CN106012745A - Asphalt mixture used for skid pads, and skid pad asphalt concentrate pavement - Google Patents
Asphalt mixture used for skid pads, and skid pad asphalt concentrate pavement Download PDFInfo
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- CN106012745A CN106012745A CN201610632491.0A CN201610632491A CN106012745A CN 106012745 A CN106012745 A CN 106012745A CN 201610632491 A CN201610632491 A CN 201610632491A CN 106012745 A CN106012745 A CN 106012745A
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- asphalt
- square hole
- skid pad
- rubble
- hole screen
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/32—Coherent pavings made in situ made of road-metal and binders of courses of different kind made in situ
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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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/021—Agglomerated materials, e.g. artificial aggregates agglomerated by a mineral binder, e.g. cement
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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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/0076—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials characterised by the grain distribution
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Road Paving Structures (AREA)
Abstract
The invention provides an asphalt mixture used for skid pads. The asphalt mixture comprises 50-74wt% of broken stones, 14-42wt% of sands and 8-12wt% of mineral powder. The invention also provides a skid pad asphalt concentrate pavement. A bottom layer, a base layer, a middle layer and a surface layer are sequentially paved on foundation, the bottom layer is AC-20(H) asphalt concrete with the thickness of 5-7cm, the base layer is AC-16(H) asphalt concrete with the thickness of 3-5cm, the middle layer is AC-13(H) asphalt concrete with the thickness of 3-5cm, and the surface layer is AC-13(H) asphalt concrete with the thickness of 3-5cm; and asphalt concrete is prepared through uniformly mixing asphalt with the asphalt mixture used for skid pads, the asphalt-aggregate ratio of the AC-13(H) asphalt concrete is 5.6-6.2%, the asphalt-aggregate ratio of the AC-16(H) asphalt concrete is 5.5-5.9%, and the asphalt-aggregate ratio of the AC-20(H) asphalt concrete is 5.4-5.8%. The concrete pavement can comprehensively meet use requirements of high speed circuits, curves and steel slop surfaces in the skid pads.
Description
Technical field
The present invention relates to pavement construction technical field, specifically can be used for laying the asphalt of test run field road surface, and use what this asphalt laid to meet the asphalt concrete pavement that test run field road surface requires.
Background technology
Skid pad high speed circuit horizontal curve is Mike's Kang Naer curve, transverse section Curve is designed as cubic parabola, curved design inclination maximum is 47.08 degree, the most maximum discrepancy in elevation is up to 7.6 meters, it is divided into low speed carriage way, middle Fast Moving Vehicle Lane and speed way, wherein speed way desin speed 180km/h from down to up.This project difficulty of construction is big, complex procedures.The vehicle of skid pad drives to high speed circuit corner and does not the most take brake measure, passes through bend at a relatively high speed.Turning speed is the fastest, and angular velocity is the biggest, and centrifugal force is the biggest.So in order to offset centrifugal force, frictional force and wheel side-friction force between vehicle and bituminous paving will increase；And owing to Vehicle Speed is very fast, higher to the flatness requirement on wheel contact road surface.From the point of view of in terms of construction, due to the impact of Blaps femaralis, the vertical consolidation effect of traction road roller road pavement is poor, and the shear behavior of bituminous paving will be impacted by this.
Scientific research institutions' road pavement structure focuses primarily upon highway with the research of material the most both at home and abroad, generally highway has higher linear design standard, it is generally not present the bend problem of bigger superelevation, research to bend bituminous paving focuses primarily upon the aspect such as construction technology, safety, considerably less with the research of structure to skid pad high speed circuit bend sty asphalt pavement material.Therefore, invention is the most necessary for the compact type asphalt mixture of skid pad high speed circuit bend sty.
Summary of the invention
The purpose of the present invention is to propose to a kind of skid pad asphalt, the bituminous concrete prepared by it its can be maintained at the stability on inclined-plane, prevent from flowing downward, can have higher construction workability, density, water stability and shear behavior on the premise of ensureing high-temperature stability again；Proposing again a kind of skid pad asphalt concrete pavement, it disclosure satisfy that high speed circuit in skid pad, bend and the use requirement of sty, can be as various road surface, skid pad.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of skid pad asphalt, it is characterised in that include each component of following weight content: rubble 50～74%, sand material 14～42% and breeze 8～12%.
Described rubble is a kind of material in basalt, diabase, limestone and granite or the mixture of any 2 to 3 kinds or the mixture of four kinds, and rubble is all by 26.5mm square hole screen；Sand material is the mixing of river sand and Machine-made Sand, and sand material is all by 1.18mm square hole screen；Described breeze is the one in agstone, slaked lime and cement or the mixture of any two kinds or the mixture of three kinds, and breeze is all by 0.075mm square hole screen.
Its mineral aggregate gradation scope is: when the screen size of square hole screen is respectively 26.5mm, 19mm, 16mm, 13.2mm, 9.5mm, 4.75mm, 2.36mm, 1.18mm, 0.6mm, 0.3mm, 0.15mm, 0.075mm, and the percent of pass of corresponding each square hole screen is followed successively by 100%, 95 ~ 100%, 91 ~ 100%, 86 ~ 100%, 75 ~ 92%, 55 ~ 80%, 40 ~ 65%, 26 ~ 50%, 18 ~ 34%, 13 ~ 23%, 10 ~ 16%, 8 ~ 12%.
A kind of AC-13(H is proposed on the basis of such scheme) asphalt, it includes each component of following weight content: rubble 50～70%, sand material 18～42% and breeze 8～12%, rubble is all by 16mm square hole screen；Its mineral aggregate gradation scope is: when the screen size of square hole screen is respectively 16mm, 13.2mm, 9.5mm, 4.75mm, 2.36mm, 1.18mm, 0.6mm, 0.3mm, 0.15mm, 0.075mm, and the percent of pass of corresponding each square hole screen is followed successively by 100%, 95 ~ 100%, 78 ~ 92%, 62 ~ 80%, 45 ~ 65%, 30 ~ 50%, 20 ~ 34%, 15 ~ 23%, 10 ~ 16%, 8 ~ 12%.
A kind of AC-16(H is proposed again) asphalt, it includes each component of following weight content: rubble 52～74%, sand material 14～40% and breeze 8～12%, rubble is all by 19mm square hole screen；Its mineral aggregate gradation scope is: when the screen size of square hole screen is respectively 19mm, 16mm, 13.2mm, 9.5mm, 4.75mm, 2.36mm, 1.18mm, 0.6mm, 0.3mm, 0.15mm, 0.075mm, and the percent of pass of corresponding each square hole screen is followed successively by 100%, 95 ~ 100%, 90 ~ 96%, 76 ~ 88%, 58 ~ 75%, 40 ~ 62%, 26 ~ 48%, 18 ~ 32%, 14 ~ 22%, 10 ~ 16%, 8 ~ 12%.
Reintroduce a kind of AC-20(H) asphalt, it includes each component of following weight content: rubble 54～74%, sand material 14～38% and breeze 8～12%, rubble is all by 26.5mm square hole screen；Its mineral aggregate gradation scope is: when the screen size of square hole screen is respectively 26.5mm, 19mm, 16mm, 13.2mm, 9.5mm, 4.75mm, 2.36mm, 1.18mm, 0.6mm, 0.3mm, 0.15mm, 0.075mm, and the percent of pass of corresponding each square hole screen is followed successively by 100%, 95 ~ 100%, 91 ~ 98%, 86 ~ 95%, 75 ~ 87%, 55 ~ 75%, 40 ~ 60%, 26 ~ 46%, 18 ~ 30%, 13 ~ 21%, 10 ~ 16%, 8 ~ 12%.
Prioritization scheme is: described sand material is the mixture of river sand and Machine-made Sand, and river sand is 1 ~ 1.5:1 with the weight ratio of Machine-made Sand.
The present invention also proposes a kind of skid pad asphalt concrete pavement, it is covered with bottom, basic unit, intermediate layer and top layer successively by prior art on ground, bottom is the AC-20(H that 5 ~ 7cm is thick) bituminous concrete is paved into, basic unit is the AC-16(H that 3 ~ 5cm is thick) bituminous concrete is paved into, intermediate layer is the AC-13(H that 3 ~ 5cm is thick) bituminous concrete is paved into, top layer is the AC-13(H that 3 ~ 5cm is thick) bituminous concrete is paved into.
Described AC-13(H) bituminous concrete is by Colophonium and above-mentioned AC-13(H) asphalt is mixed, its bitumen aggregate ratio is 5.6 ~ 6.2%.
Described AC-16(H) bituminous concrete is by Colophonium and above-mentioned AC-16(H) asphalt is mixed, its bitumen aggregate ratio is 5.5 ~ 5.9%.
Described AC-20(H) bituminous concrete is by Colophonium and above-mentioned AC-20(H) asphalt is mixed, its bitumen aggregate ratio is 5.4 ~ 5.8%.
Prioritization scheme further, the requirement of described penetration of bitumens is: under the conditions of temperature 25 DEG C, loading 100g, injection time 5s, it is 60 ~ 70(0.1mm that standard pin vertically penetrates the degree of depth of bitumen samples).
The present invention has substantive distinguishing features highlighted below with the most progressive:
1, the skid pad asphalt of the present invention have employed more fluvial sand and breeze, make the bituminous concrete formed can keep its stability on inclined-plane, prevent from flowing downward, it is easy to again the vertical compacting drawing road roller to bend sty, so that curved road surface surface pellet is arranged uniformly, the loosest, do not isolate, flatness and compactness can be effectively ensured.
2, the use requirement of high speed circuit, bend and sty in the skid pad asphalt concrete pavement of the present invention can effectively meet skid pad, provides safe and reliable test site for carrying out the vehicle of properties test.
Accompanying drawing explanation
Fig. 1 is the gradation curve of mineral aggregate figure of the skid pad asphalt of embodiment 1.
Fig. 2 is the gradation curve of mineral aggregate figure of the skid pad asphalt of embodiment 2.
Fig. 3 is the gradation curve of mineral aggregate figure of the skid pad asphalt of embodiment 3.
Fig. 4 is the structural representation of the skid pad asphalt concrete pavement of the present invention.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.
Embodiment 1
A kind of skid pad asphalt, it includes each component of following weight content: rubble 60.7%, sand material 28.7% and breeze 10.6%.
Breeze is the mixture of limestone dust and cement, and limestone dust is 9:1 with the weight ratio of cement, and breeze is all by 0.075mm square hole screen；Sand material is the mixture of river sand machine and sand processed, and river sand is 1:1 with the weight ratio of Machine-made Sand, and sand material is all by 1.18mm square hole screen；Rubble is all by basalt and the doleritic mixture of 16mm square hole screen after Mechanical Crushing.
The formate gradation composition of the asphalt of the present embodiment is: when the screen size of square hole screen is respectively 16mm, 13.2mm, 9.5mm, 4.75mm, 2.36mm, 1.18mm, 0.6mm, 0.3mm, 0.15mm, 0.075mm, the percent of pass of corresponding each square hole screen is followed successively by 100%, 99%, 84.7%, 66.1%, 51.7%, 39.3%, 24.9%, 18.1%, 14.1%, 10.6%, and its gradation curve of mineral aggregate is shown in Fig. 1.
Embodiment 2
A kind of skid pad asphalt, it includes each component of following weight content: rubble 61.1%, sand material 28.6% and breeze 10.3%.
Breeze is the mixture of limestone dust, slaked lime and cement, and the part by weight of limestone dust, slaked lime and cement is 8:1:1, and breeze is all by 0.075mm square hole screen；Sand material is the mixture of river sand and Machine-made Sand, and river sand is 1.2:1 with the weight ratio of Machine-made Sand, and sand material is all by 1.18mm square hole screen；Rubble is all by 19mm square hole screen limestone and the mixture of granite after Mechanical Crushing.
The formate gradation composition of the asphalt of the present embodiment is: when the screen size of square hole screen is respectively 19mm, 16mm, 13.2mm, 9.5mm, 4.75mm, 2.36mm, 1.18mm, 0.6mm, 0.3mm, 0.15mm, 0.075mm, the percent of pass of corresponding each square hole screen is followed successively by 100%, 95.8%, 93.7%, 82.7%, 66.7%, 51.4%, 38.9%, 25.3%, 17.6%, 13.7%, 10.3%, and its gradation curve of mineral aggregate is shown in Fig. 2.
Embodiment 3
A kind of skid pad asphalt, it includes each component of following weight content: rubble 60.4%, sand material 29.1% and breeze 10.5%.
Breeze is slaked lime, all by 0.075mm square hole screen；Sand material is the mixture of river sand and Machine-made Sand, and river sand is 1.5:1 with the weight ratio of Machine-made Sand, and sand material is all by 1.18mm square hole screen；Rubble is all by the basalt of 26.5mm square hole screen after Mechanical Crushing.
The formate gradation composition of the asphalt of the present embodiment is: when the screen size of square hole screen is respectively 26.5mm, 19mm, 16mm, 13.2mm, 9.5mm, 4.75mm, 2.36mm, 1.18mm, 0.6mm, 0.3mm, 0.15mm, 0.075mm, the percent of pass of corresponding each square hole screen is followed successively by 100%, 98.1%, 95.7%, 93.9%, 81.6%, 67.7%, 52.4%, 39.6%, 25.2%, 17.7%, 13.8%, 10.5%, and its gradation curve of mineral aggregate is shown in Fig. 3.
Embodiment 4
With reference to Fig. 4, a kind of skid pad asphalt concrete pavement, prior art is used to be covered with bottom 2, basic unit 3, intermediate layer 4 and top layer 5 successively on ground 1, bottom 2 is the AC-20(H that 6cm is thick) bituminous concrete is paved into, basic unit 3 is the AC-16(H that 4cm is thick) bituminous concrete is paved into, intermediate layer 4 is the AC-13(H that 4cm is thick) bituminous concrete is paved into, top layer 5 be the AC-13(H of 4cm thickness) bituminous concrete is paved into.
Described AC-13(H) bituminous concrete is mixed by the skid pad asphalt of Colophonium and embodiment 1, and its bitumen aggregate ratio is 5.9%.
Described AC-16(H) bituminous concrete is mixed by the skid pad asphalt of Colophonium and embodiment 2, and its bitumen aggregate ratio is 5.6%.
Described AC-20(H) bituminous concrete is mixed by the skid pad asphalt described in Colophonium and embodiment 3, and its bitumen aggregate ratio is 5.6%.
Described penetration of bitumens is: under the conditions of temperature 25 DEG C, loading 100g, injection time 5s, it is 64(0.1mm that standard pin vertically penetrates the degree of depth of bitumen samples).
Above-mentioned AC-13(H), AC-16(H) and the determination mode of AC-20(H) bituminous concrete bitumen aggregate ratio be: according to the Marshall design method in " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004), take 5 different bitumen aggregate ratios and be respectively prepared marshal piece, measure the density of 5 test specimens, Marshall stability and flow valuve respectively, and the parameter such as the voidage of calculation testing piece, Colophonium saturation, void in mineral aggregate, take the bitumen aggregate ratio a corresponding to intermediate value of density maxima, degree of stability maximum, the intermediate value of void rate scope, regulation saturation scope1、a2、a3、a4, averaged is as OAC1；Correspond with AC-13(H in JTG F40-2004 with indices), AC-16(H) and AC-20(H) asphalt Marshall Test technical standard require bitumen aggregate ratio scope OACmin～OACmaxIntermediate value is as OAC2；Take OAC1With OAC2Meansigma methods as optimum oil-stone ratio OAC, draw the AC-13(H of the present embodiment respectively), AC-16(H) and the bitumen aggregate ratio of AC-20(H) bituminous concrete.
Measure the AC-13(H of the present embodiment respectively), AC-16(H) and the important technological parameters of AC-20(H) bituminous concrete, be shown in Table 1, to verify that each bituminous concrete meets skid pad and uses requirement.
AC-13(H in the present invention), AC-16(H) and AC-20(H) Marshall Test technical requirement on design that bituminous concrete should meet be shown in Table 2.
Contrast Tables 1 and 2, every technical parameter of the skid pad bituminous concrete of visible the present embodiment is satisfied by skid pad design requirement, can be on the premise of ensureing high-temperature stability, there is the easy property of higher construction, density, water stability and shear behavior, the road surface laid by it can meet the use requirement of two parabolic curve sections of high speed circuit of speed 180km/h in skid pad, provides safe and reliable test site for carrying out the vehicle of properties test.
Claims (7)
1. a skid pad asphalt, it is characterised in that include each component of following weight content: rubble 50～74%, sand material 14～42% and breeze 8～12%；
Described rubble is a kind of material in basalt, diabase, limestone and granite or the mixture of any 2 to 3 kinds or the mixture of four kinds, and rubble is all by 26.5mm square hole screen；Sand material is the mixing of river sand and Machine-made Sand, and sand material is all by 1.18mm square hole screen；Described breeze is the one in agstone, slaked lime and cement or the mixture of any two kinds or the mixture of three kinds, and breeze is all by 0.075mm square hole screen；
Its mineral aggregate gradation scope is:
When the screen size of square hole screen is respectively 26.5mm, 19mm, 16mm, 13.2mm, 9.5mm, 4.75mm, 2.36mm, 1.18mm, 0.6mm, 0.3mm, 0.15mm, 0.075mm,
Corresponding percent of pass is followed successively by 100%, 95 ~ 100%, 91 ~ 100%, 86 ~ 100%, 75 ~ 92%, 55 ~ 80%, 40 ~ 65%, 26 ~ 50%, 18 ~ 34%, 13 ~ 23%, 10 ~ 16%, 8 ~ 12%.
A kind of skid pad the most according to claim 1 asphalt, it is characterised in that include each component of following weight content: rubble 50～70%, sand material 18～42% and breeze 8～12%, rubble is all by 16mm square hole screen；
Its mineral aggregate gradation scope is:
When the screen size of square hole screen is respectively 16mm, 13.2mm, 9.5mm, 4.75mm, 2.36mm, 1.18mm, 0.6mm, 0.3mm, 0.15mm, 0.075mm,
The percent of pass of corresponding each square hole screen is followed successively by 100%, 95 ~ 100%, 78 ~ 92%, 62 ~ 80%, 45 ~ 65%, 30 ~ 50%, 20 ~ 34%, 15 ~ 23%, 10 ~ 16%, 8 ~ 12%.
Skid pad the most according to claim 1 asphalt, it is characterised in that include each component of following weight content: rubble 52～74%, sand material 14～40% and breeze 8～12%, rubble is all by 19mm square hole screen；
Its mineral aggregate gradation scope is:
When the screen size of square hole screen is respectively 19mm, 16mm, 13.2mm, 9.5mm, 4.75mm, 2.36mm, 1.18mm, 0.6mm, 0.3mm, 0.15mm, 0.075mm,
Corresponding percent of pass is followed successively by 100%, 95 ~ 100%, 90 ~ 96%, 76 ~ 88%, 58 ~ 75%, 40 ~ 62%, 26 ~ 48%, 18 ~ 32%, 14 ~ 22%, 10 ~ 16%, 8 ~ 12%.
Skid pad the most according to claim 1 asphalt, it is characterised in that include each component of following weight content: rubble 54～74%, sand material 14～38% and breeze 8～12%, rubble is all by 26.5mm square hole screen；
Its mineral aggregate gradation scope is:
When the screen size of square hole screen is respectively 26.5mm, 19mm, 16mm, 13.2mm, 9.5mm, 4.75mm, 2.36mm, 1.18mm, 0.6mm, 0.3mm, 0.15mm, 0.075mm,
Corresponding percent of pass is followed successively by 100%, 95 ~ 100%, 91 ~ 98%, 86 ~ 95%, 75 ~ 87%, 55 ~ 75%, 40 ~ 60%, 26 ~ 46%, 18 ~ 30%, 13 ~ 21%, 10 ~ 16%, 8 ~ 12%.
5. according to the skid pad asphalt described in claim 1 or 2 or 3 or 4, it is characterised in that: in described sand material, river sand is 1 ~ 1.5:1 with the weight ratio of Machine-made Sand.
6. a skid pad asphalt concrete pavement, it is covered with bottom (2), basic unit (3), intermediate layer (4) and top layer (5) successively by prior art on ground (1), it is characterized in that: bottom (2) is the AC-20(H that 5 ~ 7cm is thick) bituminous concrete is paved into, basic unit (3) is the AC-16(H that 3 ~ 5cm is thick) bituminous concrete is paved into, intermediate layer (4) is the AC-13(H that 3 ~ 5cm is thick) bituminous concrete is paved into, top layer (5) are the AC-13(H that 3 ~ 5cm is thick) bituminous concrete is paved into；
Described AC-13(H) bituminous concrete is mixed by the skid pad asphalt described in Colophonium and claim 2, and its bitumen aggregate ratio is 5.6 ~ 6.2%；
Described AC-16(H) bituminous concrete is mixed by the skid pad asphalt described in Colophonium and claim 3, and its bitumen aggregate ratio is 5.5 ~ 5.9%；
Described AC-20(H) bituminous concrete is mixed by the skid pad asphalt described in Colophonium and claim 4, and its bitumen aggregate ratio is 5.4 ~ 5.8%.
Skid pad the most according to claim 6 asphalt concrete pavement, it is characterised in that the requirement of described penetration of bitumens is: under the conditions of temperature 25 DEG C, loading 100g, injection time 5s, it is 60 ~ 70(0.1mm that standard pin vertically penetrates the degree of depth of bitumen samples).
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| CN111253113A (en) * | 2020-01-21 | 2020-06-09 | 中铁四局集团有限公司 | Reclaimed colloidal particle permeable asphalt concrete and preparation method thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106012745B (en) | 2018-02-06 |
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