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drainage performance
    Test result shows that porous concrete has fine drainage performance,its permeability coefficient is more than 10 cm·s~(-1);
    结果表明多孔混凝土具有良好的排水性能,其常见配合比的渗透系数均大于10 cm.
    Research on Evaluation Method of Drainage Performance of the Porous Asphalt Pavement
    排水性沥青路面排水性能评定方法研究
    Research on Drainage Performance and Design of Drainage Structure on the Porous Asphalt Pavement
    排水性沥青路面排水性能研究与排水设施的设计
    And then the drainage performance of porous concrete is studied, porosity and coefficient of penneability are thought to be good targets of its drainage performance, and the dependence relation of coefficient of permeability and porosity is drawn by tests with the permeameter developed by the author.
    研究了多孔混凝土的排水性能,提出空隙率和渗透系数是表征其排水性能的指标,利用自行研制的渗透仪,得出渗透系数与空隙率的相关关系。
    Based on the analysis of the time pavement structures exposed to saturation, the drainage performance of pavement structures, the declining rules of resilience modulus of pavement materials and the changes of interfacing conditions between two layers, a new method of pavement design is provided.
    通过路面结构受水浸泡的时间长短和路面结构的排水性能 ,以及受水浸泡后路面材料抗压回弹模量下降的变化规律和层间接触条件变化分析 ,提出了沥青路面结构设计的新思路和新方法。
    Seepage experimental studies and performance analysis on sandy gravel and medium sand have shown that both mechanics performance and drainage performance of sandy gravel as a drainage cushion layer is better,in the same conditions,than fine sands. The feasibility to use sandy gravel as the drainage cushion layer for soft road foundation is verified.
    对砾砂和中砂进行渗透试验研究及性能的分析,表明砾砂作为砂垫层在同等条件下,其力学性能和排水性能方面都有优于细砂,认证了在公路软基处理中用砾砂作垫层的可行性。
    Targeting at using asphalt debris flexible base course as stress elimination layer and water drainage layer for high-grade highway,this paper introduces current study on mechanical property of asphalt debris mixture,its relationship with anti permanent deformation,anti-fatigue performance,void percentage,water drainage performance and water stability,etc. and gives some know how.
    针对沥青碎石柔性基层作为高等级公路的应力消减层和排水层,综述了沥青碎石混合料的力学性能与抗永久变形能力、抗疲劳性能、空隙率与排水性能及水稳性的关系的研究现状,并提出了一些认识。
 

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