發(fā)布時間：2018-04-09 08:47

  本文選題：道路工程　切入點：高性能RAP料　出處：《重慶交通大學學報(自然科學版)》2017年06期

【摘要】：對比分析了振動壓實和重型擊實成型方式下,級配RAP料物理、力學特性,研究表明使用振動壓實的方法更能夠代表實際的壓實效果。采用粒子干涉理論對粗集料級配進行了優(yōu)化,采用最大密度曲線理論Ⅰ法對細集料進行了優(yōu)化,通過變化粗細集料比例,以最大干密度與強度雙優(yōu)化指標優(yōu)選級配,初步提出具有優(yōu)良物理力學特性的級配。在此基礎上,進一步深入研究篩孔通過率對級配RAP料力學性能的影響規(guī)律,并以力學性能最優(yōu)為原則,提出了基于振動成型的級配RAP料骨架密實級配。以劈裂強度為指標,提出了以長度為2.5 cm,摻量為1‰的仿鋼纖維(PPTF)作為高性能RAP料的增強纖維。
[Abstract]:The physical and mechanical properties of graded RAP materials under vibration compaction and heavy compaction are compared and analyzed. The results show that the method of vibration compaction is more representative of the actual compaction effect.The gradation of coarse aggregate is optimized by particle interference theory, and the fine aggregate is optimized by using the theory of maximum density curve I. By changing the ratio of coarse aggregate to fine aggregate, the gradation is optimized by double optimization indexes of maximum dry density and strength.The gradation with excellent physical and mechanical properties is preliminarily proposed.On this basis, the influence of the pass rate of sieve holes on the mechanical properties of graded RAP was further studied, and based on the principle of optimum mechanical properties, the dense gradation of graded RAP was proposed based on vibration molding.Taking the splitting strength as the index, a kind of steel imitation fiber (PPTF) with a length of 2.5 cm and a content of 1 鈥，

本文編號：1725709