Construction of asphalt concrete mixing plant senior representative of asphalt pavement material is

Asphalt concrete batching plant for asphalt concrete in different binders used by, can be divided into two categories of petroleum asphalt and coal tar pitch; in some countries or regions are also making use of or mixed with natural asphalt mix. According to the variety of different aggregates can be divided into crushed stone, gravel, sand, slag type, gravel is the most common. Press mixture maximum particle size are different, can be divided into coarse grains (35~40 mm), medium (20~25 mm), fine (10~15 mm), sand (5~7 mm) and several classes. According to the mixture of varying degrees of density, can be divided into dense, semi open grade and grading, such as class, open-graded mixtures, also known as bituminous macadam. One hot mixed hot dense graded crushed stone mixture of durable, high strength, good integrity, is built of asphalt pavement of high representative material most widely used. States on asphalt concrete developed has different of specification, China developed of hot mix hot Pu asphalt mixed material technology specification, to gap rate 10% and the following who called asphalt concrete, and fine is divided into ⅰ type and II type, ⅰ type of pore rate for 3 (or 2) ~6%, is classified distribution type; II type for 6~10%, is half open level distribution type; gap rate 10% above who called asphalt gravel, is open level distribution type; mixed material of physical mechanical index has stable degrees, and flow value and pore rate.