Product Data Sheet Show all documents

SikaGrout®-300 PT AU

High Performance, Zero Bleed, Sand Free, Cementitious Grout for Post-Tensioning Applications

SikaGrout®-300 PT AU is a non-shrink (Class A and C), cementitious grout with a unique 2 phase shrinkage compensating mechanism. It is non-metallic and contains no chlorides. With a special blend of shrinkage reducing and plasticizing/water- reducing agents, SikaGrout®-300 PT AU compensates for shrinkage in both the plastic and hardened states.

  • Sand free allows filling and repairing of voids withinducts of post-tensioned structures
  • Does not contain aluminium powder or any components which generate hydrogen gas, carbon dioxide or oxygen Silica fume enhanced for low permeability
  • For additional protection, substitute 74 ml of mixing water with 74 ml of Sika® Ferrogard® -901 for each 20 kg bag of SikaGrout® -300 PT AU
  • Easy to use, just add water
  • Non metallic, will not stain or rust
  • Zero bleeding, even at high flow
  • Low heat build-up
  • Excellent for pumping. Does not segregate even at high flow and no build-up on equipment or hoppers
  • Non-corrosive, does not contain chlorides
  • Superior freeze/ thaw resistance
Product Data Sheet Show all documents

Usage

SikaGrout®-300 PT AU suitably experienced and trained specialist contractors.
SikaGrout®-300 PT AU is used:
  • For horizontal and vertical grouting of ducts within bonded, post-tensioned structures
  • To grout and fill or repair voids within ducts of posttensioning strands for corrosion protection
  • For grouting with tight clearance requirements
 

Advantages

  • Sand free allows filling and repairing of voids withinducts of post-tensioned structures
  • Does not contain aluminium powder or any components which generate hydrogen gas, carbon dioxide or oxygen Silica fume enhanced for low permeability
  • For additional protection, substitute 74 ml of mixing water with 74 ml of Sika® Ferrogard® -901 for each 20 kg bag of SikaGrout® -300 PT AU
  • Easy to use, just add water
  • Non metallic, will not stain or rust
  • Zero bleeding, even at high flow
  • Low heat build-up
  • Excellent for pumping. Does not segregate even at high flow and no build-up on equipment or hoppers
  • Non-corrosive, does not contain chlorides
  • Superior freeze/ thaw resistance

Packaging

20 kg bags

Product Details

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

  • RMS B113- Post Tensioning of Concrete
  • RMS R56 Ground Anchors
  • RMS R64 Soil Nailing
  • Dept Transport Qld (TMR )- Product Index for bridges and other Structures Section 5. Registered and Conforming Products Part 5.30 Post Tensioning Grout
Product Information

Composition

Portland cement

Shelf life

9 months from date of production

Storage conditions

Store properly in dry conditions in undamaged and unopened original sealed packaging

Density

~ 2.0 kg/litre

Maximum grain size

None (sand free)

Soluble chloride ion content

< 0.08% by weight of cementitious material

(ASTM C 1152)
Technical Information

Compressive strength

Day

W/P: 0.33 @ 23oC

1

~ 15 MPa

7

~ 55 MPa
28~ 65 MPa

Shrinkage

Day

W/P: 0.33 @ 23oC

1

0 - 0.1%

28

0 - 0.2%

Expansion

< 2% after 3 hours

(ASTM C 940)

Bleeding

<0.5%

(ASTM C 940)

Electrical resistivity

7 days

~ 4,000 Ω.cm

28 days

~ 10,000 Ω.cm

56 days

~ 13,000 Ω.cm
90 days~ 14,000 Ω.cm

Application

Application Information

Mixing ratio

6.6 litres of water per 20kg bag for RMS B113, R56 & R64 compliant grout

Flowability

W/P ratio

Initial Flow (sec)

Flow Retention @ 45 mins (sec)

0.33

< 20

< 3 change

Ambient air temperature

+5 °C min / +35 °C max

Substrate temperature

+5 °C min / +35 °C max

Pot Life

~ 60 minutes
Consumption

Yield

1 bag yields approx. 12.4 - 13.6litre of grout depending on water addition
Application steps

MIXING

For best resutls use a colloidal mixer. Alternatively, mechanically mix with a high speed drill (2500 rpm) and Sika® jiffy paddle. Mix for approximately 3 minutes after the addition of the last bag or until a homogeneus mix is achieved. Continue to agitate material in the holding hopper to achieve optimum flow.

The method of mixing may significantly affect the material properties, particularly flow. At higher temperatures
and/or with higher water amounts, the grout will behave less thixotropically. Therefore, it may be more appropiate to measure the flow using the standard flow cone test (ASTM C -939). The expected flux time is between 11 - 20 seconds under normal conditions. Specific on site testing by the engineer is recommended to ensure that the mixing and placement methods result in the specified requirements.

Add appropiate quantity of clean water. Add bag of material to mixing vessel. Start by using 5.4 litres of water per 20 kg bag of material. Add additional water as needed - a total maximum of 6.6 litres per 20 kg bag in order to achieve the flow specified. Ambient and material temperature should be as close as possible to +23 °C. If higher, use cold water, if colder, use warm water.

APPLICATION

Make sure all forming, mixing, placing, and clean-up materials are on hand. The grout should be used within 60 minutes from the start of mixing. 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 onsite and inspected by the engineer to ensure that the placement means and methods yield the specified results.
When grouting ducts or other critical elements, it is higly recommended that experienced, trained technicians complete the work.

CLEANING OF EQUIPMENT

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

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