High performance prestressed pipe pressure slurry vacuum grouting construction technique

High performance prestressed pipe grouting seam an agent vacuum grouting prestressed tensioning prestressed concrete structure after the construction methods of pipeline pressure slurry is good or bad, will directly affect the durability of prestressed concrete structure and security, pipe grouting has become a key process in the process of prestressed concrete structure construction. The slurry in pipe grouting construction quality is not high, grouting is not full has become one of the main diseases of prestressed concrete. The new 'technical specification for construction of highway bridge ( JTG/T F50－2011） Of post-tensioned prestressed pipe grouting construction was revised, improved the post-tensioned prestressed pipe grouting material ( Prestressed pipe pressure slurry) Performance, equipment requirements, technology, technical requirements and quality standards. My company in the bridge engineering construction, in view of the traditional prestressed pipe grouting material ( Prestressed pipe pressure slurry) And slurry grouting process of the pipe is not full, the problem of imperfect, through the laboratory test, carried on the thorough research and application of the construction site practice adopted in the construction of production of H - architectural technology co. , LTD 60 prestressed pipe pressure slurry, supplemented by the vacuum grouting technology, achieved good effect. Through several engineering implementation, we deeply understand and highly endorsed the new grouting material ( Prestressed pipe pressure slurry) The technical characteristic, at the same time improve the vacuum grouting technology, grouting for prestressed structure of full weight, density and durability provides a powerful guarantee, improve the overall quality of the construction of prestressed concrete structure, by summarizing the method. With vacuum pump suction first prestressed duct in the air, to channel of vacuum negative pressure 0. 06 ~ 0. 1 mpa, then at the end of a channel with grouting pump at a certain pressure to press the water slurry mixture into prestressed channel and generate a certain amount of pressure, at the same time, the pore pressure and the positive and negative pressure difference between the slurry pump, greatly improving the pore full of slurry and compactness. 。 。 。 。 。 Make a phone call for details. 。 15838304411.