New Technology In The Hohhot To Baotou The Freeway Expansion Project In Theapplication

At present domestic modification technology is mainly divided into asphalt modification of asphalt concrete pavement and asphalt mixture modified technology. Based on entity engineering concrete analysis, summarized the modified asphalt concrete pavement and asphalt mixture by modification of pavement construction technology, analyzes the advantages and disadvantages of these two technologies. Among them, the two technologies, the asphalt modification technology has the complex production process, high production costs and great energy consumption, serious pollution, modified asphalt storage time is limited and the quality is not stable shortcomings; And asphalt mixture modified technique has simple process, simple to use, to reduce the cost, performance, environmental protection, energy conservation, renewable resources, shorten the construction period, prolong the service life of road surface characteristics, advantages of flexible pavement road performance and service quality of ascension has great economic and social benefits.On this basis, this paper application of Hohhot to baotou highway reconstruction project practice, to realize asphalt mixture through the modification of the high temperature stability, low temperature crack resistance and other properties have varying degrees of increase. In addition, the paper introduces the asphalt pavement construction technology and matters needing attention of construction.This article through to the past of medium and small span beam bridge precast hollow board of investigation and practice, that the core basic is to use an inflatable rubber mold core mold, steel or wood pattern. The traditional core module can be used repeatedly, but have some disadvantages, especially the traditional rubber core mould cannot be used. When using polyvinyl benzene board core modules do not need to take out the core mold, when construction simplification working procedure, reduces the construction difficulty, in construction process to ensure airtight, no deformation, no leakage, put an end to air in memory, the greatest degree to prevent oxidation of steel and steel strand. At the same time, the size of the hollow slab section are secured, compared with the traditional core mold, effectively improve the engineering quality.This article also introduces the high pressure resistance, light, moisture, polyethylene benzene plate is not bibulous, airtight, deformation, corrosion resistance and other properties and the corresponding construction technology.