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瀝青碎石形成離析帶的可能原因

來(lái)源：http://shyy66.com/ 日期：2022-09-15

瀝青在路面運(yùn)用中常見(jiàn)問(wèn)題有哪些呢，下面濟(jì)南瀝青混凝土廠家為大家?guī)?lái)瀝青碎石形成離析帶的可能原因介紹以供參考。

What are the common problems of asphalt in pavement application? Next, Jinan asphalt concrete manufacturer will introduce the possible causes of asphalt macadam segregation zone for reference.

1.瀝青碎石形成離析帶的可能原因

1. Possible causes of segregation zone formed by asphalt macadam

（1）瀝青混合料從貯料罐向運(yùn)輸車(chē)?yán)镙斔蜁r(shí)，由于高度原因，大骨料滾落在車(chē)廂附近，形成粗集料一次集中。

(1) When the asphalt mixture is transported from the storage tank to the transport vehicle, due to the height, the large aggregate rolls down near the carriage, forming a single concentration of coarse aggregate.

（2）運(yùn)輸車(chē)?yán)锏幕旌狭闲断驍備仚C(jī)時(shí)，大骨料滾落在攤鋪機(jī)半廂附近，形成粗集料的二次集中。

(2) When the mixture in the transport vehicle is discharged to the paver, the large aggregate rolls down near the half car of the paver, forming the secondary concentration of coarse aggregate.

（3）攤鋪機(jī)送料器在送料過(guò)程中，先將中間集料送于布料器，剩余粗集料留存在料斗中，攤鋪機(jī)收斗時(shí)，形成粗集料的第三次集中。

(3) During the feeding process of the paver feeder, the intermediate aggregate is first sent to the distributor, and the remaining coarse aggregate is stored in the hopper. When the paver collects the hopper, the third concentration of coarse aggregate is formed.

2.瀝青碎石離析的危害

2. Hazards of asphalt macadam segregation

（1）瀝青碎石粗集料一旦形成集中，在碾壓過(guò)程中，集料非常容易被壓碎，骨料表面積增大，改變了原設(shè)計(jì)的路面配合比，油料偏少，造成集料碾壓成型后松散，破壞路面結(jié)構(gòu)，影響路面強(qiáng)度、行車(chē)安全和行車(chē)效果以及道路使用壽命。

(1) Once the coarse aggregate of asphalt macadam is concentrated, the aggregate is very easy to be crushed during the rolling process, and the aggregate surface area increases, which changes the original design pavement mix ratio. The oil is too small, causing the aggregate to become loose after rolling, damaging the pavement structure, affecting the pavement strength, driving safety, driving effect and road service life.

（2）粗集料集中，局部密實(shí)度差，孔隙率高，容易在路面形成積水，影響路面質(zhì)量。

(2) Coarse aggregate is concentrated, the local compactness is poor, and the porosity is high. It is easy to form ponding on the pavement, which affects the pavement quality.

（3）粗集料集中，影響路面平整度及路面外觀美感。

(3) The coarse aggregate is concentrated, which affects the pavement evenness and aesthetic appearance.
濟(jì)南瀝青混凝土

3.解決瀝青碎石形成離析帶方法

3. Methods to solve the segregation zone formed by asphalt macadam

（1）從運(yùn)輸車(chē)輛方面來(lái)解決

(1) Solve the problem in terms of transport vehicles

從拌和機(jī)貯料罐向運(yùn)料車(chē)上卸料時(shí)，分三層放料，即每卸一斗混合料，汽車(chē)挪動(dòng)一個(gè)位置。等一層放完后，再逐次進(jìn)行二、三層放料，從而減少粗集料的集中。

When discharging materials from the mixer storage tank to the truck, the materials shall be discharged in three layers, that is, the truck shall move one position for each bucket of mixture. After the first layer is finished, the second and third layers shall be placed one by one to reduce the concentration of coarse aggregate.

施工過(guò)程中攤鋪機(jī)前有運(yùn)料車(chē)在等候卸料，即攤鋪瀝青混合料運(yùn)輸車(chē)的運(yùn)量較攤輔速度有所富裕。

During the construction, there is a truck waiting for unloading in front of the paver, that is, the traffic volume of the truck for paving asphalt mixture is richer than the auxiliary paving speed.

（2）從攤鋪機(jī)本身操作方面來(lái)解決

(2) Solve the problem from the operation of paver itself

在攤鋪機(jī)螺旋二分之一處，邊端裝反向螺旋葉片；控制布料器處于中擋或高擋位置；控制適宜的送料倉(cāng)口開(kāi)度；均勻操作送料器和布料器；攤鋪機(jī)攤鋪一車(chē)料將完時(shí)，控制攤鋪機(jī)速度，關(guān)閉送料器，等下車(chē)料倒入后再進(jìn)行均勻送料和布料；在鋪筑過(guò)程中保持?jǐn)備仚C(jī)布料器不停轉(zhuǎn)動(dòng)，攤鋪機(jī)兩側(cè)保持有不少于送料器高度三分之二混合料。

Install reverse spiral blades at the side end of the one half of the auger of the paver; Control the auger in the middle or high gear position; Control the appropriate opening of feeding silo; Operate the feeder and auger evenly; When the paver has finished paving a truck of materials, control the speed of the paver, turn off the feeder, and feed and distribute materials evenly after the materials are poured in; Keep the spreader of the paver rotating constantly during the paving process, and keep the mixture at least two-thirds of the height of the feeder on both sides of the paver.

（3）從混合料本身來(lái)解決

(3) Solve the problem from the mixture itself

減少混合料粒徑大小懸差。控制瀝青用量，使之偏高于設(shè)計(jì)用量。

Reduce the suspension of mixture particle size. Control the asphalt dosage to make it higher than the design dosage.

瀝青碎石形成離析帶的可能原因以及解決的相關(guān)內(nèi)容就講解到這里了，您對(duì)此有什么想法來(lái)我們網(wǎng)站http://shyy66.com進(jìn)行分享。

The possible reasons for the formation of segregation zone of asphalt macadam and the related solutions are explained here. Please come to our website for your ideas http://shyy66.com Share.

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