The main purpose for post-tensioned beams prestressed pipe grouting filling material, prestressing steel to prevent corrosion and ensure effective stress transfer between the beam and the prestressed concrete structure, the inner bore full dense slurry, slurry to maintain a certain PH value range, completely wrapped prestressing steel, after hardening slurry has high strength and elastic modulus and the expansion and contraction without adhesion. Apply after grouting anchor Zhang Liang prestressed pipe grouting filling, anchor systems, continuous wall head stanch grouting curtain grouting; foundation grouting equipment, plate and beam-column joints sit pulp, engineering repair and anchor bolts, without Self-compacting vibrators, micro-expansion, anti-oil seepage, resist corrosion, frost impermeability; for high-strength steel in prestressed concrete members pore filling, road bridge reinforcement, to run after 24h, and a strong bond with the hardened concrete repair no obvious traces of paste that moderate controlled setting time. Two technical points 1, type: high-strength non-systolic syrup (material), super early strong pressure slurry; 2, mixed usage: grouting agents within the amount of cement mixed with 10%, and formulated into pressure slurry; 3, the pressure slurry water: cement ratio for prestressed concrete beam pipe grouting is not greater than 0.33. 4, construction equipment (1) should be greater than the rotational speed stirrer 1000Y / min, maximum line speed limit paddle within 15m / s, the shape of the blades should be appropriate for the speed. (2) grouting machine with continuous pressure pump, pressure gauge minimum scale value should be less than 0.1Mpa, the maximum range of the actual operating pressure should be within the 25-75 percent range. (3) storage tank with a stirring function. (4) If the use of vacuum-assisted grouting process should reach a negative pressure pump 0.092Mpa of. (5) Measurement: cement grouting agent (material), water weighing should be accurate to ± 1.0%. Stir technology requirements 5, mixing technology requirements (1) Construction Equipment Cleaning: Clean inside the device should have a residue after clean, stagnant water, mixer filter space should be less than 3mm × 3mm. (2) slurry blending operation in order: in a blender before adding 80-90% of the actual amount of mixing water, start mixer, even adding all the pressure slurry, stirring plus side, all of the powder is added and then stirred for 2min, the last to join 10-20% margin of mixing water and continue stirring 2min to use. (3) Flow Test: once every 10 degree spot test for detection of flow, after its fluidity to meet the requirements, you can filter through into the storage tank, should continue to stir the slurry storage tank in order to ensure the slurry flowability. (4) generally should not be in the construction process to increase the fluidity of extra water. 6, grouting technology requirements (1) before grouting, remove debris and water channels within the beam. (2) should be opened before grouting pressure pump, squeezing the slurry discharged from the mouth a little, in order to exclude air from the lines grouting, water, slurry, when the discharge slurry fluidity and consistent mixing tank before the start push beam channels. Maximum pressure (3) grouting should not exceed 0.6Mpa, grouting filling should reach full bore and the other end to exhaust vent with the provisions of the fluidity of the same date paste. After the pulp mouth shut, keep no less than 0.5Mpa and not less than 3min regulated period. (4) For the continuous beam or pressure fill slurry, so that the tap water - slurry suspension flows out freely from the outlet end; slurry pump again until the outlet end has a homogeneous slurry flows under a pressure of 0.5Mpa holding 5min, This process should be repeated 1-2 times. After grouting anchor plate should be pressed in / out situation dense slurry grouting hole inspection and, if not dense, should be supplementary irrigation to ensure the channel is completely dense. (5) If a vacuum assisted grouting process before grouting should first evacuated to a vacuum degree of stability within the channel between -0.06Mpa ~ -0.08Mpa, stable vacuum degree, immediately turn the pipe end grouting valve open simultaneously continuous pressure grouting pump. (6) Grouting order: before you get on the same pipeline grouting should be continuous, once completed, the slurry is stirred to push the beam time should be small 40min. (7) Sampling grouting: grouting process, each hole should produce three groups of standard beam curing test body (40mm × 40mm × 160mm), compressive strength and flexural strength tests, for grouting record (including: press pulp material, mixing ratio, grouting date, mixing time, the machine fluidity, slurry temperature, ambient temperature, pressure and dwell time, vacuum, grouting site person in charge of supervising engineers, etc.). 7, pipe grouting time and technical requirements (1) complete the final tensioning, grouting pipes should be within 48h. Libraries can pay in advance (2) grouting, but the need to ensure the strength of 28d standard specimen reaches a predetermined value. 8, the beam, and the ambient temperature when the slurry grouting slurry temperature should be between 5 ℃ ~ 30 ℃, grouting and after grouting within 3d, beam and ambient temperature should be greater than 5 ℃, otherwise it should be taken care measures . When construction is higher than 35 ℃, the construction should be selected at night or in the morning and evening, less than 5 ℃, should be required to deal with the construction technique of winter, moderate increase gas content indicators. 3 grouting agent (material) storage and packaging 1. Packaging: grouting agent (material) is sealed with plastic bags packaging. 2, Weight: Each piece grouting agent (material) Net of 25 (50) kg ± 0.2kg. 3, the production date and batch number, to indicate the factory certification. 4. Shelf life: standard products manufactured at room temperature storage conditions, the shelf life of 90 days pressure slurry, grouting agent shelf life of 180 days. 5. Storage: stored in a cool, dry storage warehouse security, waterproof, anti-breakage, anti-high temperature (45 ℃ above). 6, transport conditions: anti-rain, sunlight, keep the packaging intact.