Geogrid's Longitudinal Joints Have More Coarse Materials On Both Sides And Are Difficult To Compact

- May 06, 2019-

Control of oil-stone ratio: If the asphalt content is too large, there will be too much free asphalt to lubricate between the mineral materials, which will lead to the decrease of the strength of the mixture and the phenomenon of oil flooding. If the asphalt content is too small, the mixture is difficult. Compaction and excessive voidage can cause early damage to the road surface. Before the Geogrid paving the lower layer, the upper base layer should be thoroughly cleaned and the underlying layer should be applied as required. After the construction of the lower layer of Geogrid, traffic control should be carried out to ensure that the Geogrid surface is dry and clean.

When the splitting width is spread several times, Geogrid's longitudinal joints have more coarse materials on both sides and are difficult to compact, so the flatness is not good, so when paving multiple times, it is best to use multiple sets. The paver forms an echelon operation. Geogrid tests the quality of the construction in asphalt concrete rolling. The quality of the rolling is directly related to the rolling temperature. The temperature of the mixture is decreasing after paving, especially within 4 to 15 minutes after paving. The temperature drop can reach 1 to 5 degrees Celsius per minute, so it is necessary to master the timing of the rolling and timely press the Geogrid. If you encounter climatic conditions such as low temperature, high humidity and high wind pressure, it will effectively shorten the time of Geogrid rolling.