黄阁东二路道路工程沥青面层技术交底.doc
交底内容:
本工程的道路面层为沥青砼面层,共分为三层:从下至上分别为:1、乳化沥青透层,2、粗粒式沥青砼厚7cm,3、中粒式沥青砼下面层厚5cm,4、细粒式沥青砼上面层厚4cm。采用商品沥青砼,委托专业沥青施工队进行施工。施工工艺要求如下:
一、、混合料的拌和
(1)粗、细集料应分类堆放和供料,取自不同料源的集料应分开堆放,应对每个料源的材料进行抽样试验,并应经工程师批准。
(2)按目标配合比设计,生产配合比设计,生产配合验证三个阶段进行试拌、试铺后,进行大批生产。
(3)每种规格的集料、矿料和沥青都必须分别按要求的比例进行配料。
(4)沥青材料采用导热油加热,加热温度在160-170℃范围内,矿料加热温度为170-180℃,沥青与矿料的加热温度应调节到能使拌和的沥青混凝土出厂温度在150-160℃,不准有花白料、超温料,混合料超过200℃者应废弃,并应保证运到施工现场的温度不低于140-150℃。沥青混合料的施工温度见下表所示。
沥青混合料的施工温度(℃)
沥青加热温度:160-170
矿料温度:170-180
混合料出厂温度:正常范围150-165超过200废弃
混合料运输到现场:温度不低于140-150
摊铺温度正常施工:低于130-140,不超过165 低温施工 不低于140-150,不超过175
碾压温度正常施工:130-140不低于120 低温施工 140-150不低于130
碾压终了温度:不低于70
(继下页)
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
Rolled end of the temperature: not less than 70
(Following the next page)
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