地沟油对水泥稳定碎石材料路用性能的影响研究
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摘要
本文分别在粗集料和全部集料中添加地沟油,再拌制得到粗集料拌油和全集料拌油两种水泥稳定碎石;并进行不同混合料的抗压强度试验、回弹模量试验和弯拉疲劳试验等路用性能试验。试验结果表明:粗集料拌油的7d无侧限抗压强度满足规范要求,全部集料拌油仅符合二级以下公路的底基层强度标准,粗集料拌油和全部集料拌油强度后期的增长幅度明显大于普通混合料;两种拌油混合料的弯拉强度有所降低,但粗集料拌油破坏时挠度提高了87.5%;与普通混合料相比,粗集料拌油和全部集料拌油的抗压回弹模量分别降低了23.7%和27.8%,故地沟油增柔效果明显;粗集料拌油混合料的干缩系数小于普通混合料,收缩开裂风险降低,抗疲劳性能优于普通混合料,但对荷载变化的敏感程度比普通混合料大。可见,粗集料拌油水泥稳定碎石可用于半刚性基层。
In this paper, two kinds of cement stabilized macadam, waste cooking oil modified coarse aggregate and waste cooking oil modified all aggregates, were obtained by adding waste cooking oil into coarse aggregate and all aggregates, respectively. Road performance experiment including compression strength test, resilient modulus test and flexural fatigue test of different mixtures were carried out. Experimental results show that the unconfined compression strength of coarse aggregate mixed with oil for 7 days meets the requirements of the specification, while all aggregates mixed with oil are only accord with below the second grade of strength standard of subbase. The later compression strength of these two modified macadams increase more obviously than that of control mixture. The flexural tensile strength of waste cooking oil modified macadam declines slightly, but the deflection of cooking oil modified coarse aggregate increases by 87.5%. The compression test waste cooking oil modified coarse aggregate and waste cooking oil modified all aggregates declined by 23.7% and 27.8%, respectively. This means the waste cooking oil increase the flexibility of the macadam. The coefficient of shrinkage of waste cooking oil modified coarse aggregate smaller and it is not easy to shrink and crack. And the fatigue property of waste cooking oil modified coarse aggregate is better. But it is more sensitive to load. Therefore, waste cooking oil modified coarse aggregate is preferable for semi-rigid base.
In this paper, two kinds of cement stabilized macadam, waste cooking oil modified coarse aggregate and waste cooking oil modified all aggregates, were obtained by adding waste cooking oil into coarse aggregate and all aggregates, respectively. Road performance experiment including compression strength test, resilient modulus test and flexural fatigue test of different mixtures were carried out. Experimental results show that the unconfined compression strength of coarse aggregate mixed with oil for 7 days meets the requirements of the specification, while all aggregates mixed with oil are only accord with below the second grade of strength standard of subbase. The later compression strength of these two modified macadams increase more obviously than that of control mixture. The flexural tensile strength of waste cooking oil modified macadam declines slightly, but the deflection of cooking oil modified coarse aggregate increases by 87.5%. The compression test waste cooking oil modified coarse aggregate and waste cooking oil modified all aggregates declined by 23.7% and 27.8%, respectively. This means the waste cooking oil increase the flexibility of the macadam. The coefficient of shrinkage of waste cooking oil modified coarse aggregate smaller and it is not easy to shrink and crack. And the fatigue property of waste cooking oil modified coarse aggregate is better. But it is more sensitive to load. Therefore, waste cooking oil modified coarse aggregate is preferable for semi-rigid base.
引文
[1] 沙庆林.高速公路沥青路面早期破坏现象及预防[M].北京:人民交通出版社,2001 (SHA Qinglin.Early damage and prevention of freeway asphalt pavement[M].Beijing:China Communication Press,2001 (in Chinese))
[2] ?enyur G,Erer D M.Cement stabilization of crushed aggregate:Analysis of the properties related to curing time [J].International Journal of Rock Mechanics & Mining Sciences & Geomechanics Abstracts,1990,10(3):315-321.
[3] 敖道朝.低剂量水泥稳定碎石在渝湛高速公路中的应用[J].公路,2006(7):318-321 (AO Daochao.Application of low content stabilized gravel to Yu-Zhan expressway [J].Highway,2006(7):318-321 (in Chinese))
[4] 高俊启,季天剑.橡胶沥青应力吸收层力学与疲劳性能研究[J].实验力学,2009,24(4):341-346 (GAO Junqi,JI Tianjian.Study of mechanical and fatigue properties for stress absorbing membrane interlayer in asphalt rubber[J].Journal of Experimental Mechanics,2009,24(4):341-346 (in Chinese))
[5] 贾侃.半刚性基层材料的疲劳特性研究[D].长安大学,2008 (JIA Kan.Study on the fatigue performance of semi-rigid base course materials[D].Chang′an University,2008 (in Chinese))
[6] 符佳,谈至明,杨吴礼,等.乳化沥青水泥稳定碎石的力学强度试验研究[J].公路,2014(7):318-323 (FU Jia,TAN Zhimiug,YANG Wuli,et al.Test and research on mechanical strength of emulsified asphalt cement-stabilized macadam [J].Highway,2014(7):318-323 (in Chinese))
[7] 程培峰,于铭泽.掺玄武岩纤维水泥稳定碎石温缩抗裂性能试验研究[J].中外公路,2013(6):234-238 (CHENG Peifeng,YU Mingze.Experimental study on temperature shrinkage and crack resistance of cement stabilized macadam mixed with basalt fiber[J].Journal of China & Foreign Highway,2013(6):234-238 (in Chinese))
[8] 肖鹏,李平.掺SBR胶乳与聚丙烯纤维水泥稳定碎石性能比较[J].建筑材料学报,2010(6):817-820 (XIAO Peng,LI Ping.Contrastive analysis of performance of cement-stabilized aggregate modified with SBR emulsion and polypropylene fibers [J].Journal of Building Materials,2010(6):817-820 (in Chinese))
[9] JTG E42-2005,公路工程集料试验规程[S].北京:人民交通出版社,2005 (JTG E42-2005,Test methods of aggregate for highway engineering[S].Beijing:China Communications Press,2005 (in Chinese))
[10] 周启伟,叶伟,杨波,等.水泥稳定碎石低温强度与干缩特性分析[J].硅酸盐通报,2016,35(3):948-952 (ZHOU Qiwei,YE Wei,YANG Bo,et al.Analysis of low temperature strength and drying shrinkage characteristics of cement stabilized macadam[J].Bulletin of the Chiness Ceramic Society,2016,35(3):948-952 (in Chinese))
[11] JTG/T F20-2015,公路路面基层施工技术细则[S].北京:人民交通出版社股份有限公司,2015 (JTG/T F20-2015,Technical guidelines for construction of highway roadbases[S].Beijing:China Communications Press Co.,Ltd.,2015 (in Chinese))
[12] GB 175-2007,通用硅酸盐水泥[S].北京:中国国家标准化管理委员会,2007 (GB 175-2007,Common oortland cement[S].Beijing:Standardization Administration of the People′s Republic of China,2007 (in Chinese))
[13] GB 2716-2005,食用植物油标准[S].北京:中国国家标准化管理委员会,2005 (GB 2716-2005,Hygienic standard for edible vegetable oil[S].Beijing:Standardization Administration of the People′s Republic of China,2005 (in Chinese))
[14] JTG F40-2004,公路沥青路面施工技术规范[S].北京:人民交通出版社,2004 (JTG F40-2004,Technical specifications for construction of highway asphalt pavements[S].Beijing:China Communications Press,2004 (in Chinese))
[15] 郑大为,刘畅,李翱翔.水泥稳定碎石收缩性能试验研究[J].辽宁工程技术大学学报(自然科学版),2017,36(3):292-296 (ZHENG Dawei,LIU Chang,LI Aoxiang.Research on shrinkage deformation properties of cement-stabilized macadam[J].Journal of Liaoning Technical University(Natural Science),2017,36(3):292-296 (in Chinese))
[16] 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 engineering[S].Beijing:China Communications Press,2009 (in Chinese))
[2] ?enyur G,Erer D M.Cement stabilization of crushed aggregate:Analysis of the properties related to curing time [J].International Journal of Rock Mechanics & Mining Sciences & Geomechanics Abstracts,1990,10(3):315-321.
[3] 敖道朝.低剂量水泥稳定碎石在渝湛高速公路中的应用[J].公路,2006(7):318-321 (AO Daochao.Application of low content stabilized gravel to Yu-Zhan expressway [J].Highway,2006(7):318-321 (in Chinese))
[4] 高俊启,季天剑.橡胶沥青应力吸收层力学与疲劳性能研究[J].实验力学,2009,24(4):341-346 (GAO Junqi,JI Tianjian.Study of mechanical and fatigue properties for stress absorbing membrane interlayer in asphalt rubber[J].Journal of Experimental Mechanics,2009,24(4):341-346 (in Chinese))
[5] 贾侃.半刚性基层材料的疲劳特性研究[D].长安大学,2008 (JIA Kan.Study on the fatigue performance of semi-rigid base course materials[D].Chang′an University,2008 (in Chinese))
[6] 符佳,谈至明,杨吴礼,等.乳化沥青水泥稳定碎石的力学强度试验研究[J].公路,2014(7):318-323 (FU Jia,TAN Zhimiug,YANG Wuli,et al.Test and research on mechanical strength of emulsified asphalt cement-stabilized macadam [J].Highway,2014(7):318-323 (in Chinese))
[7] 程培峰,于铭泽.掺玄武岩纤维水泥稳定碎石温缩抗裂性能试验研究[J].中外公路,2013(6):234-238 (CHENG Peifeng,YU Mingze.Experimental study on temperature shrinkage and crack resistance of cement stabilized macadam mixed with basalt fiber[J].Journal of China & Foreign Highway,2013(6):234-238 (in Chinese))
[8] 肖鹏,李平.掺SBR胶乳与聚丙烯纤维水泥稳定碎石性能比较[J].建筑材料学报,2010(6):817-820 (XIAO Peng,LI Ping.Contrastive analysis of performance of cement-stabilized aggregate modified with SBR emulsion and polypropylene fibers [J].Journal of Building Materials,2010(6):817-820 (in Chinese))
[9] JTG E42-2005,公路工程集料试验规程[S].北京:人民交通出版社,2005 (JTG E42-2005,Test methods of aggregate for highway engineering[S].Beijing:China Communications Press,2005 (in Chinese))
[10] 周启伟,叶伟,杨波,等.水泥稳定碎石低温强度与干缩特性分析[J].硅酸盐通报,2016,35(3):948-952 (ZHOU Qiwei,YE Wei,YANG Bo,et al.Analysis of low temperature strength and drying shrinkage characteristics of cement stabilized macadam[J].Bulletin of the Chiness Ceramic Society,2016,35(3):948-952 (in Chinese))
[11] JTG/T F20-2015,公路路面基层施工技术细则[S].北京:人民交通出版社股份有限公司,2015 (JTG/T F20-2015,Technical guidelines for construction of highway roadbases[S].Beijing:China Communications Press Co.,Ltd.,2015 (in Chinese))
[12] GB 175-2007,通用硅酸盐水泥[S].北京:中国国家标准化管理委员会,2007 (GB 175-2007,Common oortland cement[S].Beijing:Standardization Administration of the People′s Republic of China,2007 (in Chinese))
[13] GB 2716-2005,食用植物油标准[S].北京:中国国家标准化管理委员会,2005 (GB 2716-2005,Hygienic standard for edible vegetable oil[S].Beijing:Standardization Administration of the People′s Republic of China,2005 (in Chinese))
[14] JTG F40-2004,公路沥青路面施工技术规范[S].北京:人民交通出版社,2004 (JTG F40-2004,Technical specifications for construction of highway asphalt pavements[S].Beijing:China Communications Press,2004 (in Chinese))
[15] 郑大为,刘畅,李翱翔.水泥稳定碎石收缩性能试验研究[J].辽宁工程技术大学学报(自然科学版),2017,36(3):292-296 (ZHENG Dawei,LIU Chang,LI Aoxiang.Research on shrinkage deformation properties of cement-stabilized macadam[J].Journal of Liaoning Technical University(Natural Science),2017,36(3):292-296 (in Chinese))
[16] 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 engineering[S].Beijing:China Communications Press,2009 (in Chinese))