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沥青混凝土路面施工要注重这几点问题

来源：/ 日期：2022-08-24

沥青混凝土路面施工要注重什么问题呢？下面济南沥青混凝土厂家为您讲解一番，希望能够给您好的帮助，让您更好的运用施工。

What problems should be paid attention to in the construction of asphalt concrete pavement? Next, Jinan asphalt concrete manufacturer will explain it to you. I hope it can help you and make you better use of the construction.

一、沥青面层离析

1、 Segregation of asphalt surface

形成原因

Cause of formation

1、混合料集料公称大粒径与铺筑面层厚度之间比例不匹配；

1. The proportion between the nominal large particle size of the aggregate and the thickness of the paving surface layer is not matched;

2、沥青混合料级配不佳；

2. Poor gradation of asphalt mixture;

3、混合料拌和不均匀，装卸、运输、摊铺过程中发生离析；

3. The mixture is not evenly mixed, and segregation occurs during loading, unloading, transportation and paving;

4、摊铺机工作状态不佳。

4. The paver is in poor working condition.

防治措施

Prevention and control measures

1、适当选择小一级集料公称大粒径的沥青混合料，以与面层厚度相适应。

1. The asphalt mixture with nominal large particle size of small-scale aggregate shall be appropriately selected to adapt to the thickness of the surface course.

2、适当调整生产配合比矿料级配，使稍粗集料接近级配范围上限，较细集料接近级配范围下限；

2. Properly adjust the production mix proportion and mineral aggregate gradation to make the coarse aggregate close to the upper limit of the gradation range and the fine aggregate close to the lower limit of the gradation range;

3、运料装料时应少分三次装料，避免形成一个锥体使粗料滚落锥底；

3. During transportation and loading, the materials shall be loaded at least three times to avoid forming a cone to roll the coarse materials to the bottom of the cone;

4、摊铺机调整到佳状态，熨平板前料门开度应与集料大粒径相适应，螺旋布料器上混合料的高度应基本一致，料面应高出螺旋布料器的2/3以上；

4. When the paver is adjusted to a good state, the opening of the material door in front of the screed shall be compatible with the large particle size of the aggregate, the height of the mixture on the spiral distributor shall be basically the same, and the material level shall be higher than 2 / 3 of the spiral distributor;

5、布料器下增设橡胶挡板；

5. Rubber baffle is added under the distributor;

6、加长螺旋输送器。

6. Lengthen the auger.

二、沥青面层压实度不合格

2、 The compaction degree of asphalt surface course is unqualified

形成原因

Cause of formation

1、沥青混合料级配差；

1. Poor gradation of asphalt mixture;

2、沥青混合料碾压温度不够；

2. The rolling temperature of asphalt mixture is not enough;

3、压路机质量小，压实遍数不够；

3. The quality of the roller is small and the compaction times are insufficient;

4、压路机未走到边缘；

4. The roller does not go to the edge;

5、标准密度不准，

5. The standard density is not accurate,

6、控制碾压温度过低

6. Control rolling temperature too low

防治措施

Prevention and control measures

1、确保沥青混合料的良好级配；

1. Ensure good gradation of asphalt mixture;

2、做好保温措施，确保沥青混合料碾压温度不低于规定要求；

2. Thermal insulation measures shall be taken to ensure that the rolling temperature of asphalt mixture is not lower than the specified requirements;

3、选用符合要求质量的压路机压实，压实遍数符合规定；

3. The roller with the required quality shall be selected for compaction, and the compaction times shall meet the requirements;

4、路缘石应在沥青面层施工前安装完毕，压路机应从外侧向中心碾压，且紧靠路缘石碾压；

4. The kerb shall be installed before the construction of the asphalt surface course. The roller shall roll from the outside to the center and close to the kerb;

5、严格进行沥青马歇尔试验，保证马歇尔标准密度的准确性。

5. Strictly carry out asphalt Marshall test to ensure the accuracy of Marshall standard density.
济南沥青混凝土

三、沥青面层空隙率不合格

3、 The void ratio of asphalt surface course is unqualified

形成原因

Cause of formation

1、马歇尔试验空隙率偏大或偏小；

1. Marshall test porosity is too large or too small;

2、压实度未控制在规定的范围内；

2. The compaction degree is not controlled within the specified range;

3、混合料中细集料含量偏低；

3. The content of fine aggregate in the mixture is low;

4、油石比控制较差。

4. The oil stone ratio is poorly controlled.

防治措施

Prevention and control measures

1、在沥青拌和站的热料仓口取集料筛分，以确保沥青混合料矿料级配符合规定；

1. The aggregate shall be taken from the hot bin of the asphalt mixing station for screening to ensure that the mineral aggregate gradation of the asphalt mixture meets the requirements;

2、确保生产油石比在规定的误差范围内；

2. Ensure that the production oil stone ratio is within the specified error range;

3、控制碾压温度在规定范围；

3. Control the rolling temperature within the specified range;

4、选用符合要求的压路机，控制碾压遍数；

4. Select the road roller that meets the requirements and control the rolling times;

5、严格控制压实度。

5. The compactness shall be strictly controlled.

四、沥青面层厚度不够

4、 Insufficient thickness of asphalt surface course

形成原因

Cause of formation

1、试铺时未认真确定好松铺系数；

1. The coefficient of loose paving is not carefully determined during trial paving;

2、施工时未根据每天检测结果对松铺厚度进行调整；

2. During construction, the loose paving thickness is not adjusted according to the daily inspection results;

3、摊铺机或找平装置未调试好；

3. The paver or leveling device is not properly adjusted;

4、基层标高超标。

4. The elevation of the base course exceeds the standard.

防治措施

Prevention and control measures

1、试铺时仔细确定松铺系数，每天施工中根据实际检测情况进行调整；

1. During trial paving, the coefficient of loose paving shall be carefully determined, and shall be adjusted according to the actual detection conditions during daily construction;

2、调整好摊铺机及找平装置的工作状态；

2. Adjust the working state of paver and leveling device;

3、面层施工前认真检查下封层标高，基层超标部分应采取合适的处理措施，补好下封层，然后再进行面层施工；

3. The elevation of the lower seal layer shall be carefully checked before the surface layer construction. Appropriate treatment measures shall be taken for the part of the base layer exceeding the standard, and the lower seal layer shall be repaired before the surface layer construction;

4、根据每天沥青混合料摊铺总量检查摊铺厚度，及时调整。

4. Check the paving thickness according to the total amount of asphalt mixture paving every day and adjust it in time.

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