Description
Prestressed pipe sizing
RA-YI
Performance and use:After the tensioning and anchoring of prestressed tendons, the holes should be pressed as soon as possible, and should be completed within 48h. In response to this demand, the RA-YI prestressed pipe sizing material developed by our company has superior performance and is at the national leading technical level. It has the characteristics of good fluidity, no bleeding, no stratification, good durability, no rust of prestressed steel bars, firm bond with concrete, full and early strength of grouting, small expansion and high filling, one-time grouting construction, and dense slurry without gaps in the pipeline. The product is easy to use, and can be used directly by adding water. It meets the requirements of "Technical Specifications for Highway Bridge and culvert Construction" (JTG/ TF50-2011), "Technical Conditions for Railway Post-tensioned Prestressed concrete Beam Pipeline grouting" (TB/T3192-2008) and "Enterprise Standard of China Railway Corporation" (Q/CR409-2017).Main features:1, good fluidity, high strength, no bleeding, no stratification.2, durability is good, there is no aging, no rust on the steel bar, durable and strong.3, the slurry has full early strength, micro expansion and other characteristics.4, the product has high filling, can be one-time grouting construction, the slurry in the pipeline is dense without gaps.5, the prestressed steel bar does not rust, and the concrete bond firmly.6, easy to use, directly add water can be used.Scope of application:It is suitable for grouting operation of cement slurry, cement mortar and cement concrete, especially for post-tensioned prestressed tunnel grouting construction of general roads, expressways, high-speed railways, Bridges, nuclear power plants and other large projects.Product specification: | item | Performance index |
| TB/T3192-2008 |
| Water-binder ratio(%) | ≤0.33 |
| Solidification time(h:m) | Initial time | ≥4 |
| Finally time | ≤24 |
| fluidity(25ºC)(s) | Initial fluidity | 18±4 |
| 30min fluidity | ≤30 |
| 60min fluidity | - |
| Bleeding rate(%) | 24h free bleeding rate | 0 |
| 3h interwire/capillary bleeding rate | ≤0.1 |
| Pressure bleeding rate(%) | 0.22mpa (vertical height of channel ≤1.8m) | ≤3.5 |
| 0.22mpa (vertical height of channel > 1.8m) | ≤3.5 |
| Free expansion rate(%) | 3h | - |
| 24h | 0-3 |
| Compressive strength(mpa) | 3d | - |
| 7d | ≥35 |
| 28d | ≥50 |
| Flexural strength(mpa) | 3d | - |
| 7d | ≥6.5 |
| 28d | ≥10 |
| Corrosion of steel bars | No rust |
| Gas content (%) | 1-3 |
| Fineness (80um square hole sieve allowance) (%) | - |
Save:1. The production of prestressed tendons, the installation of anchors and fixtures, the application of prestressed tendons, and the grouting should meet the design requirements, and comply with the provisions of post-tensioned prestressed channels grouting in JTG/T F50-2011 "Technical Specifications for the Construction of Highway Bridges and Culverts".2, the reference water-binder ratio of mixing prestressed pipeline slurry slurry is 0.26 ~ 0.28. Add mixing water into the mixer, start the mixer, evenly add all the slurry, stir while adding, stir continuously after adding all the powder for 5 ~ 10min.3, the duration of the slurry from stirring to pressing into the hole should not exceed 40min.4, the slurry should be continuously stirred before use and during the pressure injection process, and the flow of the slurry caused by delayed use should not be increased by adding additional water.5, when pressing the slurry temperature should be maintained between 5ºC ~ 30ºC, otherwise measures should be taken to meet the conditions.6, the prestressed pipeline slurry, water weighing accurate, and strictly according to the determined water glue ratio of water, not at will to adjust the amount of water.Packing specification:
1, this product is lined with plastic woven bag packaging, net weight 25±1kg/ bag.
2. Store in a dry and ventilated room.
3. The shelf life is one year.
Q: Are you trading company or manufacturer?
A: We are factory with Certification of ISO9001:2008, ISO14001:2004 and OHSAS18001:2007.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples? is it free or extra?
A: Yes, we could offer the sample for free charge and pay the cost of freight if you sincerely test.
Q: What is your terms of payment?
A:100% in advance
Complaint
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