Method for designing mixtures for paving asphalt mixtures, method for manufacturing paving asphalt mixtures, and paving asphalt mixtures

Abstract

Provided is technology that makes it possible for an asphalt mixture to exhibit a suitable void ratio and saturation, even in a case where synthetic calcium carbonate is used.　A blend design method for an asphalt mixture of the present disclosure comprises a determination step in which a ratio r1 (mass%) of a first filler and a ratio r2 (mass%) of a second filler are determined so that a converted specific surface area B0 (m2 / g) is 5.00 (m2 / g) or less, B0 being calculated on the basis of: a BET specific surface area B1 (m2 / g) of the first filler that includes a synthetic calcium carbonate powder; a BET specific surface area B2 (m2 / g) of the second filler that includes a calcium carbonate powder produced in a process that is at least different from that of the synthetic calcium carbonate powder; the ratio r1 (mass%) of the mass of the first filler to the sum of the mass of the first filler and the mass of the second filler; and the ratio r2 (mass%) of the mass of the second filler to the sum of the mass of the first filler and the mass of the second filler.

Description

[Technical Field]

[0001] The present invention makes it possible to develop appropriate porosity and saturation. For paving Mix design method for asphalt mixtures; For paving Asphalt mixture manufacturing method and For paving Regarding asphalt mixtures. [Background technology]

[0002] To reduce carbon dioxide emissions, a method is known in which calcium carbonate is produced by immobilizing carbon dioxide on calcium ions. Calcium carbonate produced in this way is called synthetic calcium carbonate (also known as precipitated calcium carbonate or precipitated calcium carbonate).

[0003] Asphalt mixtures used in asphalt pavements contain a certain amount of stone powder, a filler produced by crushing limestone. Standards for this include the Pavement Design and Construction Guidelines (2006 edition, Japan Road Association, Public Interest Incorporated Association) and the Limestone Powder for Paving (JIS A 5008). The main component of stone powder is calcium carbonate (also known as ground calcium carbonate), formed primarily by crushing limestone. However, the particle size distribution of ground calcium carbonate differs significantly from that of synthetic calcium carbonate. The asphalt mixture design method described in the Pavement Design and Construction Guidelines uses sieves to evaluate particle size. Therefore, even if the particle size of the asphalt mixture is adjusted using synthetic calcium carbonate, the resulting asphalt mixture cannot achieve the appropriate Marshall characteristic values, particularly the void ratio and degree of saturation.

[0004] Conventionally, technology relating to an asphalt mixture filler for reducing environmental impact has been disclosed in Patent Document 1. The technology disclosed in Patent Document 1 is made from recycled fine powder obtained by heating and grinding waste concrete, and is mixed into the asphalt mixture that forms the pavement surface layer.

[0005] However, in the technology disclosed in Patent Document 1, the particle size of the recycled fine powder is evaluated using a sieve. Therefore, even if a sieve is used to adjust the particle size of an asphalt mixture using synthetic calcium carbonate, it is not possible to obtain an asphalt mixture that exhibits an appropriate void ratio and degree of saturation. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-261905 Summary of the Invention [Problem to be solved by the invention]

[0007] Therefore, the present disclosure has been devised in consideration of the above-mentioned circumstances, and its purpose is to provide a method for producing calcium carbonate even when synthetic calcium carbonate is used. For paving The present invention aims to provide a technology that enables an asphalt mixture to develop an appropriate void ratio and degree of saturation. [Means for solving the problem]

[0008] According to one embodiment of the present disclosure, the BET specific surface area B1 (m 2 / g), and the BET specific surface area B2 (m 2 / g), the ratio of the mass of the first filler to the sum of the mass of the first filler and the mass of the second filler is r1 (mass%), and the ratio of the mass of the second filler to the sum of the mass of the first filler and the mass of the second filler is r2 (mass%), the converted specific surface area B0 (m 2 / g) is 5.00 (m 2The present invention can provide a technology characterized by comprising a determination step of determining the mass ratio r1 (mass%) of the first filler and the mass ratio r2 (mass%) of the second filler to be mixed into the asphalt composition so that the mass ratio r1 (mass%) of the first filler and the mass ratio r2 (mass%) of the second filler are not more than 1 / g.

[0009]

number

[0010] According to the present disclosure, it is possible to provide a technique that makes it possible to realize an appropriate porosity and degree of saturation. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a flowchart showing an example of a method for designing a mix of an asphalt mixture that is preferably used in this embodiment. [Figure 2] 1 is a flowchart showing an example of a method for producing an asphalt mixture that is preferably used in this embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0012] As described above, the present inventors have conducted extensive research into the mix design method for asphalt mixtures, the manufacturing method for asphalt mixtures, and asphalt mixtures. As a result, the BET specific surface area B1 (m 2 / g), and the BET specific surface area B2 (m 2 / g), and the converted specific surface area B0 (m 2 / g) is 5.00 (m 2The present inventors have newly discovered that the ratio r1 (mass%) of the first filler and the ratio r2 (mass%) of the second filler to be mixed into the asphalt composition can be determined so that the ratio r1 (mass%) of the first filler and the ratio r2 (mass%) of the second filler are not more than 1 / g, thereby completing the technology of the present disclosure.

[0013] The method for designing the mix of an asphalt mixture, the method for manufacturing an asphalt mixture, and the asphalt mixture according to this embodiment will be described in detail below.

[0014] The method for designing the asphalt mixture in this embodiment is to determine the BET specific surface area B1 (m 2 / g), and the BET specific surface area B2 (m 2 / g), the ratio of the mass of the first filler to the sum of the mass of the first filler and the mass of the second filler is r1 (mass%), and the ratio of the mass of the second filler to the sum of the mass of the first filler and the mass of the second filler is r2 (mass%), the converted specific surface area B0 (m 2 / g) is 5.00 (m 2 The method includes a determining step of determining the ratio r1 (mass %) of the first filler to be mixed into the asphalt composition and the ratio r2 (mass %) of the second filler so that the ratio r1 (mass %) of the second filler to be mixed into the asphalt composition is equal to or less than r2 (mass %).

[0015] The method for producing an asphalt mixture in this embodiment is to determine the BET specific surface area B1 (m 2 / g), and the BET specific surface area B2 (m 2 / g), the ratio of the mass of the first filler to the sum of the mass of the first filler and the mass of the second filler is r1 (mass%), and the ratio of the mass of the second filler to the sum of the mass of the first filler and the mass of the second filler is r2 (mass%), the converted specific surface area B0 (m 2 / g) is 5.00 (m 2The method includes a determining step of determining the ratio r1 (mass%) of the first filler and the ratio r2 (mass%) of the second filler to be mixed into the asphalt composition so that the ratio r1 (mass%) of the first filler and the ratio r2 (mass%) of the second filler are equal to or less than 1 / g, and a mixing step of mixing the first filler at the ratio r1 (mass%) and the second filler at the ratio r2 (mass%) into the asphalt composition.

[0016]

number

[0017] The asphalt mixture of this embodiment is produced by the asphalt mixture production method of this embodiment.

[0018] The method for designing the mix of an asphalt mixture, the method for manufacturing an asphalt mixture, and the asphalt in this embodiment will be described below.

[0019] (Asphalt mixture) The asphalt mixture of this embodiment includes either or both of a first filler and a second filler, an asphalt composition, fine aggregate, and coarse aggregate. Asphalt mixtures used for general pavements are designed to contain approximately 5% asphalt composition, approximately 5% filler (first filler + second filler), and approximately 90% fine aggregate and coarse aggregate (crushed stone, sand). The asphalt mixture of the present disclosure is not limited to general pavements, but can also be used for general pavements, such as those on bridges that use a mixture of filler, aggregate, and asphalt composition.

[0020] (First filler and second filler) The first filler in this embodiment includes powdered synthetic calcium carbonate produced by reacting at least carbon dioxide gas. Examples of synthetic calcium carbonate include precipitated calcium carbonate (also called light calcium carbonate) produced by a carbon dioxide gas process, in which carbon dioxide gas is blown into a solution containing calcium ions, such as lime water, to cause precipitation. Examples of synthetic calcium carbonate include calcium carbonate produced by a soluble salt reaction process, in which a calcium chloride solution produced as a by-product of the ammonia soda process is mixed with a soluble salt solution, such as a sodium carbonate solution. Other well-known synthetic calcium carbonates produced by reacting carbon dioxide gas can also be used.

[0021] The second filler in this embodiment contains at least calcium carbonate, which is produced by a process different from that of synthetic calcium carbonate. The second filler contains at least stone powder (also called ground calcium carbonate) produced by crushing limestone. The second filler may contain, for example, powdered eggshells, dolomite (CaMg(CO3)2), calcite, or the like, which contain calcium carbonate as a main component.

[0022] At least 70% by mass of the first filler and the second filler pass through a 0.075 mm sieve. The sum of the masses of the first filler and the second filler is included in a predetermined amount as needed, but is included in an amount of, for example, 3% by mass or more and 5% by mass or less relative to the mass of the entire asphalt mixture.

[0023] If the filler added to the asphalt composition is 100 (mass%), the ratio of the mass of the first filler to the sum of the mass of the first filler and the mass of the second filler is r1 (mass%), and the ratio of the mass of the second filler to the sum of the mass of the first filler and the mass of the second filler is r2 (mass%), then r1 + r2 = 100 (mass%).

[0024] In the present disclosure, the BET specific surface area B1 (m 2 / g), and the BET specific surface area B2 (m 2 / g), the BET specific surface area of ​​the first filler is B1 (m 2 / g) and the BET specific surface area of ​​the second filler is B2 (m 2 / g) can be measured using a known BET specific surface area measuring device. The relative pressure P / P0 when measuring the BET specific surface area in the present disclosure is 0 or more and 0.5 or less, preferably 0.05 or more and 0.4 or less, and more preferably 0.1 or more and 0.3 or less. By measuring the BET specific surface area within this relative pressure range, it is possible to appropriately obtain the BET specific surface areas P / P0 of the first filler and the second filler.

[0025] The converted specific surface area B0 satisfies the following formula (1).

[0026]

number

[0027] Here, the voids between the compacted aggregate must be filled with asphalt, leaving a certain amount of voids. The percentage of the total mixture occupied by the remaining voids is the "void ratio," and the percentage of the aggregate voids filled with asphalt (asphalt composition) is the "degree of saturation."

[0028] Void ratio is a very important characteristic that affects the stability and durability of asphalt pavement. Mixtures with a high void ratio have poor watertightness and age quickly, resulting in poor durability. On the other hand, mixtures with too little void ratio tend to become unstable due to compaction caused by heavy traffic and thermal expansion of asphalt at high temperatures.

[0029] The degree of saturation is the degree to which asphalt fills the gaps between the aggregates in the asphalt mixture. A mixture with too high a degree of saturation has a low void ratio and tends to become unstable due to compaction caused by heavy traffic and thermal expansion of the asphalt at high temperatures. On the other hand, a mixture with too low a degree of saturation has a high void ratio, is less watertight, and ages more rapidly, resulting in poor durability.

[0030] In other words, it is necessary for the mixture to have sufficient pores to ensure durability and impermeability without becoming unstable even when the mixture is sufficiently compacted by traffic loads or when the asphalt expands at high temperatures. The desirable void ratio is approximately 3% (volume %) to 6% (volume %), and the desirable degree of saturation is 70% to 85% as specified in the Pavement Design and Construction Guidelines (Japan Road Association, 2006 edition) for dense-graded asphalt mixtures (13). Therefore, in this embodiment, it is stated that an appropriate void ratio and degree of saturation can be achieved when the void ratio is 3% (volume %) to 6% (volume %) and the degree of saturation is 70% to 85%.

[0031] The converted specific surface area B0 in this embodiment is 5.00 (m 2 / g) or less. This allows the asphalt mixture to exhibit an appropriate void ratio and degree of saturation. 2 / g), the asphalt will easily soak in, increasing the amount that can be attached. Therefore, for the same aggregate particle size and asphalt content, the amount of asphalt that should fill the gaps between the aggregate will decrease, increasing the void ratio and decreasing the degree of saturation. As a result, the asphalt mixture will not be able to achieve the appropriate void ratio and degree of saturation. The converted specific surface area B0 is 0.30 (m 2 / g) or more.

[0032] The converted specific surface area B0 is 5.00 (m 2 / g) or less, r1 may be set to 100 (mass%) and r2 may be set to 0 (mass%). In this case, only the first filler is mixed into the asphalt mixture. Alternatively, r1 may be set to 0 (mass%) and r2 may be set to 100 (weight%). In this case, only the second filler is mixed into the asphalt composition.

[0033] (Asphalt composition) The asphalt composition in this embodiment can be any asphalt composition, such as a straight asphalt composition, a polymer-modified asphalt composition, etc. The mass of the asphalt composition is contained in a predetermined amount as needed, and is, for example, 3.5 mass% to 9.5 mass% relative to the mass of the entire asphalt mixture.

[0034] (fine aggregate) The fine aggregate in this embodiment is, for example, aggregate that passes through a 2.36 mm sieve. The fine aggregate may be any well-known material used in asphalt mixtures, such as natural sand, such as river sand, mountain sand, or sea sand, or artificial sand, such as screenings or crushed stone dust.

[0035] (coarse aggregate) The coarse aggregate in this embodiment is, for example, aggregate that passes through a 2.36 mm sieve. As the coarse aggregate, well-known aggregates used in asphalt mixtures, such as crushed stone, gravel, boulders, or crushed gravel, are used.

[0036] Next, a method for designing the mix of an asphalt mixture in this embodiment will be described.

[0037] <Asphalt mixture mix design method> The method for designing a mix for an asphalt mixture includes a measuring step S110 and a determining step S120.

[0038] (Measurement process S110) In the measuring step S110, a BET specific surface area B1 of the first filler and a BET specific surface area B2 of the second filler are measured using a BET specific surface area measuring device. Note that if the BET specific surface area B1 of the first filler and the BET specific surface area B2 of the second filler have been measured in advance, the measuring step S110 can be omitted.

[0039] (Decision step S120) In the determination step S120, the converted specific surface area B0 calculated by the above-mentioned formula (1) is 5.00 (m 2The ratio r1 and the ratio r2 are determined so that the ratio r1 is equal to or less than r2 / g.

[0040] For example, in the determination step S120, the converted specific surface area B0 that satisfies the above-mentioned formula (1) is calculated from the BET specific surface area B1 of the first filler, the BET specific surface area B2 of the second filler, and the arbitrary ratio r1 and the arbitrary ratio r2. Then, of the calculated converted specific surface areas B0, if the converted specific surface area B0 is 5.00 (m 2 The ratio r1 and ratio r2 calculated so that the ratio r1 is equal to or less than 1 / g may be determined as the ratio r1 of the first filler and the ratio r2 of the second filler to be mixed into the asphalt composition.

[0041] For example, in the determination step S120, the converted specific surface area B0 is determined to be 5.00 (m 2 The range between the upper and lower limits of ratio r1 and the range between the upper and lower limits of ratio r2 are calculated so that the upper and lower limits of ratio r1 and r2 satisfy the following: (1 / g) or less. In the determination step S120, ratio r1 is determined within the range between the upper and lower limits of the calculated ratio r1, and ratio r2 of the second filler to be mixed into the asphalt composition is determined within the range between the upper and lower limits of ratio r2.

[0042] <Asphalt mixture manufacturing method> The method for producing an asphalt mixture includes a measuring step S110, a determining step S120, and a mixing step S130. The measuring step S110 and the determining step S120 are the same as those described above, and therefore will not be described here.

[0043] In the mixing step S130, the first filler at a ratio r1 (mass%) determined in the determining step S120 and the second filler at a ratio r2 (mass%) are mixed into the asphalt composition. Also in the mixing step S130, fine aggregate and coarse aggregate are mixed into the asphalt composition. Then, in the mixing step S130, these are stirred in a stirring vessel or the like to produce an asphalt mixture.

[0044] According to this embodiment, the BET specific surface area B1 (m 2 / g), and the BET specific surface area B2 (m 2 / g), the ratio of the mass of the first filler to the sum of the mass of the first filler and the mass of the second filler is r1 (mass%), and the ratio of the mass of the second filler to the sum of the mass of the first filler and the mass of the second filler is r2 (mass%). 2 / g) is 5.00 (m 2 The method includes a determining step of determining the ratio r1 (mass %) of the first filler and the ratio r2 (mass %) of the second filler to be mixed into the asphalt composition so that the ratio r1 (mass %) of the first filler and the ratio r2 (mass %) of the second filler are not more than 1 / g.

[0045] This allows consideration of mixing a first filler containing synthetic calcium carbonate powder when designing an asphalt mixture. Even when mixing a first filler containing synthetic calcium carbonate powder, it is possible to manufacture an asphalt mixture that can exhibit appropriate porosity and degree of saturation.

[0046] In particular, when a first filler containing synthetic calcium carbonate powder is mixed into an asphalt composition, it contributes to reducing carbon dioxide gas emissions, making it possible to reduce the environmental impact when producing an asphalt mixture. [Example]

[0047] The following will specifically explain the present embodiment by giving examples and comparative examples.

[0048] Asphalt mixture specimens were prepared using the materials listed in Table 1. The specimens were cylindrical Marshall specimens of a specified shape based on the "B001 Marshall Stability Test Method" described in the Pavement Evaluation and Testing Methods Handbook (compiled by the Japan Road Association, a public interest incorporated association, June 2007). In this example, as shown in Table 2, first filler A and first filler B, which have different BET specific surface areas, were used as the first filler. Table 3 shows the ratio of the first filler ratio r1 to the second filler ratio r2 for each specimen. In Table 3, A represents first filler A, B represents first filler B, and C represents second filler C.

[0049] [Table 1]

[0050] [Table 2]

[0051] [Table 3]

[0052] Here, the voids between the compacted aggregate must be filled with asphalt, leaving a certain amount of voids. The percentage of the total mixture occupied by the remaining voids is the "void ratio," and the percentage of the aggregate voids filled with asphalt is the "degree of saturation."

[0053] Void ratio is a very important characteristic that affects the stability and durability of asphalt pavement. Mixtures with a high void ratio have poor watertightness and age quickly, resulting in poor durability. On the other hand, mixtures with too little void ratio tend to become unstable due to compaction caused by heavy traffic and thermal expansion of asphalt at high temperatures.

[0054] The degree of saturation is the degree to which asphalt fills the gaps between the aggregates in the asphalt mixture. A mixture with too high a degree of saturation has a low void ratio and tends to become unstable due to compaction caused by heavy traffic and thermal expansion of the asphalt at high temperatures. On the other hand, a mixture with too low a degree of saturation has a high void ratio, is less watertight, and ages more rapidly, resulting in poor durability.

[0055] In other words, even when the mixture is sufficiently compacted by traffic loads or when the asphalt expands at high temperatures, it must not become unstable and must have sufficient pores to ensure durability and impermeability. A desirable void ratio is approximately 3 (volume%) to 6 (volume%), and a desirable degree of saturation is 70% to 85%. For this reason, in this example, it is stated that an appropriate void ratio and degree of saturation can be achieved when the void ratio is 3 (volume%) to 6 (volume%) and the degree of saturation is 70% to 85%.

[0056] Therefore, in this example, the void ratio and degree of saturation of the prepared specimens were measured based on "B008 Density Test Method for Asphalt Mixtures" described in the Pavement Evaluation and Test Methods Handbook (compiled by the Japan Road Association, a public interest incorporated association, June 2007).

[0057] Table 4 shows the results of measuring the void ratio and degree of saturation. In this example, when the void ratio is 3 (volume %) or more and 6 (volume %) or less and the degree of saturation is 70% or more and 85% or less, it is evaluated as being able to achieve the void ratio and degree of saturation appropriate for the asphalt mixture, and is represented by "◯" in Table 4. In all other cases, it is evaluated as being unable to achieve the void ratio and degree of saturation appropriate for the asphalt mixture, and is represented by "×" in Table 4. Table 4 also shows the converted specific surface area B0 of each specimen calculated based on the above formula (1).

[0058] [Table 4]

[0059] In Examples 1 to 7, the converted specific surface area B0 was 5.00 (m 2 / g) or less. As a result, in Examples 1 to 7, the porosity and degree of saturation satisfied the evaluation criteria. Therefore, the converted specific surface area B0 was 5.00 (m 2 / g) or less, an appropriate void ratio and degree of saturation for the asphalt mixture can be achieved.

[0060] On the other hand, in Comparative Example 1, the converted specific surface area B0 was 5.00 (m 2 / g). As a result, the porosity and degree of saturation of Comparative Example 1 did not satisfy the evaluation criteria. Therefore, the converted specific surface area B0 was 5.00 (m 2 / g), the asphalt mixture cannot exhibit an appropriate void ratio and degree of saturation.

[0061] When designing the mix of asphalt mixture using the first filler A and the second filler C, the converted specific surface area B0 is 5.00 (m 2 / g) or less, the ratio r1 of the first filler to be mixed into the asphalt composition is determined to be 50%, and the ratio r2 of the second filler is determined to be 50%, for example.

[0062] In addition, when designing the mix of asphalt mixture using the first filler A and the second filler C, the converted specific surface area B0 is 5.00 (m 2 / g), r1≧0 (mass%), r2≧0 (mass%), and r1+r2=100 (mass%) are all satisfied in the range of r1 and r2 as shown in the following formula (2).

[0063]

number

[0064] Therefore, when designing the mix of an asphalt mixture using the first filler A and the second filler C, the ratio r1 and the ratio r2 may be determined within the range of the above formula (2), for example.

[0065] When designing the mix of asphalt mixture using the first filler B and the second filler C, the converted specific surface area B0 is 5.00 (m 2 / g) or less, the ratio r1 of the first filler to be mixed into the asphalt composition is determined to be 60%, and the ratio r2 of the second filler to be mixed into the asphalt composition is determined to be 40%, for example.

[0066] For example, when designing an asphalt mixture using the first filler B and the second filler C, the converted specific surface area B0 is 5.00 (m 2 / g), r1≧0 (mass%), r2≧0 (mass%), and r1+r2=100 (mass%) are all satisfied in the range of r1 and r2 as shown in the following formula (3).

[0067]

number

[0068] Therefore, when designing the mix of an asphalt mixture using the first filler B and the second filler C, the ratio r1 and the ratio r2 may be determined within the range of the above formula (3), for example.

Claims

1. The BET specific surface area B1 (m 2 / g), and the BET specific surface area B2 (m 2 / g), the ratio of the mass of the first filler to the sum of the mass of the first filler and the mass of the second filler is r1 (mass%), and the ratio of the mass of the second filler to the sum of the mass of the first filler and the mass of the second filler is r2 (mass%), then the converted specific surface area B0 (m 2 / g) is 5.00 (m 2 The method includes a determining step of determining a ratio r1 (mass%) of the first filler and a ratio r2 (mass%) of the second filler to be mixed into the asphalt composition so that the ratio r1 (mass%) of the first filler and the ratio r2 (mass%) of the second filler are equal to or less than 1 / g. A method for designing a mixture of asphalt for paving, characterized by the above. [Equation 6]

2. The BET specific surface area B1 (m 2 / g), and the BET specific surface area B2 (m 2 / g), the ratio of the mass of the first filler to the sum of the mass of the first filler and the mass of the second filler is r1 (mass%), and the ratio of the mass of the second filler to the sum of the mass of the first filler and the mass of the second filler is r2 (mass%), then the converted specific surface area B0 (m 2 / g) is 5.00 (m 2 a determining step of determining a ratio r1 (mass%) of the first filler and a ratio r2 (mass%) of the second filler to be mixed into the asphalt composition so that the ratio r1 (mass%) of the first filler and the ratio r2 (mass%) of the second filler are equal to or less than r1 / g; a mixing step of mixing the first filler at the ratio r1 (mass%) and the second filler at the ratio r2 (mass%) into an asphalt composition. A method for producing an asphalt mixture for paving, characterized by: [Equation 7]

3. In the mixing step, aggregate is further mixed with the asphalt composition.

3. The method for producing an asphalt mixture for paving according to claim 2, wherein

4. An asphalt composition comprising: When the BET specific surface area of ​​a first filler made of synthetic calcium carbonate powder is B1 (m 2 / g), the BET specific surface area of ​​a second filler made of calcium carbonate powder produced by a different process from that of the synthetic calcium carbonate powder is B2 (m 2 / g), the ratio of the mass of the first filler to the sum of the mass of the first filler and the mass of the second filler is r1 (mass %), and the ratio of the mass of the second filler to the sum of the mass of the first filler and the mass of the second filler is r2 (mass %), The converted specific surface area B0 (m 2 / g) calculated by the following formula (1) based on the ratio r1 (mass%) of the first filler and the ratio r2 (mass%) of the second filler mixed into the asphalt composition satisfies 5.00 (m 2 / g) or less. An asphalt mixture for paving characterized by: [Equation 8]

5. Further containing aggregate.

5. The asphalt mixture for paving according to claim 4, wherein

Images