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行業(yè)資訊

冷再生機(jī)在公路養(yǎng)護(hù)中作用

來(lái)源：http://www.lzqdw.com/ 日期：2022-08-15

在對(duì)道路進(jìn)行養(yǎng)護(hù)工作時(shí)，我們需要對(duì)原先的道路進(jìn)行調(diào)查，以確保在使用冷再生機(jī)進(jìn)行道路養(yǎng)護(hù)工作的順利進(jìn)行。

When carrying out road maintenance, we need to investigate the original road to ensure the smooth progress of road maintenance with cold recycling machine.

1、舊路調(diào)查

1. Old road survey

冷再生技術(shù)適用于大部分瀝青混凝土舊路大修與改建工程。先需要對(duì)舊路進(jìn)行詳細(xì)的調(diào)查，主要包括以下內(nèi)容:

The cold recycling technology is suitable for the overhaul and reconstruction of most old asphalt concrete roads. First, a detailed survey of the old road is required, mainly including the following contents:

1、對(duì)舊路結(jié)構(gòu)和歷年修補(bǔ)改造情況進(jìn)行調(diào)查，了解路面病害情況，包括變形、裂縫、邊緣破壞等。

1. Investigate the old road structure and the repair and reconstruction over the years to understand the pavement diseases, including deformation, cracks, edge damage, etc.

2、對(duì)舊路進(jìn)行彎沉檢測(cè)，以分析舊路的破壞狀況和承載能力，確定重復(fù)利用舊路基層進(jìn)行冷再生的必要性。

2. The deflection of the old road is detected to analyze the damage condition and bearing capacity of the old road, and determine the necessity of reusing the old road base for cold regeneration.

3、對(duì)舊路結(jié)構(gòu)層進(jìn)行鉆芯取樣，以確定舊路結(jié)構(gòu)層的厚度及各層材料的工程特性。

3. Core drilling and sampling shall be conducted for the structural layer of the old road to determine the thickness of the structural layer of the old road and the engineering characteristics of the materials of each layer.

2、材料組成設(shè)計(jì)

2. Material composition design

通過(guò)試驗(yàn)分析，我們認(rèn)為冷再生層的性能與混合料級(jí)配有著顯著而密切的關(guān)系。如若舊料中4.75mm以上的粒料含量過(guò)低(<40%)，則需加入部分級(jí)配的新骨料；若舊料中4.75mm 以上的粒料含量過(guò)高(>80%)，則會(huì)導(dǎo)致細(xì)料(特別是<0.6mm 的集料)對(duì)空隙的填充不足，混合料強(qiáng)度偏低，則需在冷再生混合料中加入部分級(jí)配的細(xì)集料，以便形成具有良好級(jí)配的骨架密實(shí)結(jié)構(gòu)，提高混合料的強(qiáng)度。但這無(wú)疑都會(huì)提高冷再生結(jié)構(gòu)層的造價(jià)，需與新建的結(jié)構(gòu)層進(jìn)行經(jīng)濟(jì)比較以后再實(shí)施。

Through the test and analysis, we believe that the performance of the cold recycled layer has a significant and close relationship with the mixture gradation. If the content of aggregate above 4.75mm in the old material is too low (< 40%), it is necessary to add some graded new aggregate; If the content of granular materials above 4.75mm in the old materials is too high (> 80%), it will lead to insufficient filling of voids by fine materials (especially aggregates < 0.6mm) and low strength of the mixture. Therefore, it is necessary to add some graded fine aggregates to the cold recycled mixture to form a skeleton dense structure with good gradation and improve the strength of the mixture. However, this will undoubtedly increase the cost of the cold regeneration structural layer, which will be implemented after economic comparison with the new structural layer.

以上就是為大家介紹的有關(guān)冷再生機(jī)租賃的詳細(xì)的介紹,希望對(duì)您有所幫助.如果您有什么疑問的話,歡迎聯(lián)系我們.我們將以專業(yè)的態(tài)度,為您提供服務(wù)https://www.lzqdw.com

The above is the detailed introduction of the cold regenerator rental for you. I hope it will help you. If you have any questions, please contact us. We will provide you with services with a professional attitude http://www.lzqdw.com

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