行業(yè)資訊
土的含水量對(duì)壓路機(jī)壓實(shí)過(guò)程的影響
來(lái)源：http://huatts.com/ 日期：2023-01-20
壓路機(jī)作為道路施工中的主要機(jī)械工具，被廣泛的應(yīng)用在各種道路施工中。你知道土的含水量對(duì)壓路機(jī)壓實(shí)過(guò)程的影響怎樣嗎？下面濟(jì)南壓路機(jī)租賃廠家為您解說(shuō)。
As the main mechanical tool in road construction, road roller is widely used in various road construction. Do you know how the moisture content of soil affects the compaction process of the roller? Next, Jinan roller rental manufacturer will explain to you.
在壓實(shí)過(guò)程中，土或材料的含水量對(duì)所能達(dá)到的密實(shí)度起著非常大的作用。錘擊或突出的功需要克服土顆粒問(wèn)的內(nèi)摩擦阻力和粘結(jié)力，才能使土顆粒產(chǎn)生位移并互相靠近。土的內(nèi)摩擦阻力和粘結(jié)力是隨密實(shí)度而增加的。土的含水量小時(shí)，土顆粒間的內(nèi)摩擦阻力大，壓實(shí)到一定程度后，某一壓實(shí)功已不再能克服土的阻抗力，壓實(shí)所得的干密度小。
In the process of compaction, the water content of soil or material plays a very important role in the compactness that can be achieved. The work of hammering or rolling needs to overcome the internal friction resistance and cohesion between the soil particles, so that the soil particles can move and close to each other. The internal friction resistance and cohesion of soil increase with the compactness. When the water content of soil is small, the internal friction resistance between soil particles is large. After compaction to a certain degree, a certain compaction work can no longer overcome the resistance of soil, and the dry density obtained by compaction is small.
當(dāng)土的含水量逐漸增加時(shí)，水在土顆粒問(wèn)起著潤(rùn)滑作用，使土的內(nèi)摩擦阻力減小。因此同樣的壓實(shí)功可以得到較大的干密度。在這個(gè)過(guò)程中，單位土體中空氣的體積逐漸減小，而固體體積和水的體積則逐漸增加。當(dāng)土的含水量繼續(xù)增加到超過(guò)某一限度后。
When the water content of the soil increases gradually, the water plays a lubricating role between the soil particles, which reduces the internal friction resistance of the soil. Therefore, the same compaction work can obtain larger dry density. In this process, the volume of air in the unit soil gradually decreases, while the volume of solid and water gradually increases. When the water content of soil continues to increase beyond a certain limit.
雖然土的內(nèi)摩擦阻力還在減小，但單位土體中的空氣體積已減到小限度，而水的體積卻在不斷增加。由于水是不可壓縮的．因此在同樣的壓實(shí)功下，土的干密度反而逐漸減小。
Although the internal friction resistance of soil is still decreasing, the volume of air in unit soil has been reduced to a minimum, while the volume of water is increasing. Because water is incompressible, the dry density of soil decreases gradually under the same compaction work.
土的干密度與含水量的這樣一種緊密關(guān)系，就形成了駝峰形擊實(shí)曲線。因此。細(xì)顆粒七以及天然砂礫土、紅土砂礫、級(jí)配碎石、級(jí)配礫石、石灰穩(wěn)定土和水泥穩(wěn)定土等多種路面材料，都只有在一定的含水量條件下才能壓實(shí)到大干密度。
Such a close relationship between dry density and water content of soil forms a hump-shaped compaction curve. Therefore. Fine grain VII, natural gravel soil, laterite gravel, graded gravel, graded gravel, lime stabilized soil, cement stabilized soil and other pavement materials can be compacted to large dry density only under certain water content.
在施下現(xiàn)場(chǎng)，用某種壓路機(jī)突出含水量過(guò)小的土或級(jí)配集料，要達(dá)到高的壓實(shí)度是困難的；如土的含水量超過(guò)佳值時(shí)，要達(dá)到較大的壓實(shí)度同樣是困難的。因此，在特殊干旱和特殊潮濕地區(qū)，在無(wú)法或不能采取適宜措施的情況下，實(shí)際施工中往往不得小降低對(duì)壓實(shí)度的要求。更多相關(guān)內(nèi)容就來(lái)我們網(wǎng)站http://huatts.com咨詢吧！
At the construction site, it is difficult to achieve high compactness by rolling the soil or graded aggregate with too small water content with a certain roller; If the moisture content of the soil exceeds the optimum value, it is also difficult to achieve greater compaction. Therefore, in the special arid and humid areas, when appropriate measures cannot be taken or cannot be taken, the requirements for compactness should not be reduced in actual construction. Come to our website for more relevant content http://huatts.com Ask!
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