首先進行素土攤鋪，按虛鋪系數預留沉降量。虛鋪系數一般通過試驗段確定。但一些老的施工員也可以根據經驗直接確定。

　　Firstly, lay the plain soil and reserve the settlement amount according to the virtual paving coefficient. The virtual paving coefficient is generally determined through experimental sections. But some experienced construction workers can also directly determine based on their experience.

　　素土攤鋪以后進行穩壓，穩壓要采用履帶式機械。穩壓的目的是為了讓土有一定的承載能力，拌合的時候不容易被推擠，從而保證拌合的均勻性。穩壓時最好采用尖履帶機械，比如說推土機，它履帶上的突出可以壓碎一些大的土塊，而挖掘機等平履帶則不行。

　　After laying the plain soil, stabilize the pressure using tracked machinery. The purpose of stabilizing pressure is to give the soil a certain bearing capacity, so that it is not easily pushed during mixing, thereby ensuring the uniformity of mixing. When stabilizing the pressure, it is best to use pointed track machinery, such as bulldozers, whose protruding tracks can crush some large soil blocks, while flat tracks such as excavators cannot.

　　素土整平

　　Plain soil leveling

　　穩壓以后進行素土整平。這一步至關重要。因為素土整平厚留的的預沉降量和平整度直接關系到施工質量。如果素土預留沉降量過大，則會導致灰劑量不夠，難以達到設計強度，過小的話則又達不到設計高程。平整度不夠則影響拌合深度和均勻性。拌合機下刀深度是固定的，如果某部分厚度過大則拌合的時候拌合不到底，導致產生夾層。

　　After stabilizing the pressure, level the plain soil. This step is crucial. The pre settlement amount and flatness left by the leveling of plain soil directly affect the construction quality. If the reserved settlement of the plain soil is too large, it will result in insufficient ash content, making it difficult to achieve the design strength. If it is too small, it will not reach the design elevation. Insufficient flatness affects the mixing depth and uniformity. The cutting depth of the mixer is fixed. If a certain part is too thick, it will not be fully mixed during mixing, resulting in the formation of interlayers.

　　素土整平以后如果土的含水量太小還需要進行補水。補水量宜稍大于最佳含水量。這樣在水泥拌合的時候可以盡量減少補水，縮短成活時間。

　　If the moisture content of the soil is too low after leveling, it needs to be replenished with water. The amount of water should be slightly higher than the optimal water content. This can minimize water replenishment and shorten the survival time during cement mixing.

　　接著就是進行水泥撒布。以前都是人工撒布袋裝水泥。撒布前先根據水泥使用量打好方格網。每個方格網里固定撒布幾袋，按理來說每個方格網里的水泥袋數越少越容易保證均勻性，但是結合拌合寬度、卸車便利性等因素，還要綜合考慮。方格網的袋數計算方法是：每平方米用灰量*方格網面積/50KG。現在一般都是水泥灑布車，直接設定好撒布數據就行了。

　　Next is to spread cement. Previously, cement was manually spread in bags. Before spreading, make a grid according to the amount of cement used. A fixed number of bags are scattered in each grid. In theory, the fewer cement bags in each grid, the easier it is to ensure uniformity. However, considering factors such as mixing width and unloading convenience, it is also necessary to consider comprehensively. The calculation method for the number of bags in a grid is: the amount of ash used per square meter multiplied by the grid area/50KG. Nowadays, cement sprinklers are usually used, and the spreading data can be set directly.

　　水泥撒布完開始進行拌合，一般是拌合兩遍。如果是粘性土拌合兩遍后可能還會大土塊多的情況，這時候應該再加拌合遍數。一般在夏季的時候還會出現水分流失過快，這時候就還需要進行二次補水。補水后再次進行拌合。

　　After the cement is spread, mixing begins, usually twice. If the sticky soil may still have large soil blocks after being mixed twice, it should be mixed multiple times. In summer, there is usually a rapid loss of water, which requires secondary hydration. Mix again after replenishing water.

　　灑水車補水

　　Watering truck water replenishment

　　拌合完后進行穩壓刮平。春季風大，經常會出現表層水分流失過快，導致上干下濕情況。這時候只需要在表層輕輕撒一遍水，保證刮平后表面可以碾壓結合就行，不再需要大量補水。現場含水量測定一般采用經驗確定---手握成團，落地開花就表明含水量接近最佳含水量了。

　　After mixing, stabilize the pressure and scrape it flat. In spring, the wind is strong, and there is often a rapid loss of surface moisture, resulting in a situation where the upper part is dry and the lower part is wet. At this point, it is only necessary to gently sprinkle water on the surface to ensure that the surface can be crushed and combined after scraping, without the need for a large amount of water replenishment. On site moisture content determination is generally based on experience - holding it in a ball and flowering on the ground indicates that the moisture content is close to the optimal moisture content.

　　碾壓成活

　　Crush and survive

　　刮平后就是碾壓了。碾壓的時候為保證橫坡，要遵循先低后高、先靜后動、先慢后快、輪跡重疊的原則。直線段從兩邊向中間，彎道超高段從內向外。輾軋的時候先滿滾碾壓一遍，然后1/2錯輪碾壓兩遍，再1/3錯輪碾壓一遍，最后大滾子收面。26噸的壓路機這樣碾壓，18-20cm厚的灰土一般都可以達到設計的壓實度要求。

　　After scraping flat, it is crushed. When rolling, in order to ensure the cross slope, the principles of low to high, static to dynamic, slow to fast, and overlapping wheel tracks should be followed. The straight section runs from both sides to the middle, while the curved section runs from the inside out. When rolling, first roll it full once, then roll it twice with 1/2 staggered wheels, then roll it once with 1/3 staggered wheels, and finally roll the surface with a large roller. A 26 ton roller can generally achieve the designed compaction degree for 18-20cm thick lime soil when rolled in this way.

　　最后就是要注意施工時間。一般按要求都是從拌合到碾壓成活時間不能超過水泥初凝時間，但實際施工中不能說做不到，只能說基本上很難做到。所以盡量使用初凝時間長的水泥。加緊施工流程。

　　Finally, it is important to pay attention to the construction time. Generally, it is required that the time from mixing to compaction should not exceed the initial setting time of cement, but in actual construction, it cannot be said that it cannot be achieved, it can only be said that it is basically difficult to achieve. So try to use cement with a long initial setting time. Intensify the construction process.

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