级配碎石配合比设计及施工质量控制
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摘要
近年来,随着我国经济建设的发展,公路建设项目大幅增长,现代化的施工水平日益提高,为确保工程质量,降低成本,争创优质工程,结合多年来的实践,总结和探索常用的级配碎石结构层材料配合比设计、施工技术及其质量控制。
在规范推荐的骨架密实型级配碎石基础上,通过填充试验,对骨架结构进行了优化；通过对原材料选材、性能质量及质量提高的措施改善级配碎石材料的质量；通过击实试验、CBR、抗压回弹模量及掺砂量影响规律等检验其力学性能。结果表明原材料采取适当的控制方法可提高其性能质量,设计级配具有较好的力学性能,可用于大面积施工作业,为级配碎石垫层的推广提供了良好的技术支持。
通过对试验段的试铺,提出了施工质量控制的措施,首先严格控制碎石原材料的质量,其次严格控制级配碎石材料的级配,再次要保证混合料均匀摊铺和碾压密实。针对其施工质量控制中原材料及级配,提出了混合料取样干筛、成品混合料检测含水率等措施分析拌合站拌合质量；在施工过程中提出了防止、减少离析的方法,并针对摊铺机摊铺后的混合料在不同位置的离析情况,通过筛分试验经数据分析离析情况并提供解决措施。同时在混合料拌合、运输、摊铺及碾压过程,分析质量控制的方法,提高级配碎石的施工质量。
对高速公路级配碎石垫层的施工技术进行了系统研究,提出了适合宝三高速公路的级配碎石垫层的施工质量控制指标,在实际工程应用中效果良好。
In recent years, with the development of China's economic construction, highway construction projects substantial growth, increasing the level of modern construction, in order to ensure the quality, reduce costs, and striving for quality engineering, combined with years of practice, review and explore the common grading gravel layer materials, mix design, construction technology and quality control.
Recommended in the standard framework based on dense graded crushed stone, through filling test, the optimization of the skeleton structure; through raw material selection, performance, quality and quality improvement measures to improve the quality of graded crushed stone material; by compaction test, CBR, compressive modulus and impact of laws such as the amount of sand mixed with test its mechanical properties. The results show that appropriate control of raw materials can improve the quality of their performance, design grading has good mechanical properties, can be used for large-scale construction operations for the promotion of graded gravel cushion provides a good technical support.
Through the test section of the test shop, proposed construction quality control measures, first of all raw materials and strict quality control of crushed stone, followed by strict control of graded crushed stone material gradation, mixture again to ensure uniform spreading and rolling compaction. For its construction quality control of raw materials and grading, proposed mixture of dry sieve sampling, product mix and other measures to detect the moisture content of the quality of mixing plant mixing; made during construction to prevent and reduce the segregation of the method, and for paver in the mixture after the segregation situation in different locations, through the screening test by the isolation and provided data analysis solutions.
Mixture while mixing, transport, spreading and rolling process, analytical quality control methods to improve construction quality graded gravel.
Graded gravel cushion on the highway construction technology of the system, put forward for bao three graded gravel cushion highway construction quality control indicators, good effect in practical application.
在规范推荐的骨架密实型级配碎石基础上,通过填充试验,对骨架结构进行了优化；通过对原材料选材、性能质量及质量提高的措施改善级配碎石材料的质量；通过击实试验、CBR、抗压回弹模量及掺砂量影响规律等检验其力学性能。结果表明原材料采取适当的控制方法可提高其性能质量,设计级配具有较好的力学性能,可用于大面积施工作业,为级配碎石垫层的推广提供了良好的技术支持。
通过对试验段的试铺,提出了施工质量控制的措施,首先严格控制碎石原材料的质量,其次严格控制级配碎石材料的级配,再次要保证混合料均匀摊铺和碾压密实。针对其施工质量控制中原材料及级配,提出了混合料取样干筛、成品混合料检测含水率等措施分析拌合站拌合质量；在施工过程中提出了防止、减少离析的方法,并针对摊铺机摊铺后的混合料在不同位置的离析情况,通过筛分试验经数据分析离析情况并提供解决措施。同时在混合料拌合、运输、摊铺及碾压过程,分析质量控制的方法,提高级配碎石的施工质量。
对高速公路级配碎石垫层的施工技术进行了系统研究,提出了适合宝三高速公路的级配碎石垫层的施工质量控制指标,在实际工程应用中效果良好。
In recent years, with the development of China's economic construction, highway construction projects substantial growth, increasing the level of modern construction, in order to ensure the quality, reduce costs, and striving for quality engineering, combined with years of practice, review and explore the common grading gravel layer materials, mix design, construction technology and quality control.
Recommended in the standard framework based on dense graded crushed stone, through filling test, the optimization of the skeleton structure; through raw material selection, performance, quality and quality improvement measures to improve the quality of graded crushed stone material; by compaction test, CBR, compressive modulus and impact of laws such as the amount of sand mixed with test its mechanical properties. The results show that appropriate control of raw materials can improve the quality of their performance, design grading has good mechanical properties, can be used for large-scale construction operations for the promotion of graded gravel cushion provides a good technical support.
Through the test section of the test shop, proposed construction quality control measures, first of all raw materials and strict quality control of crushed stone, followed by strict control of graded crushed stone material gradation, mixture again to ensure uniform spreading and rolling compaction. For its construction quality control of raw materials and grading, proposed mixture of dry sieve sampling, product mix and other measures to detect the moisture content of the quality of mixing plant mixing; made during construction to prevent and reduce the segregation of the method, and for paver in the mixture after the segregation situation in different locations, through the screening test by the isolation and provided data analysis solutions.
Mixture while mixing, transport, spreading and rolling process, analytical quality control methods to improve construction quality graded gravel.
Graded gravel cushion on the highway construction technology of the system, put forward for bao three graded gravel cushion highway construction quality control indicators, good effect in practical application.
引文
[1]何兆益.碎石基层防止半刚性路面裂缝及其路用性能研究[D].南京：东南大学,1997
[2]沈金安,李福普,陈北雄.高速公路沥青路面早期损害分析与防治对策[M].北京人民交通出版社2004,275-277
[3]袁峻.级配碎石基层性能与设计方法的研究[D].南京：东南大学,2004
[4]《沥青路面设计规范》中的回弹模量推荐值为200-350 Mpa
[5]何兆益.碎石基层防止半刚性路面裂缝及其路用性能研究[D].南京：东南大学,1997
[6]曹建新.重载交通下级配碎石基层材料组成结构与动力特性的研究[D].哈尔滨：哈尔滨工业大学,2001
[7]袁峻.级配碎石柔性基层道路设计方法的研究[D].南京：东南大学,2004
[8]徐鸥明.牧区道路粒料基层材料特性研究[D].西安：长安大学,2004
[9]莫石秀.多年冻土地区级配碎石路用性能及设计方法研究[D].西安：长安大学,2004
[10]莫石秀,马骉,王秉纲.级配碎石基于CBR的关键筛孔合理范围确定[J].广东公路交通,2006
[11]马骉,莫石秀,王秉纲.基于剪切性能的级配碎石关键筛孔合理范围确定[J].长安大学学报,2007
[12]沈金安.国外沥青路面设计方法总汇[M].北京：人民交通出版社,2004
[13]A. A Van Niekerk. Mechanical Behavior and Performance of Granular Bases andSub-bases in Pavements.2002
[14]Sabine Werkmeister. Permanent Deformation Behaviour of Unbound Granular Materialsin Pavement Constructions.2003
[15]曹建新.级配碎石混合料组成设计的试验研究.公路.2004
[16]魏密,松散粒料永久变形性能及柔性路面设计方法研究[D]：上海,同济大学博士学位论文,2006
[17]JTJ 014-97,公路沥青路面设计规范[S]
[18]王龙,孙耀东.级配碎石结构材料类型与压实方法[J].北华大学学报(自然科学版),2004(5)4,368-372
[19]鲁华征,级配碎石设计方法研究[D]：西安,长安大学工学硕士学位论文,2006
[20]袁峻,级配碎石基层性能与设计方法的研究[D],南京,东南大学工学硕士学位论文,2004
[21]曹建新.级配碎石材料级配设计方法探讨[J].中外公路.2008,6
[22]何兆益,黄卫,邓学均.不同成型条件下级配碎石力学特性研究[J].东南大学学报.1997
[23]钟梦武,吴善周.级配碎石回弹模量试验方法研究[J].公路.2007
[24]李丽民,何兆益.级配碎石柔性基层设计与施工[J].路基工程.2007
[25]王龙,冯德成.提高级配碎石基层使用性能的方法.中国公路学报.2006
[26]J. K. Shook, F. N. Finn, M. W. Witczak, C. L. Monismith. ThickNess Design of Asphalt Pavements-the Asphalt Institute Method. Proceedings of 5th International Conference on Asphalt Pavement, Vol.1, Delft:ISAP,1982
[27]柳音,级配碎石柔性基层性能试验研究[D]：重庆,重庆交通大学工学硕士学位论文,2008
[28]MonismithCl, CoetzeeNF,RefleetionCraeking:Anal"15[R], Laborato仔Stateand DesignConsideration, ProeeedingsofAAPT,1980,49
[29]BARKER, W.R BRABSTON, W. N. Development of a Structural Design Procedure for Flexible Airport Pavements. U. S Army Engineer Waterways Experiment Station. Tech. Report 1975
[30]JTJ034-2000,公路路面基层施工技术规范[S].北京：人民交通出版社,2000
[31]林有贵,罗竞,级配碎石基层的回弹模量及沥青路面设计弯沉的研究,中南公路工程,2001
[32]钟梦武,吴善周.级配碎石回弹模量试验方法研究[J].公路.2007
[33]徐鸥明,牧区道路粒料基层材料特性研究[D].西安：长安大学,2004
[34]孙耀东,李毅,王哲人.碎石基层混合料中细集料级配的研究[J].公路,2003
[35]郝培文,张宗涛,张登良.间断密级配的设计方法[J].石油沥青,2000
[36]朱照宏,许志鸿.柔性路面设计理论与方法.同济大学出版社,1985
[37]C. P. Valkering, F. D. R. Stapel and J. Li jzenga. The SHELL Pavement Design Method on a Personal Computer. Proceeding of 7th International Conference on Asphalt Pavement, Nottingham:ISAP,1992
[38]邓学钧.路基路面工程[M]北京：人民交通出版社,2000
[39]龚明山、王乐.水泥稳定级配碎石的施工及质量控制.山西建筑.2005
[40]龙继中,阎超,刘沛臻等.级配碎石压实特性的研究[J].武汉理工大学学报.2007
[41]赵亮.级配碎石在吉林省高速公路中的应用研究[D]：[吉林大学硕士论文].长春：吉林大学,2007,12
[42]JTG F80-2004,公路工程质量检验评定标准[S].中华人民共和国交通部发布,2004
[43]范新华.级配碎石的级配研究[J].北方交通.2007
[44]龙继中,阎超,刘沛臻等.级配碎石压实特性的研究[J].武汉理工大学学报.2007
[45]颜海建.级配碎石配合比设计及质量控制[J].西部探矿工程,2006
[2]沈金安,李福普,陈北雄.高速公路沥青路面早期损害分析与防治对策[M].北京人民交通出版社2004,275-277
[3]袁峻.级配碎石基层性能与设计方法的研究[D].南京：东南大学,2004
[4]《沥青路面设计规范》中的回弹模量推荐值为200-350 Mpa
[5]何兆益.碎石基层防止半刚性路面裂缝及其路用性能研究[D].南京：东南大学,1997
[6]曹建新.重载交通下级配碎石基层材料组成结构与动力特性的研究[D].哈尔滨：哈尔滨工业大学,2001
[7]袁峻.级配碎石柔性基层道路设计方法的研究[D].南京：东南大学,2004
[8]徐鸥明.牧区道路粒料基层材料特性研究[D].西安：长安大学,2004
[9]莫石秀.多年冻土地区级配碎石路用性能及设计方法研究[D].西安：长安大学,2004
[10]莫石秀,马骉,王秉纲.级配碎石基于CBR的关键筛孔合理范围确定[J].广东公路交通,2006
[11]马骉,莫石秀,王秉纲.基于剪切性能的级配碎石关键筛孔合理范围确定[J].长安大学学报,2007
[12]沈金安.国外沥青路面设计方法总汇[M].北京：人民交通出版社,2004
[13]A. A Van Niekerk. Mechanical Behavior and Performance of Granular Bases andSub-bases in Pavements.2002
[14]Sabine Werkmeister. Permanent Deformation Behaviour of Unbound Granular Materialsin Pavement Constructions.2003
[15]曹建新.级配碎石混合料组成设计的试验研究.公路.2004
[16]魏密,松散粒料永久变形性能及柔性路面设计方法研究[D]：上海,同济大学博士学位论文,2006
[17]JTJ 014-97,公路沥青路面设计规范[S]
[18]王龙,孙耀东.级配碎石结构材料类型与压实方法[J].北华大学学报(自然科学版),2004(5)4,368-372
[19]鲁华征,级配碎石设计方法研究[D]：西安,长安大学工学硕士学位论文,2006
[20]袁峻,级配碎石基层性能与设计方法的研究[D],南京,东南大学工学硕士学位论文,2004
[21]曹建新.级配碎石材料级配设计方法探讨[J].中外公路.2008,6
[22]何兆益,黄卫,邓学均.不同成型条件下级配碎石力学特性研究[J].东南大学学报.1997
[23]钟梦武,吴善周.级配碎石回弹模量试验方法研究[J].公路.2007
[24]李丽民,何兆益.级配碎石柔性基层设计与施工[J].路基工程.2007
[25]王龙,冯德成.提高级配碎石基层使用性能的方法.中国公路学报.2006
[26]J. K. Shook, F. N. Finn, M. W. Witczak, C. L. Monismith. ThickNess Design of Asphalt Pavements-the Asphalt Institute Method. Proceedings of 5th International Conference on Asphalt Pavement, Vol.1, Delft:ISAP,1982
[27]柳音,级配碎石柔性基层性能试验研究[D]：重庆,重庆交通大学工学硕士学位论文,2008
[28]MonismithCl, CoetzeeNF,RefleetionCraeking:Anal"15[R], Laborato仔Stateand DesignConsideration, ProeeedingsofAAPT,1980,49
[29]BARKER, W.R BRABSTON, W. N. Development of a Structural Design Procedure for Flexible Airport Pavements. U. S Army Engineer Waterways Experiment Station. Tech. Report 1975
[30]JTJ034-2000,公路路面基层施工技术规范[S].北京：人民交通出版社,2000
[31]林有贵,罗竞,级配碎石基层的回弹模量及沥青路面设计弯沉的研究,中南公路工程,2001
[32]钟梦武,吴善周.级配碎石回弹模量试验方法研究[J].公路.2007
[33]徐鸥明,牧区道路粒料基层材料特性研究[D].西安：长安大学,2004
[34]孙耀东,李毅,王哲人.碎石基层混合料中细集料级配的研究[J].公路,2003
[35]郝培文,张宗涛,张登良.间断密级配的设计方法[J].石油沥青,2000
[36]朱照宏,许志鸿.柔性路面设计理论与方法.同济大学出版社,1985
[37]C. P. Valkering, F. D. R. Stapel and J. Li jzenga. The SHELL Pavement Design Method on a Personal Computer. Proceeding of 7th International Conference on Asphalt Pavement, Nottingham:ISAP,1992
[38]邓学钧.路基路面工程[M]北京：人民交通出版社,2000
[39]龚明山、王乐.水泥稳定级配碎石的施工及质量控制.山西建筑.2005
[40]龙继中,阎超,刘沛臻等.级配碎石压实特性的研究[J].武汉理工大学学报.2007
[41]赵亮.级配碎石在吉林省高速公路中的应用研究[D]：[吉林大学硕士论文].长春：吉林大学,2007,12
[42]JTG F80-2004,公路工程质量检验评定标准[S].中华人民共和国交通部发布,2004
[43]范新华.级配碎石的级配研究[J].北方交通.2007
[44]龙继中,阎超,刘沛臻等.级配碎石压实特性的研究[J].武汉理工大学学报.2007
[45]颜海建.级配碎石配合比设计及质量控制[J].西部探矿工程,2006