新型水泥路面冷再生机组再生水泥稳定碎石试验研究  

Experimental Study on Stable Crushed Gravel of Recycled Cement in a New Cement Pavement Cold Recycling Unit

作　　者：冉升财 孙文忠 许加响 王政凯 RAN Shengcai;SUN Wengzhong;XU Jiaxiang;WANG Zhengkai(Heze University,Heze 274015,Shandong,China;Xuzhou Ruima Heavy Industry Machinery Co.,Ltd.,Xuzhou 221000,Jiangsu,China;School of Mechanics and Civil Engineering,China University of Mining and Technology,Xuzhou 221116,Jiangsu,China)

机构地区：[1]菏泽学院,山东菏泽274015 [2]徐州锐马重工机械有限公司,江苏徐州221000 [3]中国矿业大学力学与土木工程学院,江苏徐州221116

出　　处：《广东交通职业技术学院学报》2024年第3期1-5,共5页Journal of Guangdong Communication Polytechnic

摘　　要：利用新型RH-S85旧水泥路面就地冷再生机组,采用铣刨、鄂破与反击破的综合方式完成废旧水泥混凝土面板二次破碎,解决了传统单次方法破碎颗粒度较大的问题。通过筛分级配、无侧限抗压强度等试验,研究了破碎再生集料的级配特征以及再生水泥稳定碎石混合料强度特性。结果表明:经RH-S85机组二次铣刨后的再生集料,大部分粒径级配处于规范的上下限范围内,但φ0.6 mm以下的细集料数量偏多,超出了级配上限,经调整后符合规范要求。随着水泥含量的增加,再生集料形成的水泥稳定碎石混合料的最大干密度呈线性增加,最佳含水量呈对数增加,无侧限抗压强度呈指数递增。控制适量水泥剂量情况下,利用RH-S85机组再生集料制备的再生水泥稳定碎石混合料强度符合各类交通条件的规范要求,可有效实现节约环保目的。RH-S85 old cement pavement cold recycling unit was adopted with the method of milling,jaw crushing and counterattack breaking to complete the secondary crushing of waste cement concrete panels,which effectively solves the problem of large particle size of traditional single crushing.The grading characteristics of crushed recycled aggregates and the strength characteristics of recycled cement-stabilized crushed stone mixture were studied by carrying out tests such as sieve grading and unconfined compressive strength.The results show that most of the particle size gradation of the recycled aggregate after the second milling of the RH-S85 old cement pavement cold recycling unit is within the upper and lower limits of the specification,but the number of fine aggregates below φ0.6 mm exceeds the upper limit of gradation.The cement-stabilized crushed stone mixture formed by recycled aggregates meet the requirements of the standard grading curve range after adjustment,and it increases the maximum dry density linearly with the increase of cement content,the optimal water content increases logarithmically,and the unconfined compressive strength increases exponentially.Under the condition of controlling the appropriate amount of cement,the strength of recycled cement stabilized gravel mixture prepared by using recycled aggregate of RH-S85 unit can meet the requirements of various traffic conditions,and can effectively achieve the purpose of saving environmental protection.

关 键 词：旧水泥路面 再生水泥稳定碎石 RH-S85机组 级配 无侧限抗压强度 

分 类 号：U416.2[交通运输工程—道路与铁道工程]