FLUID CABLE is a powder product that is added to cement to obtain, after mixing with a very small amount of water, injection fluid grouts that are free of bleeding and with no shrinkage. The cement grouts obtained by adding the FLUID CABLE additive provide high sliding values, high mechanical strength, protection from "stress corrosion" and exceptional adhesion to iron, thus making them ideal for filling cable sheaths subjected to post-tensioning and for the structural strengthening of soils, concretes, and uneven or unstable hollow masonry through low pressure injection. The product contains no chlorides or metal expansives.
Injection mortar additives for prestressing cables
Shelf-life: 12 months
Temperature of use: + 5 / + 35 °C
Adherence to steel
≥ 2000 g/l
< 1.5 %
Fluid cone after 30'
≤ 28 s
Fluid cone after mixing 0'
≤ 24 s
Volume variation with cylinder method
0 < V ≤ 0.1 %
- Bag 25 kg
- Pallet: 50 x (Bag 25 kg)
The physical-chemical action of FLUID CABLE allows you to obtain performances not possible with conventional mixtures. From a chemical and physical-mechanical point of view the following advantages are obtained:
• Great fluidity with the lowering of the water/cement ratio.
• Water retention and mixing stabilisation such as to eliminate bleeding, segregation and to allow high cohesion.
• Shrinkage compensation with an induced expansion in the range from 250 to 400 microns/metre; no cracks in the filling volume; perfect filling of structural discontinuities.
• Preservation of reinforcements in aggressive environments and increased adherence to steel.
• Extended workability times.
• Increased mechanical strength compared to those of the initial cement; the mechanical strength values will obviously depend on the reactivity and the type of cement used.
FLUID CABLE meets the requirements contained in the standard EN 934-4 prospectus T2 and has the CE marking relative to additives for mortar for pre-stressing cables.
The values obtained, in accordance with UNI EN 934-4, with CEM I cement type, strength class 42.5, in compliance with EN 197/1 are in "Technical specifications".
Indicative mechanical strengths adding 6% of FLUID CABLE to different Portland Cements:
o PTL 52.5: values => at 25 N/mm2 at 24 h and at > = 65 N/mm2 after 28 days;
o PTL 42.5: values => at 20 N/mm2 at 24 hours and at > = 50 N/mm2 after 28 days.
o PTL 32.5: values => at 15 N/mm2 at 24 hours and at > = 40 N/mm2 at 28 days.
The setting times are longer than the normal setting values of the cement used, but obviously they are conditioned by the type of cement and by the varying climatic and environmental conditions. In general, it can be stated that the setting times are about 20% -25% longer than the setting times of the cements used.
Add from 4 to 6 kg of FLUID CABLE for every 100 kg of hydraulic binder.
Mix from 4 to 6 kg of FLUID CABLE additive with 100 kg of hydraulic binder to obtain a fluid grout that can be used in the following fields of applications.
• Filling of cable sheaths subjected to post-tensioning and of sheaths or cavities for anchor rods.
• Permeation and strengthening of porous or loose conglomerates.
• Sealing or strengthening of gravel or cement conglomerates.
• Sealing of cracks in cement, masonry, and rock conglomerates.
• Large-scale strengthening injections on masonry structures.
Add FLUID CABLE directly into the mixer, about 4-6% in weight with respect to the mixture binder (4-6 kg of product per 100 kg of hydraulic binder). The dosage of mixture water must be drastically reduced compared to classic water-cement grout: the correct use values, for an injectable consistency, are between 30% and 38% in weight with respect to the hydraulic binder, bearing in mind the rule that the finer the cement, the more water is needed.
The loading sequence in the mixer, kept in continuous motion, is as follows (the indicative dosages of each component to obtain about 70 litres of injection grout are in brackets):
• Water (25 litres)
• FLUID CABLE (6 kg)
• Hydraulic binder (100 kg)
• Then gradually add the remaining water.
Add extra water, if strictly necessary, and proceed with mixing until you obtain a homogeneous lump-free fluid grout that is injectable without superficial bleeding.
Use suitable mechanical mixers and mix for at least 5-6 minutes. The mixing time can be reduced to 2-3 minutes if turbomixers or high speed mixers are used.
Temperature of use from +5°C to +35°C. At temperatures close to the lower limit of use, mix with warm water (40°C).
In strengthening operations, it is always advisable to saturate the cavities or conglomerates with water (to be performed a few hours before the grout is injected, avoiding any excess water on the surface) to prevent the substrates absorbing water from the mixture before it hardens.
Avoid using brackish water or water containing chlorides. Do not store the bags in wet or damp environments; PROTECT FROM HUMIDITY. The product has an acid-base reaction: adopt the same precautions for when using cements and limes (wear protective gloves, goggles and clothing to avoid contact with alkaline dust that can cause irritation).
Do not use the contents of open bags if you notice agglomeration of the powder.
- To be added to other components
- Mixed walls (bricks and stones)
- Stone walls
Check the appropriateness of the product depending on the specific requirements by performing adequate preliminary tests.
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