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The test result shows that, for the asphalt pavement structure with thick hot-mix asphalt course, the influence of flexible or semi-rigid base on pavement rutting is little and perpetual deformation occurs mostly on the top asphalt layer of 20 centimeter depth.

环道试验测定结果表明:对于本试验三种沥青层厚度超过20 cm的沥青路面结构,土基对车辙的影响很小,级配碎石柔性基层和水泥稳定碎石半刚性基层对车辙的影响也很小,路面永久变形主要发生在20 cm深度范围的沥青层内。

These indentions in the concrete divert excess water from the surface to reduce the amount of water between tires and the runway or road.

这些锯齿型沟槽能够间路面上的水排走,从而减少轮胎与路面之间的水分。

The contact condition of cement concrete 's face plate with denudation affect not only road's joint space and joint gap, but also road's early stage cracking.

水泥混凝土面板与基层接触状况不仅影响路面接缝间距和接缝宽度,同时也对路面早期开裂产生影响。

are gained that after widening, the settlement of two sides of the old road pavement is contrary, cross slope of old road is different, horizontal displacement of the old road pavement is minishes, the area of maxium settlement, maxium lateral displace and disease of old road is different as before widening.

分析结果指出:在拓宽段作用下,靠近老路中心一侧老路路面沉降逐渐减小,远离老路中心一侧沉降逐渐增大,相应横坡也在发生变化;老路路面的水平位移有较大幅度的减小;而且老路最大沉降、最大水平位移、最大剪应力及最易发生病害的位置与拓宽前也发生了较大的变化。

In our "Specifications for Highway Pavement Design", codes on parameter of temperature gradient of cement concrete surfacings are not very rational.

我国《公路路面设计规范》对水泥混凝土路面设计温度梯度的规定很不合理。

It is appropriate to evaluate asphalt pavement compactness by stoving the non-aridity core sample from half an hour to one half hours in oven at(60±5)℃ if the core sample needn't to be used in other tests again.

沥青路面压实度是指工地实际达到的密度与室内标准密度的比值,因此,准确量测沥青路面的密度是准确评价路面压实度的关键。

First acts according to the asphalt pavement the light thermal environment, has established the asphalt road surface thermal equilibrium equation, to affect the asphalt pavement surface thermal equilibrium temperature each factor level of significance to carry on the analysis, discovered in order to reduce the asphalt pavement surface thermal equilibrium temperature the feasible technical route.

首先根据沥青路面的光热环境,建立了沥青路表面的热平衡方程,对影响沥青路面表面热平衡温度的各个因素的显著性水平进行了分析,以求找出降低沥青路面表面热平衡温度的可行技术路线。

In allusion to drivers′ response time state under the conditions of rain,fog,strong light and dark pavement,the relationship between visibility,glare strength,pavement brightness and response time of drivers are studied. The results show that response time of drivers increases with visibility,glare and brightness decreasing.

针对雨、雾等灾害性天气以及强光、路面亮度不足等恶劣环境下驾驶员的反应时间状况,在国内外研究现状的调研分析的基础上,对能见度、眩光强度、路面亮度等道路环境与驾驶员反应时间的关系进行研究,结果表明驾驶员的反应时间随能见度增加、眩光增强、亮度减少而增长。

Through some information investigation and pavement crack pouring practices,it is found that as a new material,HR polymer asphalt crack pouring material forming by mixing AH-70# heavy-traffic petroleum asphalt with HR polymer in fixed proportion can by used to repair asphalt pavement cracks,and the effect is good,which has positive significance for prolonging the maintenance period of roads and reducing maintenance costs.

通过一些资料调查及路面灌缝实践发现,将AH-70#重交通石油沥青与HR型聚合物按一定比例掺配合成的HR型聚合物沥青灌缝新材料用于修补沥青路面裂缝,效果较为明显,对延长道路的维护周期、减少养护费用具有积极的意义。

During the operation of cold reclaiming for asphalt pavements, water content in aggregate has a direct influence on reclaiming quality of the road mat. The spraying systems on existing domestic cold road reclaimers are poor in control accuracy, complicate in operation and low in reliability.

沥青路面的冷再生施工过程中,混合料的含水量直接影响到路面结构层的再生质量,现有的国产路面冷再生机喷洒系统控制精度低、操作复杂且可靠性差。

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