行业资讯
加纤维沥青混凝土的拌和要求
来源：/ 日期：2022-12-19
加纤维沥青混凝土的施工方法与传统沥青混凝土的施工基本相同，分为进场材料检验、拌和设备的选型、拌和、摊铺和碾压一个工序进行，下面济南沥青混凝土生产厂家就来讲讲加纤维沥青混凝土的拌和要求。
The construction method of fiber reinforced asphalt concrete is basically the same as that of traditional asphalt concrete, which is divided into one process: inspection of incoming materials, selection of mixing equipment, mixing, paving and rolling. Next, Jinan asphalt concrete manufacturer will talk about the mixing requirements of fiber reinforced asphalt concrete.
1、确定每盘热料仓的配合比，计算出每盘混合料的质量，根据目标配合比确定的纤维用量计算每盘混合料中投放的纤维质量，然后按此质量对进场的纤维进行分装，包装袋采用市场上常见的聚乙烯塑料袋即可。分装过程中，保证称量的准确性。纤维的掺加如示意图：
1. Determine the mix proportion of each tray of hot material bin, calculate the quality of each tray of mixture, calculate the quality of fiber put into each tray of mixture according to the fiber consumption determined by the target mix proportion, and then pack the incoming fibers according to this quality. The packaging bags can be polyethylene plastic bags commonly used in the market. Ensure the accuracy of weighing during subpackaging. The addition of fiber is shown in the schematic diagram:
2、沥青混合料应按设计沥青用量进行试拌，试拌后取样进行马歇尔试验，并将其试验值与室内配合比试验结果进行比较，验证设计沥青用量的合理性，必要时可作适当调整：
2. The asphalt mixture shall be trial mixed according to the design asphalt dosage. After trial mixing, samples shall be taken for Marshall test, and the test value shall be compared with the indoor mix proportion test results to verify the rationality of the design asphalt dosage. If necessary, appropriate adjustments can be made:
3、确定适宜的拌和时间。对于普通的沥青混合料，间歇式拌和设备每盘拌和时间为30～60秒，的拌和时间为干拌25～30秒，湿拌30秒，以混合料拌和均匀，纤维和沥青混合料裹覆良好为准；
3. Determine the appropriate mixing time. For ordinary asphalt mixture, the mixing time of each batch of intermittent mixing equipment is 30-60 seconds. The recommended mixing time is 25-30 seconds for dry mixing and 30 seconds for wet mixing. The mixture shall be evenly mixed and the fiber and asphalt mixture shall be well coated;
4、确定适宜的拌和与出厂温度。沥青（均指石油沥青，下同）的加热温度宜为130℃～160℃，加热不宜超过6小时，且当天加热宜当天用完，不宜多次加热，以免老化砂石加热温度为140℃～170℃，矿分不加热。沥青混合料的出厂温度宜为130℃～160℃，当使用改性沥青时，应比上述温度的高限再提高10℃～15℃，纤维的掺加不必进行温度调整。
4. Determine appropriate mixing and factory temperature. The heating temperature of asphalt (all refer to petroleum asphalt, the same below) should be 130 ℃~160 ℃, and the heating should not exceed 6 hours. The heating should be used up on the same day, and should not be repeated, so as to avoid the heating temperature of aging sand and gravel is 140 ℃~170 ℃, and the mineral is not heated. The factory temperature of asphalt mixture should be 130 ℃~160 ℃. When modified asphalt is used, it should be 10 ℃~15 ℃ higher than the upper limit of the above temperature. It is unnecessary to adjust the temperature when adding fiber.
In addition, the asphalt concrete pavement with fiber generally does not form oil spots during the forming process, and the color appearance is basically the same as that of ordinary asphalt concrete pavement. More relevant content will come to our website Consult and understand!
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