With the construction of machinery and equipment failure to pay more and more attention, the current number of enterprises in the construction of highway engineering management have made corresponding changes in the correct use of machinery and scientific maintenance of the same important principles of effective management, Change the previous construction of heavy use, light maintenance of the traditional thinking, this will help to find those problems that are easily overlooked. Heavy use,…

The combination principle is: at least one layer of asphalt surface layer is a type of dense gradation asphalt concrete to prevent water infiltration. If the upper layer using Ⅱ type asphalt concrete, the surface layer shall be used Ⅰ type asphalt concrete, AM type open graded asphalt gravel should not be for the surface layer, can only do link layer.[url=http://doublesteelroller.com]Double Steel Roller - Road Machinery Equipment Manufacturers - Doan Machinery[/url]

SMA structure can be…

Nowadays, people's environmental protection viewpoint is more and more strong, all kinds of re-use products are gradually into the homes of ordinary people. Wood-plastic board as the re-use of wood is also gradually popular in the market. This use of abandoned wood to reproduce the production of the product not only has a ring of healthy green wood, but also has a special deformation is not easy to crack and so on. In addition to the rapid development in the furniture industry, the…

Construction process of the basic process

Before the start of each class, the mixer and feeding equipment to check and test operation; the use of measuring instruments to check and set pounds; proofing construction mix ratio: the raw materials used in the specifications, variety, origin, grade and quality inspection, and And check the construction with the ratio; the sand, stone moisture content to check, if any change, promptly notify the pilot to adjust the water consumption. All…

The right front view provides the best front view, providing the best view of the outer edge of the drum, an ergonomic driver platform, a modern dashboard, low machine height, 3-way travel with the highest driving comfort Hinged joint, center suspension point, clean edge setting - single-side hub suspension, fixed rudge offset 56 mm, low working platform, high overturning stability Model Maximum working width HD8VV 856 mm.[url=http://smallroadroller.com]Small Road Roller - Shanghai Doan…

Requirement: From the perspective of preventive maintenance of asphalt pavement, simultaneous crushed-rock seal technology does not impose higher requirements on construction conditions compared with other technologies, but in order to improve the maintenance performance, this new Technology advantage, or need to have certain conditions. First of all, the road surface damage should be diagnosed, to clear the key issues to be repaired; full consideration of asphalt binder and aggregate…

The use of mechanical force to soil, gravel and other fillers compact earthmoving machinery. Widely used in foundations, roads, airports, dams and other projects.

Compaction machinery according to the working principle is divided into: static rolling type, to replace the static roller compactor trend. Impact type, vibration type and compound action type.[url=http://smallroadroller.com]Small Road Roller - Shanghai Doan Machinery Technology Co.,Ltd[/url]

Static compaction…

Paver paving speed instability, is the main factor affecting the pavement smoothness. The main reasons for instability are:

Engine speed change.

The change of volume ratio of hydraulic components.

The Change of Slip Rate.

These three aspects are associated with sudden changes in load during the paving operation. The constant speed of the paver can not be achieved only by controlling the throttle of the engine or by manually controlling the variable displacement pump (the…