【作者】 孙天垠；

【导师】 沙爱民；

【作者基本信息】 长安大学 ， 道路与铁道工程， 2010， 硕士

【摘要】 当自由水渗入路面内部不能及时排出时,沥青和水泥混凝土路面都可能出现水损害,结果导致路面严重破坏。为了有效迅速地将积滞在路面内部的水排除路面外,提出在路面的面层下铺筑多孔水泥稳定碎石排水基层。本文主要研究了多孔水泥碎石基层适用的排水性路面结构类型、排水系统,以及多孔水泥碎石基层的材料组成设计方法与路用性能,并铺筑试验路验证其在实体工程应用的效果。首先根据不同的条件对排水性路面结构进行了分类,并布设相对应的排水设施,然后由水力计算的结果对排水设施的结构尺寸和材料进行设计。其次采用体积法对多孔水泥碎石进行材料组成设计,通过室内试验分析了级配、水泥用量、水灰比等因素等对混合料性能的影响,确定出各因素的合理参数使混合料满足排水性能和强度的要求；拟定出多孔水泥碎石宜采用的级配范围,提出关键筛孔(最大粒径和4.75mm)的通过率,以及室内试验成型方式和最佳含水量的确定。最后对排水性能和路用性能进行了研究,得到渗透系数的影响因素和室内外测试方法。在路用性能方面对强度和疲劳性能进行了重点分析与研究。为了研究实体工程中的应用效果,在河南驻马店铺筑了多孔水泥碎石试验段,总结了排水基层的施工工艺和相对应的排水设施布设步骤,性能检测证实试验段力学强度和渗透性能良好,达到了预期目的。更多还原

【Abstract】 When the free water that penetrates the internal surface can’t be discharged in time, the asphalt and cement concrete pavement may suffer water damage.Then pavement is damaged severely. In order to drain the internal water out quickly and effecticely, we suggested that Porous Cement-Treated Permeable Base should be paved under the surface course.This thesis researched Porous drainage pavement structure type and drainage systems, material composition design and pavement performance based on Porous Cement-Treated base. And test road test was constructed to verify its results in the practical engineering. First of all, road drainage structures would be classified under different conditions, and the corresponding drainage facilities were designed in accordance with the results of hydraulic calculations; Secondly, the volume method was used for the design of porous materials composed of cement stone. Through the laboratory test we discussed gradation, cement content, water cement ratio and other factors on the mixture properties, and determined their reasonable parameters to meet the pavement performance. We studied out the suitable range of porous concrete crushed stone, and the passing rate of key sieve (maximum particle size and 4.75mm),then proposed forming laboratory test methods and optimum water content. Finally, we researched performance of drainage and pavement, and got the coefficient of permeability factors and testing method indoor and outdoor. Analysis and research were focused on aspects of road performance and fatigue strength.In order to explore the interior of Engineering in the entities, we paved porous cement test section in Zhumadian of Henan Province.From the section we concluded primary drainage construction technology and the corresponding drainage layout steps. Performance tests confirmed the mechanical strength and permeability were in good and achieved the desired purpose.更多还原