Product Data Sheet Show all documents

SikaGunite® GP

One component Gunite dry spray applied repair mortar

SikaGunite® GP is a cement-based, ready to use, one component mortar. It is applied by mechanical application on vertical and overhead surfaces using the dry spraying process, and can be used in civil or mining applications.
 

  • Easy to use with the addition of potable water.
  • Economical.
  • High resistance to chloride and sulfates.
  • Excellent abrasion resistance.
  • Controlled shrinkage.
Product Data Sheet Show all documents

Usage

  • Concrete repair of bridges, canals, sewer linings, sea walls, culverts and tunnels.
  • Pier and dock supports.
  • Sewage treatment plants.
  • Marine environments.
  • Retaining walls.
  • Protection of steel work.
  • Embankment protection and stabilisation.
 

Advantages

  • Easy to use with the addition of potable water.
  • Economical.
  • High resistance to chloride and sulfates.
  • Excellent abrasion resistance.
  • Controlled shrinkage.

Packaging

20 kg bag and 1000kg bulk bags on request

Colour

Concrete grey (mixed)

Product Details

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

  • AS4020:2018 Approved for Potable Water Applications.
Product Information

Shelf life

9 months from date of production

Storage conditions

Stored properly in original, unopened and undamaged packaging in dry conditions.

Maximum grain size

~ 2mm

 

Density

2,080 kg/m3
Technical Information

Compressive strength

1 day

~ 20 MPa

7 days~ 50 MPa

28 days

~ 70 MPa

Material and curing conditions at 23°C / 50% r.h.
Above results based on 50mm x 50mm cube @ 0.113 w/p ratio

Tensile strength in flexure

1 day

6.0 MPa

7 days

9.0 MPa

28 days

11.0 MPa

Tensile strength

~ 6.0 MPa at 28 days (Indirect Tensile)

(AS 1012.10)

Restrained shrinkage / expansion

≥ 2.0 MPa at 84 days

(EN 12617)

Electrical resistivity

28 days

~ 89,000 Ω.cm

56 days

~ 122,000 Ω.cm

90 days~ 148,000 Ω.cm

Application

Application Information

Layer thickness

10 mm to 175 mm approximately

Initial set time

70 - 80 minutes approx. @ W/P ratio of 0.113

Final set time

90 - 120 minutes approx. @ W/P ratio of 0.113
Consumption

Consumption

Approx. 105 bags per m3

Yield

Approx. 9.52 litre per 20 kg bag
Application steps

APPLICATION

SikaGunite® GP can be applied dry spraying process. In the dry shot process, the nozzleman determines the water content of the mix and therefore the quality of the sprayed mortar. A lower water/powder ratio can result in too much dust and a higher water/powder ratio can give a flowing mortar that will slump off the substrate. For applications to vertical surfaces up to 175 mm maybe achievable with overhead repairs up to 150mm depending on water additon. After spraying immediately screed off and trowel.

CURING TREATMENT

Proper curing procedures are important to ensure the durability and quality of the repair. To prevent surface cracking, cure the repair mortar using plastic sheets, wet hession, or curing compounds such as SikaCure.

CLEANING OF EQUIPMENT

Remove non hardened Gunite from tools and equipment with water. Hardened material can only be removed mechanically.

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