| 摘要: |
| 基于垂直振动成型方法(VVCM)研究了粗集料级配对其振实密度的影响，细集料级配对有机高分子聚合物SRX稳定细集料抗压强度的影响，粗、细集料质量比及关键筛孔通过率对SRX稳定碎石抗压强度的影响，以抗压强度最大为原则提出了SRX稳定碎石骨架密实级配，并验证了其路用性能.结果表明：当粒径为19～375mm，95～19mm，475～95mm的粗集料质量比为48∶30∶22时，混合粗集料振实密度最大；当筛孔通过率的递减系数I=065时，SRX稳定细集料抗压强度最大；当粗、细集料质量比为65∶35时，SRX稳定碎石抗压强度最大；当关键筛孔315，19，95，475，236，06，0075mm通过率分别为950%～1000%，640%～710%，440%～520%，320%～400%，220%～290%，110%～180%和50%～110%时，SRX稳定碎石抗压强度最大；与规范级配和水泥碎石级配相比，骨架密实级配SRX稳定碎石抗压强度、劈裂强度至少可分别提高13%和19%. |
| 关键词: 道路工程 SRX稳定碎石 级配 垂直振动成型方法 |
| DOI：103969/j.issn1007 9629201702010 |
| 分类号: |
| 基金项目:浙江交通科技项目(2013H18) |
|
| Skeleton Dense Gradation and Road Performance of SRX Stabilized Crushed Stone |
|
JIANG Yingjun1, ZHANG Zouyi1, CHEN Zhejiang2, LI Shouwei2
|
|
1.Key Laboratory for Special Area Highway Engineering of Ministry of Education, Changan University, Xian 710064, China;2.Jinhua Highway Administration Bureau, Jinhua 321000, China
|
| Abstract: |
| Influences of coarse aggregate gradation on its density of vibration, fine aggregate gradation on compressive strength of solution road romixsoilfix(SRX) stabilized fine aggregate, mass ratio of coarse and fine aggregates and key sieve pore passing ratio on compressive strength of SRX stabilized crushed stone based on vertical vibration compaction method(VVCM) were studied. Skeleton dense gradation of SRX stabilized crushed stone in the principle of maximum mechanical strength was put forward and its road performance was verified. The results show that density of vibration of mixture coarse aggregate reaches maximum when mass ratio of the 19375mm aggregate, 9519mm aggregate, 47595mm aggregate is 48∶30∶22. Compressive strength of SRX stabilized fine aggregates reaches maximum when the decreasing coefficient(I) of fine aggregate gradation is 065. Compressive strength of SRX stabilized crushed stone reaches maximum when mass ratio of coarse and fine aggregates is 65∶35. Compressive strength of SRX stabilized crushed stone reaches maximum when key sieve pore passing ratios of 315, 19, 95, 475, 236, 06, 0075 mm is 950%1000%, 640%710%, 440%520%, 320%400%, 220%290%, 110%180% and 50%110%, respectively. Compared with the standard gradation and cement stabilized gravel gradation, compressive strength and splitting tensile strength of SRX stabilized crushed stone at skeleton dense gradation can be increased by 13% and 19% or more, respectively. |
| Key words: road engineering solution road romixsoilfix(SRX) stabilized crushed stone gradation vertical vibration compaction method |
