玻纤土工格栅在水泥混凝路的作用表现

       沥青混凝土在高温时具有流变性,在车辆荷载作用下，沥青面层形成了微量的波形流变，面层中没有任何可以约束沥青混凝土流变的骨架材料,造成沥青面层流变累积叠加，形成车辙。在沥青面层中使用玻纤土工格栅，起到骨架作用，沥青混凝土中集料贯穿于格栅之间，形成复合力学嵌锁体系，有效限制集料运动，增强沥青面层中的横向约束力，使各部分彼此牵制，防止沥青面层推移，起到抵抗车辙的作用。

The asphalt concrete has rheological property at high temperature. Under the action of vehicle load, the asphalt surface layer has formed micro wave rheological property. There is no skeleton material in the surface layer that can restrict the rheological property of the asphalt concrete, resulting in the accumulation and superposition of the rheological property of the asphalt surface layer and the formation of ruts. The glass fiber geogrid is used in the asphalt surface layer to play a skeleton role. The aggregate in the asphalt concrete penetrates between the grids, forming a composite mechanical interlocking system, effectively limiting the movement of the aggregate, enhancing the lateral binding force in the asphalt surface layer, making each part restrain each other, preventing the asphalt surface layer from moving, and playing the role of resisting the rut.

        严寒时期，沥青混凝土面层的温度近于气温，沥青混凝土遇冷收缩，产生拉应力，在受到荷载反复作用下，拉应力进一步增加,当拉应力超过沥青混凝土拉伸强度时，产生裂纹，在裂纹两端处拉应力更加集中，裂纹逐步形成裂缝。玻纤土工格栅可抵抗沥青混凝土低温收缩产生的拉应力，避免裂缝病害。

In the severe cold period, the temperature of asphalt concrete surface is close to the air temperature, and the asphalt concrete shrinks when it is cold, resulting in tensile stress. Under the repeated action of load, the tensile stress further increases. When the tensile stress exceeds the tensile strength of asphalt concrete, cracks are produced, and the tensile stress at both ends of cracks is more concentrated, and cracks gradually form. The glass fiber geogrid can resist the tensile stress caused by the low temperature shrinkage of asphalt concrete and avoid the crack disease.

       水泥混凝土路面损坏有两种类型:一种是结构性破坏，如开裂、变形、接缝损坏;另一种是功能性损坏，如表面滑溜、表面损坏;其中路面唧泥,地基不均匀沉降引起的路面开裂是水泥混凝土路面损坏的主要问题。使用经特殊处理的玻纤土工格栅,可降低路面破坏，其作用主要表现在:

There are two types of cement concrete pavement damage: one is structural damage, such as cracking, deformation, joint damage; the other is functional damage, such as surface slippage, surface damage; among them, the main problem of cement concrete pavement damage is pavement cracking caused by pumping mud and uneven settlement of foundation. The use of specially treated fiberglass geogrid can reduce the damage of the road surface, and its main functions are as follows:

       (1)在基层表面铺设玻纤土工格栅后喷洒起防水作用的重油热沥青(或粘层油)， 可有效阻止雨水对基层面的侵蚀，增强基层整体强度,延长基层使用寿命。

       (1) After the glass fiber geogrid is laid on the surface of the base course, the heavy oil hot asphalt (or tack coat oil) which plays a waterproof role is sprayed, which can effectively prevent the rain from eroding the base course surface, enhance the overall strength of the base course, and extend the service life of the base course.

       (2)在石灰土基层表面铺设玻纤土工格栅可有效阻止基层裂缝向上反射，防止反射裂缝的产生。

       (2) The glass fiber geogrid laid on the surface of lime soil base can effectively prevent the upward reflection of base cracks and prevent the occurrence of reflection cracks.

       (3)玻纤土工格栅能增强水泥混凝土强度,使路面荷载应力均匀扩散，防止反射裂缝的产生,延长路面使用寿命。

       (3) The glass fiber geogrid can enhance the strength of cement concrete, make the load stress of pavement spread evenly, prevent the reflection crack and prolong the service life of pavement.

       由于雨水不可避免的沿着纵缝、模缝等处渗人到石灰土基层表面，渗人到基层表面的雨水，在行车荷载的重复作用下，形.成高压水，在板底高速流动，对石灰土基层产生冲刷，基层中的细颗粒被带到混凝土表面上来，从而产生唧泥，唧泥现象的长期发展，必然是石灰土基层表面的凹凸不平，从而使混凝土板底脱空，导致板体的荷载应力z，加速混凝土板体的断裂。由于板体的断裂，又扩大了板体的渗水范围，反复循环，促使断板率猛增，从而造成水泥混凝土路面大面积损坏。

Because the rainwater inevitably seeps into the surface of lime soil base along the longitudinal joints, formwork joints and other places, the rainwater seeps into the surface of the base course, under the repeated action of the driving load, forms and forms high-pressure water, flows at high speed at the bottom of the slab, scours the lime soil base course, and the fine particles in the base course are brought to the concrete surface, thus producing the long-term development of the phenomenon of mud pumping, which is bound to be stone The uneven surface of the lime soil base makes the bottom of the concrete slab void, which leads to the increase of the load stress of the slab and the acceleration of the fracture of the concrete slab. Because of the fracture of the slab, the seepage range of the slab is enlarged, and the circulation is repeated, which makes the rate of the broken slab increase sharply, thus causing a large area of damage to the cement concrete pavement.

         玻璃纤维土工格栅的施工注意事项：

         Precautions for construction of fiberglass geogrid:

        (1)玻纤土工格栅铺设时，要求路面温度在5c- 60C之间.

        (1) When the glass fiber geogrid is laid, the road surface temperature is required to be between 5C - 60C

        (2)玻纤土工格栅背胶易溶于水，雨天或路面潮湿时不得施工。

        (2) The back glue of glass fiber geogrid is easy to dissolve in water. Construction is not allowed in rainy days or when the road surface is wet.

       (3)严格控制运送混合料的车辆出入，在格栅层上禁止车辆急转向、急刹车和倾泻混合料，以防损坏玻璃纤维土工格栅。

       (3) Strictly control the access of the vehicles transporting the mixture, and forbid the vehicles to swerve, brake and pour the mixture on the grid layer, so as to prevent the glass fiber geogrid from being damaged.

       (4)玻纤土工格栅为玻璃纤堆制造，对人体皮肤易产生刺激作用，施工人员烦戴防护手套。

       (4) Glass fiber geogrid is made of glass fiber pile, which is easy to cause irritation to human skin. Construction personnel are tired of wearing protective gloves.

       (5)当使用的胶轮压路机需注水增加重量时，其注水量不能太满，以防溢流到玻纤土工格栅上，造成其背胶失去粘性.

       (5) When the weight of the used rubber tyred roller needs to be increased by water injection, the water injection shall not be too full to prevent overflow to the fiberglass geogrid, resulting in the loss of viscosity of the back glue

       (6)在实际操作过程中，玻纤土工格栅施工质量的好坏对整个工程的质量有着很大的影响。因此，需加强质量监

       (6) In the actual operation process, the construction quality of fiberglass geogrid has a great impact on the quality of the whole project. Therefore, quality supervision must be strengthened

督、提高施工人员技术水平。

Supervise and improve the technical level of construction personnel.

       相信大家看完以上内容以后，应该也对玻纤土工格栅在水泥混凝路的作用表现有所了解了，希望会对大家有所帮助吧。

I believe that after reading the above content, you should also understand the function of glass fiber geogrid in the cement concrete road. I hope it will help you.

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