瀝青面層技術交底.doc

交底內容：
本工程的道路面層為瀝青砼面層，共分為三層：從下至上分別為：1、乳化瀝青透層，2、粗粒式瀝青砼厚7cm，3、中粒式瀝青砼下面層厚5cm，4、細粒式瀝青砼上面層厚4cm。采用商品瀝青砼，委托專業瀝青施工隊進行施工。施工工藝要求如下：
一、、混合料的拌和
（1）粗、細集料應分類堆放和供料，取自不同料源的集料應分開堆放，應對每個料源的材料進行抽樣試驗，并應經工程師批準。
（2）按目標配合比設計，生產配合比設計，生產配合驗證三個階段進行試拌、試鋪后，進行大批生產。
（3）每種規格的集料、礦料和瀝青都必須分別按要求的比例進行配料。
（4）瀝青材料采用導熱油加熱，加熱溫度在160-170℃范圍內，礦料加熱溫度為170-180℃，瀝青與礦料的加熱溫度應調節到能使拌和的瀝青混凝土出廠溫度在150-160℃，不準有花白料、超溫料，混合料超過200℃者應廢棄，并應保證運到施工現場的溫度不低于140-150℃。瀝青混合料的施工溫度見下表所示。
瀝青混合料的施工溫度（℃）
瀝青加熱溫度：160-170
礦料溫度：170-180
混合料出廠溫度：正常范圍150-165超過200廢棄
混合料運輸到現場：溫度不低于140-150
攤鋪溫度正常施工：低于130-140，不超過165 低溫施工 不低于140-150，不超過175
碾壓溫度正常施工：130-140不低于120 低溫施工 140-150不低于130
碾壓終了溫度：不低
Cards on the table contents:
The project road surface layer of asphalt concrete surface, is divided into three layers: bottom, respectively: 1, Emulsified Bitumen, 2, coarse asphalt concrete thickness of 7cm, 3, in tablets of asphalt concrete layer below thickness 5cm, 4, fine style on the concrete thickness 4cm. Adopting asphalt concrete, commissioned a professional construction team for construction of asphalt. Construction Technology requirements are as follows:
1,, mixing mixture
(1) coarse and fine aggregate shall be piled up and feeding categories, from different sources of aggregate material should be piled separately to address the source of material for each material sample test, and should be approved by the Engineer.
(2) on target mix design, production and mix design, production and validation of three stages with the test mix, try the cottage, for mass production.
(3) for each size of aggregate, mineral aggregate and asphalt are required to be in proportion to the respective ingredients.
(4) by conducting oil heating asphalt material, heating temperature range of 160-170 ℃, mineral aggregate heating temperature of 170-180 ℃, asphalt and aggregate heating temperature should be adjusted to allow mixing of the asphalt concrete factory temperatures of 150 -160 ℃, are not allowed to have gray material, over-temperature materials, mixture over 200 ℃ should waste and should be shipped to the construction site to ensure the temperature of not less than 140-150 ℃. Construction of asphalt temperature as shown in the table below.
Asphalt Construction Temperature (℃)
Asphalt heating temperature :160-170
Mineral aggregate temperature :170-180
Mixture factory temperature: more than 200 abandoned the normal range 150-165
Mixture transport to the site: the temperature not lower than 140-150
Paving normal working temperature: less than 130-140, not more than 165 low-temperature construction of not less than 140-150, not more than 175
Rolling temperature is normal construction :130-140 low temperature of not less than 120 works of not less than 130 140-150
End rolling temperature: not lower
 

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