粗集料骨架对石灰粉煤灰稳定碎石路用性能的影响
|
摘要
对石灰、粉煤灰和集料配比同为4∶12∶84的5种粗集料配制的骨架密实结构石灰粉煤灰稳定碎石进行了抗压、抗折强度、抗压回弹模量和收缩系数试验。试验结果表明:粗集料级配不同时,混合料试件的抗压强度、抗折强度、抗压回弹模量以及温缩、干缩系数存在差异,单一粒径粗集料组成的石灰粉煤灰稳定碎石抗压强度和抗压回弹模量相对较小,平均温缩、干缩系数较大。而粗集料采用多级嵌挤级配或连续级配的石灰粉煤灰稳定碎石抗压强度和抗压回弹模量相对较大,平均温缩、干缩系数稍小,具有更佳的力学和抗裂性能。
The tests of compressive strength,bending strength,compressive resilient modulus and shrinkage coefficient for 5 kinds of skeleton-closed lime-fly-ash stabilized crushed stone,in proportion as 4∶12∶84(lime∶fly-ash∶aggregate) are conducted.The experimental results show that(1) the compressive strength,bending strength,compressive resilient modulus,temperature shrinkage coefficient and dry shrinkage coefficient of mixture specimen vary with different coarse aggregate gradations,lime-fly-ash stabilized crushed stone with single size coarse aggregate has smaller compressive strength and compressive resilient modulus but larger average temperature shrinkage coefficient and dry shrinkage coefficient;(2) the lime-fly-ash stabilized crushed stone with multilevel built-in gradation or continuous gradation has larger compressive strength and compressive resilient modulus but smaller average temperature shrinkage coefficient and dry shrinkage coefficient.It has better mechanical and anti-cracking properties.
The tests of compressive strength,bending strength,compressive resilient modulus and shrinkage coefficient for 5 kinds of skeleton-closed lime-fly-ash stabilized crushed stone,in proportion as 4∶12∶84(lime∶fly-ash∶aggregate) are conducted.The experimental results show that(1) the compressive strength,bending strength,compressive resilient modulus,temperature shrinkage coefficient and dry shrinkage coefficient of mixture specimen vary with different coarse aggregate gradations,lime-fly-ash stabilized crushed stone with single size coarse aggregate has smaller compressive strength and compressive resilient modulus but larger average temperature shrinkage coefficient and dry shrinkage coefficient;(2) the lime-fly-ash stabilized crushed stone with multilevel built-in gradation or continuous gradation has larger compressive strength and compressive resilient modulus but smaller average temperature shrinkage coefficient and dry shrinkage coefficient.It has better mechanical and anti-cracking properties.
引文
[1]沙爱民.半刚性路面材料结构与性能[M].北京:人民交通出版社,1998.SHA Ai-min.Structures and Properties of Semi-rigidPavement Materials[M].Beijing:China CommunicationsPress,1998.
[2]胡力群.半刚性基层材料结构类型与组成设计研究[D].西安:长安大学,2004.HU Li-qun.Research on Structural Type and ComponentDesign for Semi-rigid Base Course Material[D].Xi'an:Chang'an University,2004.
[3]沙爱民,胡力群.半刚性基层材料的结构特征[J].中国公路学报,2008,21(4):1-5.SHA Ai-min,HU Li-qun.Structural Characteristics ofSemi-rigid Base Course Material[J].China Journal ofHighway and Transport,2008,21(4):1-5.
[4]吴传海.高等级公路二灰稳定碎石基层材料路用性能综合评定及合理配合比研究[D].西安:长安大学,2001.WU Chuan-hai.Road Performance Evaluation andReasonable Component Design of Lime-fly-ash StabilizedAggregates for High-grade Highways[D].Xi'an:Chang'an University,2001.
[5]刘红瑛.骨架密实型二灰稳定碎石基层配合比设计方法及路用性能研究[D].西安:长安大学,2001.LIU Hong-ying.Research on Component Design andProperty of Skeleton-closed Lime-fly-ash StabilizedAggregates[D].Xi'an:Chang'an University,2001.
[6]刘红瑛,戴经梁.骨架密实二灰稳定碎石混合料配合比设计方法[J].长安大学学报:自然科学版,2003,23(2):11-16LIU Hong-ying,DAI Jing-liang.Design Method of MixtureSkeleton Densed with Lime-flyash and Crushed Rock[J].Journal of Chang'an University:Natural Science Edition,2003,23(2):11-16.
[7]滕旭秋.二灰稳定碎石混合料配合比设计及路用性能研究[D].西安:长安大学,2003TENG Xu-qiu.Research on Component Design andPavement Performance of Lime-Fly Ash StabilizedAggredates[D].Xi'an:Chang'an University,2003.
[8]姜爱峰,任惠清.二灰稳定碎石组成配合比设计[J].同济大学学报:自然科学版,1999,27(3):309-313.JIANG Ai-feng,REN Hui-qing.Mixture Design of Lime-fly Ash Stabilized Aggregate[J].Journal of TongjiUniversity:Natural Science Edition,1999,27(3):309-313.
[9]张嘎吱,沙爱民.水泥粉煤灰稳定碎石配合比设计[J].长安大学学报:自然科学版,2007,27(5):16-19.ZHANG Ga-zi,SHA Ai-min.Mixing Design of Cement-fly-ash Stabilized Crushed-stones[J].Journal of Chang'an University:Natural Science Edition,2007,27(5):16-19.
[10]JTG E42—2005,公路工程集料试验规程[S].JTG E42—2005,Test Methods of Aggregate for Highway Engineering[S].
[11]JTJ034—2000,公路路面基层施工技术规范[S].JTJ034—2000,Technical Specifications for Construction of Highway Roadbases[S].
[12]李炜光,申爱琴,张玉斌.二灰稳定集料抗裂性能评价与应用[J].长安大学学报:自然科学版,2007,27(2):1-5.LI Wei-guang,SHEN Ai-qin,ZHANG Yu-bin.Anti-cracking Capability of Lime-flyash Stabilized Aggregate in Roadbase[J].Journal of Chang'an University:Natural Science Edition,2007,27(2):1-5.
[2]胡力群.半刚性基层材料结构类型与组成设计研究[D].西安:长安大学,2004.HU Li-qun.Research on Structural Type and ComponentDesign for Semi-rigid Base Course Material[D].Xi'an:Chang'an University,2004.
[3]沙爱民,胡力群.半刚性基层材料的结构特征[J].中国公路学报,2008,21(4):1-5.SHA Ai-min,HU Li-qun.Structural Characteristics ofSemi-rigid Base Course Material[J].China Journal ofHighway and Transport,2008,21(4):1-5.
[4]吴传海.高等级公路二灰稳定碎石基层材料路用性能综合评定及合理配合比研究[D].西安:长安大学,2001.WU Chuan-hai.Road Performance Evaluation andReasonable Component Design of Lime-fly-ash StabilizedAggregates for High-grade Highways[D].Xi'an:Chang'an University,2001.
[5]刘红瑛.骨架密实型二灰稳定碎石基层配合比设计方法及路用性能研究[D].西安:长安大学,2001.LIU Hong-ying.Research on Component Design andProperty of Skeleton-closed Lime-fly-ash StabilizedAggregates[D].Xi'an:Chang'an University,2001.
[6]刘红瑛,戴经梁.骨架密实二灰稳定碎石混合料配合比设计方法[J].长安大学学报:自然科学版,2003,23(2):11-16LIU Hong-ying,DAI Jing-liang.Design Method of MixtureSkeleton Densed with Lime-flyash and Crushed Rock[J].Journal of Chang'an University:Natural Science Edition,2003,23(2):11-16.
[7]滕旭秋.二灰稳定碎石混合料配合比设计及路用性能研究[D].西安:长安大学,2003TENG Xu-qiu.Research on Component Design andPavement Performance of Lime-Fly Ash StabilizedAggredates[D].Xi'an:Chang'an University,2003.
[8]姜爱峰,任惠清.二灰稳定碎石组成配合比设计[J].同济大学学报:自然科学版,1999,27(3):309-313.JIANG Ai-feng,REN Hui-qing.Mixture Design of Lime-fly Ash Stabilized Aggregate[J].Journal of TongjiUniversity:Natural Science Edition,1999,27(3):309-313.
[9]张嘎吱,沙爱民.水泥粉煤灰稳定碎石配合比设计[J].长安大学学报:自然科学版,2007,27(5):16-19.ZHANG Ga-zi,SHA Ai-min.Mixing Design of Cement-fly-ash Stabilized Crushed-stones[J].Journal of Chang'an University:Natural Science Edition,2007,27(5):16-19.
[10]JTG E42—2005,公路工程集料试验规程[S].JTG E42—2005,Test Methods of Aggregate for Highway Engineering[S].
[11]JTJ034—2000,公路路面基层施工技术规范[S].JTJ034—2000,Technical Specifications for Construction of Highway Roadbases[S].
[12]李炜光,申爱琴,张玉斌.二灰稳定集料抗裂性能评价与应用[J].长安大学学报:自然科学版,2007,27(2):1-5.LI Wei-guang,SHEN Ai-qin,ZHANG Yu-bin.Anti-cracking Capability of Lime-flyash Stabilized Aggregate in Roadbase[J].Journal of Chang'an University:Natural Science Edition,2007,27(2):1-5.