Asphalt mixing plant  is the "raw material heart" of asphalt pavement engineering. The mixing accuracy, temperature stability and mixing uniformity of mixture directly determine the flatness, compactness, water damage resistance and cracking resistance of pavement, which is the first core point of pavement quality control. The operation of the asphalt plant  has the characteristics of rigorous processes, sensitive parameters, high safety risks, and details determine success or failure. Standardized start-up, batching, temperature control, mixing, discharging, shutdown and daily operation and maintenance operations can effectively avoid white materials, segregated materials, Common quality problems such as uneven temperature and oil-stone ratio deviation. This paper systematically explains the complete operation steps and core practical operation skills of asphalt mixing station according to the requirements of site standardization construction. 

Asphalt pavement has become the mainstream pavement form of urban municipal roads, expressways and rural trunk roads by virtue of its advantages of high flatness, comfortable driving, low noise, convenient maintenance and fast opening speed.Asphalt road construction is a systematic and refined project, covering many core links such as preliminary preparation, subgrade treatment, base construction, asphalt pavement paving, rolling molding and later maintenance. The construction quality of each step directly determines the service life and traffic safety of the road.This paper will disassemble the whole process steps of standardized asphalt road construction in detail.

Asphalt distributor is the core special equipment for asphalt pavement construction and maintenance. It integrates liquid asphalt storage, constant temperature insulation, accurate metering and uniform distribution. It can adapt to hot asphalt, emulsified asphalt, modified asphalt and other materials. With the characteristics of intelligent quantity control, speed linkage, uniform spraying and flexible mobility, it completely replaces the extensive construction mode of traditional manual spraying and simple equipment spraying, and is widely used in new construction, daily maintenance, waterproof and anti-seepage and emergency repair projects of all grades of highways, municipal roads and special sites. As the key equipment of asphalt pavement interlayer bonding, waterproof sealing layer and disease treatment, its application scenarios run through the whole life cycle of road construction. Combined with the engineering practice, this paper comprehensively analyzes various core application scenarios and construction values of asphalt distribution vehicles. 

In the field of highway construction, municipal maintenance, waterproof engineering and other infrastructure construction, barrel solid asphalt has become one of the core raw materials for engineering construction due to its advantages of convenient transportation, stable storage and adaptability to scattered construction scenarios. The traditional method of manual open fire baking and simple cauldron boiling has many problems, such as large asphalt residue, high energy consumption, serious smoke pollution, low construction efficiency, inaccurate temperature control, etc., which can not meet the requirements of green construction and standardized operation of modern engineering. As a professional asphalt pretreatment equipment, bitumen decanter equipment realizes rapid melting, complete debarking, constant temperature storage and continuous feeding of barreled asphalt by relying on the advantages of automation, sealing and precision. It has been widely used in various asphalt construction scenarios and has become a key equipment to ensure project quality, improve construction efficiency and practice green construction standards. Combined with the engineering practice, this paper systematically expounds the working principle, core application scenario, practical advantages and application optimization strategy of bitumen decanter equipment. 

Summer is the golden window period for asphalt pavement construction, with sufficient daytime construction time and gentle mixture cooling rate, which is conducive to continuous paving of hot joints and effectively improving the integrity of pavement. However, with the continuous high temperature, strong light exposure, sudden rise of surface temperature and other conditions, asphalt mixture is easy to appear overheating softening, viscosity reduction, compaction window period shortened, oil separation, rutting and other quality problems, while high temperature operation also has greater safety hazards. If the normal temperature construction process is followed, it will easily cause early damage to the road surface, substandard flatness, and significant decline in durability. Combined with the characteristics of high temperature construction in summer, this paper combs standardized high temperature construction control skills from the whole process of construction difficulties, time planning, material mixing, transportation temperature control, paving and rolling, disease prevention and control, safety protection, etc., and provides practical reference for high quality and efficient construction of asphalt pavement in summer. 

Asphalt pavement cold repair material is an emergency repair material without heating and normal temperature construction. It is widely used in repairing road pits, cracks, looseness, subsidence and other diseases by virtue of its advantages of convenient construction, no seasonal temperature restriction and rapid opening of traffic after repair. Compared with traditional hot-mix asphalt, the construction threshold of cold repair material is lower, but in order to realize smooth and dense pavement after repair, durable, non-falling and non-seepage, and avoid short-term secondary damage problem, it is necessary to master standardized and refined practical operation skills. Combined with the field construction experience, this paper comprehensively explains the core skills of cold repair material application from the aspects of preliminary pretreatment, filler paving, compaction forming, special construction conditions, maintenance acceptance and pit avoidance. 

Asphalt pavement exposed to the natural environment for a long time, continuously subjected to multiple effects such as vehicle load rolling, rain erosion, alternating high and low temperatures, ultraviolet aging, etc., will gradually appear subtle cracks, surface water seepage, loose aggregate, anti-skid attenuation and other hidden diseases.Without timely intervention, minor diseases will gradually evolve into serious diseases such as pits, subsidence and large-area cracks, greatly increasing overhaul costs and shortening road service life.Preventive maintenance of asphalt pavement is an active protection method before the pavement structure is in good condition and the disease has not deteriorated. The core principle is "early detection, early treatment, quick treatment of minor diseases and no treatment of serious diseases".This paper systematically combs the preventive maintenance and protection measures commonly used in asphalt pavement projects, covering five categories: surface layer sealing, thin layer repair, crack disposal, disease pretreatment and daily management and protection, which are fully adapted to the maintenance scenarios of various grades of highways and municipal roads.

In the field of modern highway, municipal road maintenance and new construction, slurry sealing vehicle is an indispensable core special equipment.It relies on automatic control system, accurately proportioning aggregate, emulsified asphalt, mineral powder, water and special additives, continuously stirring and uniformly paving to form ultra-thin dense asphalt slurry seal layer. With the advantages of high efficiency, minimally invasive and low cost construction, it becomes the key equipment for road preventive maintenance, disease repair and pavement optimization, and is widely suitable for the construction of various grades of highways, municipal roads and special traffic pavement projects.

In highway construction, reconstruction, micro-surface maintenance, synchronous gravel sealing and other road projects, gravel spreading is the core foundation process, which directly determines the interlayer bond strength, waterproof crack resistance and overall service life of pavement. The traditional operation mode of manual spreading and simple equipment scattering generally has pain points such as uneven thickness, aggregate waste, low efficiency and many hidden dangers, which is difficult to meet the requirements of standardized, refined and efficient construction of modern roads. 

Bitumen emulsion plant equipment is the core special equipment for road maintenance and new pavement engineering. Its performance directly determines the quality of emulsified bitumen products, construction efficiency, engineering cost and pavement service life.Many procurement and construction personnel only pay attention to equipment price and production capacity when selecting models, ignoring core parameters and detailed indicators, which is easy to cause problems such as poor emulsion stability, inaccurate ratio, high energy consumption and frequent failures, which indirectly cause delay in construction period, waste of materials and soaring maintenance costs in the later period.