振动法水泥稳定破碎砾石基层及工程应用研究
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摘要
采用振动试验方法(VTM)设计水泥稳定破碎砾石(CSG)并进行工程应用。结果表明:破碎砾石的压碎值为10.7%,满足路面基层的使用要求;当水泥剂量为3.5%时,振动法CSG的无侧限抗压强度代表值达到6.9 MPa;比起传统的设计方法,VTM可降低水泥剂量并提高力学强度;工程实践表明,振动法CSG基层的使用效果良好。
Herein vibration test method(VTM) was used for the design of cement stabilized gravel(CSG),and then its engineering application was studied.The result shows that,the crushing value of the gravel is 10.7 %,meeting the requirement of road basement;when the cement content is 3.5 %,the typical value of unconfined compressive strength of the VTM-CSG reaches 6.9 MPa;compared to the traditional design method,VTM allows to reduce cement content and may enhance mechanical strength.The engineering practice has demonstrated that the VTM-CSG base may give a good use effect.
Herein vibration test method(VTM) was used for the design of cement stabilized gravel(CSG),and then its engineering application was studied.The result shows that,the crushing value of the gravel is 10.7 %,meeting the requirement of road basement;when the cement content is 3.5 %,the typical value of unconfined compressive strength of the VTM-CSG reaches 6.9 MPa;compared to the traditional design method,VTM allows to reduce cement content and may enhance mechanical strength.The engineering practice has demonstrated that the VTM-CSG base may give a good use effect.
引文
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[2]蔡飞.水泥综合稳定砂砾基层材料抗裂性能研究[D].西安:长安大学,2003.CAI F.Study on anti-cracking property of multi-stabilized gravel base[D].Xi’an:Chang’an University,2003.
[3]庹昱.干旱寒冷地区水泥稳定砂砾基层质量保障技术[D].西安:长安大学,2007.TUO Y.Study on technical measure to ensure quality of cement-stabilized gravel base in drought and cold region[D].Xi’an:Chang’an University,2007.
[4]姜斌.抗裂性水泥稳定砂砾基层材料的试验研究[D].哈尔滨:东北林业大学,2008.JIANG B.Experimental research on crack resistance cement-stabilized sand gravel base material[D].Harbin:Northeast Forestry University,2008.
[5]陈亮亮.水泥稳定砂砾材料标准击实方法研究[D].哈尔滨:哈尔滨工业大学,2010.CHEN L L.Researech on standard compaction method for cement stabilized sand gravel[D].Harbin:Harbin Institute of Technology,2010.
[6]马骉,王秉纲.多年冻土地区湿度对水泥稳定砂砾强度的影响[J].长安大学学报(自然科学版),2006,26(5):13-16.MA B,WANG B G.Influence of humidity on strength of cement-stabilizedgravel in permafrost area[J].Journal of Chang’an University(Natural Science),2006,26(5):13-16.
[7]马银华,易志坚,杨庆国.柔性纤维对水泥稳定粒料基层的阻裂增韧机理分析[J].重庆交通大学学报(自然科学版),2007,26(5):84-86.MA Y H,YI Z J,YANG Q G.Analysis of anti-cracking and tenacity increasing mechanism of flexible fiber cement-stabilized material semi-rigid base[J].Journal of Chongqing Jiaotong University(Natural Science),2007,26(5):84-86.
[8]JIANG Y J,FAN LF.An investigation of mechanical behavior of cementstabilized crushed rock material using different compaction methods[J].Construction and Building Materials,2013,48:508-515.
[9]蒋应军,王富玉,刘斌.水泥稳定碎石强度特性的试验研究[J].武汉理工大学学报,2009,31(15):52-57.JIANG Y J,WANG F Y,LIU B.Research on strength properties of cement stabilization of crushed aggregate[J].Journal of Wuhan University of Technology,2009,31(15):52-57.
[10]李頔,蒋应军,任皎龙.基于振动法的抗疲劳断裂水泥稳定碎石强度标准[J].建筑材料学报,2013,16(2):276-283.LI D,JIANG Y J,REN J L.Strength standard of anti fatigue-fracture cement stabilized macadam based on vibration testing method[J].Journal of Building Materials,2013,16(2):276-283.
[11]JI X P,JIANG Y J,LIU Y J.Evaluation of the mechanical behaviors of cement-stabilized cold recycled mixtures produced by vertical vibration compaction method[J].Materials and Structures,2016,49(6):2257-2270.
[12]JTG D50-2006公路沥青路面设计规范[S].北京:人民交通出版社,2007.JTG D50-2006 Specifications for Design of Highway Asphalt Pavement[S].Beijing:China Communications Press,2007.
[13]DB 61/T 529-2011垂直振动法水泥稳定碎石设计施工技术规范[S].北京:人民交通出版社,2012.DB 61/T 529-2011 Technical Specification for Design and Construction of Cement Stabilized Crushed Stone by Vertical Vibration Method[S].Beijing:China Communications Press,2012.
[14]JTG E51-2009公路工程无机结合料稳定材料试验规程[S].北京:人民交通出版社,2009.JTG E51-2009 Test Methods of Materials Stabilized with Inorganic Binders for Highway Engineerin[S].Beijing:China Communications Press,2009.
[15]JTG/T F20-2015公路路面基层施工技术细则[S].北京:人民交通出版社,2015.JTG/T F20-2015 Technical Guidelines for Construction of Highway Roadbases[S].Beijing:China Communications Press,2015.