歡迎訪問山東途暢路橋工程有限公司官方網站!

冷再生機租賃

全國施工租賃熱線

全國施工租賃熱線

18264104888

您現在所在的位置 :首頁 - 新聞中心 > 行業資訊 >

行業資訊

information

全國施工租賃熱線

18264104888

山東途暢路橋工程有限公司

聯系電話:18264104888

公司地址:濟南市槐蔭區經一路273號群盛華城2號樓1-404

行業資訊

冷再生機材料與再生劑的選擇

來源:http://www.aluminiumcanisters.com/ 日期:2022-04-25
冷再生材料的性質與傳統道路材料不完全相同,因而對成形的要求也不完全相同。冷再生材料按再生劑大致可以區分為兩類:無機再生劑和瀝青再生劑,瀝青再生時往往加入少量水泥以提高其抗水損壞能力。常用的無機再生劑是水泥,其他還有二灰、水泥粉煤灰等。無機穩定冷再生一般按照傳統的半剛性材料進行成形和養生。常溫下進行重型擊實試驗或者振動擊實試驗,在20℃或者25℃下養生7天。通過含水量-強度關系確定含水量。瀝青穩定劑冷再生時的情況比較復雜,尚無統一方法。冷再生材料組成設計方法常見的方法是用擊實法確定液體量,用馬歇爾穩定度、干劈裂強度、濕劈裂強度中的一個或幾個達到確定瀝青用量。
The properties of cold recycled materials are different from those of traditional road materials, so the requirements for forming are also different. Cold recycled materials can be roughly divided into two categories according to regenerants: inorganic regenerants and asphalt regenerants. When asphalt is regenerated, a small amount of cement is often added to improve its water damage resistance. The commonly used inorganic regenerant is cement, and others include lime fly ash, cement fly ash, etc. Inorganic stable cold regeneration is generally formed and cured according to traditional semi-rigid materials. Carry out heavy compaction test or vibration compaction test at room temperature, and keep in good condition at 20 ℃ or 25 ℃ for 7 days. The water content is determined by the water content strength relationship. The situation of cold regeneration of asphalt stabilizer is complex, and there is no unified method. The Marshall method is a common method to determine the cold cracking strength or the dry cracking strength of recycled asphalt.
再生劑選擇
Regenerant selection
美國針對全國52個地方公路管理機構發出關于再生劑的問卷調查。46個回復,24個經常使用,13處地方使用部分**再生,4個全深*,7個兩者都用。24個地方用乳化瀝青,大部分采用高流動乳化瀝青。部分使用中凝或慢凝瀝青。石灰、粉煤灰、水泥分別在8/4/3個地方使用。南非在冷再生中普遍使用瀝青和水泥復合穩定,水泥用量一般選1%。認為水泥的加入可顯著改*冷再生材料水穩定性,提高材料力學性能尤其是早期強度。由于我國對使用半剛性基層經驗豐富,且很多再生路段是把再生材料作為基層使用,所以用水泥進行穩定較為常見,且用水泥進行穩定的時候,實驗方法也主要參考半剛性材料實驗。
The United States issued a questionnaire survey on regenerants to 52 Local highway management agencies across the country. 46 replies, 24 frequently used, 13 places used partial * * regeneration, 4 full depth *, 7 both. Emulsified asphalt is used in 24 places, and most of them use high flow emulsified asphalt. Medium setting or slow setting asphalt is partially used. Lime, fly ash and cement are used in 8 / 4 / 3 places respectively. Composite stabilization of asphalt and cement is widely used in cold regeneration in South Africa, and the amount of cement is generally 1%. It is considered that the addition of cement can significantly improve the water stability of cold recycled materials and improve the mechanical properties of materials, especially the early strength. Because China has rich experience in using semi-rigid base course, and many recycled sections use recycled materials as base course, it is common to stabilize with cement, and when stabilizing with cement, the experimental method mainly refers to the semi-rigid material experiment.
冷再生路面結構
Cold recycled pavement structure
國外的冷再生基本結構是:熱拌瀝青混合料層+冷再生層+舊有基層。舊有基層一般是砂礫基層。目前國內的冷再生道路其中使用較多的結構有熱拌瀝青混合料層+再生層+半剛性層和熱拌瀝青混合料層+再生層。隨著我國大量的路面進入維修期,路面冷再生技術會得到更廣泛的使用。文章總結了國內外再生的技術要點。國內對冷再生前評價尚無專門的評價方法,需要進一步研究;冷再生材料開始一般作為基層使用,目前逐步作為下面層使用;在我國冷再生施工中,水泥作為再生劑較多其實驗方法已經較為統一,主要的參考傳統的半剛性材料;而瀝青作為再生劑的冷再生實驗方法還不統一,需要進一步研究確定合理的實驗方法。
The basic structure of cold recycling abroad is: hot mix asphalt mixture layer + cold recycling layer + old base. The old base course is generally gravel base course. At present, the most commonly used structures of domestic cold recycled roads are hot mix asphalt mixture layer + recycled layer + semi-rigid layer and hot mix asphalt mixture layer + recycled layer. With a large number of pavements entering the maintenance period in China, pavement cold recycling technology will be more widely used. This paper summarizes the technical points of regeneration at home and abroad. There is no special evaluation method for pre cold regeneration evaluation in China, which needs further research; Cold recycled materials are generally used as the base layer at first, and are gradually used as the lower layer at present; In the cold recycling construction in China, cement is more used as a recycling agent, and its experimental method has been relatively unified, mainly referring to the traditional semi-rigid materials; However, the experimental method of cold regeneration of asphalt as regeneration agent is not unified, and further research is needed to determine a reasonable experimental method.
以上就是為大家介紹的有冷再生機租賃的詳細的介紹,希望對您有所幫助.如果您有什么疑問的話,歡迎聯系我們.我們將以專業的態度,為您提供服http://www.aluminiumcanisters.com
The above is a detailed introduction to the rental of cold regenerator. I hope it will be helpful to you If you have any questions, please contact us We will provide service for you with professional attitude http://www.aluminiumcanisters.com
  • 上一條:道路的冷再生什么意思?
  • 下一條:穩定土路拌機和路面冷再生機的區別在哪里?
  • 相關產品:

    亚洲国产精品一区二区手机

    <pre id="sppjn"></pre>