CN105621955A - Room-temperature bituminous concrete and preparation method thereof - Google Patents
Room-temperature bituminous concrete and preparation method thereof Download PDFInfo
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- CN105621955A CN105621955A CN201510969934.0A CN201510969934A CN105621955A CN 105621955 A CN105621955 A CN 105621955A CN 201510969934 A CN201510969934 A CN 201510969934A CN 105621955 A CN105621955 A CN 105621955A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
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Abstract
The invention belongs to the technical field of water conservancy and hydropower engineering, and particularly relates to room-temperature bituminous concrete and a preparation method thereof. The room-temperature bituminous concrete is prepared from the following raw materials: in percentage by weight, 8%-13% of aggregate with the particle diameter larger than 9.5mm and smaller than or equal to 16mm, 16%-21% of aggregate with the particle diameter larger than 4.75mm and smaller than or equal to 9.5mm, 25%-26% of aggregate with the particle diameter larger than 2.36mm and smaller than or equal to 4.75mm, 38%-40% of aggregate with the particle diameter larger than 0.075mm and smaller than or equal to 2.36mm and 6.0% of aggregate with the particle diameter smaller than or equal to 0.075mm; the ratio of the bitumen to aggregate is 6.5%-7.0% and represents the ratio of the weight of the room-temperature bitumen to the total weight of the aggregate and padding. The room-temperature bituminous concrete provided by the invention solves the problems that conventional room-temperature bituminous concrete cannot be applied to an anti-seepage structure of the water conservancy and hydropower engineering due to high porosity and poor anti-seepage performance.
Description
Technical field
The invention belongs to Hydraulic and Hydro-Power Engineering technical field, particularly to a kind of room-temperature asphalt concrete and preparation method thereof.
Background technology
Bituminous concrete is used as the existing history for many years of leakage preventing structure of Hydraulic and Hydro-Power Engineering, more common is compaction type bituminous concrete at present, but compaction type bituminous concrete is a kind of heated bitumen concrete, asphalt heating temperature is generally 150��170 DEG C, aggregate heating-up temperature is generally 170��200 DEG C, therefore, producing and work progress to consume mass energy.
Adopt asphalt liquefier and Colophonium to mix and stir and can produce room-temperature asphalt, for instance Chinese patent 201010189089.2 discloses a kind of blending type room-temperature asphalt liquefier, and this liquefier can produce room-temperature asphalt. Utilize room-temperature asphalt to produce bituminous concrete and have that fume emission is few, the feature such as easy construction, energy-conserving and environment-protective, efficiency of construction are high, reduction of erection time and reduction cost, current room temperature bituminous concrete obtains application in the road engineerings such as Paving of Asphalt Concrete Road Surface, but there is the problems such as porosity is big, barrier properties is poor in ordinary room temperature bituminous concrete, it is impossible to meets the requirement for Hydraulic and Hydro-Power Engineering leakage preventing structure.
Summary of the invention
The problem such as big for above-mentioned room-temperature asphalt concrete pore rate, barrier properties is poor, the invention provides a kind of room-temperature asphalt concrete that can be used for Hydraulic and Hydro-Power Engineering leakage preventing structure and preparation method thereof.
First technical problem to be solved by this invention is to provide a kind of room-temperature asphalt concrete. This room-temperature asphalt concrete is prepared from by the raw material of following percentage by weight: the 16mm >=aggregate 8��13% of particle diameter > 9.5mm, the 9.5mm >=aggregate 16��21% of particle diameter > 4.75mm, the 4.75mm >=aggregate 25��26% of particle diameter > 2.36mm, the 2.36mm >=aggregate 38��40% of particle diameter > 0.075mm, particle diameter��0.075mm filler be 6.0%; Bitumen aggregate ratio is 6.5��7.0%, and described bitumen aggregate ratio represents the ratio of room-temperature asphalt weight and aforementioned aggregate and filler gross weight; Described aggregate is at least one in granite, limestone or dolomite; Described filler is made up of cement and breeze; Described breeze is at least one in granite powder, ash rock dust or dolomite rock powder.
Preferably, above-mentioned room-temperature asphalt concrete is prepared from by the raw material of following percentage by weight: the 16mm >=aggregate 8% of particle diameter > 9.5mm, the 9.5mm >=aggregate 20% of particle diameter > 4.75mm, the 4.75mm >=aggregate 26% of particle diameter > 2.36mm, the 2.36mm >=aggregate 40% of particle diameter > 0.075mm, particle diameter��0.075mm filler be 6.0%; Bitumen aggregate ratio is 6.7%; Described aggregate, breeze are granite.
Preferably, above-mentioned room-temperature asphalt concrete is prepared from by the raw material of following percentage by weight: the 16mm >=aggregate 10% of particle diameter > 9.5mm, the 9.5mm >=aggregate 21% of particle diameter > 4.75mm, the 4.75mm >=aggregate 25% of particle diameter > 2.36mm, the 2.36mm >=aggregate 38% of particle diameter > 0.075mm, particle diameter��0.075mm filler be 6.0%; Bitumen aggregate ratio is 6.7%; Described aggregate, breeze are granite.
Preferably, above-mentioned room-temperature asphalt concrete is prepared from by the raw material of following percentage by weight: the 16mm >=aggregate 13% of particle diameter > 9.5mm, the 9.5mm >=aggregate 16% of particle diameter > 4.75mm, the 4.75mm >=aggregate 25% of particle diameter > 2.36mm, the 2.36mm >=aggregate 40% of particle diameter > 0.075mm, particle diameter��0.075mm filler be 6.0%; Bitumen aggregate ratio is 6.6%; Described aggregate, breeze are limestone.
Preferably, above-mentioned room-temperature asphalt concrete is prepared from by the raw material of following percentage by weight: the 16mm >=aggregate 12% of particle diameter > 9.5mm, the 9.5mm >=aggregate 17% of particle diameter > 4.75mm, the 4.75mm >=aggregate 25% of particle diameter > 2.36mm, the 2.36mm >=aggregate 40% of particle diameter > 0.075mm, particle diameter��0.075mm filler be 6.0%; Bitumen aggregate ratio is 6.6%; Described aggregate, breeze are limestone.
Preferably, above-mentioned room-temperature asphalt concrete is prepared from by the raw material of following percentage by weight: the 16mm >=aggregate 8% of particle diameter > 9.5mm, the 9.5mm >=aggregate 20% of particle diameter > 4.75mm, the 4.75mm >=aggregate 26% of particle diameter > 2.36mm, the 2.36mm >=aggregate 40% of particle diameter > 0.075mm, particle diameter��0.075mm filler be 6.0%; Bitumen aggregate ratio is 6.7%; Described aggregate, breeze are dolomite.
Preferably, above-mentioned room-temperature asphalt concrete is prepared from by the raw material of following percentage by weight: the 16mm >=aggregate 10% of particle diameter > 9.5mm, the 9.5mm >=aggregate 21% of particle diameter > 4.75mm, the 4.75mm >=aggregate 25% of particle diameter > 2.36mm, the 2.36mm >=aggregate 38% of particle diameter > 0.075mm, particle diameter��0.075mm filler be 6.0%; Bitumen aggregate ratio is 6.7%; Described aggregate, breeze are dolomite.
Preferably, in above-mentioned room-temperature asphalt concrete, described filler by etc. the cement of weight and breeze form.
Second technical problem to be solved by this invention is to provide the concrete preparation method of above-mentioned room-temperature asphalt. The method comprises the following steps: aggregate pours stirring container post-heating into being not less than 150 DEG C and stirring, and mixes after being subsequently adding room-temperature asphalt, mixes after adding filler, then gets rid of moisture.
The present invention selects and optimizes granularity and the adding proportion of the concrete each raw material of room-temperature asphalt, only need aggregate is heated, can be mixed with room-temperature asphalt in relatively low temperature and form, and the room-temperature asphalt concrete prepared has the advantages such as mechanical strength height, adaptive deformation ability is strong, anti-permeability performance is good, it is possible to perform well in the leakage preventing structure of Hydraulic and Hydro-Power Engineering.
Accompanying drawing explanation
Fig. 1 mono-stage grating ratio and porosity relation
Fig. 2 two-stage grating ratio and porosity relation
Fig. 3 tri-stage grating ratio and porosity relation
Fig. 4 tetra-stage grating ratio and porosity relation
Detailed description of the invention
A kind of room-temperature asphalt concrete, being prepared from by the raw material of following percentage by weight: the aggregate 38��40% of the 16mm >=aggregate 8��13% of particle diameter > 9.5mm, the 9.5mm >=aggregate 16��21% of particle diameter > 4.75mm, the 4.75mm >=aggregate 25��26% of particle diameter > 2.36mm, 2.36mm >=particle diameter > 0.075mm, the filler of particle diameter��0.075 is 6.0%; Bitumen aggregate ratio is 6.5��7.0%, and described bitumen aggregate ratio represents the ratio of Colophonium weight and aforementioned aggregate and filler gross weight; Described aggregate is at least one in granite, limestone or dolomite; Described filler is made up of cement and breeze; Described breeze is at least one in granite powder, ash rock dust or dolomite rock powder.
Preferably, above-mentioned room-temperature asphalt concrete is prepared from by the raw material of following percentage by weight: the 16mm >=aggregate 8% of particle diameter > 9.5mm, the 9.5mm >=aggregate 20% of particle diameter > 4.75mm, the 4.75mm >=aggregate 26% of particle diameter > 2.36mm, the 2.36mm >=aggregate 40% of particle diameter > 0.075mm, particle diameter��0.075mm filler be 6.0%; Bitumen aggregate ratio is 6.7%; Described aggregate, breeze are granite.
Preferably, above-mentioned room-temperature asphalt concrete is prepared from by the raw material of following percentage by weight: the 16mm >=aggregate 10% of particle diameter > 9.5mm, the 9.5mm >=aggregate 21% of particle diameter > 4.75mm, the 4.75mm >=aggregate 25% of particle diameter > 2.36mm, the 2.36mm >=aggregate 38% of particle diameter > 0.075mm, particle diameter��0.075mm filler be 6.0%; Bitumen aggregate ratio is 6.7%; Described aggregate, breeze are granite.
Preferably, above-mentioned room-temperature asphalt concrete is prepared from by the raw material of following percentage by weight: the 16mm >=aggregate 13% of particle diameter > 9.5mm, the 9.5mm >=aggregate 16% of particle diameter > 4.75mm, the 4.75mm >=aggregate 25% of particle diameter > 2.36mm, the 2.36mm >=aggregate 40% of particle diameter > 0.075mm, particle diameter��0.075mm filler be 6.0%; Bitumen aggregate ratio is 6.6%; Described aggregate, breeze are limestone.
Preferably, above-mentioned room-temperature asphalt concrete is prepared from by the raw material of following percentage by weight: the 16mm >=aggregate 12% of particle diameter > 9.5mm, the 9.5mm >=aggregate 17% of particle diameter > 4.75mm, the 4.75mm >=aggregate 25% of particle diameter > 2.36mm, the 2.36mm >=aggregate 40% of particle diameter > 0.075mm, particle diameter��0.075mm filler be 6.0%; Bitumen aggregate ratio is 6.6%; Described aggregate, breeze are limestone.
Preferably, above-mentioned room-temperature asphalt concrete is prepared from by the raw material of following percentage by weight: the 16mm >=aggregate 8% of particle diameter > 9.5mm, the 9.5mm >=aggregate 20% of particle diameter > 4.75mm, the 4.75mm >=aggregate 26% of particle diameter > 2.36mm, the 2.36mm >=aggregate 40% of particle diameter > 0.075mm, particle diameter��0.075mm filler be 6.0%; Bitumen aggregate ratio is 6.7%; Described aggregate, breeze are dolomite.
Preferably, above-mentioned room-temperature asphalt concrete is prepared from by the raw material of following percentage by weight: the 16mm >=aggregate 10% of particle diameter > 9.5mm, the 9.5mm >=aggregate 21% of particle diameter > 4.75mm, the 4.75mm >=aggregate 25% of particle diameter > 2.36mm, the 2.36mm >=aggregate 38% of particle diameter > 0.075mm, particle diameter��0.075mm filler be 6.0%; Bitumen aggregate ratio is 6.7%; Described aggregate, breeze are dolomite.
Preferably, in above-mentioned room-temperature asphalt concrete, described filler by etc. the cement of weight and breeze form.
Simultaneously, present invention also offers the above-mentioned concrete preparation method of water conservancy project room-temperature asphalt, comprise the following steps: aggregate pours stirring container post-heating into being not less than 150 DEG C and stirring, and mixes after being subsequently adding room-temperature asphalt, mix after adding filler, then get rid of moisture.
Test example 1 room-temperature asphalt concrete material match ratio
(1) aggregate is carried out hierarchical composition stamped density test, it is determined that aggregate near optimal grating. Stamped density is tested with aggregate porosity for evaluation index, the relation between particle size content each in aggregate and aggregate porosity is analyzed, with closestpacking principle, determines the grading limit of aggregate. Stamped density test can carry out in four stages, and first two kinds of particle diameter aggregates are tested by a stage, and the two-stage adds the aggregate of a kind of particle diameter again on a stage basis, the like. In process of the test, each particle diameter section aggregate ratio adopts the fully intermeshing compound mode of tabular ratio. One stage aggregate size d (mm) is 16 >=d > 13.2 and 13.2 >=d > 9.5mm, and design proportion is in Table 1, and stamped density result of the test is shown in Fig. 1.
Table 1 one stage aggregate size design proportion
As shown in Figure 1,16 >=d > 13.2 and 13.2 >=d > 9.5 particle diameter section aggregate ratio from 70 30 be changed to 40 60 time, porosity presents downward trend, when being changed to 30 70, then porosity increases suddenly, and porosity is significantly greater than above 4 kinds of compound modes. Hence, it can be determined that 16 >=d > 13.2 and 13.2 >=d > 9.5 particle diameter section aggregate ratio are 40 60, carry out two-stage stamped density test on this basis. Two-stage aggregate size is 16 >=d > 9.5 and 9.5 >=d > 4.75, and design proportion is in Table 2, and stamped density result of the test is shown in Fig. 2.
Table 2 two-stage aggregate size design proportion
As shown in Figure 2,16 >=d > 9.5 and 9.5 >=d > 4.75 particle diameter section aggregate ratio from 70 30 be changed to 50 50 time, porosity presents downward trend, when being changed to after 50 50, porosity is gradually increased, and the porosity of 50 50 is significantly less than 4 kinds, front and back compound mode. Hence, it can be determined that 16 >=d > 9.5 and 9.5 >=d > 4.75 particle diameter section aggregate ratio are 50 50, carry out three rank stamped density tests on this basis. Three stage aggregate sizes are 16 >=d > 4.75 and 4.75 >=d > 2.36, and design proportion is in Table 3, and stamped density result of the test is shown in Fig. 3.
Table 3 three stage aggregate size design proportion
From the figure 3, it may be seen that 16 >=d > 4.75mm and 4.75 >=d > 2.36 particle diameter section aggregate ratio from 70 30 be changed to 40 60 time, porosity presents downward trend, and when being changed to 30 70, porosity increases to some extent. Hence, it can be determined that 16 >=d > 4.75 and 4.75 >=d > 2.36m particle diameter section aggregate ratio are 40 60, carry out quadravalence stamped density test on this basis. Four stage aggregate sizes are 16 >=d > 2.36 and 2.36 >=d > 0.075, and design proportion is in Table 4, and stamped density result of the test is shown in Fig. 4.
Table 4 four stage aggregate size design proportion
As shown in Figure 4,16 >=d > 2.36 and 2.36 >=d > 0.075 particle diameter section aggregate ratio from 70 30 be changed to 30 70 time, there is valley when 60 40 in porosity. Hence, it can be determined that 16 >=d > 2.36 and 2.36 >=d > 0.075 particle diameter section aggregate ratio are 60 40.
Test according to four stage stamped densities, it may be determined that aggregate near optimal grating, in Table 5.
Table 5 aggregate near optimal grating
| Synthesis aggregate | 16 >=d > 13.2 | 13.2 >=d > 9.5 | 9.5 >=d > 4.75 | 4.75 >=d > 2.36 | 2.36 >=d > 0.075 |
| Grating (%) | 5 | 7 | 12 | 36 | 40 |
(2) further according to table 5 aggregate near optimal match ratio, the water conservancy project room-temperature asphalt concrete orthogonal test of different aggregate ratio, bitumen aggregate ratio, contents of ground slag and cement content is carried out, it is determined that optimum mix. to particle diameter d (mm) scope aggregate content at 16 >=d > 9.5, the aggregate content of 9.5 >=d > 4.75, the aggregate content of 4.75 >=d > 2.36, the aggregate content of 2.36 >=d > 0.075, bitumen aggregate ratio, contents of ground slag and seven factors of cement content carry out orthogonal test, the evaluation criterion of orthogonal test is the concrete Marshall stability of water conservancy project room-temperature asphalt and porosity, finally show that proportioning raw materials of the present invention ranges for: the aggregate 8��13% of 16mm >=particle diameter > 9.5mm, the aggregate 16��21% of 9.5mm >=particle diameter > 4.75mm, the aggregate 25��26% of 4.75mm >=particle diameter > 2.36mm, the aggregate 38��40% of 2.36mm >=particle diameter > 0.075mm, the filler of particle diameter��0.075mm is 6.0%, bitumen aggregate ratio is 6.5��7.0%, and described bitumen aggregate ratio represents the ratio of room-temperature asphalt weight and aforementioned aggregate and filler gross weight. preferred room-temperature asphalt concrete material match ratio is in Table 6.
Table 6 room-temperature asphalt concrete mix
Embodiment 1
Aggregate and breeze all adopt granite to make, mineral aggregate mass percent is: particle diameter d (mm) scope the aggregate of 16 >=d > 9.5 be 8%, the aggregate of 9.5 >=d > 4.75 be 20%, the aggregate of 4.75 >=d > 2.36 be 26%, the aggregate of 2.36 >=d > 0.075 be 40%, the cement of d��0.075 and granite mineral powder filling materials, respectively account for 3.0%; Bitumen aggregate ratio is 6.7%. The aggregate screened is poured into stirring container heating to 150 DEG C and stir, pour the room-temperature asphalt adopting blending type room-temperature asphalt liquefier to produce into stirring container and stir, the filler that cement and granite breeze form is poured into stirring container and stirred, continue asphalt mixture heating, until the moisture in discharge room-temperature asphalt, thus prepare the room-temperature asphalt concrete of the present invention.
Embodiment 2
Aggregate and breeze all adopt limestone to make, mineral aggregate mass percent is: particle diameter d (mm) scope the aggregate of 16 >=d > 9.5 be 13%, the aggregate of 9.5 >=d > 4.75 be 16%, the aggregate of 4.75 >=d > 2.36 be 25%, the aggregate of 2.36 >=d > 0.075 be 40%, the cement of d��0.075 and limestone mineral powder filling materials, respectively account for 3.0%; Bitumen aggregate ratio is 6.6%. The aggregate screened is poured into stirring container heating to 150 DEG C and stir, pour the room-temperature asphalt adopting blending type room-temperature asphalt liquefier to produce into stirring container and stir, the filler that cement and limestone breeze form is poured into stirring container and stirred, continue asphalt mixture heating, until the moisture in discharge room-temperature asphalt, thus prepare the room-temperature asphalt concrete of the present invention.
Embodiment 3
Aggregate and breeze all adopt limestone to make, mineral aggregate mass percent is: particle diameter d (mm) scope the aggregate of 16 >=d > 9.5 be 12%, the aggregate of 9.5 >=d > 4.75 be 17%, the aggregate of 4.75 >=d > 2.36 be 25%, the aggregate of 2.36 >=d > 0.075 be 40%, the cement of d��0.075 and limestone mineral powder filling materials, respectively account for 3.0%; Bitumen aggregate ratio is 6.6%. The aggregate screened is poured into stirring container heating to 150 DEG C and stir, pour the room-temperature asphalt adopting blending type room-temperature asphalt liquefier to produce into stirring container and stir, the filler that cement and limestone breeze form is poured into stirring container and stirred, continue asphalt mixture heating, until the moisture in discharge room-temperature asphalt, thus prepare the room-temperature asphalt concrete of the present invention.
Embodiment 4
Aggregate and breeze all adopt dolomite to make, mineral aggregate mass percent is: particle diameter d (mm) scope the aggregate of 16 >=d > 9.5 be 10%, the aggregate of 9.5 >=d > 4.75 be 21%, the aggregate of 4.75 >=d > 2.36 be 25%, the aggregate of 2.36 >=d > 0.075 be 38%, the cement of d��0.075 and dolomite mineral powder filling materials, respectively account for 3.0%; Bitumen aggregate ratio is 6.7%. The aggregate screened is poured into stirring container heating to 150 DEG C and stir, pour the room-temperature asphalt adopting blending type room-temperature asphalt liquefier to produce into stirring container and stir, the filler that cement and dolomite breeze form is poured into stirring container and stirred, continue asphalt mixture heating, until the moisture in discharge room-temperature asphalt, thus prepare the room-temperature asphalt concrete of the present invention.
It is carried out key property test according to " Bituminous concrete facing of earth-rock dam and core-wall design specification " (DL/T5411-2009) by the water conservancy project room-temperature asphalt concrete present invention prepared, mainly include herein below: permeability, tensile property, compressive property, water stabilizing and bending property etc., testing result is in Table 7.
Table 7 water conservancy project room-temperature asphalt concrete key property index
The conventional compaction type bituminous concrete key property that the water conservancy project room-temperature asphalt concrete built rockfill dam with asphalt concrete core impervious core domestic with part that the present invention prepares adopts compares in Table 8.
Table 8 water conservancy project room-temperature asphalt concrete built engineering bituminous concrete key property domestic with part compares
As can be seen from Table 7, the room-temperature asphalt concrete key property that the present invention prepares meets the technology requirement of " Bituminous concrete facing of earth-rock dam and core-wall design specification " (DL/T5411-2009). As can be seen from Table 8, the room-temperature asphalt concrete that the present invention prepares is similar to the key property of the compaction type bituminous concrete that Some Domestic built rockfill dam with asphalt concrete core impervious core adopts, thus proving that the room-temperature asphalt concrete that the present invention prepares may be used for the leakage preventing structure of Hydraulic and Hydro-Power Engineering further.
Claims (9)
1. a room-temperature asphalt concrete, it is characterized in that: be prepared from by the raw material of following percentage by weight: the aggregate 38��40% of the 16mm >=aggregate 8��13% of particle diameter > 9.5mm, the 9.5mm >=aggregate 16��21% of particle diameter > 4.75mm, the 4.75mm >=aggregate 25��26% of particle diameter > 2.36mm, 2.36mm >=particle diameter > 0.075mm, the filler of particle diameter��0.075mm is 6.0%; Bitumen aggregate ratio is 6.5��7.0%, and described bitumen aggregate ratio represents the ratio of room-temperature asphalt weight and aforementioned aggregate and filler gross weight; Described aggregate is at least one in granite, limestone or dolomite; Described filler is made up of cement and breeze; Described breeze is at least one in granite powder, ash rock dust or dolomite rock powder.
2. room-temperature asphalt concrete according to claim 1, it is characterised in that: be prepared from by the raw material of following percentage by weight: the 16mm >=aggregate 8% of particle diameter > 9.5mm, the 9.5mm >=aggregate 20% of particle diameter > 4.75mm, the 4.75mm >=aggregate 26% of particle diameter > 2.36mm, the 2.36mm >=aggregate 40% of particle diameter > 0.075mm, particle diameter��0.075mm filler be 6.0%; Bitumen aggregate ratio is 6.7%; Described aggregate, breeze are granite.
3. room-temperature asphalt concrete according to claim 1, it is characterised in that: be prepared from by the raw material of following percentage by weight: the 16mm >=aggregate 10% of particle diameter > 9.5mm, the 9.5mm >=aggregate 21% of particle diameter > 4.75mm, the 4.75mm >=aggregate 25% of particle diameter > 2.36mm, the 2.36mm >=aggregate 38% of particle diameter > 0.075mm, particle diameter��0.075mm filler be 6.0%; Bitumen aggregate ratio is 6.7%; Described aggregate, breeze are granite.
4. room-temperature asphalt concrete according to claim 1, it is characterised in that: be prepared from by the raw material of following percentage by weight: the 16mm >=aggregate 13% of particle diameter > 9.5mm, the 9.5mm >=aggregate 16% of particle diameter > 4.75mm, the 4.75mm >=aggregate 25% of particle diameter > 2.36mm, the 2.36mm >=aggregate 40% of particle diameter > 0.075mm, particle diameter��0.075mm filler be 6.0%; Bitumen aggregate ratio is 6.6%; Described aggregate, breeze are limestone.
5. room-temperature asphalt concrete according to claim 1, it is characterised in that: be prepared from by the raw material of following percentage by weight: the 16mm >=aggregate 12% of particle diameter > 9.5mm, the 9.5mm >=aggregate 17% of particle diameter > 4.75mm, the 4.75mm >=aggregate 25% of particle diameter > 2.36mm, the 2.36mm >=aggregate 40% of particle diameter > 0.075mm, particle diameter��0.075mm filler be 6.0%; Bitumen aggregate ratio is 6.6%; Described aggregate, breeze are limestone.
6. room-temperature asphalt concrete according to claim 1, it is characterised in that: be prepared from by the raw material of following percentage by weight: the 16mm >=aggregate 8% of particle diameter > 9.5mm, the 9.5mm >=aggregate 20% of particle diameter > 4.75mm, the 4.75mm >=aggregate 26% of particle diameter > 2.36mm, the 2.36mm >=aggregate 40% of particle diameter > 0.075mm, particle diameter��0.075mm filler be 6.0%; Bitumen aggregate ratio is 6.7%; Described aggregate, breeze are dolomite.
7. room-temperature asphalt concrete according to claim 1, it is characterised in that: be prepared from by the raw material of following percentage by weight: the 16mm >=aggregate 10% of particle diameter > 9.5mm, the 9.5mm >=aggregate 21% of particle diameter > 4.75mm, the 4.75mm >=aggregate 25% of particle diameter > 2.36mm, the 2.36mm >=aggregate 38% of particle diameter > 0.075mm, particle diameter��0.075mm filler be 6.0%; Bitumen aggregate ratio is 6.7%; Described aggregate, breeze are dolomite.
8. the room-temperature asphalt concrete according to any one of claim 1��7, it is characterised in that: described filler by etc. the cement of weight and breeze form.
9. the concrete preparation method of room-temperature asphalt described in any one of claim 1��8, it is characterized in that: comprise the following steps: aggregate pours stirring container post-heating into being not less than 150 DEG C and stirring, mix after being subsequently adding room-temperature asphalt, mix after adding filler, then get rid of moisture.
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| CN113372047A (en) * | 2021-07-02 | 2021-09-10 | 华中科技大学 | Cementing material of dolomite composite emulsified asphalt and preparation method thereof |
| CN114105571A (en) * | 2021-12-23 | 2022-03-01 | 上海建工建材科技集团股份有限公司 | Machine-made sand self-compacting rock-fill concrete material and preparation method thereof |
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