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土壤固化劑在冷再生施工中的應(yīng)用
來源：http://kqj188.com/ 日期：2021-08-27 發(fā)布人：
我國公路通車路程中，二級及二級以下公路占多數(shù)，根據(jù)交通軸載組成及建造資金等要素的制約，一般用石灰、石灰粉煤灰等無機結(jié)合料加固土作為路面底層、底底層。但在實踐運用中，石灰安穩(wěn)土與二灰安穩(wěn)土的前期強度低、水安穩(wěn)性欠好、耐久性缺乏及施工工藝復(fù)雜等問題現(xiàn)已嚴重影響到公路建造質(zhì)量及運用年限。土壤加固的辦法有很多種，一般有物理、化學(xué)以及綜合加固法。盡管辦法很多，但是在很多辦法和工藝中，加固資料的挑選是為要害的，是能否到達土壤加固的意圖并節(jié)省出資和縮短工期是挑選的根據(jù)。
In China, class II and below highways account for the majority. According to the constraints of traffic axle load composition and construction funds, inorganic binders such as lime, lime fly ash and so on are generally used to strengthen the soil as the pavement bottom layer and bottom layer. However, in practice, the problems of low early strength, poor water stability, lack of durability and complex construction technology of lime stabilized soil and lime fly ash stabilized soil have seriously affected the highway construction quality and service life. There are many methods of soil reinforcement, generally including physical, chemical and comprehensive reinforcement methods. Although there are many methods, in many methods and processes, the selection of reinforcement data is the key, which is the basis of whether to reach the intention of soil reinforcement, save investment and shorten construction period.
土壤固化劑是一種綜合性加固新技能，它是在土壤中加入外加劑使之能與土壤發(fā)生一系列的物理以及化學(xué)變化，從而改變土壤的物理力學(xué)性質(zhì)，到達工程建造要求。由于土壤固化技能適用范圍廣、加固效果好、施工簡易方便，十分合適現(xiàn)在公路路基及基礎(chǔ)加固等實踐工程的需要。論文在對土壤固化劑的國內(nèi)外研討現(xiàn)狀進行分析的基礎(chǔ)上，選用室內(nèi)、外試驗對土壤固化劑的固化機理和路用功能進行了研討；根據(jù)合作比優(yōu)化規(guī)劃，提出了合作比方案。
Soil solidifying agent is a new comprehensive reinforcement skill. It adds additives to the soil to make it have a series of physical and chemical changes with the soil, so as to change the physical and mechanical properties of the soil and meet the requirements of engineering construction. Due to the wide application range, good reinforcement effect and simple and convenient construction of soil solidification skills, it is very suitable for the needs of practical projects such as highway subgrade and foundation reinforcement. Based on the analysis of the research status of soil curing agent at home and abroad, this paper selects indoor and outdoor tests to study the curing mechanism and road function of soil curing agent; According to the optimal planning of cooperation ratio, a cooperation ratio scheme is proposed.
在合作比情況下，測試了混合料的無側(cè)限飽水抗壓強度、水穩(wěn)性系數(shù)、凍安穩(wěn)系數(shù)、抗縮短功能、抗疲勞功能等路用功能；一起和石灰安穩(wěn)類資料進行了對比、分析；經(jīng)過實體工程對土壤固化劑在工程中的運用進行了驗證，一起提出了施工關(guān)鍵和質(zhì)量控制的要害問題。研討結(jié)果表明：土壤固化劑安穩(wěn)類資料能大幅度進步安穩(wěn)土前期強度，可以有用縮短工期，節(jié)省出資；土壤固化劑加固土具有較好的水穩(wěn)性、抗縮短功能及其他力學(xué)功能，可以進步公路運用質(zhì)量及延長運用壽命。土壤固化劑在冷再生施工中具有廣闊的運用遠景。
Under the condition of cooperative ratio, the road functions of the mixture such as unconfined saturated compressive strength, water stability coefficient, freeze-thaw stability coefficient, anti shortening function and anti fatigue function are tested; And lime stability data are compared and analyzed; The application of soil solidifying agent in the project is verified through the solid project, and the key problems of construction key and quality control are put forward together. The results show that the data of soil stabilizer can greatly improve the early strength of stable soil, effectively shorten the construction period and save investment; Soil curing agent has good water stability, anti shortening function and other mechanical functions, which can improve highway application quality and prolong service life. Soil solidifying agent has a broad application prospect in cold regeneration construction.
場地整平好后，依照規(guī)劃要求，用水散撒布車均勻的撒布水泥。水車內(nèi)裝有按一定份額溶解好的固化劑，冷再生機推著水車前行，一根水管連接與水車的水箱及冷再生的水泵，冷再生機均勻前行，水泵的流量由冷再生機的流量計控制，這樣冷再生機的拌和室內(nèi)土壤、水泥、固化劑、水就會均勻的拌和起來。
After the site is leveled, the cement shall be evenly distributed by water spreader according to the planning requirements. The water truck is equipped with curing agent dissolved according to a certain share. The cold regenerator pushes the water truck forward. A water pipe is connected with the water tank of the water truck and the cold regeneration water pump. The cold regenerator moves forward evenly. The flow of the water pump is controlled by the flowmeter of the cold regenerator, so that the soil, cement, curing agent and water in the mixing room of the cold regenerator will be mixed evenly.
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