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市政工程道路沥青砼面层的施工事项
来源：/ 日期：2023-02-15
为了保证济南沥青砼施工温度要求，在原料和施工过程，除了原料的温度控制，尤其注意覆盖保温、及时、紧跟、控制作业段长度等要求。下面来详细讲解下
In order to ensure the temperature requirements of Jinan asphalt concrete construction, in addition to the temperature control of raw materials and the construction process, special attention should be paid to the requirements of covering and insulation, timely, closely following, and controlling the length of the operation section. Let's explain it in detail
（一）沥青混合料的拌制
（1） Mixing of asphalt mixture
1、配合比设计：马歇尔试验配合比设计法。宜优先采用A级沥青，不宜使用煤沥青。
1. Mix design: Marshall test mix design method. Grade A asphalt should be preferred rather than coal tar asphalt.
2、拌合机械：沥青混合料可采用间歇式拌和机或连续式拌和机拌制。间歇式拌和机在每盘拌合时，都计量混合料各种材料的质量；而连续式拌和机是在计量各种材料之后，连续不断地送进拌合器中拌合。
2. Mixing machinery: asphalt mixture can be mixed by intermittent mixer or continuous mixer. The batch mixer measures the quality of various materials of the mixture when mixing each plate; The continuous mixer is continuously sent into the mixer for mixing after measuring various materials.
3、沥青混合料拌合
3. Asphalt mixture mixing
（1）沥青加热温度，混合料出料温度、废弃温度等，不同标号的沥青要求不同，无需记忆。
(1) Asphalt heating temperature, mixture discharge temperature, waste temperature, etc., different grades of asphalt have different requirements and need not be remembered.
（2）混合料储料过程中温度降不高于10℃。
(2) The temperature drop during the storage of the mixture shall not be higher than 10 ℃.
（3）贮存时间不得超过72h。
(3) The storage time shall not exceed 72h.
（二）铺筑试验段
（2） Paving test section
1、试验段长度：一般为100ｍ～200m。
1. Test section length: generally 100m~200m.
2、试验段目的：
2. Purpose of test section:
（1）检验各种施工机械的类型、数量及组合方式是否匹配。
(1) Check whether the type, quantity and combination mode of various construction machinery match.
（2）确定透层油的喷洒方式和效果。
(2) Determine the spraying method and effect of priming oil.
（3）验证沥青混合料配合比设计是否合适，提出生产用的标准配合比和佳沥青用量。
(3) Verify whether the mix proportion design of asphalt mixture is appropriate, and propose the standard mix proportion and optimal asphalt dosage for production.
（4）确定松铺系数。
(4) Determine the coefficient of loose paving.
（5）确定摊铺、压实工艺及作业方式等。
(5) Determine the paving and compaction process and operation mode.
（6）确定压实度的标准检测方法。
(6) Standard test method for determining compactness.
（7）检测试验段的渗水系数。
(7) Check the permeability coefficient of the test section.
3、试验段铺筑应由建设单位、设计单位、施工单位、监理单位等有关各方共同参加，及时商定有关事项，明确试验结论。铺筑结束后，施工单位应就各项试验内容提出完整的试验路施工、检测报告，取得业主或监理批复后，方可正式铺筑。
3. The construction unit, design unit, construction unit, supervision unit and other relevant parties shall participate in the paving of the test section, and timely agree on relevant matters and clarify the test conclusion. After the completion of paving, the construction unit shall put forward a complete test road construction and inspection report for each test content, which can be formally paved after obtaining the approval of the owner or supervisor.
（三）基层的准备与放样
（3） Preparation and setting out of base course
1、施工前应检查基层的施工质量，主要检查项目：厚度、压实度、平整度、路拱等项目。
1. Before construction, the construction quality of the base course shall be checked, mainly including thickness, compactness, flatness, road camber and other items.
2、在基层表面喷洒透层油（沥青稳定碎石基层除外，它用的是粘层油，另外，在旧水泥混凝土路面和旧沥青砼路面加铺沥青混合料时，也用的是粘层油），在透层油完全渗入基层后方可及时铺筑面层。一般在面层铺筑前4～8小时铺筑，目的是使面层和基层比较好地粘结在一起，形成整体。
2. Spray the prime coat oil on the surface of the base course (except for the asphalt stabilized macadam base course, which uses the tack coat oil. In addition, when the asphalt mixture is paved on the old cement concrete pavement and the old asphalt concrete pavement, the tack coat oil is also used). The surface course can be paved in time after the prime coat oil completely penetrates into the base course. Generally, it is paved 4 to 8 hours before the surface course is paved, so that the surface course and the base course can be well bonded to form a whole.
3、透层油材料选择：
3. Selection of priming oil material:
施工中应根据基层类型选择渗透性好的液体沥青、乳化沥青做透层油。沥青路面透油层材料的规格、用量和撤布养护应符合《城镇道路施工与验收规范》CJJ1的有关规定。
During construction, liquid asphalt and emulsified asphalt with good permeability shall be selected as prime coat oil according to the type of base course. The specification, dosage and removal and maintenance of asphalt pavement prime coat materials shall comply with the relevant provisions of the Code for Construction and Acceptance of Urban Roads CJJ1.
4、符合下列情况之一时，必须喷洒粘层油（目的是加强粘结）
4. If one of the following conditions is met, the adhesive layer oil must be sprayed (to strengthen the bonding)
（1）双层式或多层式热拌热铺沥青混合料面层之间应喷洒粘层油，加强沥青层与沥青层之间的粘结。
(1) The tack coat oil shall be sprayed between the surface layers of the double-layer or multi-layer hot mix asphalt mixture to strengthen the bonding between the asphalt layer and the asphalt layer.
（2）水泥混凝土路面或旧沥青路面层上加铺沥青层，加强沥青层与旧路面之间的粘结。
(2) The cement concrete pavement or the old asphalt pavement shall be paved with an asphalt layer to strengthen the bond between the asphalt layer and the old pavement.
（3）既有结构、路缘石和检查井等构筑物与沥青混合料层连接面喷洒粘层油，加强沥青砼与既有结构物之间的粘结。
(3) The connecting surface of existing structures, curbs, inspection wells and other structures and asphalt mixture layer shall be sprayed with tack coat oil to strengthen the bonding between asphalt concrete and existing structures.
5、粘层油材料选择：
5. Selection of tack coat oil material:
宜采用快裂或中裂乳化沥青、改性乳化沥青，也可采用快凝或中凝液体石油作粘层油。粘层油材料的规格、用量和洒布养护应符合《城镇道路施工与验收规范》CJJ1的有关规定。
Quick-cracking or medium-cracking emulsified asphalt, modified emulsified asphalt, and quick-setting or medium-setting liquid petroleum can also be used as tack coat oil. The specification, dosage, distribution and maintenance of the tack coat oil material shall comply with the relevant provisions of the Code for Construction and Acceptance of Urban Roads CJJ1.
6、在准备好的基层上测量放样，设置样桩，标出混合料松铺厚度，采用自动调平摊铺机摊铺时，还应放出引导摊铺机运行走向和高程的控制基准线。
6. Measure and set out on the prepared base course, set sample piles, mark the loose paving thickness of the mixture, and set out the control datum line to guide the running direction and elevation of the paver when paving with the automatic leveling paver.
This is the construction of asphalt concrete pavement for municipal engineering roads. You can come to us anytime if you have any doubts or needs Contact for consultation!
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