrylic copolymer resin and water.

2. The cold mix cold laid asphalt paving material according to claim 1, characterized in that: The asphalt concrete slag is obtained by planing away the asphalt concrete (AC) pavement of an existing road surface, crushing it into asphalt concrete slag, and then recycling it for reuse.

3. The cold mix cold laid asphalt paving material according to claim 1, characterized in that: The interfacial coagulant comprises 25% by weight (wt) of calcium carbonate [CaCO3], 15% by weight (wt) of magnesium carbonate [MgCO3], 20% by weight (wt) of stone powder, 10% by weight (wt) of glass powder, 25% by weight (wt) of cement and 5% by weight (wt) of carbon ash; and the powder particle size of the stone powder and the glass powder is less than 200 μm.

4. The cold mix cold laid asphalt paving material according to claim 1, characterized in that: The retarder comprises 0.6 weight percent (wt) of the seaweed powder and 99.4 weight percent (wt) of the water.

5. The cold mix cold laid asphalt paving material according to claim 1, characterized in that: The water-based light-curing resin includes 30% by weight (wt) of the epoxy resin, 15% by weight (wt) of the silicone-acrylic copolymer resin, and 55% by weight (wt) of the water.

6. A method for producing cold mix cold laid asphalt mixed paving material, characterized by: It is implemented according to the following steps: (A01) After the asphalt concrete (AC) pavement of the existing road is removed, it is crushed into asphalt concrete slag and then recycled; (A02) adding an interfacial coagulant to the crushed asphalt concrete residue and pre-cold mixing the mixture, whereby the interfacial coagulant coats and solidifies the asphalt concrete residue and facilitates dissolution and bonding with aqueous materials; (A03) adding a retarder to the asphalt concrete residue to which the interfacial coagulant has been added and performing cold mixing to slow down the curing speed of the asphalt concrete residue after the pre-cold mixing; (A04) adding a water-based light-curing resin to the asphalt concrete slag to which the interfacial coagulant and the retarder have been added, and cold mixing the mixture to facilitate bonding and adhesion between the interfacial coagulant, the retarder, and the raw material particles of the asphalt concrete slag, thereby pre-cold mixing the mixture into an asphalt concrete paving material; (A05) completing the cold mix process of the asphalt concrete mixed paving material; and (A06) The asphalt concrete mixed paving material does not need to be heated by fuel and is laid on the predetermined road surface in a cold laying manner.

7. The method for producing cold mix cold laid asphalt paving material according to claim 6, characterized in that: The asphalt concrete slag in step (A01) is obtained by planing away the asphalt concrete (AC) pavement of the existing road surface, crushing it into asphalt concrete slag, and then recycling it for reuse.

8. The method for producing cold-mix cold-laid asphalt mixed paving material according to claim 6, characterized in that: In the step (A02), the interfacial coagulant comprises 25% by weight (wt) of the calcium carbonate [CaCO3], 15% by weight (wt) of the magnesium carbonate [MgCO3], 20% by weight (wt) of the stone powder, 10% by weight (wt) of the glass powder, 25% by weight (wt) of the cement and 5% by weight (wt) of the carbon ash; and the powder particle size of the stone powder and the glass powder is less than 200 μm.

9. The method for producing cold mix cold laid asphalt paving material according to claim 6, characterized in that: In the step (A03), the retarder comprises 0.6% by weight (wt) of the seaweed powder and 99.4% by weight (wt) of the water.

10. The method for producing cold mix cold laid asphalt paving material according to claim 6, characterized in that: In the step (A04), the water-based light-curing resin includes 30% by weight (wt) of the epoxy resin, 15% by weight (wt) of the silicone-acrylic copolymer resin, and 55% by weight (wt) of the water.

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