廢舊混凝土用作水泥穩定基層的實驗研究
發布時間:2018-11-26 13:04
【摘要】:隨著城市建設的發展,城市道路改建時產生的大量的廢棄混凝土塊的有效利用成了一個亟待解決的問題。結合宜昌市東山大道改建項目,將廢棄的混凝土面板加工形成再生集料用作水泥穩定碎石基層,達到節約資源和保護環境的目的。實驗分析了再生集料的顆粒級配、壓碎值、針片狀顆粒含量、表觀密度和吸水率等工程性質指標,同時對水泥穩定再生碎石的級配、最佳水泥摻量進行了設計,并對水泥穩定再生碎石的無側限抗壓強度指標進行了研究。研究表明,廢舊混凝土經加工形成的再生集料具有良好的路用性能,其顆粒級配、壓碎值以及主要指標均達到了路面基層材料的要求;摻3%、5%和7%水泥穩定再生集料7 d浸水抗壓強度均達到路面基層的要求,水泥穩定再生集料用作路面基層是可行的;摻3%水泥穩定的再生集料可以用在公路的底基層,摻5%及7%水泥穩定的再生集料可以分別用作路面下基層和上基層。
[Abstract]:With the development of urban construction, the effective utilization of a large number of abandoned concrete blocks in urban road reconstruction has become a problem to be solved urgently. Combined with the reconstruction project of Dongshan Avenue in Yichang City, the recycled aggregate is used as the cement stabilized crushed stone base to save resources and protect the environment. The engineering properties of recycled aggregate, such as particle gradation, crushing value, needle particle content, apparent density and water absorption rate, are analyzed experimentally. At the same time, the gradation and optimum cement content of cement stabilized recycled crushed stone are designed. The unconfined compressive strength index of cement stabilized recycled macadam was studied. The research shows that the recycled aggregate formed by the processing of waste concrete has good road performance, and its particle gradation, crushing value and main indexes all meet the requirements of pavement base material. Mixing 3% and 7% cement stabilized recycled aggregate for 7 days can meet the requirement of pavement base, and it is feasible to use cement stabilized recycled aggregate as pavement base. The recycled aggregate with 3% cement stabilization can be used in the base of highway, and the recycled aggregate with 5% and 7% cement can be used as the base and the upper base respectively.
【作者單位】: 三峽大學土木與建筑學院;宜昌市城市建設投資開發有限公司;湖北益通建設工程有限責任公司;
【分類號】:U414
本文編號:2358639
[Abstract]:With the development of urban construction, the effective utilization of a large number of abandoned concrete blocks in urban road reconstruction has become a problem to be solved urgently. Combined with the reconstruction project of Dongshan Avenue in Yichang City, the recycled aggregate is used as the cement stabilized crushed stone base to save resources and protect the environment. The engineering properties of recycled aggregate, such as particle gradation, crushing value, needle particle content, apparent density and water absorption rate, are analyzed experimentally. At the same time, the gradation and optimum cement content of cement stabilized recycled crushed stone are designed. The unconfined compressive strength index of cement stabilized recycled macadam was studied. The research shows that the recycled aggregate formed by the processing of waste concrete has good road performance, and its particle gradation, crushing value and main indexes all meet the requirements of pavement base material. Mixing 3% and 7% cement stabilized recycled aggregate for 7 days can meet the requirement of pavement base, and it is feasible to use cement stabilized recycled aggregate as pavement base. The recycled aggregate with 3% cement stabilization can be used in the base of highway, and the recycled aggregate with 5% and 7% cement can be used as the base and the upper base respectively.
【作者單位】: 三峽大學土木與建筑學院;宜昌市城市建設投資開發有限公司;湖北益通建設工程有限責任公司;
【分類號】:U414
【相似文獻】
相關期刊論文 前10條
1 李楊;;道路交通的廢舊混凝土再生利用研究[J];黑龍江交通科技;2011年03期
2 葉旅平;黎雯;;公路大修或“白改黑”工程中廢舊水泥混凝土再生利用的建議[J];建設機械技術與管理;2007年07期
3 李煒;;道路舊水泥混凝土的再生利用——S310線臨鳳段改善工程中的一點體會[J];科技經濟市場;2008年02期
4 王惠芬;秦守婉;肖昭然;;再生混凝土骨料在水穩材料中的應用初探[J];河南建材;2010年06期
5 楊朝旭;解建光;;堿渣、廢混凝土改性淤泥質土作為路基填土的可行性研究[J];公路工程;2010年01期
6 ;標準專利[J];商品混凝土;2010年10期
7 祝海燕;鞠鳳森;曹寶貴;;廢棄混凝土在道路工程中的應用[J];吉林建筑工程學院學報;2006年03期
8 張金喜;杜輝;楊榮俊;;廢棄混凝土再生利用的室內試驗[J];北京工業大學學報;2007年03期
9 劉學艷,劉彥龍;混凝土再生利用的試驗研究[J];森林工程;2002年06期
10 郭遠臣;孫可偉;;再生骨料基本特性及再生道路材料工程驗證(英文)[J];青島理工大學學報;2009年04期
相關會議論文 前1條
1 扈惠敏;李德章;柳炳康;朱朝暉;;舊水泥混凝土路面再生集料工程性質研究[A];安徽節能減排博士科技論壇論文集[C];2007年
,本文編號:2358639
本文鏈接:http://www.malleg.cn/kejilunwen/jiaotonggongchenglunwen/2358639.html

