首先進(jìn)行素土攤鋪，按虛鋪系數(shù)預(yù)留沉降量。虛鋪系數(shù)一般通過(guò)試驗(yàn)段確定。但一些老的施工員也可以根據(jù)經(jīng)驗(yàn)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(jìn)行穩(wěn)壓，穩(wěn)壓要采用履帶式機(jī)械。穩(wěn)壓的目的是為了讓土有一定的承載能力，拌合的時(shí)候不容易被推擠，從而保證拌合的均勻性。穩(wěn)壓時(shí)最好采用尖履帶機(jī)械，比如說(shuō)推土機(jī)，它履帶上的突出可以壓碎一些大的土塊，而挖掘機(jī)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(wěn)壓以后進(jìn)行素土整平。這一步至關(guān)重要。因?yàn)樗赝琳胶窳舻牡念A(yù)沉降量和平整度直接關(guān)系到施工質(zhì)量。如果素土預(yù)留沉降量過(guò)大，則會(huì)導(dǎo)致灰劑量不夠，難以達(dá)到設(shè)計(jì)強(qiáng)度，過(guò)小的話(huà)則又達(dá)不到設(shè)計(jì)高程。平整度不夠則影響拌合深度和均勻性。拌合機(jī)下刀深度是固定的，如果某部分厚度過(guò)大則拌合的時(shí)候拌合不到底，導(dǎo)致產(chǎn)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(jìn)行補(bǔ)水。補(bǔ)水量宜稍大于最佳含水量。這樣在水泥拌合的時(shí)候可以盡量減少補(bǔ)水，縮短成活時(shí)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(jìn)行水泥撒布。以前都是人工撒布袋裝水泥。撒布前先根據(jù)水泥使用量打好方格網(wǎng)。每個(gè)方格網(wǎng)里固定撒布幾袋，按理來(lái)說(shuō)每個(gè)方格網(wǎng)里的水泥袋數(shù)越少越容易保證均勻性，但是結(jié)合拌合寬度、卸車(chē)便利性等因素，還要綜合考慮。方格網(wǎng)的袋數(shù)計(jì)算方法是：每平方米用灰量*方格網(wǎng)面積/50KG?，F(xiàn)在一般都是水泥灑布車(chē)，直接設(shè)定好撒布數(shù)據(jù)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(kāi)始進(jìn)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(huì)大土塊多的情況，這時(shí)候應(yīng)該再加拌合遍數(shù)。一般在夏季的時(shí)候還會(huì)出現(xiàn)水分流失過(guò)快，這時(shí)候就還需要進(jìn)行二次補(bǔ)水。補(bǔ)水后再次進(jìn)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(chē)補(bǔ)水

　　Watering truck water replenishment

　　拌合完后進(jìn)行穩(wěn)壓刮平。春季風(fēng)大，經(jīng)常會(huì)出現(xiàn)表層水分流失過(guò)快，導(dǎo)致上干下濕情況。這時(shí)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(jié)合就行，不再需要大量補(bǔ)水。現(xiàn)場(chǎng)含水量測(cè)定一般采用經(jīng)驗(yàn)確定---手握成團(tuán)，落地開(kāi)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(shí)候?yàn)楸ＷC橫坡，要遵循先低后高、先靜后動(dòng)、先慢后快、輪跡重疊的原則。直線(xiàn)段從兩邊向中間，彎道超高段從內(nèi)向外。輾軋的時(shí)候先滿(mǎn)滾碾壓一遍，然后1/2錯(cuò)輪碾壓兩遍，再1/3錯(cuò)輪碾壓一遍，最后大滾子收面。26噸的壓路機(jī)這樣碾壓，18-20cm厚的灰土一般都可以達(dá)到設(shè)計(jì)的壓實(shí)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(shí)間。一般按要求都是從拌合到碾壓成活時(shí)間不能超過(guò)水泥初凝時(shí)間，但實(shí)際施工中不能說(shuō)做不到，只能說(shuō)基本上很難做到。所以盡量使用初凝時(shí)間長(zhǎng)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.

　　本文由  水泥撒布車(chē)租賃  友情奉獻(xiàn).更多有關(guān)的知識(shí)請(qǐng)點(diǎn)擊  http://m.622410.cn/   真誠(chéng)的態(tài)度.為您提供為全面的服務(wù).更多有關(guān)的知識(shí)我們將會(huì)陸續(xù)向大家奉獻(xiàn).敬請(qǐng)期待.

　　This article is a friendly contribution from the rental of cement spreading trucks For more related knowledge, please click http://m.622410.cn/ Sincere attitude To provide you with comprehensive services We will gradually contribute more relevant knowledge to everyone Coming soon.