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              瀝青混凝土路面施工要注重這幾點問題

              來源:http://www.kecengkeh.net/ 日期:2022-08-24
              瀝青混凝土路面施工要注重什么問題呢?下面濟南瀝青混凝土廠家為您講解一番,希望能夠給您好的幫助,讓您更好的運用施工。
              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、瀝青面層離析
              1、 Segregation of asphalt surface
              形成原因
              Cause of formation
              1、混合料集料公稱大粒徑與鋪筑面層厚度之間比例不匹配;
              1. The proportion between the nominal large particle size of the aggregate and the thickness of the paving surface layer is not matched;
              2、瀝青混合料級配不佳;
              2. Poor gradation of asphalt mixture;
              3、混合料拌和不均勻,裝卸、運輸、攤鋪過程中發生離析;
              3. The mixture is not evenly mixed, and segregation occurs during loading, unloading, transportation and paving;
              4、攤鋪機工作狀態不佳。
              4. The paver is in poor working condition.
              防治措施
              Prevention and control measures
              1、適當選擇小一級集料公稱大粒徑的瀝青混合料,以與面層厚度相適應。
              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、適當調整生產配合比礦料級配,使稍粗集料接近級配范圍上限,較細集料接近級配范圍下限;
              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、運料裝料時應少分三次裝料,避免形成一個錐體使粗料滾落錐底;
              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、攤鋪機調整到佳狀態,熨平板前料門開度應與集料大粒徑相適應,螺旋布料器上混合料的高度應基本一致,料面應高出螺旋布料器的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、布料器下增設橡膠擋板;
              5. Rubber baffle is added under the distributor;
              6、加長螺旋輸送器。
              6. Lengthen the auger.
              二、瀝青面層壓實度不合格
              2、 The compaction degree of asphalt surface course is unqualified
              形成原因
              Cause of formation
              1、瀝青混合料級配差;
              1. Poor gradation of asphalt mixture;
              2、瀝青混合料碾壓溫度不夠;
              2. The rolling temperature of asphalt mixture is not enough;
              3、壓路機質量小,壓實遍數不夠;
              3. The quality of the roller is small and the compaction times are insufficient;
              4、壓路機未走到邊緣;
              4. The roller does not go to the edge;
              5、標準密度不準,
              5. The standard density is not accurate,
              6、控制碾壓溫度過低
              6. Control rolling temperature too low
              防治措施
              Prevention and control measures
              1、確保瀝青混合料的良好級配;
              1. Ensure good gradation of asphalt mixture;
              2、做好保溫措施,確保瀝青混合料碾壓溫度不低于規定要求;
              2. Thermal insulation measures shall be taken to ensure that the rolling temperature of asphalt mixture is not lower than the specified requirements;
              3、選用符合要求質量的壓路機壓實,壓實遍數符合規定;
              3. The roller with the required quality shall be selected for compaction, and the compaction times shall meet the requirements;
              4、路緣石應在瀝青面層施工前安裝完畢,壓路機應從外側向中心碾壓,且緊靠路緣石碾壓;
              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、嚴格進行瀝青馬歇爾試驗,保證馬歇爾標準密度的準確性。
              5. Strictly carry out asphalt Marshall test to ensure the accuracy of Marshall standard density.
              濟南瀝青混凝土
              三、瀝青面層空隙率不合格
              3、 The void ratio of asphalt surface course is unqualified
              形成原因
              Cause of formation
              1、馬歇爾試驗空隙率偏大或偏??;
              1. Marshall test porosity is too large or too small;
              2、壓實度未控制在規定的范圍內;
              2. The compaction degree is not controlled within the specified range;
              3、混合料中細集料含量偏低;
              3. The content of fine aggregate in the mixture is low;
              4、油石比控制較差。
              4. The oil stone ratio is poorly controlled.
              防治措施
              Prevention and control measures
              1、在瀝青拌和站的熱料倉口取集料篩分,以確保瀝青混合料礦料級配符合規定;
              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、確保生產油石比在規定的誤差范圍內;
              2. Ensure that the production oil stone ratio is within the specified error range;
              3、控制碾壓溫度在規定范圍;
              3. Control the rolling temperature within the specified range;
              4、選用符合要求的壓路機,控制碾壓遍數;
              4. Select the road roller that meets the requirements and control the rolling times;
              5、嚴格控制壓實度。
              5. The compactness shall be strictly controlled.
              四、瀝青面層厚度不夠
              4、 Insufficient thickness of asphalt surface course
              形成原因
              Cause of formation
              1、試鋪時未認真確定好松鋪系數;
              1. The coefficient of loose paving is not carefully determined during trial paving;
              2、施工時未根據每天檢測結果對松鋪厚度進行調整;
              2. During construction, the loose paving thickness is not adjusted according to the daily inspection results;
              3、攤鋪機或找平裝置未調試好;
              3. The paver or leveling device is not properly adjusted;
              4、基層標高超標。
              4. The elevation of the base course exceeds the standard.
              防治措施
              Prevention and control measures
              1、試鋪時仔細確定松鋪系數,每天施工中根據實際檢測情況進行調整;
              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、調整好攤鋪機及找平裝置的工作狀態;
              2. Adjust the working state of paver and leveling device;
              3、面層施工前認真檢查下封層標高,基層超標部分應采取合適的處理措施,補好下封層,然后再進行面層施工;
              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、根據每天瀝青混合料攤鋪總量檢查攤鋪厚度,及時調整。
              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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