Product Data Sheet Safety Data Sheet Show all documents

SikaTop®-121

Thixotropic, Polymer Modified Patching and Adhesive Mortar

SikaTop®-121 is a two-component cement based, polymer modified, trowelable adhesive and filling compound for the protection and repair of concrete and Metal surfaces.

Sika Top® -121 is an economical and easy to use material offering the following properties:
  • Easy to mix and apply.
  • Good mechanical strength.
  • Excellent adhesion.
  • High resistance to de- icing salts.
  • Non Toxic when fully cured.
  • Resistant to city sewage medium.
  • Also availabe as Sika Top® -121 SR
Product Data Sheet Safety Data Sheet Show all documents

Usage

Sika Top® -121 is a versatile material that can be employed to carry out the following functions:
  • Protective Coating for bridge parapets retaining walls, etc., against deicing salts.
  • Filling Compound to level off irregularities and fill blowholes and fine honeycombs.
  • Adhesive for floor and wall tiles.
  • Rending for reservoirs.
  • Bonding Mortar between new and old concrete.
 

Advantages

Sika Top® -121 is an economical and easy to use material offering the following properties:
  • Easy to mix and apply.
  • Good mechanical strength.
  • Excellent adhesion.
  • High resistance to de- icing salts.
  • Non Toxic when fully cured.
  • Resistant to city sewage medium.
  • Also availabe as Sika Top® -121 SR

Packaging

25 kg set (A+B)

Colour

Grey

Product Details

Product Information

Shelf life

12 months from date of production if stored properly in original unopened packing

Storage conditions

  1. Comp. (A) must be protected from frost and sunlight.
  2. Comp. (B) must be protected from moisture and sunlight, off the ground.

Density

Comp. (A): 1.02 kg/I
Comp. (B): 1.25 kg/I
Comp. (A+B): 2.00 kg/l (mixed)
System information

System structure

Coverage

2 kg/m2 per mm thickness.

Surface preparation

Concrete, stone and masonry surfaces should be clean, free from oil, grease and all loosely adhering particles. Metal surfaces (iron and steel) should be free from scale, rust, oil and grease. Absorbent surfaces should be saturated thoroughly.
Technical Information

Compressive strength

~ 40 N/mm2  after 28 days ;20o CEN 196-1

Tensile strength in flexure

~10–14 N/mm2 after 28 days ;20o C

Tensile adhesion strength

Bond strength to concrete

~ 3 N/mm2 (concrete failure).

Bond strength to ceramic.

~ 3 N/mm2

Application

Application Information

Mixing ratio

Parts by weights comp (A: B) = 1:4 or 1: 5 (depending on required consistency)

Layer thickness

maximum 5 mm Per Layer
Application steps

MIXING

  • Both components are pre measured for use as an adhesive. Place the full contents of Comp. (A) in a suitable mixing container.
  • Add Comp. (B) and mix for 3 minutes until a smooth, even consistency is achieved.
  • When using as a filling compound use only 80 or 90% of Comp. (A) depending on the required consistency.

 

APPLICATION

  • When used as tile adhesive or bonding agent, apply to the desired thickness, with a notched trowel. For tiling, press the tiles firmly into place while the adhesive is still wet.
  • When using as a bonding agent to be rendered later, allow to harden first. When using as a filler apply with a spatula or trowel to desired profile and finish.

CURING TREATMENT

Use approved curing methods, like Antisol® -E curing compound, etc.

CLEANING OF EQUIPMENT

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

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