Subgrade compaction of road construction machinery from quangongzi's blog

It is better to compaction when the natural water content of the soil is more than 3% to 5% of the optimum water content, the compaction degree of the compacted soil is too high, the soil water content is too high or too low to compaction, Increase the compaction costs, but in the construction of such a situation will often appear, digging out the soil moisture content is often too large, we can excavate the soil transported to the filling section of drying for some time and then smooth compaction, so that Will affect the progress of the construction, in this case, we should be in the construction of a number of more than fill the construction line construction, this section of drying, you can fill another section, alternate construction. Fill the section of construction, the day of the soil, should be smooth, compact, and no time to complete compaction, at least should be rolling 1 to 2 times, mainly to avoid sudden rains, water soaked soil, water content increases, affecting the lower Construction, slow down the progress of the construction, sometimes, water content is too large, to dry for a long time, but not yet dry, but also a rain, resulting in a vicious cycle, serious only shovel away the wet soil. Digging section construction, excavation from the first layer, according to the design of good top-pile-like, sprinkle lime line, and excavation 2m deep put a sample, strictly control the side of the pile, to prevent excavation, waste and slope Do not meet the standards; to prevent excavation is not enough, resulting in increased brush slope, when the excavation to the road trough, the road trough must be trimmed in place to reduce the channel trench and protective works digging the amount of base. In the filling section, the construction should be completed in 3-5 layers of a loft, the left, middle and right piles out of the side of the sprinkling lime line connected to prevent the filling width is not enough to cause rework or fill width too wide. Increase construction costs, resulting in waste. In close to the roadway construction, each layer lofting leveling, strict control of elevation, flatness and embankment width, the general side of the roadbed to relax 50cm, easy compaction edge.Small Road Roller - Shanghai Doan Machinery Technology Co.,Ltd

The correctness of road construction machinery has a direct bearing on the quality, progress and efficiency of highway construction, and maintenance and repair of road construction machinery is the guarantee for the completion of production tasks. Properly handle the use and maintenance of machinery is a modern road construction enterprise mechanization of construction is a crucial issue. Reasonable use of road construction machinery to maximize its potential to play, is the highway mechanized construction enterprises seeking, and maintenance and repair is to maximize the necessary mechanical prerequisites.