WO2021248922A1 - 一种沥青混合料阶梯式搅拌方法 - Google Patents

一种沥青混合料阶梯式搅拌方法 Download PDF

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WO2021248922A1
WO2021248922A1 PCT/CN2021/075410 CN2021075410W WO2021248922A1 WO 2021248922 A1 WO2021248922 A1 WO 2021248922A1 CN 2021075410 W CN2021075410 W CN 2021075410W WO 2021248922 A1 WO2021248922 A1 WO 2021248922A1
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asphalt
scale
aggregate
mixing
powder
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PCT/CN2021/075410
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English (en)
French (fr)
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高国强
揭文忠
陈君怀
陈豪毅
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福建省铁拓机械股份有限公司
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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
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
    • E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
    • E01C19/1013—Plant characterised by the mode of operation or the construction of the mixing apparatus; Mixing apparatus
    • 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
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
    • E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
    • E01C19/1059—Controlling the operations; Devices solely for supplying or proportioning the ingredients
    • E01C19/1068—Supplying or proportioning the ingredients
    • E01C19/1072—Supplying or proportioning the ingredients the solid ingredients
    • 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
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
    • E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
    • E01C2019/1081—Details not otherwise provided for

Definitions

  • the invention relates to the technical field of asphalt mixture mixing, in particular to a stepped asphalt mixture mixing method.
  • the mixing sequence of asphalt mixing equipment is: aggregate injection, powder injection, asphalt injection, mixing time, discharge time, the entire mixing cycle is 45S, as shown in the figure below, this mixing process is used in the production of asphalt mixture
  • the thickness of the asphalt film covering the surface of aggregate and powder is uneven, which is easy to produce thick asphalt film on the surface of the powder (because the surface area of the same weight of powder and fine material is larger than that of coarse aggregate, the powder and fine material are absorbed first.
  • Asphalt The asphalt film on the surface of the aggregate is thin, and sometimes the surface of the large aggregate part is not covered. It is easy to cause the asphalt mixture to not be well bonded together after being compacted, and the required strength cannot be achieved. There is a problem of road damage.
  • the present invention provides a stepwise mixing method for asphalt mixture, which can solve the problem of uneven thickness of the asphalt film coated on the surface of the aggregate and powder by the asphalt mixture.
  • the main technical solutions adopted by the present invention include:
  • a stepwise mixing method for asphalt mixture comprising a first hot silo group, a second hot silo group, a first aggregate scale, a second aggregate scale, an asphalt scale, and a mixing tank;
  • the first hot bin group is connected to the mixing cylinder through the first aggregate scale
  • the second hot material bin group is connected to the mixing cylinder through the second aggregate scale
  • the asphalt scale is connected with the mixing tank;
  • the second aggregate scale receives and measures the coarse aggregate in the second hot bin group, and sequentially puts the measured coarse aggregate and the preset ratio of asphalt in the asphalt scale into the mixing tank for one time Stir
  • the first aggregate scale receives and measures the fine aggregate in the first hot bin group, and sequentially puts the measured fine aggregate and the remaining asphalt in the asphalt scale into the mixing tank for secondary mixing .
  • the beneficial effect of the present invention is that the coarse aggregate in the second hot silo group is received and measured by the second aggregate scale, and the measured coarse aggregate and the preset ratio of asphalt in the asphalt scale are put in order Perform a mixing in the mixing tank; the first aggregate scale receives and measures the fine aggregate in the first hot bin group, and puts the measured fine aggregate and the remaining asphalt in the asphalt scale in sequence
  • the second mixing is carried out in the mixing tank, and the preset ratio of asphalt and coarse aggregate are mixed and coated first through one mixing, which ensures that the surface of the coarse aggregate is covered with asphalt, which solves the problem of asphalt mixture coating.
  • the uneven thickness of the asphalt film on the surface of the aggregate and powder can overcome the problem that the asphalt mixture cannot be well bonded together after being compacted.
  • Fig. 1 is a schematic diagram of the overall structure of an asphalt mixture stepwise mixing method according to an embodiment of the present invention.
  • a stepwise mixing method for asphalt mixture including a first hot silo group 1, a second hot silo group 2, a first aggregate scale 3, a second aggregate scale 4, an asphalt scale 5 and Mixing tank 6;
  • the first hot silo group 1 is connected to the mixing cylinder 6 through the first aggregate scale 3, and the second hot silo group 2 is connected to the mixing cylinder through the second aggregate scale 4 6-phase connection;
  • the asphalt scale 5 is connected to the mixing tank 6;
  • the second aggregate scale 4 receives and measures the coarse aggregate in the second hot bin group 2, and sequentially puts the measured coarse aggregate and the preset ratio of asphalt in the asphalt scale 5 into the mixing tank Stir once in 6;
  • the first aggregate scale 3 receives and measures the fine aggregates in the first hot silo group 1, and sequentially puts the measured fine aggregates and the remaining asphalt in the asphalt scale 5 into the mixing tank 6 Perform a second stirring.
  • the preset ratio is 50%
  • the powder bin 7 and the mixing cylinder 6 are connected.
  • the step of placing the measured fine aggregates and the remaining asphalt in the asphalt scale 5 into the mixing tank 6 for secondary mixing is specifically as follows:
  • the measured fine aggregate, the powder in the powder bin 7 and the remaining asphalt in the asphalt scale 5 are sequentially put into the mixing tank 6 for secondary mixing.
  • the diameter of the fine aggregate ranges from 0 to 10 mm, and the diameter of the coarse aggregate ranges from 11 to 25 mm.
  • the first hot bin group 1 includes No. 1, No. 2 and No. 3 warehouses.
  • No. 1 is an aggregate with a grain size range of 0 to 3 mm
  • No. 2 is a grain size range of 4.
  • No. 3 bin is aggregate with diameter range of 6 ⁇ 10mm;
  • the second hot bin group 2 includes No. 4, No. 5 and No. 6 warehouses.
  • No. 4 is for aggregates with a diameter range of 11 to 16 mm
  • No. 5 is for aggregates with a diameter range of 17 to 22 mm.
  • the aggregates of No. 6 are aggregates with a diameter range of 23-25 mm;

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)

Abstract

一种沥青混合料阶梯式搅拌方法，包括第一热料仓组（1）、第二热料仓组（2）、第一骨料秤（3）、第二骨料秤（4）、沥青秤（5）和搅拌缸（6）；第一热料仓组（1）通过第一骨料秤（3）与搅拌缸（6）连接，第二热料仓组（2）通过第二骨料秤（4）与搅拌缸（6）连接；沥青秤（5）与搅拌缸（6）相连接；第二骨料秤（4）接收并计量第二热料仓组（2）中的粗骨料，将计量后的粗骨料和沥青秤（5）中预设比例的沥青依次投放到搅拌缸（6）中进行一次搅拌；第一骨料秤（3）接收并计量第一热料仓组（1）中的细骨料，将计量后的细骨料和沥青秤（5）中剩余的沥青依次投放到搅拌缸（6）中进行二次搅拌。该方法保证了粗骨料表面都裹覆到沥青，避免了沥青混合料裹覆在骨料和粉料表面的沥青膜厚度不均。

Description

一种沥青混合料阶梯式搅拌方法 技术领域
本发明涉及沥青混合料搅拌技术领域，特别涉及一种沥青混合料阶梯式搅拌方法。
背景技术
通常沥青混合料搅拌设备的搅拌时序为，骨料投放，粉料投放，沥青投放，搅拌时间，出料时间，整个搅拌周期为45S，如下图，此种搅拌工艺方法在生产出来的沥青混合料裹覆在骨料和粉料表面的沥青膜厚度不均，易产生粉料表面沥青膜厚度厚(因为相同重量的粉料和细料表面积比粗骨料大，所以粉料和细料先吸收沥青)骨料表面沥青膜薄，有时大骨料部分表面出现没有裹覆的现象，容易造成沥青混合料经压实后不能很好的粘结在一起，达不到所需要的强度，且易出现路面损坏的问题。
发明内容
(一)要解决的技术问题
为了解决现有技术的上述问题，本发明提供一种沥青混合料阶梯式搅拌方法，能够解决沥青混合料裹覆在骨料和粉料表面的沥青膜厚度不均的问题。
(二)技术方案
为了达到上述目的，本发明采用的主要技术方案包括：
一种沥青混合料阶梯式搅拌方法，包括第一热料仓组、第二热料仓组、第一骨料秤、第二骨料秤、沥青秤和搅拌缸；
所述第一热料仓组通过所述第一骨料秤与所述搅拌缸相连接，所述第二热料仓组通过所述第二骨料秤与所述搅拌缸相连接；
所述沥青秤与所述搅拌缸相连接；
所述第二骨料秤接收并计量第二热料仓组中的粗骨料，将计量后的粗骨料和所述沥青秤中预设比例的沥青依次投放到所述搅拌缸中进行一次搅拌；
所述第一骨料秤接收并计量第一热料仓组中的细骨料，将计量后的细骨料和所述沥青秤中剩余的沥青依次投放到所述搅拌缸中进行二次搅拌。
(三)有益效果
本发明的有益效果在于：通过所述第二骨料秤接收并计量第二热料仓组中的粗骨料，将计量后的粗骨料和所述沥青秤中预设比例的沥青依次投放到所述搅拌缸中进行一次搅拌；所述第一骨料秤接收并计量第一热料仓组中的细骨料，将计量后的细骨料和所述沥青秤中剩余的沥青依次投放到所述搅拌缸中进行二次搅拌，先通过一次搅拌将预设比例的沥青与粗骨料先进行搅拌裹覆，保证了粗骨料表面都裹覆到沥青，解决了沥青混合料裹覆在骨料和粉料表面的沥青膜厚度不均问题，从而克服沥青混合料经压实后不能很好的粘结在一起的问题。
附图说明
图1为本发明实施例的沥青混合料阶梯式搅拌方法的整体结构示意图。
【附图标记说明】
1：第一热料仓组；2：第二热料仓组；3：第一骨料秤；4：第二骨料秤；5：沥青秤；6：搅拌缸；7：粉仓；8：粉秤。
具体实施方式
为了更好的解释本发明，以便于理解，下面结合附图，通过具体实施方式，对本发明作详细描述。
实施例一
请参照图1，一种沥青混合料阶梯式搅拌方法，包括第一热料仓组1、第二热料仓组2、第一骨料秤3、第二骨料秤4、沥青秤5和搅拌缸6；
所述第一热料仓组1通过所述第一骨料秤3与所述搅拌缸6相连接，所述第二热料仓组2通过所述第二骨料秤4与所述搅拌缸6相连接；
所述沥青秤5与所述搅拌缸6相连接；
所述第二骨料秤4接收并计量第二热料仓组2中的粗骨料，将计量后的粗骨料和所述沥青秤5中预设比例的沥青依次投放到所述搅拌缸6中进行一次搅拌；
所述第一骨料秤3接收并计量第一热料仓组1中的细骨料，将计量后的细骨料和所述沥青秤5中剩余的沥青依次投放到所述搅拌缸6中进行二次搅拌。
具体地，所述预设比例为50％；
还包括粉仓7；
所述粉仓7和所述搅拌缸6相连接。
所述的将计量后的细骨料和所述沥青秤5中剩余的沥青依次投放到所述搅拌缸6中进行二次搅拌具体为：
将计量后的细骨料、粉仓7中的粉料和所述沥青秤5中剩余的沥青依次投放到所述搅拌缸6中进行二次搅拌。
还包括粉秤8，所述粉秤8设置于所述粉仓7和搅拌缸6之间。
所述细骨料的径粒范围为0至10毫米，所述粗骨料的径粒范围为11至25毫米。
具体地，所述第一热料仓组1包括1号仓、2号仓和3号仓，1号仓为径粒范围为0～3毫米的骨料，2号仓为径粒范围为4～6毫米的骨料，3号仓为径粒范围为6～10毫米的骨料；
所述第二热料仓组2包括4号仓、5号仓和6号仓，4号仓为径粒范围为11～16毫米的骨料，5号仓为径粒范围为17～22毫米的骨料，6号仓 为径粒范围为23～25毫米的骨料；
以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等同变换，或直接或间接运用在相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (5)

  1. 一种沥青混合料阶梯式搅拌方法，其特征在于，包括第一热料仓组、第二热料仓组、第一骨料秤、第二骨料秤、沥青秤和搅拌缸；
    所述第一热料仓组通过所述第一骨料秤与所述搅拌缸相连接，所述第二热料仓组通过所述第二骨料秤与所述搅拌缸相连接；
    所述沥青秤与所述搅拌缸相连接；
    所述第二骨料秤接收并计量第二热料仓组中的粗骨料，将计量后的粗骨料和所述沥青秤中预设比例的沥青依次投放到所述搅拌缸中进行一次搅拌；
    所述第一骨料秤接收并计量第一热料仓组中的细骨料，将计量后的细骨料和所述沥青秤中剩余的沥青依次投放到所述搅拌缸中进行二次搅拌。
  2. 根据权利要求1所述的沥青混合料阶梯式搅拌方法，其特征在于，还包括粉仓；
    所述粉仓和所述搅拌缸相连接。
  3. 根据权利要求2所述的沥青混合料阶梯式搅拌方法，其特征在于，所述的将计量后的细骨料和所述沥青秤中剩余的沥青依次投放到所述搅拌缸中进行二次搅拌具体为：
    将计量后的细骨料、粉仓中的粉料和所述沥青秤中剩余的沥青依次投放到所述搅拌缸中进行二次搅拌。
  4. 根据权利要求2所述的沥青混合料阶梯式搅拌方法，其特征在于，还包括粉秤，所述粉秤设置于所述粉仓和搅拌缸之间。
  5. 根据权利要求1所述的沥青混合料阶梯式搅拌方法，其特征在于，所述细骨料的径粒范围为0至10毫米，所述粗骨料的径粒范围为11至25毫米。
PCT/CN2021/075410 2020-06-11 2021-02-05 一种沥青混合料阶梯式搅拌方法 WO2021248922A1 (zh)

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