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水泥撒布车租赁:施工中如何控制水泥用量?
来源:https://www.sddhfjx.com/ 日期:2025-12-03

  首先进行素土摊铺,按虚铺系数预留沉降量。虚铺系数一般通过试验段确定。但一些老的施工员也可以根据经验直接确定。

  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.base64_image

  素土摊铺以后进行稳压,稳压要采用履带式机械。稳压的目的是为了让土有一定的承载能力,拌合的时候不容易被推挤,从而保证拌合的均匀性。稳压时最好采用尖履带机械,比如说推土机,它履带上的突出可以压碎一些大的土块,而挖掘机等平履带则不行。

  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

  稳压以后进行素土整平。这一步至关重要。因为素土整平厚留的的预沉降量和平整度直接关系到施工质量。如果素土预留沉降量过大,则会导致灰剂量不够,难以达到设计强度,过小的话则又达不到设计高程。平整度不够则影响拌合深度和均匀性。拌合机下刀深度是固定的,如果某部分厚度过大则拌合的时候拌合不到底,导致产生夹层。

  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还需要进行补水。补水量宜稍大于最佳含水量。这样在水泥拌合的时候可以尽量减少补水,缩短成活时间。

  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.

  接着就是进行水泥撒布。以前都是人工撒布袋装水泥。撒布前先根据水泥使用量打好方格网。每个方格网里固定撒布几袋,按理来说每个方格网里的水泥袋数越少越容易保证均匀性,但是结合拌合宽度、卸车便利性等因素,还要综合考虑。方格网的袋数计算方法是:每平方米用灰量*方格网面积/50KG。现在一般都是水泥洒布车,直接设定好撒布数据就行了。

  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.

  水泥撒布完开始进行拌合,一般是拌合两遍。如果是粘性土拌合两遍后可能还会大土块多的情况,这时候应该再加拌合遍数。一般在夏季的时候还会出现水分流失过快,这时候就还需要进行二次补水。补水后再次进行拌合。

  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.

  洒水车补水

  Watering truck water replenishment

  拌合完后进行稳压刮平。春季风大,经常会出现表层水分流失过快,导致上干下湿情况。这时候只需要在表层轻轻撒一遍水,保证刮平后表面可以碾压结合就行,不再需要大量补水。现场含水量测定一般采用经验确定---手握成团,落地开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.

  碾压成活

  Crush and survive

  刮平后就是碾压了。碾压的时候为保证横坡,要遵循先低后高、先静后动、先慢后快、轮迹重叠的原则。直线段从两边向中间,弯道超高段从内向外。辗轧的时候先满滚碾压一遍,然后1/2错轮碾压两遍,再1/3错轮碾压一遍,最后大滚子收面。26吨的压路机这样碾压,18-20cm厚的灰土一般都可以达到设计的压实度要求。

  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时间。一般按要求都是从拌合到碾压成活时间不能超过水泥初凝时间,但实际施工中不能说做不到,只能说基本上很难做到。所以尽量使用初凝时间长的水泥。加紧施工流程。

  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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