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SikaGrout-318, Expandable Mortar

SikaGrout-318, Expandable Mortar

Grouts
SIKA

Sika is a global leader in specialty chemicals for the construction and industrial sectors. The company develops and supplies innovative products and systems for bonding, sealing, damping, reinforcing, and protecting structures. With a strong focus on sustainability and performance, Sika serves a wide range of applications including concrete production, waterproofing, roofing, flooring, and structural strengthening.

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General Specifications
Packaging 25 kg
Chemical Base Cement, selected fillers and aggregates, special additives
Usage Grout for 25–80 mm castings: machine/equipment base plates
Usage Area -
Color Gray powder
Working Time ~40 minutes at 20°C
Product Temperature -
Application Thickness -
Ambient Air Temperature +5 °C min. / +30 °C max
Storage Conditions Store in dry conditions, in original, sealed and undamaged packaging
Density Density of fresh mortar ~2.3 kg/l

High performance fluid expandable mortar with low shrinkage

SikaGrout®-318 is a one-component, ready-to-mix, flowable, expandable, low-shrink cement-based mortar.

Use

SikaGrout®-318 is a mortar for castings in layer thicknesses between 25 mm (0.984 in) and 80 mm (3.15 in).

Recommended for subcasting at:

  • Base plates for heavy equipment / foundations for machinery and equipment.
  • Support surfaces for precast concrete elements.
  • Filling cavities and voids.
  • Sealing around punctures and perforations.
  • Fixing prefabricated elements.
  • Recommended for repair and restoration works (principle 3, method 3.2 of SR EN 1504-9). Repair of exfoliation and damaged concrete in civil structures, bridges, infrastructure and superstructure works.
  • Recommended for structural strengthening (Principle 4, Method 4.4 of SR EN 1504-9), increasing the bearing capacity of concrete structures, by applying it to increase the thickness of structural elements.
  • Recommended for preserving or restoring the passivity of reinforcements (Principle 7, Methods 7.1 and 7.2 of SR EN 1504-9), increasing the thickness of the coating over the reinforcements and replacing contaminated or carbonated concrete.
Advantages
  • Rapid development of resistances
  • High ultimate resistances
  • Compensated contractions (both in the plastic state and in the hardening phase)
  • Very good flow properties
  • Due to its composition, it does not allow the development of segregations
  • Easy to use (ready-to-mix powder)
  • Easy to mix, just add water
  • Adjustable consistency
  • Can be pumped or gravity poured
  • It is not corrosive
  • Fire classification A1
pack

25 kg (55.1 lb) bags

Color

Grey powder

Typical technical data
APPROVALS / CERTIFICATIONS

- CE marking and Declaration of Performance in accordance with SR EN 1504-6 – Anchoring of steel reinforcement bars.
- CE marking and Declaration of Performance in accordance with SR EN 1504-3 – Product for structural repairs for concrete elements for use in civil and industrial constructions.

Chemical base

Cement, selected fillers and aggregates, special additives

Validity period

12 months from date of manufacture

Storage conditions

Store in dry conditions, in original, sealed and undamaged packaging.

Density

Density of fresh mortar ~2.3 kg/l (~19.2 lb/gal)

Maximum grain

D max: 8 mm (0.315 in)

Content of soluble chlorine ions

≤ 0.05% (EN 1015-17)

Compressive strength

Class R4
1 day 7 days 28 days
~30 MPa (~4351 psi) ~45 MPa (~6527 psi) ~80 MPa (~11603 psi)

Modulus of elasticity to compression

~30 GPa (EN 13412)

Effective bearing surface

> 85%

Bending strength

1 day 28 days
~6 MPa (~870 psi) ~9 MPa (~1305 psi)

Adhesion by pull test

≥ 2.0 MPa (290 psi) (EN 1542)

Impeded contraction/expansion

≥ 2.0 MPa (290 psi) (EN 12617-4)

Thermal compatibility

≥ 2.0 MPa (290 psi) (Part 1: Freezing - Thawing) (EN 13687-1)

Coefficient of thermal expansion

~12 x 10 -6 1/K (EN 1770)

Reaction to fire

Euroclass A1 (EN 1504-6)

Capillary absorption

≤ 0.5 kg/(m 2 h 0.5 ) (EN 13057)

Resistance to carbonation

d k ≤ concrete control (MC(0.45)) (EN 13295)

Application
Mixture ratio

2.8 - 3.1 liters of water per 1 bag of 25 kg (55.1 lb)

11.2% - 12.4% liters of water per unit weight of powder

Layer thickness

minimum 25 mm (0.984 in) / maximum 80 mm (3.15 in)

Ambient air temperature

+5°C (+41 °F) minimum / +30°C (+86 °F) maximum

Support temperature

+5°C (+41 °F) minimum / +30°C (+86 °F) maximum

Lifetime of the mixture

~40 minutes at 20°C (68 °F)

Consumption

It depends on the nature of the support layer and the thickness of the applied layer. Usually, the consumption is ~19 kg (~41.9 lb) of powder per 10 mm (0.394 in) thickness per m 2

Yield

For 1 bag of SikaGrout®-318 approximately 12.2 liters of mortar is obtained

shuffle

SikaGrout®-318 is mixed with an electric mixer at low speed (< 500 rpm) to avoid air entrainment. For best results always mix whole bags. Add water in the correct proportion to a mixing bowl. While mixing, gradually add the powder. Blend for at least 3 minutes to achieve desired consistency.

APPLICATION

Excess water will be removed from the substrate, for example with a clean sponge, until the surface has a wet-matt appearance without shine (dry saturated surface appearance). The pores and any small cavities of the substrate will not contain water. Wait 5 minutes after mixing for air entrained by mixing to be removed. Pour the mortar into the already prepared space, making sure there is enough pressure for the product to flow continuously. Make sure the air in the mortar can escape easily. To make the most of the mortar's capacity to increase its volume, put the mortar into work as quickly as possible (within 15 minutes max.).

STRENGTHENING TREATMENT

Keep the mortar surface exposed as little as possible. Protect the fresh material against premature drying using known methods such as: wet geotextile membrane, polyethylene film, jute fabric, anti-evaporation products, etc.

CLEANING OF TOOLS

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