摘要
文中提出了一种嵌锁式级配碎石IGBS。并利用贝雷法及相关研究结论、结合Fuller公式分段对IGBS-25、30、40的级配曲线进行确定,采用VCADRF方法对IGBS进行验证;以规范连续型和骨架密实型级配为对照,进行级配曲线、CBR和动态回弹模量的测定和分析。结果表明:VCADRF计算结果右侧均小于左侧,最大差值为2.87%,IGBS满足嵌锁式结构的要求;相较对照组,其级配曲线位于二者之间,为嵌锁式结构的形成提供了条件;CBR分别提升11.2%和22.4%,动回弹模量分别提升13.6%和27.4%,IGBS具有更佳的力学性能,且力学性能随着粒径增大而增大。
In this paper, a kind of interlocking graded crushed stone IGBS is proposed. The gradation curves of IGBS-25, 30 and 40 are determined by Bailey method and related research conclusions, combined with fuller formula, and verified by VCADRF method;The grading curve, CBR and dynamic modulus of resilience were measured and analyzed by comparing the continuous and skeleton dense grading in the code. The results show that the right side of VCADRF is smaller than the left side, and the maximum difference is 2.87%. IGBS meets the requirements of interlocking structure;Compared with the control group, the grading curve is between the two, which provides conditions for the formation of the interlocking structure;2% and 22. 4% respectively, and the dynamic modulus of resilience increased by 13. 6% and 27. 4%respectively. IGBS has better mechanical properties, and the mechanical properties increase with the increase of particle size.
作者
雷青
王昭勇
Lei Qing;Wang Zhaoyong(Tongren Highway Administration of Guizhou Province,Tongren,Guizhou 554300)
出处
《江西建材》
2021年第11期29-31,共3页
Jiangxi Building Materials
关键词
道路工程
嵌锁式级配碎石
级配设计
力学性能
Road engineering
Interlocking graded broken stone
Grading design
Mechanical properties