行業(yè)資訊
瀝青混凝土的使用特點(diǎn)以及如何施工
來(lái)源：http://3sj.org.cn/ 日期：2023-03-17
一，瀝青混凝土都有哪些特點(diǎn)?
1、 What are the characteristics of asphalt concrete?
1、瀝青路面具有高溫穩(wěn)定性;
1. Asphalt pavement has high temperature stability;
2、瀝青路面具有低溫抗裂性;
2. Asphalt pavement has low temperature crack resistance;
3、瀝青路面具有水穩(wěn)定性;
3. The asphalt pavement has water stability;
4、瀝青路面要具有耐疲勞性。
4. Asphalt pavement shall have fatigue resistance.
二，濟(jì)南瀝青混凝土如何進(jìn)行施工?
2、 How to construct asphalt concrete in Jinan?
半柔性路面的施工主要是母體瀝青混合料面層的鋪筑和水泥砂漿灌注是兩個(gè)主要的階段。因?yàn)橛捎诎肴嵝月访娴脑O(shè)計(jì)要求和設(shè)計(jì)方法跟一般瀝青路面的不一樣，而且其中涉及到水泥砂漿的灌注這一道工序，所以半柔性路面的施工方法也跟一般瀝青路面的施工方法較為不同。
The construction of semi flexible pavement mainly involves the paving of the parent asphalt mixture surface layer and the pouring of cement mortar, which are two main stages. Because the design requirements and methods of semi flexible pavements are different from those of ordinary asphalt pavements and involve the process of pouring cement mortar, the construction methods of semi flexible pavements are also relatively different from those of ordinary asphalt pavements.
目前根據(jù)半柔性路面混合料的特點(diǎn)，以及國(guó)外實(shí)施半柔性路面施工的經(jīng)驗(yàn)，半柔性路面的施工各過(guò)程的要點(diǎn)簡(jiǎn)述如下：
According to the characteristics of semi flexible pavement mixtures and the experience of implementing semi flexible pavement construction abroad, the key points of each process of semi flexible pavement construction are summarized as follows:
多孔的母體瀝青混合料路面的施工過(guò)程應(yīng)該包括以下五個(gè)方面：
The construction process of porous parent asphalt mixture pavement should include the following five aspects:
1、多孔母體瀝青混合料的拌制、運(yùn)輸、攤鋪和壓實(shí);
1. Mixing, transportation, paving and compaction of porous parent asphalt mixture;
多孔母體瀝青混合料鋪設(shè)的質(zhì)量，將直接影響到半柔性路面的使用性能，因此，在鋪設(shè)時(shí)應(yīng)該特別注意平整度等方面的質(zhì)量管理。另外，為了防止灌入的水泥砂漿滲透到多母體瀝青混合料鋪裝層以下的基層內(nèi)，在鋪設(shè)前一定要認(rèn)真的檢查基層的密實(shí)情況，必要的時(shí)候可加設(shè)隔離層。
The quality of porous matrix asphalt mixture paving will directly affect the performance of semi flexible pavement. Therefore, special attention should be paid to the quality management of smoothness and other aspects during paving. In addition, in order to prevent the injected cement mortar from penetrating into the base layer below the multi parent asphalt mixture pavement layer, it is necessary to carefully check the density of the base layer before laying, and if necessary, add an isolation layer.
2、水泥膠漿的制作：
2. Production of cement mortar:
在進(jìn)行加水之前應(yīng)該先將其它的材料拌和1～2min直至均勻，再加水拌和2～3min，攪拌直至材料均勻且一致，即可制作成水泥砂漿。如果要求達(dá)到某種景觀的效果，可以與礦粉一起加入一定成份的顏料(色粉)進(jìn)行拌和(在一些功能鋪裝中經(jīng)常采用這個(gè)辦法為路面著色，形成彩色路面)。
Before adding water, other materials should be mixed for 1-2 minutes until they are uniform, and then water should be added to mix for 2-3 minutes until the materials are uniform and consistent. Cement mortar can be produced. If it is required to achieve a certain landscape effect, it can be mixed with mineral powder by adding a certain component of pigment (toner) (this method is often used in some functional pavements to color the road surface and form a colored road surface).
3、水泥膠漿的灌入：
3. Filling of cement mortar:
鉆芯取樣，測(cè)定已經(jīng)鋪好的半柔性路面母體瀝青混合料的空隙率。以此來(lái)作為控制填充水泥砂漿的用量與技術(shù)指標(biāo)設(shè)計(jì)的參數(shù)，控制水泥砂漿的流動(dòng)度，以保證水泥砂漿的滲入。根據(jù)滲透的深度、母體開(kāi)級(jí)配瀝青混合料的空隙率以及砂漿損失率等，因素計(jì)算確定。砂漿的損失率一般為10%左右。
Drill core samples to determine the void content of the paved semi flexible pavement parent asphalt mixture. This is used as a parameter to control the amount of cement mortar to be filled and the design of technical indicators, and to control the fluidity of cement mortar to ensure its penetration. Factors such as the depth of penetration, the porosity of the parent open-graded asphalt mixture, and the mortar loss rate are calculated and determined. The loss rate of mortar is generally around 10%.
碾壓時(shí)，要保持碾壓輪濕潤(rùn)。當(dāng)大面積施工時(shí)，水泥砂漿的灌入可參照國(guó)外半柔性路面的施工方法，采用特制的水泥砂漿噴灑車(chē)進(jìn)行噴灑灌入。由于水泥砂漿噴灑車(chē)可以在噴灑的過(guò)程中邊噴灑邊攪拌，所以能夠保證水泥砂漿的流動(dòng)性和均勻性，從而防止水泥砂漿中砂的沉積，施工質(zhì)量會(huì)相對(duì)較高。
During rolling, keep the rolling wheel wet. When constructing in a large area, the pouring of cement mortar can refer to the construction methods of semi-flexible pavement in foreign countries, and a special cement mortar spraying truck can be used for spraying and pouring. As the cement mortar spraying truck can spray and mix during the spraying process, it can ensure the fluidity and uniformity of the cement mortar, thereby preventing the deposition of sand in the cement mortar, and the construction quality will be relatively high.
4、刮除多余的漿料：
4. Scrape off excess slurry:
在滲透完畢后，用路耙將殘余在瀝青路面表面上的水泥砂漿清除干凈，好能夠暴露出母體瀝青混凝土表面的凹凸不平，防止水泥砂漿一旦殘留在鋪裝面上，可能在一定程度上影響路面的外觀，降低瀝青路面的抗滑性能。如果對(duì)防滑和外觀有特殊的要求時(shí)，可以采用石英砂打磨除去剩余的水泥砂漿，這個(gè)需要根據(jù)材料以及施工的方法來(lái)對(duì)待。
After the penetration is completed, use a road rake to remove the cement mortar remaining on the asphalt pavement surface, so as to expose the unevenness of the parent asphalt concrete surface, and prevent the cement mortar from remaining on the pavement surface, which may affect the appearance of the pavement to a certain extent and reduce the skid resistance of the asphalt pavement. If there are special requirements for slip resistance and appearance, quartz sand can be used to polish and remove the remaining cement mortar, which needs to be treated according to the material and construction method.
也可在水泥漿體灌注完畢后，待初凝后將表面清理干凈，將緩凝劑噴灑在路表面上，后在內(nèi)部水泥漿體終凝以前將表面的水泥漿用水沖洗干凈，這樣即可以保證下層水泥漿體的強(qiáng)度，又能保證路表面色澤的均勻性。但是在此之前，禁止人員與車(chē)輛通行。
Alternatively, after the completion of the cement slurry pouring, the surface can be cleaned after the initial setting, and the retarder sprayed on the road surface. Then, before the final setting of the internal cement slurry, the surface cement slurry can be washed clean with water, which can not only ensure the strength of the underlying cement slurry, but also ensure the uniformity of the road surface color. However, until then, personnel and vehicles are prohibited from passing through.
5、養(yǎng)生
5. Health preservation
對(duì)滲透漿料要進(jìn)行一定時(shí)間的養(yǎng)生。當(dāng)施工的氣溫在30℃以下時(shí)，則不需要特殊的養(yǎng)生方式;而施工的氣溫在30℃以上時(shí)，則有必要使用塑料薄膜來(lái)進(jìn)行養(yǎng)生。養(yǎng)生時(shí)間應(yīng)該根據(jù)漿料的性質(zhì)而不同，通常在2～3d后便可開(kāi)放交通，如果在砂漿中使用早強(qiáng)水泥或摻加早強(qiáng)劑，則可能在數(shù)小時(shí)后開(kāi)放交通。待漿料硬化后即可開(kāi)放交通。
The permeable slurry shall be cured for a certain period of time. When the construction temperature is below 30 ℃, there is no need for special curing methods; When the construction temperature is above 30 ℃, it is necessary to use plastic film for curing. The curing time should vary depending on the nature of the grout, and traffic can usually be opened after 2 to 3 days. If early strength cement or early strength agent are used in the mortar, traffic may be opened after a few hours. After the slurry has hardened, traffic can be opened.
瀝青混凝土的使用特點(diǎn)以及如何施工相關(guān)事項(xiàng)就講解到這里了，您對(duì)此有怎樣的疑惑或者需求，可以隨時(shí)來(lái)咨詢(xún)我們http://3sj.org.cn！
This concludes the use characteristics of asphalt concrete and how to construct it. If you have any doubts or needs about this, please feel free to contact us http://3sj.org.cn ！
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