Product Data Sheet Show all documents

SikaGrout® Cable PT

HIGH PERFORMANCE, SAND FREE, CEMENTITIOUS GROUT FOR POST-TENSIONED STRUCTURES

SikaGrout® Cable PT is a non-shrink, cementitious cable grout with a unique 2-stage shrinkage compensating mechanism. It is non-metallic & contains no chlorides. With a special blend of shrinkage-reducing and plasticizing / water reducing agents. SikaGrout® Cable PT compensates for shrinkage in both the plastic & hardened states.
Suitable for use in hot and tropical climatic conditions.

  • Suitable for filling of voids within ducts of post tensioned structures
  • Does not contain aluminium powder or any components which generate hydrogen gas, carbon dioxide or oxygen
  • Easy to use
  • Non-metallic will not stain or rust
  • Low heat build-up
  • Excellent for pumping: Does not segregate even at high flow / pressure
  • Positive expansion when tested in accordance with BS EN 445
Product Data Sheet Show all documents

Usage

  • Use for horizontal & vertical grouting of ducts within bonded, post-tensioned structures.
  • Use to grout, fill or repair voids with ducts of post-tensioning strands for corrosion protection.
  • Use for grouting tight clearances.
 

Advantages

  • Suitable for filling of voids within ducts of post tensioned structures
  • Does not contain aluminium powder or any components which generate hydrogen gas, carbon dioxide or oxygen
  • Easy to use
  • Non-metallic will not stain or rust
  • Low heat build-up
  • Excellent for pumping: Does not segregate even at high flow / pressure
  • Positive expansion when tested in accordance with BS EN 445

Packaging

25 kg bag

40 kg bag

Colour

Grey powder

Product Details

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

SikaGrout® Cable PT follows the requirements of EN 447 and ASTM C939/-940/-1090/-109
Product Information

Composition

Portland cement, special additives.

Shelf life

9 months minimum from date of production

Storage conditions

Store in undamaged, unopened, original sealed packaging in dry conditions between +5 °C and +35 °C. Protect from direct sunlight, heat and moisture.

 
Technical Information

Compressive strength

~ 65 N/mm2 (28 d) (w/p = 0.32)

(EN 196-1)

(ASTM C109)

Expansion

w/p = 0.3

1 Day

3 Days

~0.03 %

~0.05 %

~0.20 % (1 d) (w/p = 0.32)

(EN 445)

Bleeding

Nil (w/p = 0.32)

(EN 445)

(ASTM C940)

Application

Application Information

Mixing ratio

8.0 - 8.5 L of water per 25 kg bag

12.8 - 13.6 L of water per 40 kg bag

Water to powder ratio min. 0.32, max. 0.34 range (w/p=0.32-0.34)

Fresh mortar density

~2.00 kg/l

(ASTM C-138)

Flowability

Immediately after mixing ≤ 25 s(EN 445 / ASTM C-939 modified)
30 minutes after mixing ≤ 25 s(EN 445 / ASTM C-939 modified)

w/p = 0.32 (+23 °C)
Consumption

Yield

25 kg of SikaGrout® Cable PT will yield approximately 16.5 litres when mixed with 8.0 litres of water.

40 kg of SikaGrout® Cable PT will yield approximately 26.4 litres when mixed with 12.8 litres of water.
Application steps

MIXING

For cable duct grouting use a colloidal mixer / high shear mixer at approximately 2500 rpm. Mix for approximately 3 minutes, after the addition of the last bag or until a homogenous mix is achieved. Continue to agitate material in the holding hopper to achieve optimum flow. Method of mixing may significantly affect the material properties, particularly flow. At higher temperatures and / or with higher water volumes, the grout will behave less thixotropic. Therefore, it may be more appropriate to measure the flow using the standard flow cone test (ASTM C-939). The expected flux time is between 11 - 30 seconds under normal conditions. At higher temperature use chilled water & store the bags in a cool place to keep the mixed grout temperature below 25 °C wherever possible. For other grouting applications, double mixer with spindle basket paddles, can be also used for mixing; the mixing time should be extended to 7 minutes to get the required flow.

APPLICATION

Make sure all forming, mixing, placing, and clean-up materials are on hand. The method of pumping the grout must ensure complete filling of the ducts and complete surrounding of the strands or bar. A mock-up should be completed on-site and inspected by the engineer to ensure that the placement meets specified requirements.

For additional corrosion protection, add 100 grams of Sika® Ferrogard®-901 per bag of grout by replacing same amount of mixing water if needed.

When grouting ducts or other critical elements, it is highly recommended that experienced, trained technicians complete the work.

CLEANING OF EQUIPMENT

Clean all tools and application equipment with water immediately after use.
Hardened / cured material can only be mechanically removed.

 

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