If there is water on the pavement, it should be paved after the pavement is dry. Construction on rainy and wet roads is prohibited. Before laying the fiberglass grille, it is necessary to sprinkle the viscous layer of oil. If the emulsified asphalt is used as the viscous layer of oil, the grid must be laid after the emulsified asphalt is completely demulsified. When laying fiberglass, on the flat and compacted site, the main force direction (longitudinal) of the installed grid should be perpendicular to the axis of the embankment. The fiberglass should be kept flat and tight without wrinkling. Nails and earth and stone are fixed by weight. The main stress direction of the laid grid is as long as possible without joints. The connection between the width and width can be manually tied and overlapped, and the overlap width is not less than 10cm.
If the grid is set in more than two layers, the layers should be staggered. After laying a large area, adjust its straightness as a whole. After filling a layer of soil, before rolling, the grille should be tensioned again manually or with a machine. The strength should be uniform, so that the grille is in a straight state in the soil, so that the grille has effective tension. After that, roll it again with a clean steel roller. The grid overlap is vertical overlap, the overlap width is not less than 20cm, and the horizontal overlap width is not less than 15cm. The vertical overlap should place the previous one on the next one according to the asphalt paving direction. When fixing, do not nail the steel nails to the glass fiber, and do not directly strike the glass fiber with a hammer. If the nails are broken or the iron sheet is loosened after fixing, you need to fix it again.
After the fiberglass grid is laid and fixed, it must be moderately rolled and stabilized with a rubber roller to make the grid firmly adhere to the original road surface. Strictly control the vehicles transporting the mixture to and from the scene, and prohibit the vehicle from making sharp turns, braking, and dumping the mixed material on the grille layer to prevent damage to the glass fiber grille. When the ground temperature is low before construction, the content of adhesive should be increased in the post-processing formula of the surface of the glass fiber grille, and the modifier with a lower softening point should be used. At the same time, the fixed nails should be changed to a plum blossom type. The straightening tension of each section of 50 meters is changed to the straightening tension of each meter, so that the grid can be firmly bonded to the lower layer after rolling by rolling. When the temperature is lower than 10 ℃, no construction is allowed.
If the weather is hot in the later stage of construction, and the ground temperature is as high as 70 ° C or higher, the adhesive content of the fiberglass grid and the softening point of the modifier in the post-treatment formula of the glass fiber grid used in the early stage are difficult to apply at high temperatures, and the quality cannot be effective Control, the paving machine paves the asphalt concrete middle layer is easy to roll up the glass fiber grid. It is required to improve the adhesives and modifiers in the formulation in time to ensure that glass fiber and asphalt have a better composite type and play their due skeleton functions. The use of glass fiber grid reinforced asphalt concrete pavement can greatly improve its structural performance, which has become the consensus in the industry, but the reasons for improvement need to be further studied.